1/ What is a PDU?a) corruption of a frame during transmissionb) data reassembled at the destinationc) retransmitted packets due to lost communicationd) a layer specific encapsulation2/ What is the primary purpose of Layer 4 port assignment?a) to identify devices on the local mediab) to identify the hops between source and destinationc) to identify to the intermediary devices the best path through the networkd) to identify the source and destination end devices that are communicatinge) to identify the processes or services that are communicating within the end devices3/ What are two functions of encapsulation? (Choose two.)a) tracks delay between end devicesb) allows modification of the original data before transmissionc) enables consistent network paths for communicationd) ensures that data pieces can be directed to the correct receiving end devicee) identifies pieces of data as part of the same communication4/ During the encapsulation process, what occurs at the data link layer?a) The physical address is added.b) No address is added.c) The process port number is added.d) The logical address is added.5/ Which statements correctly identify the role of intermediary devices in the network? (Choose three.)a) manage data flowsb) determine pathways for datac) initiate data communicationsd) retime and retransmit data signalse) originate the flow of dataf) final termination point for data flow6/ What is a primary function of the trailer information added by the data link layer encapsulation?a) supports error detectionb) provides delivery to correct destinationc) ensures ordered arrival of datad) assists intermediary devices with processing and path selectione) identifies the devices on the local network7/ What can be identified by examining the network layer header?a) the destination device on the local mediab) the bits that will be transferred over the mediac) the source application or process creating the datad) the destination host address8/

Refer to the exhibit. Which set of devices contains only end devices?a) A, C, Db) C, D, G, H, I, Jc) B, E, G, Hd) D, E, F, H, I, Je) E, F, H, I, J9/ What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?a) physical, network, application, data link, presentation, session, transportb) application, physical, session, transport, network, data link, presentationc) application, presentation, physical, session, data link, transport, networkd) presentation, data link, session, transport, network, physical, applicatione) application, presentation, session, transport, network, data link, physical10/

Refer to the exhibit. What type of network is shown?a) WANb) MANc) LANd) WLAN11/ Which three statements best describe a Local Area Network (LAN)? (Choose three.)a) A LAN is usually in a single geographical area.b) The connection between segments in the LAN is usually through a leased connectionc) The network is administered by a single organization.d) The security and access control of the network are controlled by a service provider.e) Each end of the network is generally connected to a Telecommunication Service Provider (TSP).f) A LAN provides network services and access to applications for users within a common organization.12/

Refer to the exhibit. Which term correctly identifies the device type that is included in the area B?a) Sourcreb) Endc) Transferd) Intermediary13/ Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)a) Networkb) Transportc) Physicald) Data Linke) Session14/

Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?a) Pipingb) PDUc) Streamingd) Multiplexinge) Encapsulation15/

Refer to the exhibit. Which three labels correctly identify the network types for the network segments that are shown? (Choose three.)a) Network A WANb) Network B WANc) Network C LANd) Network B MANe) Network C WANf) Network A LAN16/ What device is considered an intermediary device?a) File serverb) IP phonec) Laptopd) Printer17/ Which characteristic correctly refers to end devices in a network?a) manage data flowsb) originate data flowc) retime and retransmit data signalsd) determine pathways for data18/

Refer to the exhibit. "Cell A" at IP address 10.0.0.34 has established an IP session with "IP Phone 1" at IP address 172.16.1.103. Based upon the graphic, which device type best describes the function of wireless device "Cell A?"a) the destination deviceb) an end devicec) an intermediate deviced) a media device19/ What is the purpose of the TCP/IP Network Access layer?a) path determination and packet switchingb) data presentationc) reliability, flow control, and error detectiond) network media controle) the division of segments into packets20/ Which layer encapsulates the segment into packets?a) Physicalb) Data Linkc) Networkd) Transport21/ Select the statements that are correct concerning network protocols. (Choose three.)a) define the structure of layer specific PDU'sb) dictate how to accomplish layer functionsc) outline the functions necessary for communications between layersd) limit the need for hardware compatibilitye) require layer dependent encapsulationsf) eliminate standardization among vendors22/ What statements are true regarding addresses found at each layer of the OSI model? (Choose two.)a) Layer 2 may identify devices by a physical address burned into the network cardb) Layer 2 identifies the applications that are communicatingc) Layer 3 represents a hierarchical addressing schemed) Layer 4 directs communication to the proper destination networke) Layer 4 addresses are used by intermediary devices to forward dataf) Layer 4 directs communication to the proper destination network23/ A network administrator has been asked to provide a graphic representation of exactly where the company network wiring and equipment are located in the building. What is this type of drawing?a) logical topologyb) physical topologyc) cable pathd) wiring gride) access topology24/ What is a primary purpose of encapsulating packets into frames?a) provide routes across the internetworkb) format the data for presentation to the userc) facilitate the entry and exit of data on mediad) identify the services to which transported data is associated

