640-911 - introducing cisco data center networking … - introducing cisco data center networking...

640-911 - Introducing Cisco Data Center Networking (DCICN)

Number: 640-911Passing Score: 800Time Limit: 120 minFile Version: 1.0

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Cisco 640-911

Introducing Cisco Data Center Networking

Version: 8.0Cisco 640-911 Exam

Exam A

QUESTION 1Which two networking devices operate at Layer 1 of the OSI model? (Choose two.)

A. RepeaterB. BridgeC. SwitchD. RouterE. Hub

Correct Answer: AESection: (none)Explanation

Explanation/Reference:Explanation:It defines the electrical and physical specifications of the data connection. It defines the relationship between a device and a physical transmission medium (e.g. acopper or fiber optical cable). This includes the layout of pins, voltages, line impedance, cable specifications, signal timing, hubs, repeaters, network adapters, hostbus adapters (HBA used in storage area networks) and more."http://en.wikipedia.org/wiki/OSI_model

QUESTION 2Which two networking devices forward data based on destination MAC address? (Choose two.)

A. RepeaterB. BridgeC. SwitchD. RouterE. Hub

Correct Answer: BCSection: (none)Explanation

Explanation/Reference:Explanation:http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/white_paper_c11- 465436.html

QUESTION 3Which two network topologies are the most popular in switching? (Choose two.)


A. BusB. Token passing busC. StarD. Extended starE. Ring

Correct Answer: CDSection: (none)Explanation

Explanation/Reference:Explanation:http://en.wikipedia.org/wiki/Network_topology

QUESTION 4Which device would you select to partition a network into VLANs?

A. repeaterB. bridgeC. switchD. routerE. hub

Correct Answer: CSection: (none)Explanation

Explanation/Reference:

Explanation:

QUESTION 5At which layer of the OSI model does TCP operate?

A. 1B. 2C. 3D. 4E. 5

Correct Answer: DSection: (none)Explanation

Explanation/Reference:Explanation:http://en.wikipedia.org/wiki/OSI_model

QUESTION 6Which two layers of the OSI model relate to the transmission of bits over the wire and packet forwarding based on destination IP address? (Choose two.)

A. 1B. 2C. 3D. 4E. 5

Correct Answer: ACSection: (none)Explanation

Explanation/Reference:Explanation:Bits - 1 layerPackets - 3 layerhttp://en.wikipedia.org/wiki/OSI_model

QUESTION 7

Which layer of the OSI model is associated with the reliable transmission of datagrams?

A. DatagramB. RoutingC. NetworkD. Data linkE. TransportF. TransmissionG. Session

Correct Answer: ESection: (none)Explanation

Explanation/Reference:Explanation:http://en.wikipedia.org/wiki/Transport_layer

QUESTION 8Which three terms are used to describe data at Layers 1, 2, and 4 of the OSI model? (Choose three.)

A. PDUsB. BitsC. SequencesD. SegmentsE. PacketsF. Frames

Correct Answer: BDFSection: (none)Explanation

Explanation/Reference:Explanation:Bits -1 layerFrames - 2 layerSegments - 4 layerhttp://en.wikipedia.org/wiki/OSI_model

QUESTION 9What are two features of a bridge? (Choose two.)

A. Reliable transmissionB. Operate at OSI Layer 2C. Operate at OSI Layer 3D. Create multiple broadcast domainsE. Create multiple collision domainsF. Flood input packets to all portsG. Drop IP packets with invalid destination ports

Correct Answer: BESection: (none)Explanation

Explanation/Reference:Explanation:"- a bridge is a two interfaces device that creates 2 collision domains, since it forwards the traffic it receives from one interface only to the interface where thedestination layer 2 device (based on his mac address) is connected to. A bridge is considered as an "intelligent hub" since it reads the destination mac address inorder to forward the traffic only to the interface where it is connected" https://learningnetwork.cisco.com/thread/1734

QUESTION 10What are three reasons that switches supersede bridges? (Choose three.)

A. Smaller frame buffers decrease latency.B. Forward, filter, or flood frames.C. Multiple simultaneous communications between ports.D. Larger inspection engine allows for higher throughput.E. Switches have many ports.

Correct Answer: BCESection: (none)Explanation

Explanation/Reference:Explanation:http://docwiki.cisco.com/wiki/Bridging_and_Switching_Basics

QUESTION 11What action does a switch take if the destination MAC address is unknown?

A. Discard frameB. Send ICMP unreachable message to sourceC. Flood packet on all portsD. Compare destination IP address against an ACL to determine if it is permittedE. Send gratuitous ARP on all ports and wait for reply before forwarding


Explanation/Reference:Explanation:"What happens though when the switch receives a frame with a destination MAC address that is not included in the table? In that case the switch will just broadcast/flood the frame with the unknown destination address to all of its ports (apart from the port where the frame came from).This process is called unknown unicast flooding. "http://telconotes.wordpress.com/2013/03/09/how-a-switch-works/

QUESTION 12Which statement describes the purpose of the MAC address forwarding table of a switch?

A. The switch consults the forwarding table to determine the best route to a destination.B. The switch consults the forwarding table to determine the output port.C. The switch consults the forwarding table to determine if the packet is routable.D. The switch consults the forwarding table to determine if access control permits the packet.

Correct Answer: BSection: (none)Explanation

Explanation/Reference:Explanation:

QUESTION 13What are two attributes of a VLAN? (Choose two.)

A. A VLAN defines a collision domain.

B. A VLAN defines a broadcast domain.C. Broadcasts are flooded to all VLANs.D. Collisions are flooded to all VLANs.E. A Layer 3 device is required to route packets between VLANs.F. A Layer 2 device is required to route packets between VLANs.


Explanation/Reference:Explanation:"In computer networking, a single layer-2 network may be partitioned to create multiple distinctbroadcast domains, which are mutually isolated so that packets can only pass between them via one or more routers; such a domain is referred to as a virtual localarea network, virtual LAN or VLAN.""A router (Layer 3 device) serves as the backbone for network traffic going across different VLANs."http://en.wikipedia.org/wiki/Virtual_LAN

QUESTION 14Which four statements indicate unique properties of VLAN 1 on Cisco Nexus switches? (Choose four.)

A. VLAN 1 is used to flood multicast traffic.B. VLAN 1 cannot be deleted.C. VLAN 1 is used for Cisco Discovery Protocol.D. VLAN 1 is used for VTP advertisements.E. VLAN 1 defines a collision domain.F. VLAN 1 defines a broadcast domain.

Correct Answer: BCDFSection: (none)Explanation

Explanation/Reference:Explanation:http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx- os/layer2/configuration/guide/Cisco_Nexus_7000_Series_NX-S_Layer_2_Switching_Configuration_Guide_Release_5.x_chapter4.html

QUESTION 15Which command displays the Trunking Native Mode VLAN on port Ethernet 1/18?

