Latest Dec-2025 Cisco 300-510 Dumps Updated 291 Questions [Q111-Q133]

300-510 Cisco

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December 30, 2025

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Latest Dec-2025 Cisco 300-510 Dumps Updated 291 Questions

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NO.111 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 action fixes the issue?

Change HMAC-MD5 to HMAC-SHA1-20

Configure the send and accept lifetime under key 1

Change HMAC-MD5 to MD5

Change HMAC-MD5 to HMAC-SHA1-12

NO.112 Refer to the exhibit

Router R1 is configured to advertise outgoing SA messages to routers R2 and R3, but to receive incoming SA messages only from R2. Which additional configuration must an engineer apply to router R1 so it filters all MSDP SA messages from Domain-C?

R1# ip msdp sa-filter in 192.168.3.1

R3# ip msdp sa-filter out 192.168.3.1

R3# ip msdp password peer 192.168.1.1

R1# ip msdp password peer 192.168.3.1

NO.113 Refer to the exhibit.

Which effect of this configuration is true?

It sets the keepalive timer to 30 seconds and the hold timer to 240 seconds.

It sets the keepalive timer to 30 milliseconds and the hold timer to 240 milliseconds

It sets the hold timer to 30 milliseconds and the keepalive timer to 240 milliseconds

It sets the hold timer to 30 seconds and the keepalive timer to 240 seconds

NO.114

Refer to the exhibit. Network connectivity between bank A and bank B has been lost Users at bank A and bank B are able to successfully reach their directly connected PE routers. All routers in OSPF area 0 are correctly advertising and learning routing updates. Which action resolves the issue?

Enable next-hop-self under the iBGP peering configuration on routers PEI and PE2

Configure the P routers to redtstnbute BGP routes within OSPF area 0.

Configure router PI to advertise the IP prefix of PEI.

Configure MPLS with an end-to-end label-switched path on each router.

NO.115 Drag and drop the route-manipulation methods from the left onto their features on the right

NO.116 Refer to the exhibit.

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?

Disable split horizon on router R2.

Redistribute CE1 routes on router R2.

Enable passive interface on the router R3 Loopback1 interface.

Enable route dampening on routers R1 and R2

NO.117 Refer to the exhibit. After creating dynamic neighbors for the range specified, the network administrator with an employee ID: 4690:88:374 cannot see all the BGP neighbors established. What is the issue?

The single activated neighbor cannot be within the listen range.

A list of neighbors belongs only to a defined ASN.

The peer groups must also be activated inside the address family.

The listen limit is smaller than the prefix defined in the listen range.

NO.118 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?

Remove the allocate-labels command.

Reconfigure the route-policy ALL_LABELS to match all after the drop.

Reconfigure the route-policy ALL_LABELS to pass.

Remove the route policy and only configure “allocate-label”.

NO.119 Drag and drop the BGP attributes from the left into the order of route selection preference on the right.

NO.120 After changing the IP address on an IOS XR router, an engineer cannot ping the new address Which step did the engineer forget to complete?

commit the configuration

roll back the configuration

save the running configuration

merge the configuration

NO.121 In a PIM-SM environment, which mechanism determines the traffic that a receiver receives?

The receiver explicitly requests its desired traffic from the RP on the shared tree.

The receiver explicitly requests traffic from a single source, which responds by forwarding all traffic.

The RP on the shared tree floods traffic out of all PIM configured interfaces.

The receiver explicitly requests traffic from each desired source, which responds by sending all traffic.

A shared tree is built first between receiver and the RP. The receiver is then able to switch to a Source tree as needed.

NO.122 Refer to the exhibit. The service provider provides IPv6 connectivity to large enterprise customers with offices spanning several geographic regions SRv6 is running in the service provider core.
The service provider just signed a contract with a new customer that is still running IPv4. The new customer needs connectivity between its two sites connected via CE1 and CE2 and the internet.
Which action must the service provider s network-engineering team take to provide connectivity across the SRv6 data plane?

Encapsulate IPv4 traffic from the CEs on their respective PEs through a TE path between PE1 and PE2.