25/ What two facts are true when a device is moved from one network or subnet to another? (Choose two.)a) The Layer 2 address must be reassigned.b) The default gateway address should not be changed.c) The device will still operate at the same Layer 2 address.d) Applications and services will need additional port numbers assigned.e) The Layer 3 address must be reassigned to allow communications to the new network.26/ What are three characteristics of valid Ethernet Layer 2 addresses? (Choose three.)a) They are 48 binary bits in length.b) They are considered physical addresses.c) They are generally represented in hexadecimal format.d) They consist of four eight-bit octets of binary numberse) They are used to determine the data path through the network.f) They must be changed when an Ethernet device is added or moved within the network.27/ What determines the method of media access control? (Choose two.)a) network layer addressingb) media sharingc) application processesd) logical topologye) intermediary device function28/

Refer to the exhibit. A frame is being sent from the PC to the laptop. Which source MAC and IP addresses will be included in the frame as it leaves RouterB? (Choose two.)a) source MAC PCb) source MAC - S0/0 on RouterAc) source MAC - Fa0/1 on RouterBd) source IP - PCe) source IP - S0/0 on RouterAf) source IP - Fa0/1 of RouterB29/ Which statements describe the logical token-passing topology? (Choose two.)a) Network usage is on a first come, first serve basis.b) Network usage is on a first come, first serve basis.c) Data from a host is received by all other hosts.d) Electronic tokens are passed sequentially to each other.e) Token passing networks have problems with high collision rates.30/ What is true regarding media access control? (Choose three.)a) Ethernet utilizes CSMA/CDb) 802.11 utilizes CSMA/CDc) contention-based access is also known as deterministicd) defined as placement of data frames on the mediae) Data Link layer protocols define the rules for access to different mediacontrolled access contains data collisions31/ Which three factors should be considered when implementing a Layer 2 protocol in a network? (Choose three.)a) the Layer 3 protocol selectedb) the geographic scope of the networkc) the PDU defined by the transport layerd) the physical layer implementatione) the number of hosts to be interconnected32/ Which sublayer of the data link layer prepares a signal to be transmitted at the physical layer?a) LLCb) MACc) HDLCd) NIC33/ Which options are properties of contention-based media access for a shared media? (Choose three.)a) non-deterministicb) less overheadc) one station transmits at a timed) collisions existe) devices must wait their turnf) token passing34/ What is a function of the data link layer?a) provides the formatting of datab) provides end-to-end delivery of data between hostsc) provides delivery of data between two applicationsd) provides for the exchange data over a common local media35/ What is the purpose of the preamble in an Ethernet frame?a) is used as a pad for datab) identifies the source addressc) identifies the destination addressd) marks the end of timing informatione) is used for timing synchronization 36/

Refer to the exhibit. Which statement describes the media access control methods that are used by the networks in the exhibit?a) All three networks use CSMA/CAb) None of the networks require media access control.c) Network 1 uses CSMA/CD and Network 3 uses CSMA/CA.d) Network 1 uses CSMA/CA and Network 2 uses CSMA/CD.e) Network 2 uses CSMA/CA and Network 3 uses CSMA/CD.37/ What is true concerning physical and logical topologies?a) The logical topology is always the same as the physical topology.b) Physical topologies are concerned with how a network transfers frames.c) Physical signal paths are defined by Data Link layer protocols.d) Logical topologies consist of virtual connections between nodes.38/

Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP tables are complete, which MAC address will Host A place in the destination address field of Ethernet frames destined for www.server?a) 00-1c-41-ab-c0-00b) 00-0c-85-cf-65-c0c) 00-0c-85-cf-65-c1d) 00-12-3f-32-05-af39/