A. show running-config switchport e1/18B. show running-config e1/18 switchportC. show interface e1/18D. show interface e1/18 switchportE. show interface e1/18 native


Explanation/Reference:Explanation:NX# show interface e1/18 switchportAccess Mode VLAN: 1 (default)Trunking Native Mode VLAN: 1 (default)Trunking VLANs Allowed: 1-4094Voice VLAN: none

QUESTION 16Which VTP mode disallows the creation of local VLANs?

A. transparentB. tunnelingC. serverD. clientE. offF. native


Explanation/Reference:Explanation:"A VTP client behaves like a VTP server and transmits and receives VTP updates on its trunks, but you cannot create, change, or delete VLANs on a VTP client.VLANs are configured on another switch in the domain that is in server mode." http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_52_se/configur ation/guide/swvtp.html#wp1205076

QUESTION 17Which three statements are true concerning RFC 1918 IP addresses? (Choose three.)

A. They are globally routable.B. They are not globally routable.C. They must not be filtered at Internet border interfaces.D. They should be filtered at Internet border interfaces.E. They include 10.0.0.0/8, 172.16.0.0/16, and 192.168.1.0/24.F. They include 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16.

Correct Answer: BDFSection: (none)Explanation

Explanation/Reference:Explanation:"The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private internets:10.0.0.0 - 10.255.255.255 (10/8 prefix)172.16.0.0 - 172.31.255.255 (172.16/12 prefix)192.168.0.0 - 192.168.255.255 (192.168/16 prefix)"http://tools.ietf.org/html/rfc1918

QUESTION 18Which two statements describe the purpose of RFC 1918? (Choose two.)

A. Establish a range of IP addresses that are dedicated to the growing use of multicast video.B. Establish a range of IP addresses that are dedicated to the growing use of peer-to-peer file- sharing applications.C. Establish a range of IP addresses that are dedicated to use on internal networks.D. Establish a range of IP addresses to address the shrinking pool of globally routable addresses.E. Delay the transition to IPv6.


Explanation/Reference:Explanation:http://tools.ietf.org/html/rfc1918

QUESTION 19What are three reasons to migrate from IPv4 to IPv6? (Choose three.)

A. IPv6 eliminates the requirement for NAT.B. IPv6 includes enough IP addresses to allocate more than four billion IP addresses to every person on earth.C. IPv6 eliminates the need for VLANs.D. Hosts can be assigned an IP address without DHCP.E. Hosts can be assigned an IP address without DNS.

Correct Answer: ABDSection: (none)Explanation

Explanation/Reference:Explanation:"IPv6 address contains 32 characters vs. 12 in IPv4. This will grant no ip address translation anddynamic changes. We will even don't need NAT! "http://www.ipv6.ru/english/history/goipv6.php" IPv6 uses a 128-bit address, allowing 2128, or approximately 3.4×1038 addresses, or more than 7.9×1028 times as many as IPv4, which uses 32-bit addresses"http://en.wikipedia.org/wiki/IPv6

QUESTION 20Which two options describe services that are provided by TCP? (Choose two.)

A. session multiplexingB. EtherTypes identify destination servicesC. connection-orientedD. best-effort packet deliveryE. binary translation


Explanation/Reference:Explanation:"TCP is a connection-oriented protocol."http://www.diffen.com/difference/TCP_vs_UDP

QUESTION 21Which two options describe services that are provided by UDP? (Choose two.)

A. session multiplexingB. segmentationC. connection-orientedD. reliable packet deliveryE. best-effort packet delivery

Correct Answer: AESection: (none)Explanation

Explanation/Reference:Explanation:"UDP is faster because there is no error-checking for packets." http://www.diffen.com/difference/TCP_vs_UDP

QUESTION 22Which two options represent a subnet mask that allows for a maximum of 14 available host addresses on a subnet? (Choose two.)

A. 255.255.255.240B. 255.255.255.192C. 255.255.240.0D. 255.255.192.0E. /14F. /21G. /26H. /28

Correct Answer: AHSection: (none)Explanation

Explanation/Reference:Explanation:Example:Address: 192.168.1.1Bitmask: 28

Netmask: 255.255.255.240Network: 192.168.1.0HostMin: 192.168.1.1HostMax: 192.168.1.14Broadcast: 192.168.1.15Hosts: 16

QUESTION 23What is the binary value of the hexadecimal number 0x511?

A. 10100011001B. 10101010101C. 10110010001D. 10100010001E. 10100110011


Explanation/Reference:Explanation:Decimal 1297Binary 10100010001Hexadecimal 0x511Roman MCCXCVIIDotted decimal 0.0.5.17

QUESTION 24What is the binary value of the decimal number 1263?

A. 11011101101B. 10011101111C. 10011101011D. 11010001111E. 10111101111

Correct Answer: BSection: (none)

Explanation

Explanation/Reference:Explanation:Decimal 1263Binary 10011101111Hexadecimal 0x4efRoman MCCLXIIIDotted decimal 0.0.4.239

QUESTION 25Which option is an example of a distance vector routing protocol?

A. RIPB. OSPFC. ARPD. IS-IS

Correct Answer: ASection: (none)Explanation

Explanation/Reference:Explanation:http://en.wikipedia.org/wiki/Distance-vector_routing_protocol "Examples of distance-vector routing protocols include RIPv1 and RIPv2 and IGRP." OSPF, IS-IS- link-state routing protocols. ARP - address resolution protocol.

QUESTION 26Which option is an example of an advanced distance vector routing protocol?

A. EIGRPB. RIPC. OSPFD. ARP



Explanation:http://en.wikipedia.org/wiki/Enhanced_Interior_Gateway_Routing_Protocol "The Enhanced Interior Gateway Routing Protocol (EIGRP) is an advancedcommunications protocol that helps automate routing decisions on a computer network."

QUESTION 27Which option is an example of a link-state routing protocol?

A. EIGRPB. RIPC. OSPFD. ARP


Explanation/Reference:Explanation:http://en.wikipedia.org/wiki/Link-state_routing_protocol "A link-state routing protocol is one of the two main classes of routing protocols used in packet switchingnetworks for computer communications (the other is the distance-vector routing protocol). Examples of link state routing protocols include open shortest path first(OSPF) and intermediate system to intermediate system (IS-IS)."

QUESTION 28What is the maximum allowable hop count for RIPv1?

A. 4B. 8C. 12D. 15E. 16


Explanation/Reference:Explanation:"Without using RMTI, the hop count cannot exceed 15, otherwise it will be considered invalid." http://en.wikipedia.org/wiki/Routing_Information_Protocol

QUESTION 29Which statement correctly describes an SVI?