Translate the IPv4 addresses to an IPv6 address on each CE

Redistribute the IPv4 routes from CE2 and CE1 on their respective PEs

Implement an NTP master and sync the timers on the P and PE routers

NO.123 Refer to the exhibit

Router R1 is configured to advertise outgoing SA messages to routers R2 and R3, but to receive incoming SA messages only from R2. Which additional configuration must an engineer apply to router R1 so it filters all MSDP SA messages from Domain-C?

R1# ip msdp sa-filter in 192.168.3.1

R3# ip msdp sa-filter out 192.168.3.1

R3# ip msdp password peer 192.168.1.1

R1# ip msdp password peer 192.168.3.1

NO.124 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?

Configure the two routers with different process IDs

Configure the two routers with different hello and dead timer values

Switch the DR and BDR roles between the two routers

Configure interface Senal1/0 on Router1 as a point-to-point interface

NO.125 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:

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

NO.126 Refer to the exhibit.

An engineer applied the configuration on R1 to prevent network 192.168.1.0/24 from being propagated outside of area 5. After the change, users have reported they are not able to access any of the application servers that were working before. While checking the routing table of the peer router. The engineer notices R1 stopped propagating any routes outside are 5. Which action must be taken to fix the problem?

Configure an additional filter-list on R1 for inbound traffic to allow external router into area 5.

Reconfigure the filter-list statement to apply in the inbound direction

Change the prefix-list action to permit and add an explicit deny statement for network 192.168.1.0/24

Add a permit statement for 0.0.0.0/0 le 32 to the end of the prefix-list 10 override the implicit deny.

NO.127 Refer to the exhibit. R1 is directly connected to R2 and R3. R1 is in BGP AS 123, R2 is in BGP AS 2, and R3 is in BGP AS 3.
Assume that there is no connectivity issue between R1, R2 and R1, R3.
Which result between BGP peers R1, R2 and R1, R3 is true?

The BGP session does not come up between R1 and R2 and between R1 and R3.

The BGP session comes up between R1 and R2 and between R1 and R3.

The BGP session comes up between R1 and R3, but not between R1 and R2.

The BGP session comes up between R1 and R2, but not between R1 and R3.

NO.128 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?

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

Configure router CE1 to prepend the AS path to routes it receives from PE1.

Set the local-preference value on router CE1 to 100 or greater

On router PE1, change the origin for routes that are redistributed from CE1 to CE2.

NO.129 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?

TenGigE0/1 interface provides the alternate path

A backup path must be statically installed

TenGigE0/2 interface provides the alternate path

A primary path must be manually installed

NO.130 Which two statements about route reflectors are true? (Choose two.)

Routes received from nonclient peers are reflected to route reflector clients as well as nonclient peers.

Routes received from nonclient peers are reflected to route reflector cluster as well as OSPF peers.

If a router received an iBGP route with the originator-ID attribute set to its own router ID, the route is discarded.

Routes received from a route reflector client is reflected to other clients and nonclient peers.

If a route reflector receives a route with a cluster-list attribute containing a different cluster ID, the route is discarded.

Reference:
http://www.networkers-online.com/blog/2009/02/bgp-route-reflector-basics/

NO.131 Refer to the exhibit.

How are packets directed through the data plane when SRv6 is implemented?

An ordered list of segments is encoded in a routing extension header

The MPLS data plane is used to push labels onto IGP routes

A stack of labels represents an ordered list of segments

The packet is encapsulated with a header and trailer encoding the ordered list of segments

Reference:
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/BRKIPM-2249.pdf

NO.132 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?

Interface GigabitElhemet 0/0. The tie breaker of the node index priority is lower and trumps the path cost.

Interface GigabitEthernet 0/1. The tie breaker of the path cost being lower. The node index priority does not impact this selection process.

Interface GigabitEthernet 0/1. The tie breaker of the node index priority is lower and trumps the path cost.

Interface GigabitEthernet 0/0. The tier breaker of the path cost being lower. The node index priority does not impact this selection process.

NO.133 Refer to the exhibit.

Routers R1, R2. R3, and R4 have been configured to run OSPF. and router R5 is running EIGRP Traffic from R1 to R5 is expected to pass via R4. but OSPF routing has calculated the best path via R3. Which action corrects the problem?