Refer to the exhibit. How many CRC calculations will take place as traffic routes from the PC to the laptop?a) 1b) 2c) 4d) 6e) 8f) 1640/ What is the primary purpose of the trailer in a data link layer frame?a) define the logical topologyb) provide media access controlc) support frame error detectiond) carry routing information for the frame41/ What is a characteristic of a logical point-to-point topology?a) The nodes are physically connected.b) The physical arrangement of the nodes is restricted.c) The media access control protocol can be very simple.d) The data link layer protocol used over the link requires a large frame header.42/ In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?a) coaxb) fiberc) Cat5e UTPd) Cat6 UTPe) STP43/ Which type of cable run is most often associated with fiber-optic cable?a) backbone cableb) horizontal cablec) patch cabled) work area cable44/ Which of the following is a characteristic of single-mode fiber-optic cable?a) generally uses LEDs as the light sourceb) relatively larger core with multiple light pathsc) less expensive than multimoded) generally uses lasers as the light source45/ Which method of signal transmission uses radio waves to carry signals?a) electricalb) opticalc) wirelessd) acoustic46/

Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?a) coax cableb) rollover cablec) crossover cabled) straight-through cable47/ What are three measures of data transfer? (Choose three.)a) goodput b) frequencyc) amplituded) throughpute) crosstalkf) bandwidth48/ An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?a) light injectorb) OTDRc) TDRd) multimeter49/ Which fiber connector supports full duplex Ethernet?a) b) c) d) 50/ In most business LANs, which connector is used with twisted-pair networking cable?a) BNCb) RJ-11 c) RJ-45d) Type F51/ Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?a) Presentationb) Transportc) Data Linkd) Physical52/ With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?a) the magnetic field around the adjacent pairs of wireb) the use of braided wire to shield the adjacent wire pairsc) the reflection of the electrical wave back from the far end of the cabled) the collision caused by two nodes trying to use the media simultaneously53/ What is a primary role of the Physical layer in transmitting data on the network?a) create the signals that represent the bits in each frame on to the mediab) provide physical addressing to the devicesc) determine the path packets take through the networkd) control data access to the media54/ What is considered a benefit of wireless as a media choice?a) more host mobilityb) lower security risksc) reduced susceptibility to interferenced) less impact of the surroundings on the effective coverage area55/ When is a straight-through cable used in a network?a) when connecting a router through the console portb) when connecting one switch to another switchc) when connecting a host to a switchd) when connecting a router to another router56/ What is a possible effect of improperly applying a connector to a network cable?a) Data will be forwarded to the wrong node.b) Data transmitted through that cable may experience signal loss.c) An improper signaling method will be implemented for data transmitted on that cable.d) The encoding method for data sent on that cable will change to compensate for the improper connection.57/ What characteristic of UTP cable helps reduce the effects of interference?a) the metal braiding in the shieldingb) the reflective cladding around corec) the twisting of the wires in the cabled) the insulating material in the outer jacket58/ Which characteristics describe fiber optic cable? (Choose two.)a) It is not affected by EMI or RFI.b) Each pair of cables is wrapped in metallic foil.c) It combines the technique of cancellation, shielding and twisting to protect data.d) It has a maximum speed of 100 Mbps.e) It is the most expensive type of LAN cabling.59/ Which option identifies the primary interface which would be used for initial configuration of a Cisco router?a) AUX interfaceb) Ethernet interfacec) serial interfaced) console interface60/ A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which type of media would best meet these requirements?a) STPb) UTPc) coaxiald) single-mode fibere) multimode fiber61/

Refer to the exhibit. What destination IP address will PC1 place in the header for a packet destined for PC2?a) 192.168.1.1b) 192.168.2.1c) 192.168.2.2d) 192.168.3.1e) 192.168.3.5462/

Refer to the exhibit. Based on the IP configuration shown, what would be the result of Host A and Host B attempting to communicate outside the network segment?a) both host A and B would be successfulb) host A would be successful, host B would failc) host B would be successful, host A would faild) both Host A and B would fail63/ What type of network cable is used between a terminal and a console port?a) cross-overb) straight-throughc) rolloverd) patch cable64/

Refer to the exhibit. Assume that all devices are using default settings. How many subnets are required to address the topology that is shown?a) 1b) 3c) 4d) 5e) 765/ How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?a) 30b) 256c) 2046d) 2048e) 4094f) 409666/ Which three statements are true about the role of routers in the network? (Choose three.)a) They propagate broadcasts.b) They enlarge collision domains.c) They segment broadcast domains.d) They interconnect different network technologies.e) Each router interface requires a separate network or subnet.f) They maintain a common frame format between LAN and WAN interfaces.67/ Which device is used to create or divide broadcast domains?a) hubb) switchc) bridged) routere) repeater68/

Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)a) connecting a PC to a routers console portb) connecting two routers together via their fast ethernet portsc) connecting two switches together at gigabit speedsd) connecting a PC to a switch at Gigabit Ethernet speedse) connecting two devices with the same interface type at Fast Ethernet speed69/ Which three types of connectors are commonly associated with Ciscos V.35 serial cables? (Choose three.)a) RJ 11b) DB 60c) Winchester 15 pind) DB 9e) smart serialf) RJ 4570/

