300-510 Practice Exam Questions with Answers Implementing Cisco Service Provider Advanced Routing Solutions Certification

After you change the IP address on an IOS XR router, you cannot ping the new address.

Which step did you forget to complete?

Refer to the exhibit. A network engineer is configuring router R3 to handle multicast streams, but Host-2 cannot send subscriptions messages to the IPTV source. Which configuration must the engineer apply to router R3 so it passes the IPTV stream to Host-2?

Level 3 switch SW1 is part of an EIGRP enabled network located at the edge of an area. Cisco Express Forwarding and SSO are enabled on the router. A network engineer must minimize the downtime of data-transmit services in the network. HSRP group 2 has already been configured with standby preempt delay minimum 2 and standby timers 140. Which additional action must the engineer take on SW1 to suppress routing flaps for 2 minutes?

Refer to the exhibit. R21 is a multicast source sending multicast traffic 224.1.1.1 to R23, with RP22 serving as the rendezvous point inside AS65222. A network engineer noticed that when R21 goes down, R12 in AS65111 starts to send the same multicast group 224.1.1.1 through RP11. Which action resolves the issue ?

For which reason do you deploy BGP confederations within a BGP transit backbone?

Refer to the exhibit. Customers A and C are experiencing packet drops when connecting to the application server While troubleshooting the problem the network engineer confirms that the IS-lS Level- 1/2 adjacency is up between routers A B C. and D and both customers can communicate with the database server without packet loss Which action must the engineer take to resolve the issue?

Refer to the exhibit.

All routers on this network have been configured with P1M-SM and R1 is the rendezvous point However, when asymmetric routing is implemented to modify link usage the network begins to drop certain multicast traffic Which action corrects the problem?

Refer to the exhibit.

R3 is:

Which command must the engineer implement to resolve the issue?

A R3# ip msdp sa-filter in 192.168.3.1

B. R3# no ip msap sa-filter in 192.168.1.1

C R3# no ip msdp peer 192.168.1.1

D. R3# ip msdp sa-filter out 192.168.1.1

What can be used to determine a path from the head-end to a tail-end router when implementing SR-TE with a head-end, with little information on the network topology?

Which output from the show isis interface command helps an engineer troubleshoot an IS-IS adjacency problem on a Cisco IOS-XR platform?

Drag and drop the features from the left into the order of operations for SRv6 SSH field creation and forwarding on the right.

Refer to the exhibit.

CE1 and CE2 are iBGP neighbors in AS 65516. All traffic that exits AS 65516 must use the link from CE1 to PE1. CE1 is advertising a higher local preference to CE2, but traffic from CE2 still prefers the PE2 link. Which action corrects the problem?

An engineer is working to implement segment routing protocol on the customer's core network. Which step should the engineer take before the segment routing is enabled and is running with BGP?

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?

After an engineer configures BGP in R1, it starts receiving this message

*Jun 29 13:30:50.122: %BGP-5-ADJCHANGE: neighbor 192.168.10.1 Down User reset

Jun 29 13:30:52.341: %BGP-3-NOTIFICATION: sent to neighbor 192.168.10.1 2/6 (unacceptable hold time) 0 bytes

Which action makes the peering come back up again?

Which difference must an engineer consider when Implementing Inter-domain and Intra-domain multicast routing on the network?

Refer to the exhibits.

All links inside the network are configured at a default cost of one inside the fully converged OSPF domain. Given the configuration from XR1, which interface does traffic from XR1 that is destined to the loopback interface of XR6 select for the exiting interface?

What is the purpose of ACL type prefix set entries in RPL prefix sets?

Refer to the exhibit.

An engineer is troubleshooting an OSPF issue. Router 1 has a neighbor relationship with

router 2. Only router 1 classful EIGRP routes can be seen on router 2. In order for all EIGRP routes to be redistributed correctly, which action should be taken?

What is the role of a segment routing mapping server?

What is the difference between RPL and route map actions?

Refer to the exhibit.

A network operator is working to deploy a Unified BGP design and allow it to be available only in selected markets and services in the future. The label allocation is not functioning as desired. Which action will fix the issue?

Which task is performed when troubleshooting LDP?

Refer to the exhibit.

Which tree does multicast traffic follow?

An engineer is troubleshooting slow performance issues on a customer’s network after the last multicast configuration change was applied on it While checking the running configuration on the router the engineer notices there are many ip igmp join-group commands applied on several interfaces of the router which caused the high CPU utilization usage. What action must the engineer take to solve this issue?

Refer to the exhibit.

Which two commands must the engineer configure for the company's PIM-PIM network to enable Auto-RP mappings to be sent over the FastEthernet0/0 interface without affecting normal operation? (Choose two)

Refer to the exhibit.

After troubleshooting an OSPF adjacency issue, routers 1, 2, and 3 have formed OSPF

neighbor relationships. Which statement about the configuration is true?

Refer to the exhibit.

A network operator must inject a Level 1 route from XR2 (10.16.16.0/24) into the ISIS

topology. Which configuration allows the injection in a way that XR3 and XR1 have a valid and working route for 10.16.16.0/24?