A. An SVI is a Layer 2 interface and uses a dynamic MAC address.B. An SVI cannot have an IP address assigned to it.C. An SVI provides Layer 3 routing between VLANs.D. Each switch port requires an SVI assignment.


Explanation/Reference:Explanation:http://en.wikipedia.org/wiki/Switch_virtual_interface

QUESTION 30What is the Cisco Nexus Operating System command to define a port as a Layer 3 port?

A. Port routedB. No switchportC. l3 switchportD. Port switching off


Explanation/Reference:Explanation:"If you want to configure a Layer 3 interface for Layer 2, enter the switchport command. Then, if you change a Layer 2 interface to a routed interface, enter the noswitchport command. " http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/command/reference/layer2/ n5kl2_cmds_n.pdf

QUESTION 31Which statement is correct regarding a routed port on a multilayer switch?

A. A routed port requires an SVI definition.B. Routed ports cannot be configured on a multilayer switch that uses SVIs.C. A maximum of 32 routed ports can be provisioned on a given multilayer switch.

D. A routed port is a physical port that supports Layer 3 routing.



QUESTION 32On a new Cisco Nexus switch, you receive an error message when you attempt to create an SVI. What is the first command you must use to create the SVI?

A. Interface vlan (vlan_id)B. Vlan (vlan_id)C. Feature sviD. Interface routed


Explanation/Reference:Explanation:http://docwiki.cisco.com/wiki/Cisco_NX-OS/IOS_Interface_Comparison ==Configuring a Switched Virtual Interface (SVI)==feature interface-vlaninterface vlan 10ip address 192.168.1.1./24no shutdown

QUESTION 33Which command should you use to configure a Cisco Nexus switch port for Layer 2 operation?

A. nexus(config-if)#switchportB. nexus(config-if)#layer-2C. nexus(config-if)#routedD. nexus(config)#interface vlan 10

nexus(config-if)#switchport

Correct Answer: A

Section: (none)Explanation

Explanation/Reference:Explanation:"If you want to configure a Layer 3 interface for Layer 2, enter the switchport command. Then, if you change a Layer 2 interface to a routed interface, enter the noswitchport command." http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/command/reference/layer2/ n5kl2_cmds_n.pdf

QUESTION 34Which version of Cisco Nexus Operating System became a common operating system for Cisco Nexus switches and Cisco MDS storage switches?

A. 2.7B. 3.3C. 3.9D. 4.1E. 5.01GDF. 6.2


Explanation/Reference:Explanation:"While many of the changes leading to convergence are product releases and features, others are more symbolic. One of these symbolic changes is therebranding, of Cisco® MDS 9000 SAN-OSSoftware as Cisco MDS 9000 NX-OS® Software effective with Release 4.1." http://www.cisco.com/en/US/prod/collateral/ps4159/ps6409/ps5989/ps9898/Rebranding_MDS_90 00.html

QUESTION 35What are two core features of Cisco Nexus Operating System? (Choose two.)

A. SNMPv3B. RMONC. System ManagerD. PSSE. VRFF. TRILL


Explanation/Reference:Explanation:https://learningnetwork.cisco.com/thread/55535

QUESTION 36What is the acronym expansion of the UDLD feature of Cisco Nexus Operating System?

A. UniDirectional Link DetectionB. Unified Data Link DistributionC. Unified Data Loss DetectionD. Unified Directional Link DistributionE. Unidirectional Data Loss Detection


Explanation/Reference:Explanation:"Unidirectional Link Detection (UDLD) is a data link layer protocol from Cisco Systems to monitor the physical configuration of the cables and detect unidirectionallinks." http://en.wikipedia.org/wiki/Unidirectional_Link_Detection

QUESTION 37What are four security features that are included in Cisco Nexus Operating System? (Choose four.)

A. Cisco TrustSecB. IEEE 802.1QauC. CoPPD. port securityE. PIMF. SSL VPNG. IPsec VPNH. ACLs

Correct Answer: ACDHSection: (none)Explanation

Explanation/Reference:Explanation:https://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/ps9512/brochure_cisco_nex us_7000_series_security_features.pdf

QUESTION 38What are three modular Layer 2 processes in Cisco Nexus Operating System? (Choose three.)

A. UDLDB. PIMC. HSRPD. STPE. Cisco Discovery ProtocolF. OSPF

Correct Answer: ADESection: (none)Explanation

Explanation/Reference:Explanation:"PIM is IP routing protocol-independent and can leverage whichever unicast routing protocols are used to populate the unicast routing table, including EnhancedInterior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), and static routes. PIM uses this unicast routinginformation to perform the multicast forwarding function. Although PIM is called a multicast routing protocol, it actually uses the unicast routing table to perform theRPF check function instead of building up a completely independent multicast routing table. Unlike other routing protocols, PIM does not send and receive routingupdates between routers." http://www.cisco.com/en/US/docs/ios/solutions_docs/ip_multicast/White_papers/mcst_ovr.html#w p1009068"Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing a faulttolerantdefault gateway.·In the configuration procedures, the specified interface must be a Layer 3 interface:" http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_55_se/configur ation/guide/swhsrp.htmlOSPF (Open Shortest Path First) - routing protocol.

QUESTION 39What are three modular Layer 3 processes in Cisco Nexus Operating System? (Choose three.)

A. UDLD

B. PIMC. HSRPD. STPE. OSPFF. Cisco Discovery Protocol


Explanation/Reference:Explanation:"PIM is IP routing protocol-independent and can leverage whichever unicast routing protocols are used topopulate the unicast routing table, including Enhanced Interior Gateway Routing Protocol (EIGRP), OpenShortest Path First (OSPF), Border Gateway Protocol (BGP), and static routes. PIM uses this unicast routing information to perform the multicast forwardingfunction. Although PIM is called a multicast routing protocol, it actually uses the unicast routing table to perform the RPF check function instead of building up acompletely independent multicast routing table. Unlike other routing protocols, PIM does not send and receive routing updates between routers." http://www.cisco.com/en/US/docs/ios/solutions_docs/ip_multicast/White_papers/mcst_ovr.html#w p1009068"Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing a fault tolerant default gateway.In the configuration procedures, the specified interface must be a Layer 3 interface:" http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_55_se/configur ation/guide/swhsrp.htmlOSPF (Open Shortest Path First) - routing protocol.

QUESTION 40What are two default user roles in Cisco Nexus Operating System? (Choose two.)

A. AdminB. Network OperatorC. OperatorD. Storage OperatorE. RootF. System Manager

Correct Answer: ABSection: (none)Explanation


"The Nexus 5000 Series switch provides the following default user roles:·network-admin (superuser)--Complete read and write access to the entire Nexus 5000 Series switch.·network-operator--Complete read access to the Nexus 5000 Series switch." http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli_rel_4 _0_1a/sec_rbac.html#wp1230629

QUESTION 41On most keyboards, the Up arrow and Down arrow keys move through the command history. Which two key sequences can be used as alternatives? (Choose two.)