Refer to the exhibit. Which three statements identify the type of cabling that would be used in the segments that are shown? (Choose three.)a) Segment 1 uses backbone cabling.b) Segment 1 uses a patch cable.c) Segment 3 uses patch cabling.d) Segment 3 uses vertical cabling.e) Segment 3 uses horizontal cabling.f) Segment 4 uses vertical cabling.71/

Refer to the exhibit. A student is setting up a home network primarily used for extensive file transfers, streaming video, and gaming. Which network device is best suited to these types of activities in the topology shown?a) wireless access pointb) routerc) hubd) switch72/

Refer to the exhibit. A network administrator has decided to use packet capture software to evaluate all traffic from the student subnet on the way to the Internet. To ensure that all packets are captured, what network device should be used to connect the monitoring station to the network between R1 and R2?a) routerb) hubc) switchd) wireless access point73/ What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)a) greater distances per cable runb) lower installation costc) limited susceptibility to EMI/RFId) durable connectionse) greater bandwidth potentialf) easily terminated74/ Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork?a) 255.255.0.0b) 255.255.255.0c) 255.255.254.0d) 255.255.248.075/ To establish a console connection from a computer to a Cisco router, which cable wiring option would be used?a) crossover cableb) straight through cablec) rollover cabled) V.35 cable76/ A company is planning to subnet its network for a maximum of 27 hosts. Which subnet mask would provide the needed hosts and leave the fewest unused addresses in each subnet?a) 255.255.255.0b) 255.255.255.192c) 255.255.255.224d) 255.255.255.240e) 255.255.255.24877/

Refer to the exhibit. How many subnets are required to support the network that is shown?a) 2b) 3c) 4d) 578/ What does the term attenuation mean in data communication?a) loss of signal strength as distance increasesb) time for a signal to reach its destinationc) leakage of signals from one cable pair to anotherd) strengthening of a signal by a networking device79/

A network technician has been allocated the 192.168.1.0/24 private IP address range for use in the network that shown in the exhibit. Which subnet mask would be used to meet the host requirements for segment A of this internetwork?a) 255.255.255.128b) 255.255.255.192c) 255.255.255.224d) 255.255.255.240e) 255.255.255.24880/ What are three common methods for setting a UTP Ethernet port to MDI or MDIX operation? (Choose three.)a) direct configuration of the deviceb) cable color code associationc) cable selection and configurationd) use of cable testers to determine pinoutse) the enabling of the mechanism to electrically swap the transmit and receive pairsf) the automatic detection and negotiating of MDI/MDIX operation of the port81/

Refer to the exhibit. Which three statements are true about the exhibited topology? (Choose three.)a) Hosts B and C are in the same subnet.b) Five broadcast domains are present.c) Host B is using a crossover cable to connect to the router.d) Four broadcast domains are present.e) Five networks are shown.f) Host B is using a rollover cable to connect to the router.82/ On a Cisco router, which interface would be used to make the initial configuration?a) b) c) d) 83/ Immediately after a router completes its boot sequence, the network administrator wants to check the routers configuration. From privileged EXEC mode, which of the following commands can the administrator use for this purpose? (Choose two.)a) Show flashb) Show NVRAMc) Show startup-configd) Show running-confige) Show version84/

Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?a) enable password classline console 0password ccnab) enable secret ciscoenable password classline console 0password ccna c) enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0enable password classline console 0password ccnad) enable secret ciscoenable password 7 14141E0A1F17line console 0password 7 020507550Ae) enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0enable password 7 14141E0A1F17line console 0password 7 020507550A85/

Refer to the exhibit. A network administrator on HostA has problems accessing the FTP server. Layer three connectivity testing was successful from HostA to the S1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB and run debug commands?a) RouterB(config)# enable secret classRouterB(config)# line vty 0 4RouterB(config-if)# loginb) RouterB(config)# enable secret classRouterB(config)# line vty 0 2RouterB(config-vty)# password ciscoRouterB(config-vty)# loginc) RouterB(config)# enable secret class RouterB(config)# line vty 0 RouterB(config-line)# password cisco RouterB(config-line)# logind) RouterB(config)# enable secret classRouterB(config)# line aux 0RouterB(config-line)# password ciscoRouterB(config-line)# logine) RouterB(config)# enable secret classRouterB(config)# line aux 0RouterB(config-vty)# password ciscoRouterB(config-vty)# login86/