Refer to the exhibit. Company A established BGP sessions with several ISPs. A network engineer at the company must filter out all traffic except for routes that transit AS 152. The engineer configured the filtering policy “permit _152S_(_[0.9])” on R1, but after applying the configuration, the engineer notices that other routes are still visible. Which action resolves the issue?

Drag and drop the features from the left onto the corresponding routing protocols on the right

Refer to the exhibit.

What is the effect of this configuration?

An engineer is troubleshooting a connectivity issue across the MPLS network and is verifying the forwarding behavior of packets. Which table does the engineer look at to verify the forwarding behavior of an IP packet as it enters the MPLS network at the ingress LSR?

Refer to the exhibit.

Router 1 and Router2 have shared routes in the OSPF database but the routes are missing from their routing tables. Checking me prefix-list configuration on both routers, the engineer confirmed all networks are allowed What action should the engineer take to fa the problem?

Which statement about enabling segment routing for IGPs is true?

Refer to the exhibit While troubleshooting a networking issue an engineer identified a suboptimal communication issue on route reflector RR2 In the current environment

• Router A is a non-route-reflector client for RR1 and RR2
• Routers D and E are directly connected iBGP peers.
• Router F is not an iBGP peer of routers D and E

Which action resolves the issue?

Which two BGP route reflector attributes should be implemented to prevent routing loops? (Choose two)

Refer to the exhibit.

Router 1 is connected to router 2 on interface TenGigE0/1. Which interface provides the

alternate path to 172.16.200.9/32 when the link between router 1 and router 2 goes down?

Refer to the exhibit.

Which task must you perform on interface g1/0/0 to complete the SSM implementation?

Refer to the exhibit.

The extension header of the IPv6 header is ignored when which value is equal to zero?

Which expression, when used with the as-path-set command, matches the AS path attribute of the route?

Refer to the exhibit.

CE1 and CE2 cannot communicate through the service provider BGP peering is

established between PE1 and PE2. IS-IS is the only routing protocol running in the service provider core. What

step can be done to troubleshoot the issue?

Refer to the exhibit. Customer A is a small media company with two offices connected by a 512 Kbps line. Their NY office is connected to several external partners by static routes on router R3. VoIP services use VoIP codec G729 Users reported poor voice quality and slow data transfer between the offices A network engineer configured ip tcp header-compression iphc-format on R2 and R3 routers Which additional action must the engineer take to fix the issue?

Compare different features between OSPFv2 and OSPFv3. Drag and drop the descriptions of OSPF from the left onto the correct OSPF versions on the right.

What Is a characteristic of a segment routing mapping server?

What are two differences between OSPF and IS-IS? (Choose two.)

Refer to the exhibit.

Which LSA type is indicated by this router output?

What is used by SR-TE to steer traffic through the network?

Refer to the exhibit. A network engineer is investigating a report of packet drops between the branch site and the central site.

• The two sites are connected via OSPF and RSVP-TE tunnels.
• Traffic from the central site to the branch site is passing normally.
• Technicians at both sites successfully ping the loopback IP addresses on routers R1 and R2.

Which configuration corrects the packet-drop problem?

Refer to the exhibit.

XR1 and XR2 are sending the prefix 10.11.11.0/24 to XR3. A configured policy on XR1 is

incorrectly prepending AS path 11 11 12 12 onto this prefix. A network operator wants to add a policy onto XR3 that will not allow the falsely prepending prefix from being installed. Which policy configuration applied to the XR3 neighbor configuration for XR1 can accomplish this requirement without impact to other or future

received routes?

Refer to the exhibit Router 1 resides in a different data center than Rouler 2 and Router 3. Router 1 is running the IS-IS routing protocol, and it is preconfigured with LDP and segment routing Which configuration must the engineer apply under router isis 111 on Router 1 to implement Tl-LFA on the link to Router 2 without disrupting traffic to Router 3?

A)

B)

C)

D)

Refer to the exhibit. Excessive routes are flooding from network 150.0.0.0 into AS100. Internet traffic between AS400 and AS300 is working normally. No route controlling mechanism is applied on incoming and outgoing traffic Which configuration resolves the issue?

What are two features of dual-stack? (Choose two.)

When deploying a nationwide network of routers, what is the benefit of using BGP confederations?

Refer to the exhibit.

A network operator is troubleshooting TE tunnels and discovers that the soft preemption is not working as desired. Where should the soft preemption be applied to solve the issue?

See the solution below in Explanation.

For which reason can two BGP peers fail to establish a neighbor relationship?

Refer to the exhibit. Routers CE1 and CE2 are in AS 65530. which is multihomed for Internet access. An engineer expects inbound traffic to AS 65530 to arrive from PE1. but it is coming from PE2 instead PE1 and PE2 routers are connected with CE routers through the same bandwidth Which action must be taken to correct the problem?

Refer to the exhibit.

A network engineer implemented this segment routing configuration. Which statement

about the output is true?

Drag and drop the characteristics from the left onto the corresponding routing protocols on the right.