implementing cisco service provider advanced routing

Implementing Cisco Service Provider Advanced Routing Solutions (SPRI)

Cisco 300-510

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Total Demo Questions: 10

Total Premium Questions: 125

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Topic Break Down

Topic No. of Questions

Topic 1, Unicast Routing 56

Topic 2, Multicast Routing 18

Topic 3, Routing Policy and Manipulation 23

Topic 4, MPLS and Segment Routing 28

Total 125



QUESTION NO: 1

Refer to the exhibit

An engineer is configuring service traffic from router R1 to R6 as shown. Which additional configuration must the engineer implement so that the LDP and SR domains will participate and interwork with each other?

A. Router2(config)# segment-routing Router2(config-sr)# ldp mapping-serverRouter2(config-sr-ms)# prefix-sid-mapRouter2(config-sr-ms-map)#Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 4

B. Router2(config)# segment-routing Router2(config-sr)# sr mapping-serverRouter2(config-sr-ms)# ldp-sid-mapRouter2(config-sr-ms-map)# address-family ipv4Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50

C. Router2(config)# segment-routing Router2(config-sr)# mapping-serverRouter2(config-sr-ms)# prefix-sid-mapRouter2(config-sr-ms-map)# address-family ipv4Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50

D. Router2(config)# segment-routing Router2(config-sr)# ldp mapping-serverRouter2(config-sr-ms)# prefix-sid-mapRouter2(config-sr-ms-map)# address-family ipv4Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 40

ANSWER: C

Explanation:



Reference: https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/segment-routing/configuration/guide/b-seg-routing-cg-asr9k/b-seg-routing-cg-asr9k_chapter_01001.html

QUESTION NO: 2



Refer to the exhibit. P1 and PE3 Cisco IOS XR routers are directly connected and have this configuration applied. The BGP session is not coming up. Assume that there is no IP reachability problem and both routers can open tcp port 179 to each other. Which two actions fix the issue? (Choose two.)

A. Change MD5 to HMAC-SHA1-12

B. Change MD5 to HMAC-ESP

C. Change MD5 to SHA-1

D. Change MD5 to HMAC-MD5

E. Remove the send and accept lifetime under key 1

ANSWER: A D

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-0/security/configuration/guide/sc40crsbook_chapter5.html

QUESTION NO: 3

A network consultant is troubleshooting IS-IS instances to identify why a routing domains is having communication problems between the two instances. Which description of the possible cause of issues in the routing domain is true?

A. The same interface cannot be advertised in two different IS-IS instances

B. The IS-IS “ISP” and “ISP2” instances are unrelated and unable to intercommunicate

C. The configured IS-IS NSEL value is not allowing the routing systems to establish a neighborship

D. The interface mode ip router is-is command was not included in the script

ANSWER: A

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_isis/configuration/xe-3s/irs-xe-3s-book/irs-instance-vrf.html

QUESTION NO: 4

Which two differences should be considered when deciding whether to implement routing policies or route maps? (Choose two.)

A. Sequences are added after implementing a route map, but routing policies must be reconfigured when change is needed

B. Route maps are supported in Cisco IOS Software and routing policies are supported in Cisco IOS XR Software



C. Route maps are implemented using hierarchical policies, but routing policies must be implemented sequentially

D. Route maps require an explicit deny at the end of the sequence, but routing policies have an implicit deny at the end of the program

E. Route policies require sequence numbers, but route maps are implemented without sequencing

ANSWER: A B

QUESTION NO: 5

Refer to the exhibit. Router 1 is a core ABR in a Cisco Unified MPLS environment. All of the router 1 BGP peers are established, but traffic between customers is failing. Which BGP configuration must be added to the configuration?

A. It must be configured for graceful restart

B. It must be configured with a route reflector

C. It must be configured with send labels

D. It must be configured with PIC edge

ANSWER: C

QUESTION NO: 6



Refer to the exhibit. CE1 is the gateway router into the provider network via PE1. A network operator must inject a default route into OSPF area 0. All devices inside area 0 must be able to reach PE1.

Which configuration achieves this goal?

A. Option A

B. Option B



C. Option C

D. Option D

ANSWER: C

Explanation:

Reference: https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/47868-ospfdb9.html

QUESTION NO: 7 - (DRAG DROP)

DRAG DROP

Drag and drop the attributes for the BGP route selection on the left into the correct order on the right. Not all options are used.

Select and Place:



ANSWER:



Explanation:

Reference: https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13753-25.html

QUESTION NO: 8



Refer to the exhibit. Traffic flow from router R1 to router R6 is delay-sensitive. It must consider potential link-failure and node-failure conditions. Which configuration must an engineer apply to router R1 to route traffic to router R6 if router R2 fails?



A. Option A

B. Option B

C. Option C

D. Option D

ANSWER: C

QUESTION NO: 9

While configuring Cisco NSF awareness, a network engineer enters the bgp graceful-restart command after the BGP session is established in a router that runs IOS XE Software. Graceful restart capabilities are not exchanged. Which two actions should be taken? (Choose two.)

A. Reload the router

B. Verify that BGP route dampening is configured

C. Reduce BGP convergence time



D. Issue the clear ip bgp * command

E. Issue the show ip bgp neighbors command.

ANSWER: A D

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16/irg-xe-16-book/bgp-nonstop-forwarding-awareness.html

QUESTION NO: 10

You have configured routing policies on a Cisco IOS XR device with routing policy language. Which two statements about the routing policies are true? (Choose two.)

A. The routing policies affect BGP-related routes only.

B. If you make edits to an existing routing policy without pasting the full policy into the CLI, the previous policy is overwritten.

C. You can change an existing routing policy by editing individual statements.

D. The routing policies are implemented in a sequential manner.

E. The routing policies are implemented using route maps.

ANSWER: C D


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