A. Alt-AB. Alt-FC. Alt-ND. Alt-EE. Alt-P

Correct Answer: CESection: (none)Explanation

Explanation/Reference:Explanation:"Alt-P History search backwardsAlt-N History search forwards"http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli_rel_4_0_1a/begin.html

QUESTION 42What is the function of the Tab key on the Cisco Nexus Operating System command-line interface?

A. redisplays the current command lineB. deletes all characters from the cursor to the end of the command lineC. clears the terminal screenD. completes a partially entered command if enough characters are presentE. moves the cursor one word to the right



"Completes the word for you after entering the first characters of the word, and then pressing the Tab key. All options that match are presented."http://www.cisco.com/en/US/docs/switches/datacenter/sw/4_1/nx- os/fundamentals/configuration/guide/Cisco_Nexus_7000_Series_NX-OS_Fundamentals_Configuration_Guide__Release_4.1_chapter4.html

QUESTION 43Where does Cisco Nexus Operating System store the running configuration file?

A. RAMB. flashC. bootflashD. volatileE. NVRAM


Explanation/Reference:Explanation:"The "running-config" file is stored in RAM."http://www.omnisecu.com/cisco-certified-network-associate-ccna/cisco-router-configuration- files.php

QUESTION 44Where does Cisco Nexus Operating System store the startup configuration file?

A. RAMB. flashC. bootflashD. volatileE. NVRAM


Explanation/Reference:Explanation:"A persistent copy of Cisco Router configuration file is called as "startup-config" file. The "startup- config" file is kept in NVRAM and the contents of the "startup-config" file are retained after a reboot."

http://www.omnisecu.com/cisco-certified-network-associate-ccna/cisco-router-configuration- files.php

QUESTION 45Which two commands would you use to erase the Cisco Nexus Operation System configuration and return the switch to factory defaults? (Choose two.)

A. nexus# write erase bootB. nexus# erase configurationC. nexus# erase running-configurationD. nexus# erase startup-configurationE. nexus# rebootF. nexus# reloadG. nexus# shutdown

Correct Answer: AFSection: (none)Explanation


QUESTION 46What is the minimum required command to enter global configuration mode on a Cisco Nexus switch?

A. nexus# conB. nexus# configureC. nexus# configure globalD. nexus# configure terminal


Explanation/Reference:Explanation:Example:NX# conEnter configuration commands, one per line. End with CNTL/Z.NX(config)#PS. in IOS minimum "conf t"

QUESTION 47Which option would you use to exit the Cisco Nexus Operating System interface configuration mode and return to the exec prompt?

A. nexus(config-if)#Ctrl-Cnexus#

B. nexus(config-if)#Ctrl-Znexus#

C. nexus(config-if)#Ctrl-Enexus#

D. nexus(config-if)#exitnexus#


Explanation/Reference:Explanation:"Ctrl-Z Ends a configuration session, and returns you to EXEC mode. When used at the end of a command line in which a valid command has been typed, theresulting configuration is first added to the running configuration file." http://www.cisco.com/en/US/docs/switches/datacenter/sw/4_1/nx- os/fundamentals/configuration/guide/Cisco_Nexus_7000_Series_NX- OS_Fundamentals_Configuration_Guide__Release_4.1_chapter4.html PS. "exit" return to global config only

QUESTION 48What is the correct format of an access control list on a Cisco Nexus switch to deny unencrypted Web traffic from any source to destination host 10.10.1.110?

A. N5K-A(config)#ip access-list 101N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq 80

B. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq 80C. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq 80 N5K-A(config)#access-list 101permit ip any anyD. N5K-A(config)# ip access-list 101

N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq 80 N5K-A(config-acl)# permit ip any any




QUESTION 49What is the correct format of an access control list on a Cisco Nexus switch to deny FTP traffic from any source to destination host 10.10.1.110?

A. N5K-A(config)# ip access-list 101N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq ftp

B. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq ftpC. N5K-A(config)#access-list 101deny tcp any host 10.10.1.110 eq ftp N5K-A(config)#access-list 101denyip any anyD. N5K-A(config)# ip access-list 101

N5K-A(config-acl)# denyudp any host 10.10.1.110 eq 21 N5K-A(config-acl)# permit ip any anyE. N5K-A(config)# ip access-list 101

N5K-A(config-acl)# deny tcp any host 10.10.1.110 eq 21 N5K-A(config-acl)# permit ip any any



QUESTION 50What is the correct format of an access control list on a Cisco Nexus switch to deny hosts on the 172.16.1.0/21 network from accessing HTTP proxy serverslistening on port 8080?

A. N5K-A(config)# ip access-list 101N5K-A(config-acl)# deny tcp 172.16.1.0 0.0.7.255 any eq 8080 N5K-A(config-acl)# permit ip any any

B. N5K-A(config)# ip access-list 101N5K-A(config-acl)# deny tcp any 172.16.1.0 255.255.248.0 eq 8080 N5K-A(config-acl)# permit ip any any

C. N5K-A(config)#access-list 101 deny tcp172.16.1.0 0.0.15.255 eq 8080D. N5K-A(config)# ip access-list 101

N5K-A(config-acl)# deny tcp any host 172.16.1.0/21 eq 8080



QUESTION 51What is the correct format of an access control list on a Cisco Nexus switch to only permit unencrypted Web traffic from the 172.16.1.0/25 network to destinationhost 10.10.1.110?

A. N5K-A(config)# ip access-list 101N5K-A(config-acl)# permit tcp host 172.16.1.0/25 any eq 80

B. N5K-A(config)# ip access-list 101N5K-A(config-acl)# permit tcp 172.16.1.0 255.255.255.128 any eq 80

C. N5K-A(config)# ip access-list 101N5K-A(config-acl)# permit tcp 172.16.1.0/25 any eq 80

D. N5K-A(config)#access-list 101 permit tcp 172.16.1.0/25 0.0.0.128 eq 80E. N5K-A(config)# ip access-list 101

N5K-A(config-acl)# permit tcp any 172.16.1.0 255.255.248.0 eq 80



QUESTION 52Which device forwards data based on the destination IP address?

A. repeaterB. bridgeC. switchD. routerE. hub

Correct Answer: D



QUESTION 53Which network topology is most closely associated with classical CSMA/CD?

