Free Cisco 300-510 Practice Questions 2026 | 300-510

What is the role of a segment routing mapping server?

A. It advertises a local SID mapping policy to all of the mapping clients

B. It works with IGP instances to calculate the prefix-SIDs in the absence of a mapping policy

C. It selects multiple mapping entries to create overlapping active mapping policies

D. It reads and translates remotely received SIDs from other mapping servers to create SID mapping entries

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?

A. Option A

B. Option B

C. Option C

D. Option D

Refer to the exhibit

A network engineer installed a new router (router 3) at the regional hub running MPLS services for scalability Router 3 is connected to the 10.44 4.0,'24. 10.44 5.024. 10 44.6.0/24. and 10 44 7 0/24 subnets The new router has been configured for OSPF area 2. and it is advertising the four connected networks. The engineer noticed that the same networks are listed as interarea summary routes, and they are being flooded into each area on the area borders Which action resolves the issue?

A. On router 3, configure an access list to filter the networks.

B. On router 2, configure a route map to filter the networks.

C. Under the OSPF configuration on router 3. add area 2 range 10.44.4.0 255.255.252.0.

D. Under the OSPF configuration on router 2, add area 2 range 10.44.4.0 255.255.252.0.

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

Refer to the exhibit.

An engineer at a large ISP is troubleshooting suboptimal routing on a customer's IS-IS network with multiple Level 1-2 routers. The network consists of numerous routers that are configured for MPLS. When IS-IS picks the closest Level 1-2 router to exit the area, suboptimal routing occurs in Area 8 and Area 10. The other IGP protocols are running correctly, and the IS-IS adjacency between routers is established. Which action resolves the issue?

A. Configure each interface as either Level 1 or Level 2 circuit type on router 1.

B. Configure the router as DIS for each of the interfaces on router 1.

C. Redistribute Level 2 prefixes into Level 1 on router 2.

D. Disable advertisement of the default route on router 2.

Refer to the exhibit.

Users connected to an application on 1.1.1.1 via routers CE1 and CE2 are complaining of frequent disconnections. While troubleshooting the issue, a network engineer with an employee ID: 4333:96:916 determined that the application itself is working normally, but the link connected to the 1.1.1.1 application is flapping. The users on CE1 and CE2 are accessing applications on 2.2.2.2 without difficulty. Which action resolves the issue?

A. Disable split horizon on router R2.

B. Redistribute CE1 routes on router R2.

C. Enable passive interface on the router R3 Loopback1 interface.

D. Enable route dampening on routers R1 and R2

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?

A. Make a soft reset to the peer.

B. Set up a minimum hold-down timer higher.

C. Set up a hello timer higher.

D. Set up a hold-down timer higher.

Which two routing protocols have extensions capable of running SRv6? (Choose two.)

A. OSPF

B. BGP

C. RIP

D. IGRP

E. EIGRP

An engineer is troubleshooting end-to-end customer traffic across an MPLS VPN service provider network. Which tasks should the engineer use to solve the routing issues? Drag and drop the table types from the left onto the most useful troubleshooting tasks/router types on the right. (Not all options are used.)

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?

A. On router CE2, configure inbound routes from PE2 to CE2 with a local-preference value of 50 or greater.

B. Configure router CEI to prepend the AS path to routes it receives from PE 1.

C. Set the local-preference value on router CEI to 100 or greater

D. On router PEI , change the origin for routes that are redistributed from CEI to CE2.