The connection between routers B and C has been successfully tested. However, after rebooting router C, the administrator noticed the response time between networks 10.10.3.0 and 10.10.4.0 is slower. Ping between the two routers is successful. A trace route indicates three hops from router B to router C. What else can be done to troubleshoot the problem?a) Ping router B S0/1 connection from router C.b) Trace the connection between router B to router C S0/1.c) Issue a show ip route command in router B to verify routing is enabled.d) Issue a show ip interface brief command on router C.87/ Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?a) show running-configb) show startup-configc) show interfacesd) show ip routee) show versionf) show memory88/

Refer to the exhibit. Which names correctly identify the CLI mode represented by the prompt for Switch-East4#? (Choose two.)a) line configuration modeb) user executive modec) global configuration moded) privileged executive modee) interface configuration modef) enable mode89/ Which three terms correctly define the forms of help available within the Cisco IOS? (Choose three.)a) hot keysb) context-checkc) context-sensitived) structured checke) command overridef) command syntax check90/ When network services fail, which port is most often used to access a router for management purposes?a) AUXEthernetb) Consolec) Telnetd) SSH91/ In a Cisco router, when do changes made to the running-configuration take effect?a) after a system restartb) as the commands are enteredc) when logging off the systemd) when the configuration is saved to the startup-configuration92/ In a Cisco device, where is the IOS file stored prior to system startup?a) RAMb) ROMc) Flashd) NVRAM93/

Refer to the exhibit. What additional command is required to allow remote access to this switch?a) NA-SW1(config-if)# no shutdownb) NA-SW1(config)# enable password passwordc) NA-SW1(config)# ip default-gateway addressd) NA-SW1(config-if)# description description94/ A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a router to manage it. Which access method should be chosen?a) Telnetb) Consolec) AUXd) SSH95/

The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)a) Sydney(config-if)# ip address 201.100.53.2 255.255.255.0b) Sydney(config-if)# no shutdownc) Sydney(config-if)# ip address 201.100.53.1 255.255.255.224d) Sydney(config-if)# clock rate 56000e) Sydney(config-if)# ip host Melbourne 201.100.53.296/

Refer to the exhibit. What additional command is required to allow remote access to this switch?a) NA-SW1(config-if)# no shutdownb) NA-SW1(config)# enable password passwordc) NA-SW1(config)# ip default-gateway addressd) NA-SW1(config-if)# description description97/

Refer to the exhibit. A student is responsible for the IP addressing, configuration and connectivity testing of the network shown in the graphic. A ping from host B to host C results in a destination unreachable but a ping from host B to host A was successful. What two reasons could account for this failure based on the graphic and partial router output for the Dallas router? (Choose two.)a) The host A is turned off.b) The Fa0/0 interface on Dallas is shutdown.c) The LAN cable is disconnected from host B.d) The S0/0/1 IP address of Dallas is improperly configured.e) The Fa0/0 interface on Dallas is in a different subnet than host B.f) The clock rate is missing on the serial link between Dallas and NYC.98/ What command is used to change the default router name to Fontana?a) Router# name Fontanab) Router# hostname Fontanac) Router(config)# name Fontanad) Router(config)# hostname Fontana99/

Refer to the exhibit. The output is shown for the show ip route command executed on Router A. What does the IP address 192.168.2.2 represent?a) Gateway for the 192.168.1.0 networkb) Gateway for the 192.168.3.0 networkc) IP assigned to the serial port on Router Ad) IP assigned to the serial port on Router B100/ Which combination of keys would be used at the CLI prompt to interrupt a ping or traceroute process?a) Ctrl-Cb) Ctrl-Pc) Ctrl-Rd) Ctrl-Shift-6e) Ctrl-Z101/ Which three features allow TCP to reliably and accurately track the transmission of data from source to destination?a) encapsulationb) flow controlc) connectionless servicesd) session establishmente) numbering and sequencingf) best effort delivery102/ After a web browser makes a request to a web server that is listening to the standard port, what will be the source port number in the TCP header of the response from the server?a) 13b) 53c) 80d) 1024e) 1728103/ Which event occurs during the transport layer three-way handshake?a) The two applications exchange data.b) TCP initializes the sequence numbers for the sessions.c) UDP establishes the maximum number of bytes to be sent.d) The server acknowledges the bytes of data received from the client.104/

Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)a) This is a UDP header.b) This contains a Telnet request.c) This contains a TFTP data transfer.d) The return packet from this remote host will have an Acknowledgement Number of 43693.e) This is a TCP header.105/ Which is an important characteristic of UDP?a) acknowledgement of data deliveryb) minimal delays in data deliveryc) high reliability of data deliveryd) same order data delivery106/ With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?a) 0 to 255b) 256 to 1022c) 0 to 1023d) 1024 to 2047e) 49153 to 65535107/ Why is flow control used for TCP data transfer?a) to synchronize equipment speed for sent datab) to synchronize and order sequence numbers so data is sent in complete numerical orderc) to prevent the receiver from being overwhelmed by incoming datad) to synchronize window size on the servere) to simplify data transfer to multiple hosts108/ What are two features of the User Datagram Protocol (UDP)? (Choose two.)a) flow controlb) low overheadc) connectionlessd) connection-orientede) sequence and acknowledgements109/ What mechanism is used by TCP to provide flow control as segments travel from source to destination?a) sequence numbersb) session establishmentc) window sized) acknowledgments110/

Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.)a) The local host is using well-known port numbers to identify the source ports.b) A termination request has been sent to 192.135.250.10.c) Communication with 64.100.173.42 is using HTTP Secure.d) The local computer is accepting HTTP requests.e) 192.168.1.101:1042 is performing the three-way handshake with 128.107.229.50:80.111/ Why are port numbers included in the TCP header of a segment?a) to indicate the correct router interface that should be used to forward a segmentb) to identify which switch ports should receive or forward the segmentc) to determine which Layer 3 protocol should be used to encapsulate the datad) to enable a receiving host to forward the data to the appropriate applicatione) to allow the receiving host to assemble the packet in the proper order112/ Which transport layer protocol provides low overhead and would be used for applications which do not require reliable data delivery?a) TCPb) IPc) UDPd) HTTPe) DNS113/ Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?a) Applicationb) presentationc) sessiond) transporte) network114/ During a TCP communication session, if the packets arrive to the destination out of order, what will happen to the original message?a) The packets will not be delivered.b) The packets will be retransmitted from the source.c) The packets will be delivered and reassembled at the destination.d) The packets will be delivered and not reassembled at the destination.115/ Which information is found in both the TCP and UDP header information?a) sequencingb) flow controlc) acknowledgmentsd) source and destination port.116/

Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result?a) create a Layer 1 jam signalb) reach a timeout and resend the data that needs to be acknowledgedc) send a RESET bit to the hostd) change the window size in the Layer 4 header117/

Refer to the exhibit. In line 7 of this Wireshark capture, what TCP operation is being performed?a) session establishmentb) segment retransmitc) data transferd) session disconnecte) Bottom of Form118/ What is dynamically selected by the source host when forwarding data?a) destination logical addressb) source physical addressc) default gateway addressd) source port119/

Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?a) Host1 sends a segment with the ACK flag = 0, SYN flag = 0 to Host2.b) Host1 sends a segment with the ACK flag = 1, SYN flag = 0 to Host2.c) Host1 sends a segment with the ACK flag = 1, SYN flag = 1 to Host2.d) Host2 sends a segment with the ACK flag = 0, SYN flag = 1 to Host1.e) Host2 sends a segment with the ACK flag = 1, SYN flag = 0 to Host1.f) Host2 sends a segment with the ACK flag = 1, SYN flag = 1 to Host1.120/ Which two options represent Layer 4 addressing? (Choose two.)a) identifies the destination networkb) identifies source and destination hostsc) identifies the communicating applicationsd) identifies multiple conversations between the hostse) identifies the devices communicating over the local media121/

Refer to the exhibit. A network administrator is troubleshooting a connectivity problem and needs to determine the address that is used to forward network packets out the network. Using the netstat -r command, the administrator would identify which address as the address to which all hosts send packets that are destined for an outside network?a) 10.10.10.26b) 127.0.0.1c) 10.10.10.6d) 10.10.10.1e) 224.0.0.0122/