A. busB. token passing busC. starD. extended starE. ring


Explanation/Reference:Explanation:"For the bus topology, the "classical" access methods are the CSMA/CD.." http://books.google.com/books?id=tmJzufisExQC&pg=PA39&lpg=PA39&dq=classic+CSMA/CD+b us+topology&source=bl&ots=b1L_uaAcVR&sig=Tx8zfIavph8RFr9N5n5EDv2WZZo&hl=ru&sa=X&ei=jnDmUsTTD4no4gSd_oGwCw&ved=0CCwQ6AEwAQ#v=onepage&q=classic%20CSMA%2FC D%20bus%20topology&f=false

QUESTION 54Which network topology is most closely associated with FDDI?

A. busB. token passing busC. starD. extended starE. ring



Explanation:http://en.wikipedia.org/wiki/Fiber_Distributed_Data_Interface

QUESTION 55Which layer of the OSI model is associated with Token Ring Media Access Control?

A. datagramB. routingC. networkD. data linkE. transportF. transmissionG. session


Explanation/Reference:Explanation:"Token ring local area network (LAN) technology was a protocol which resided at the data link layer (DLL) of the OSI model."http://en.wikipedia.org/wiki/Token_ring

QUESTION 56When deploying 10BASE-2 Ethernet, which type of connector is used?

A. AUIB. UTPC. STPD. BNCE. RJ-11F. RJ-45G. STH. DC


Explanation/Reference:Explanation:"10BASE2 (also known as cheapernet, thin Ethernet, thinnet, and thinwire) is a variant of Ethernet that uses thin coaxial cable (RG-58A/U or similar, as opposed tothe thicker RG-8 cable used in 10BASE5 networks), terminated with BNC connectors"http://en.wikipedia.org/wiki/10BASE2

QUESTION 57When deploying 10BASE-2 Ethernet, what is the maximum cable length?

A. 100 metersB. 100 feetC. 150 metersD. 150 feetE. 185 metersF. 185 feet


Explanation/Reference:Explanation:"10BASE2 coax cables have a maximum length of 185 meters (607 ft). " http://en.wikipedia.org/wiki/10BASE2

QUESTION 58How many IP address ranges are specified in RFC 1918?

A. 1 in Class A, 2 in Class B, and 4 in Class CB. 2 in Class A, 4 in Class B, and 8 in Class CC. 4 in Class A, 8 in Class B, and 16 in Class CD. 1 in Class A, 16 in Class B, and 256 in Class C



http://tools.ietf.org/html/rfc1918

QUESTION 59What is required to allow devices that are using RFC 1918 addresses to communicate over the Internet?

A. A private to public VLAN must be defined on the Internet border device.B. The Internet firewall must permit RFC 1918 addresses.C. VLAN translation is required on the Internet border device.D. Network address translation is required on the Internet border device.


Explanation/Reference:Explanation:"The majority of NATs map multiple private hosts to one publicly exposed IP address. In a typical configuration, a local network uses one of the designated "private"IP address subnets (RFC 1918)"http://en.wikipedia.org/wiki/Network_address_translation

QUESTION 60What is the addressing format of IPv6?

A. 48-bit dotted decimalB. 48-bit colon-delimited hexadecimalC. 64-bit dotted decimalD. 64-bit colon-delimited hexadecimalE. 128-bit dotted decimalF. 128-bit colon-delimited hexadecimal

Correct Answer: FSection: (none)Explanation

Explanation/Reference:Explanation:"IPv6 addresses are represented as eight groups of four hexadecimal digits separated by colons.The length of an IPv6 address is 128 bits"http://en.wikipedia.org/wiki/IPv6

QUESTION 61Which statement describes the function of the OSI transport layer?

A. It segments data from the system of the sending host and reassembles the data into a data stream on the system of the receiving host.B. It provides the connectivity and path selection between two host systems that may be located on geographically separated networks.C. It defines how data is formatted for transmission and how access to the physical media is controlled.D. It establishes, manages, and terminates sessions between two communicating hosts.


Explanation/Reference:Explanation:http://en.wikipedia.org/wiki/Transport_layer

QUESTION 62Which transport protocol requires a three-way handshake to establish a new connection?

A. ARPB. UDPC. IPD. TCP


Explanation/Reference:Explanation:"To establish a connection, TCP uses a three-way handshake." http://en.wikipedia.org/wiki/Transmission_Control_Protocol

QUESTION 63What is the subnet mask for the network 172.16.0.0/21?

A. 255.255.0.0B. 255.255.255.240C. 255.255.248.0

D. 255.255.255.248E. 255.255.248.240F. 255.255.255.0



QUESTION 64What is the dotted hexadecimal representation of the IP address 172.13.99.225?

A. AC.0D.63.E1B. AB.63.99.D5C. E2.1D.E1.66D. BC.0C.C3.1FE. CC.0D.F3.21



QUESTION 65What is the decimal value of the hexadecimal number 0x718?

A. 718B. 1816C. 2907D. 3511


Explanation/Reference:Explanation:Decimal 1816Binary 11100011000Hexadecimal 0x718Roman MDCCCXVIDotted decimal 0.0.7.24

QUESTION 66HOTSPOT

A.B.C.D.



Explanation:The VTP passwords are set incorrectly.

Use the show VTP password command, one side is set to cisco the other is cisco123.

QUESTION 67HOTSPOT

A.B.C.D.



Explanation: 5Use the show vlan command to see the number of VLANs configured in the 1006-4094 range.

QUESTION 68HOTSPOT

A.B.C.D.



Explanation:N7010-C1 will reply to ARPs that are received on Vlan11

QUESTION 69HOTSPOT

A.B.C.D.



Explanation:

N7010-C1 cannot ping 192.168.10.91 because it lacks a Layer 2 address to which to map.

QUESTION 70HOTSPOT

A.B.C.D.



Explanation:

"Pass Any Exam. Any Time." - www.actualtests.com 55Cisco 640-911 Exam

QUESTION 71HOTSPOT

A.B.C.D.



Explanation:ip route 0.0.00/0 10.99.99.99.2

QUESTION 72Which device is a multiport bridge?

A. RouterB. SwitchC. GatewayD. Concentrator



QUESTION 73Which action will a router take if it does not know the destination MAC address of a host?

A. Flood the packet out of every port.B. Drop the packet.C. Send an ARP request.D. Send a proxy ARP request.E. Send an ICMP unreachable message back to the source.



QUESTION 74On which device would a VLAN be configured?

A. RouterB. Repeater

C. HubD. SwitchE. Gateway



QUESTION 75You are designing a network that provides FCoE, FabricPath, OTV, and Layer 3 functionalities. Which device can perform these functionalities?

A. Cisco Nexus 5500 Series SwitchesB. Cisco Nexus 7000 Series SwitchesC. Cisco Catalyst 6500 Series SwitchesD. Cisco ASR 1001 Router



QUESTION 76A customer wants to connect to their SAN via Fibre Channel. Which two devices can be used to provide connectivity? (Choose two.)

A. Cisco MDS 9148 Multilayer Fabric SwitchB. Cisco Nexus 7010 SwitchC. Cisco Nexus 5548UP SwitchD. Cisco Catalyst 6509 SwitchE. Cisco Nexus 2248TP GE Fabric Extender



QUESTION 77Which network device is used to identify and protect against unauthorized traffic and control access to legitimate business-critical data?

A. Stateful firewallB. Stateless firewallC. RouterD. GatewayE. Switch



QUESTION 78Which two Cisco data center switches provide support for Virtual Extensible LAN and In-Service Software Upgrade and patching without any interruption inoperation? (Choose two.)

A. Cisco Nexus 9396PX SwitchB. Cisco Nexus 5548 SwitchC. Cisco Nexus 9508 SwitchD. Cisco Nexus 6004 SwitchE. Cisco Nexus 3064x Switch



QUESTION 79Which layer of the OSI model ensures that information sent from one system can be read by another system?

A. application layerB. presentation layerC. session layerD. transport layerE. network layerF. data link layerG. physical layer



QUESTION 80Which two options are groups of network protocols that are categorized into the following OSI layers: application, data link, network, and transport? (Choose two.)

A. FTP, LLDP, GRE, BGPB. RDP, CDP, EIGRP, UDPC. SSH, LLDP, ICMP, TCPD. Telnet, ICMP, EIGRP, FTP



QUESTION 81Which Cisco data center switch can support a 4-RU physical space requirement and also support FEX, Layer 2 and Layer 3, converged FCoE, and up to ninety-six40-Gigabit Ethernet ports?

A. Cisco Nexus 5548 SwitchB. Cisco Nexus 5010 SwitchC. Cisco Nexus 1010 Switch

D. Cisco Nexus 7004 SwitchE. Cisco Nexus 6004 Switch



QUESTION 82Which device can provide FCoE connectivity?

A. Cisco 2901 Integrated Services RouterB. Cisco Nexus 2224TP Fabric ExtenderC. Cisco Nexus 5548 SwitchD. Cisco ASA 5510 Firewall



QUESTION 83What are three characteristics of the Ethernet access method CSMA/CD? (Choose three.)

A. It allows many stations access to the same wire.B. It provides segmentation of a LAN.C. It allows a transmitting station to detect activity on the wire.D. It allows for detection of collisions on the wire.E. It provides broadcast capability on the wire.

Correct Answer: ACDSection: (none)Explanation


Explanation:

QUESTION 84Which two MAC addresses are valid? (Choose two.)

A. 00:10:74:C9:CD:C0B. 0010.CC71.4BF9.AE0E.AE0EC. 00:10:F9:F9:CC:70:8D:80D. 0010.E686.3ED4E. 0010.68F7

Correct Answer: ADSection: (none)Explanation


QUESTION 85What are three important factors when configuring VTP on the Cisco Nexus switching platform? (Choose three.)

A. VLAN 1 must be disabled on the trunk port in order for VTP to work properly.B. The VDC administrator or network administrator must enable VTP on the device.C. VTP is enabled on all trunk ports by default.D. It does not matter which VDC you are working in when you configure VTP on the Cisco Nexus 7000.E. For a device operating in VTP client mode, the password and domain name must be properly set.F. In VTP server mode, the device will store VLAN information in bootflash.G. Per device, VTP configuration is stored in a file named vtp.conf.H. VTP pruning can be used on Cisco NX-OS devices.

Correct Answer: BFGSection: (none)Explanation


QUESTION 86

Which two statements about configuring VLANs on the Cisco Nexus 7000 platform are true? (Choose two.)

A. Software updates are disruptive to VLANs.B. VLANs with the same number are unique to their VDC.C. VLAN licensing is required for use.D. To change VLAN information, the administrator must be at the switch (config) # prompt.E. The command copy running-config startup-config will save changes to the VLAN database.



QUESTION 87In Cisco NX-OS, which three options are possible spanning tree port types? (Choose three.)

A. bridgeB. networkC. normalD. rootE. edgeF. fixed



QUESTION 88Which two data center technologies are part of the IEEE 802.3 standard for Ethernet-based LANs? (Choose two.)

A. 40 Gb/sB. 10 Gb/sC. WLAN

D. Smart Grid



QUESTION 89What will cause a device to wait a random amount of time before trying to transmit again?

A. signal drop or fadeB. signal acknowledgmentC. packet dropD. signal collisionE. keep alive signalF. Ethernet silence tone



QUESTION 90Which option includes the two devices that can be connected when a Cisco Fabric Extender Transceiver is used?

A. Server to Cisco Nexus 2000 Series Fabric ExtenderB. Server to Cisco Nexus 5010 SwitchC. Server to Cisco Nexus 5548 SwitchD. Cisco Nexus 2000 Series Fabric Extender to Cisco Nexus 5500 Switch



Explanation:

QUESTION 91What is the maximum distance that is supported by Cisco passive Twinax cables?

A. 3 mB. 4 mC. 5 mD. 10 m



QUESTION 92What is the maximum distance that is supported by Cisco active Twinax cables?

A. 8 mB. 10 mC. 12 mD. 15 m



QUESTION 93If a Nexus switch receives a frame and does not have an entry in its MAC table for the source, which action will take place?

A. The frame will be dropped.B. The frame will be flooded.C. The sender will be notified.D. The source address will be learned.



QUESTION 94Which three IP addresses are examples of an RFC 1918 address? (Choose three.)

A. 172.16.3.1/24B. 209.165.201.5/27C. 209.165.200.225/27D. 10.30.20.1/28E. 192.168.200.50/24

Correct Answer: ADESection: (none)Explanation


QUESTION 95An administrator wants a host with IP address 192.168.40.3 to communicate to hosts on the Internet. How can this be achieved?

A. This type of communication cannot be achieved.B. Network Address Translation must be used.C. The perimeter firewall must permit RFC 1918 addresses to the Internet.D. A dedicated VLAN should be provisioned to allow private-to-public translation.



QUESTION 96In an IPv6 address, how many bits are used for the interface identifier?

A. 48B. 16C. 64D. 128E. 10



QUESTION 97How many IP addresses are usable for a subnet that has the address 10.6.128.0/21?

A. 1024B. 2048C. 1022D. 2046E. 256



QUESTION 98What is the maximum distance that is supported between two devices that are connected via Cisco Fabric Extender Transceivers?

A. 50 mB. 75 mC. 100 m

D. 150 m



QUESTION 99What is the minimum number of fabric modules that should be installed in the Cisco Nexus 7000 chassis for N 1 redundancy using M1-Series line card?

A. 3B. 4C. 5D. 6



QUESTION 100What is the maximum number of fabric modules that can be installed in a Cisco Nexus 7000 chassis?