Refer to the exhibit. A network administrator notices that there are too many broadcasts on the network. What two steps can the network administrator take to resolve this problem? (Choose two.)a) Replace S2 with a router.b) Place all servers on S1.c) Disable TCP/IP broadcasts.d) Subnet the 192.168.0.0 /24 network.e) Disable all unused interfaces on the switches.123/ What two characteristics are commonly associated with dynamic routing protocols? (Choose two.)a) require no device configurationb) provide routers with up-to-date routing tablesc) require less processing power than static routes required) consume bandwidth to exchange route informatione) prevent manual configuration and maintenance of the routing table124/ In a connectionless system, which of the following is correct?a) The destination is contacted before a packet is sent.b) The destination is not contacted before a packet is sent.c) The destination sends an acknowledgement to the source that indicates the packet was received.d) The destination sends an acknowledgement to the source that requests the next packet to be sent.125/ What are the key factors to consider when grouping hosts into a common network? (Choose three.)a) gatewaysb) purposec) physical addressingd) software versione) geographic locationf) ownership126/ Which three statements are true about routes and their use? (Choose three.)a) If no route to the destination network is found, the packet is returned to the previous router.b) If the destination network is directly connected, the router forwards the packet to the destination host.c) If multiple network entries exist for the destination network, the most general route is used to forward the packet.d) If no route exists for the destination network and a default route is present, the packet is forwarded to the next-hop router.e) If the originating host has a default gateway configured, the packet for a remote network can be forwarded using that route.f) If a host does not have a route manually configured for the destination network, the host will drop the packet.127/ What are three common problems with a large network? (Choose three.)a) too few broadcastsb) performance degradationc) security issuesd) limited management responsibilitye) host identificationf) protocol compatibility128/

Refer to the exhibit. All devices shown in the exhibit have factory default settings. How many broadcast domains are represented in the topology that is shown?a) 3b) 5c) 7d) 8e) 4f) 11129/ When the destination network is not listed in the routing table of a Cisco router, what are two possible actions that the router might take? (Choose two.)a) The router sends an ARP request to determine the required next hop address.b) The router discards the packet.c) The router forwards the packet toward the next hop indicated in the ARP table.d) The router forwards the packet to the interface indicated by the source address.e) The router forwards the packet out the interface indicated by the default route entry.130/ What is the purpose of a default gateway?a) physically connects a computer to a networkb) provides a permanent address to a computerc) identifies the network to which a computer is connectedd) identifies the logical address of a networked computer and uniquely identifies it to the rest of the networke) identifies the device that allows local network computers to communicate with devices on other networks131/ What statement describes the purpose of a default route?a) A host uses a default route to transfer data to another host on the same network segment.b) A host uses a default route to forward data to the local switch as the next hop to all destinations.c) A host uses a default route to identify the Layer 2 address of an end device on the local network.d) A host uses a default route to transfer data to a host outside the local network when no other route to the destination exists.132/ Which IP packet field will prevent endless loops?a) type-of-serviceb) identificationc) flagsd) time-to-livee) header checksum133/ Which portion of the network layer address does a router use to forward packets?a) host portionb) broadcast addressc) network portiond) gateway address134/ What type of routing uses information that is manually entered into the routing table?a) dynamicb) interiorc) staticd) standard135/ If the default gateway is configured incorrectly on the host, what is the impact on communications?a) The host is unable to communicate on the local network.b) The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.c) The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.d) There is no impact on communications.136/ In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?a) destination network addressb) source network addressc) source MAC addressd) well known port destination address137/ What information is added during encapsulation at OSI Layer 3?a) source and destination MACb) source and destination application protocolc) source and destination port numberd) source and destination IP address138/

Refer to the exhibit. Using the network in the exhibit, what would be the default gateway address for host A in the 192.133.219.0 network?a) 192.135.250.1b) 192.31.7.1c) 192.133.219.0d) 192.133.219.1139/

Refer to the exhibit. The network in the exhibit is fully operational. What two statements correctly describe the routing for the topology that is shown? (Choose two.)a) 192.168.0.2 is the next-hop address that is used by R3 to route a packet from the 10.0.0.0 network to the 172.16.0.0 network.b) 10.0.0.1 is the next-hop address that is used by R1 to route a packet from the 192.168.12.0 network to the 10.0.0.0 network.c) 192.168.0.1 is the next-hop address that is used by R1 to route a packet from the 192.168.12.0 network to the 172.16.0.0 network.d) 172.16.0.1 is the next-hop address that is used by R3 to route a packet from the 10.0.0.0 to the 172.16.0.0 network.e) 192.168.0.1 is the next-hop address that is used by R2 to route a packet from the 172.16.0.0 network to the 192.168.12.0 network.f) 192.168.0.2 is the next-hop address that is used by R2 to route a packet from the 172.16.0.0 network to the 192.168.12.0 network.140/ What is a component of a routing table entry?a) the MAC address of the interface of the routerb) the destination Layer 4 port numberc) the destination host addressd) the next-hop address141/ Which intermediary devices could be used to implement security between networks? (Choose two.)a) routerb) hubc) switchd) firewalle) access pointf) bridge142/ Which of the following describe interframe spacing? (Choose two.)a) the minimum interval, measured in bit-times, that any station must wait before sending another frame.b) the maximum interval, measured in bit-times, that any station must wait before sending another frame.c) the 96-bit payload padding inserted into a frame to achieve a legal frame sized) the 96-bit frame padding transmitted between frames to achieve proper synchronizatione) the time allowed for slow stations to process a frame and prepare for the next frame.f) the maximum interval within which a station must send another frame to avoid being considered unreachable143/ Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.a) 85b) 90c) BAd) A1e) B3f) 1C144/ Which statements correctly describe MAC addresses? (Choose three.)a) dynamically assignedb) copied into RAM during system startupc) layer 3 addressd) contains a 3 byte OUIe) 6 bytes longf) 32 bits long145/ Ethernet operates at which layers of the OSI model? (Choose two.)a) Network layerb) Transport layerc) Physical layerd) Application layere) Session layerf) Data-link layer146/

Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.)a) A packet with the destination IP of Router_B.b) A frame with the destination MAC address of Switch_A.c) A packet with the destination IP of Router_A.d) A frame with the destination MAC address of Router_A.e) A packet with the destination IP of Server_B.f) A frame with the destination MAC address of Server_B. 147/ Ethernet operates at which layers of the OSI model? (Choose two.)a) Network layerb) Transport layerc) Physical layerd) Application layere) Session layerf) Data-link layer148/ When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?a) The hosts return to a listen-before-transmit mode. b) Router#c) Router(config)#d) Router(config-line)#218/ An organization has decided to use IP addresses in the range 172.20.128.0 to 172.20.143.255. Which combination of network ID and subnet mask identifies all IP addresses in this range?a) Network ID: 172.20.128.0 Subnet mask: 255.255.255.0b) Network ID: 172.20.128.0 Subnet mask: 255.255.0.0c) Network ID: 172.20.128.0 Subnet mask: 255.255.224.0d) Network ID: 172.20.128.0 Subnet mask: 255.255.240.0e) Network ID: 172.20.128.0 Subnet mask: 255.255.255.240219/ Which three IPv4 addresses represent valid network addresses for a subnet? (Choose three.)a) 192.168.9.64/28b) 192.168.9.146/28c) 192.168.9.96/28d) 192.168.9.129/26e) 192.168.9.51/26f) 192.168.9.64/26220/ Two routers are connected via their serial ports in a lab environment. The routers are configured with valid IP addresses, but they cannot ping each other. The show interface serial0/0 command shows that the serial0/0 interface is up but the line protocol is down. What could be the cause of this problem?The no shutdown command has not been applied to the interfaces.The clock rate command has not been entered on the DCE interface.The interface timers are not cleared.The FastEthernet interface is emulating a serial interface by assigning it a timing signal.221/ Which device should be used for enabling a host to communicate with another host on a different network?a) Switchb) Hubc) routerd) host222/ Which OSI layer uses the header information to reassemble the data segments into streams?a) application layerb) network layerc) presentation layerd) session layere) transport layer223/ Which three statements are true about transport layer protocols? (Choose three.)a) The UDP transport layer protocol provides for low overhead data delivery.b) The TCP transport layer protocol uses windowing and acknowledgments for reliable transfer of data.c) The TCP and UDP port numbers are used by application layer protocols.d) The TCP transport layer protocol provides services to direct the data packets to their destination hosts.e) The UDP transport layer protocol is a connection-oriented protocol.f) The UDP transport layer protocol keeps track of all the data segments in each conversation.224/ To enhance security in a network, the network administrator uses these commands:Router(config)# line console 0Router(config-line)# password j1mdi2Router(config-line)# loginWhat two conclusions are evident from these commands? (Choose two.)a) Users who attempt to connect to the console port of the router must enter a password.b) The entries permit access through the console by the use of j1mdi2 as the password.c) The entries eliminate the need for authentication.d) Access through the console will be denied because the console configuration is incomplete.e) The entries prevent passwords from being displayed as plain text.225/ Which layer adds the destination and source process numbers to ensure that data is delivered to the correct application?a) physical layerb) data link layerc) network layerd) transport layer226/ Which three statements are true about network layer addressing? (Choose three.)a) It uses the last octet of the IP address to identify the network.b) It supports data communications between networks.c) It is configured by the network technician.d) It is a 16-bit IPv4 address.e) It prevents broadcasts.f) It uniquely identifies each host.227/ Which OSI layer uses the header information to reassemble the data segments into streams?a) application layerb) network layerc) presentation layerd) session layere) transport layer