A. 4B. 5C. 6D. 7



QUESTION 101How many supervisor engines must a Cisco Nexus chassis contain to support the In-Service Software Update feature?

A. 2B. 3C. 4D. 1



QUESTION 102Ethernet 1/1 is assigned IP address 10.1.1.1 with subnet mask 255.255.255.0. Which configuration is used to configure EIGRP on a Cisco Nexus 7000 switch?


A. feature eigrp!interface Ethernet1/1ip address 10.1.1.1 255.255.255.0no shutdown!router eigrp 1network 10.1.1.0 0.0.0.255

B. feature eigrp!router eigrp 1autonomous-system 1!interface Ethernet1/1

ip address 10.1.1.1/24ip router eigrp 1no shutdown

C. router eigrp 1autonomous-system 1!interface Ethernet1/1ip address 10.1.1.1/24ip router eigrp 1no shutdown

D. feature eigrp!interface Ethernet1/1ip address 10.1.1.1/24no shutdown!router eigrp 1network 10.1.1.0 0.0.0.255



QUESTION 103VLAN 10 is assigned IP address 10.1.1.1 with subnet mask 255.255.255.0. Which configuration is used to route the IP subnet but not form OSPF neighbors on aCisco Nexus 7000 switch?

A.

B.

C.

D.



QUESTION 104

What is the command sequence to force a Cisco Nexus 6000 switch to boot using the golden BIOS image?

A. Press Ctrl-Shift-6 within 30 seconds of when power is supplied to the switch.B. Press Ctrl-] within 2 seconds of when power is supplied to the switch.C. Press Ctrl-] within 30 seconds of when power is supplied to the switch.D. Press Ctrl-Shift-6 within 2 seconds of when power is supplied to the switch.



QUESTION 105The kickstart image is corrupted on a Cisco Nexus 7000 switch. Which procedure is used to download a new kickstart image?

A. Boot the system and press Ctrl-] while the memory test is in progress to interrupt the boot loader.B. Boot the system and press the Esc key while the memory test is in progress to interrupt the boot loader.C. Boot the system and press the Esc key after the BIOS memory test to interrupt the boot loader.D. Boot the system and press Ctrl-] after the BIOS memory test to interrupt the boot loader.



QUESTION 106Which situation results in a flashing blue status LED on a Cisco Nexus 7000 switch I/O module?

A. The switch has just been powered on, and the module is resetting.B. The module is resetting and both ejector levers are out.C. The module has been inserted during the initialization process.D. The module could not power up because of insufficient power.E. The operator has activated this LED to identify this module in the chassis.



QUESTION 107If a Nexus switch receives a frame and no MAC table entry is found for the destination, what will take place?

A. The frame will be dropped.B. The frame will be flooded.C. The sender will be notified.D. The destination address will be learned.



QUESTION 108Which three addresses are valid forms of an IPv6 Address: 2001:0DB8:0000:FE01:0000:0000:0000:0000? (Choose three.)

A. 2001:0DB8:0000:FE01::B. 2001:DB8:0:FE01::C. 2001:0DB8::FE01::D. 2001:DB8:0:FE01:0:0:0:0

Correct Answer: ABDSection: (none)Explanation


QUESTION 109How many bits are in an IPv4 address?

A. 32B. 24C. 8D. 4



QUESTION 110Which two addresses represent multicast addresses? (Choose two.)

A. 224.1.47.5B. 240.100.22.3C. FF05::1D. 2001::1



QUESTION 111At which layer in the OSI stack does the Hypertext Transfer Protocol operate?

A. Layer 1B. Layer 2C. Layer 3D. Layer 4E. Layer 5F. Layer 6G. Layer 7

Correct Answer: GSection: (none)Explanation


QUESTION 112What is the order of the OSI stack starting at Layer 1 and ending at Layer 7?

A. Application, Presentation, Session, Transport, Network, Data Link, PhysicalB. Application, Presentation, Transport, Data Link, Session, Physical, NetworkC. Physical, Network, Transport, Data Link, Session, Application, PresentationD. Physical, Data Link, Network, Transport, Session, Presentation, ApplicationE. Presentation, Application, Data Link, Session, Network, Transport, Physical



QUESTION 113What is the default bridge ID priority for Rapid PVST+?

A. 128B. 32769C. 32768D. 4096



QUESTION 114On a Cisco router, which configuration register setting bypasses the contents of the NVRAM?

A. 0x102B. 0x2102C. 0x2120D. 0x2124E. 0x2142



QUESTION 115What is a main function of a Layer 2 switch in a network?

A. It breaks a large broadcast domain into smaller ones.B. It merges small collision domains in a large one.C. It breaks a large collision domain into smaller ones.D. It creates Virtual LANs for traffic segregation and security.E. It manages traffic using dynamic routing protocols.



QUESTION 116What two statements about functions within the OSI layer model are true? (Choose two.)

A. data at Layer 3 is referred to as a FrameB. routing function happen at Layer 3C. network layer is responsible for assigning a MAC address to NIC

D. ARP is a Layer 2 protocolE. encryption of data happens at the Transport Layer

Correct Answer: BDSection: (none)Explanation


QUESTION 117What network device is considered an invisible wire?

A. routerB. hubC. switchD. bridge



QUESTION 118What network topology consists of each node connecting to a central device?

A. busB. meshC. starD. spine and leaf



QUESTION 119An engineer replaces multiple hubs in the network with Layer 2 switches. What are two effects on the performance of the network? (Choose two.)

A. reduced number of frame collisionsB. multiple devices can transmit and receive frames simultaneouslyC. reduced broadcast packet propagationD. reduced complexity in monitoring traffic within the Layer 2 domainE. reduced number of packet collisions



QUESTION 120

Refer to the exhibit. If switch SW2 was replaced with a router, which two effects would it have on the network? (Choose two.)

A. reduce the number of collision domainsB. increase the number of broadcast domainsC. increase the number of collision domainsD. reduce the number of broadcast domainsE. no change in collision domains



QUESTION 121A network engineer has multiple network devices to choose from to connect 10 PCs to a network. Requirements include that packet collisions are minimized foreach client and that the physical network topology must be highly scalable. Which two connectivity options should the engineer use? (Choose two.)

A. Connect each of the 10 client PCs to a network switch.B. Use a star physical network topology.C. Connect each of the 10 client PCs to a network router.D. Connect each of the 10 client PCs to a network hub.E. Use a ring physical network topology.F. Use a mesh physical network topology.



QUESTION 122Which protocol operates at Layer 3 of OSI model and is used for host addressing?

A. TCPB. UDPC. IPD. RIP

E. OSPF



QUESTION 123After a firewall is installed in the network, users have lost FTP access to the remote Cisco Nexus switches, but the TFTP access still works. Which protocol isblocked by the firewall?

A. UDPB. TCPC. IPD. ICMPE. RIP



QUESTION 124A network operations team needs to monitor the health of Cisco Nexus switches. Which type of UDP-based protocol should be configured on these devices formanagement and monitoring?

A. SSHB. TELNETC. FTPD. SNMPE. SMTP



QUESTION 125Which protocol is supported when OSPFv2 is used as the routing protocol?

A. IPv6B. IPv4C. UDPD. TCP



QUESTION 126What is the maximum distance for 100Base-TX?

A. 10mB. 100mC. 400mD. 500m



QUESTION 127What is the result when two data transmissions are sent at the same time?

A. A collision occurs and both devices stop transmission and back off.B. A collision occurs and one device retransmits.

C. All traffic continues to transmit.D. A collision occurs and both devices resend transmissions.



QUESTION 128There is a large amount of traffic inside a network segment with a destination address ofFF:FF:FF:FF:FF:FF. What type of traffic uses this address?

A. FF:FF:FF:FF:FF:FF is the Layer 2 broadcast address.B. FF:FF:FF:FF:FF:FF is the Layer 2 network address.C. FF:FF:FF:FF:FF:FF is the Layer 3 broadcast address.D. FF:FF:FF:FF:FF:FF is the Layer 3 network address.E. FF:FF:FF:FF:FF:FF is multicast traffic.



QUESTION 129What two commands are used to modify the MAC Table? (Choose two.)

A. no mac-address-table staticB. show address-tableC. mac-address-table agingD. show mac-address-tableE. address-table static

Correct Answer: ACSection: (none)

Explanation


QUESTION 130Which situation will cause a switch to flood traffic out all of the ports on the switch?

A. The switch receives a destination MAC address of 0000.0000.0000.B. The switch receives a destination MAC of ffff.ffff.ffff.C. The switch receives a source MAC address of 0000.0000.0000.D. The switch's TCAM reaches the MAC address limit.E. The switch was configured in cut-through mode.



QUESTION 131A network engineer notices that the MAC address table on a network switch is full. What type of Layer 2 network behavior will occur while the network MAC addresstable remains full?

A. All frames generated within the Layer 2 domain will be flooded, regardless of the destination or the existence of a MAC address in the table.B. All frames generated within the Layer 2 domain will be flooded unless the destination is contained within the MAC address table.C. The switch will reset the MAC address table, removing all existing learned MAC addresses.D. The switch will automatically reduce the aging time of the MAC address table.



QUESTION 132A network engineer is tasked with installing a new switch into the network access layer. The switch needs to see VTP data, but does not need to participate in the

VTP domain. What VTP mode should the switch be configured for?

A. clientB. transparentC. serverD. offE. active



QUESTION 133What are two valid VTP commands? (Choose two.)

A. feature vtpB. vtp client modeC. vtp VLAND. vtp versionE. vtp static

Correct Answer: ADSection: (none)Explanation


QUESTION 134There are native VLAN mismatch errors in both switch system logs. An engineer changed the native VLAN to VLAN 50 on switch 2. The commands switchporttrunk allowed VLAN add 50 and switchport trunk native VLAN 50 are executed on switch 2. What two events will result from executing these commands? (Choosetwo.)

A. Native VLAN mismatch errors cease in the system log.B. Native VLAN mismatch errors continue in the system log.

C. VLAN's 10,20,31, and 50 forward traffic.D. VLAN's 10,20, and 31 forward traffic while 50 forwards untagged traffic.E. VLAN's 10, 20, and 31 forward traffic, 50 remains down.F. Native VLAN mismatch error disables the ports on both switches.



QUESTION 135When configuring a trunk port on a Nexus switch, what two options must be configured before the port will participate in a 802.1Q trunk group? (Choose two.)

A. configure a native VLANB. enable trunkingC. set port speed and duplexD. configure 802.1Q encapsulationE. enable spanning tree loop-guard



QUESTION 136A network engineer is verifying Layer 2 connectivity of a server to a Cisco Nexus switch by checking Address Resolution Protocol table statistics. Which commandshows the MAC address, physical interface, VLAN, and IP address of a server on a Cisco Nexus switch?

A. show ip arp detailB. show ip arpC. show ip arp interfaceD. show arp detail

Correct Answer: A



QUESTION 137What is the most efficient Class C IP subnet that allows for at least 67 usable host addresses?

A. 192.168.67.0 255.255.128.0B. 172.16.100.0 255.255.255.128C. 192.168.100.0 255.255.255.128D. 10.100.100.0 255.255.255.128E. 172.16.67.0 255.255.128.0F. 10.100.67.0 255.255.128.0



QUESTION 138A router cannot forward packets to supernets. What are two causes of this problem? (Choose two.)

A. The router is configured with Classless IP routing.B. The router is configured with Classfull IP routing.C. IP Classless command is not configured on the router.D. Only static routing is configured.E. Variable Length Subnet Mask is not used in choosing the IP addresses.



QUESTION 139What range of IP addresses could be used in an external public zone of a data center?

A. 172.32.192.0/19B. 224.100.34.0/32C. 10.88.45.0/24D. 209.165.201.0/27E. 192.168.11.32/28



QUESTION 140An engineer has implemented EIGRP in the data center with a large OSPF routed environment. All EIGRP routes were functioning properly until enabling EIGRProute summarization. Legacy OSPF routes are now being used for route selection. Why have the routes changed?

A. EIGRP summary routes have a higher administrative distance than EIGRP specific routesB. reduce the administrative distance for the EIGRP summarized routesC. OSPF has a more specific route with EIGRP summarization enabledD. increase the administrative distance for the OSPF route processE. modify the bandwidth and delay metrics to be preferential over OSPF



QUESTION 141What option tests hardware to verify that all components of the device are operational and present?

A. NVRAMB. POST

C. BIOSD. Bootstrap



QUESTION 142Where are start-up configurations saved on a Cisco router?

A. FlashB. ROMC. NVRAMD. Boot Flash



QUESTION 143

Refer to the exhibit. When PC-A communicates with the Server what will the source MAC address be in the received frames at PC-A?

A. MAC address of router interface Eth1B. MAC address of router interface Eth2C. MAC address of the NIC in the ServerD. MAC address of switch interface E1/9



QUESTION 144

Refer to the exhibit. What two destination addresses will be in the packet and frame header generated at PC-A for traffic going to the Server? (Choose two.)

A. IP address of the ServerB. MAC address of router interface eth1C. IP address of router interface Eth1D. MAC address of the Server

E. IP address of switch interface E1/9F. MAC address of switch interface E1/9




640-911 - introducing cisco data center networking … - introducing cisco data center networking...

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