Apr-2026 FREE Cisco 300-510 PRACTICE QUESTIONS AND ANSWERS UPDATES [Q174-Q197]

Q174. 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

Q175. Refer to the exhibit.

Refer to the exhibit An engineer is troubleshooting a networking issue with several symptoms The shortest path from router R1 to R8 is underused and the longest path is overused Traffic from 10.1.1 1 to 10 8 8 8 is routed on the longest path Traffic between the R1 and the application server is experiencing packet drops and latency problems.
Which action resolves the issue?

Configure route leaking for the IP address Of the application server on router RI.

Increase the RI to R2 link metric to 20.

Configure a Level 2 IS-IS domain on router RI.

Block the advertisement of the application server IP address to router R6.

Q176. What is the role of segment routing mapping server?

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

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

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

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

Q177. 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?

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

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

Redistribute Level 2 prefixes into Level 1 on router 2.

Disable advertisement of the default route on router 2.

Q178. Refer to the exhibit. Which attribute can router 1 alter so that only other iBGP peers prefer to use
192.168.4.2 as the next hop for route 192.168.3.0/24?

MED

local preference

origin

weight

Q179. Refer to the exhibit.

Refer to the exhibit. A network engineer commissioned Router 1, which connects lo Router 2 and Router 5 Router 1 participates in IS-IS routing with other routers, but it is not used for transit traffic. Traffic from Router 2 to Router 5 is expected to travel via Router 1 but the traffic is travelog via Router 3 and Router 4 Which action reserves this problem?

Add hello padding on Router 1

Remove the hello padding on Router 5

Add the overload bit on Router 5

Remove the overload bit on Router 1.

Q180. Refer to the exhibit.

When implementing SRv6, which SID does R2 propagate into area 0 for the prefix 2001:DB8:1:1/128?

120

230

110

10

Q181. Which two characteristics unique to SSM when compared to ASM are true? (Choose two.)

It uses SPT switchover

It uses (*,G) exclusively

It uses IGMPv3

It uses RP

It uses (S,G) exclusively

Q182. Refer to the exhibit.

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?

Configure the ip ospf I area O command under Serial 1/1 interfaces on R2 and R3 to avoid routing loops

Change the OSPF router ID on either router so that the router IDs are unique.

Configure the summary-address 10.10.0.0 255.255.240.0 command on R3 to optimize OSPF communication

Configure the BGP routing protocol between R2 and R3 to control route propagation.

Q183. Refer to the exhibit. All routers on this network have been configured with PIM-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?

Place the routes affected by asymmetric routing in a VRF.

Remove the asymmetric routing and use spanning tree to manage link usage.

Add a static Mroute for routes that are failing.

Configure the routers to use PIM-DM instead of PIM-SM.

Q184. What is a restriction of 6PE?

It is implemented only over eBGP peers.

It is implemented only over iBGP peers.

It adds a value of ::FFFf:: on the IPv4 next hop address.

It cannot be implemented on VRFs.

Q185. A network engineer is troubleshooting OSPF multiare A. Which Cisco IOS XR feature should the engineer use in order to streamline OSPF issue?

hierarchical CLI

DR support for topology management

routing process enabled by default on all interfaces

show ip ospf topology command

Q186. Refer to the exhibit.

What is the relationship between Router 1 and Router 2?

Router 1 centrally learns the topology of the network to aid in SR-TE path selection, and Router 2 is a node that feeds Router 1 topology information.

Router 1 and Router 2 are participating in SR-TE tunnels and are both head-end routers.

Router 1 and Router 2 centrally learn the topology of the network to aid in SR-TE path selection for peers.

Router 2 is the head-end router in an SR-TE tunnel, and it is learning topology of the network from the PCE enabled on Router 1.

Q187.

Refer to the exhibit. Which statement about this configuration is true?

Router 1 sends and receives multiple best paths from neighbor 192.168.1.1

Router 1 sends up to two paths to neighbor 192.168.1.1 for all routes

Router 1 receives up to two paths from neighbor 192.168.1.1 for all routes in the same AS

Router 1 receives only the best path from neighbor 192.168.1.1

Q188. Refer to the exhibit. The network is situated at different locations on the customer site. The customer runs a mission-critical application behind CE2, which is connected over a 10 GB link to the local network of the customer. After recent configuration changes to the P and PE routers, an LSP failure has occurred, causing connectivity issues. CE1 is unable to reach the CE2 internal IP address.
Which action resolves this issue?

Configure the ip ospf network point-to-point command on PE2.

Change the subnet mask on the PE2 loopback interface from /24 to /32.

Configure the ip ospf network point-to-multipoint command on PE2.

Implement BGP in the core and configure an MPLS TE tunnel between PE1 and PE2.

Q189. A network engineer is troubleshooting OSPF multiarea.
Which Cisco IOS XR feature should the engineer use in order to streamline OSPF issue?

hierarchical CLI

routing process enabled by default on all interfaces

DR support for topology management

show lp ospf topology command

Q190. What is the difference between a source tree and a shared tree in a multicast environment?

To route traffic from source to receiver a source tree uses a link-state routing protocol and a shared tree uses a distance-vector routing protocol.

A source tree has its root at the source, and a shared tree has its root at a designated rendezvous point.

To stream multicast from source to receiver, a source tree uses PIM-SM and a shared tree uses PIM-DM.

Source trees are the default type for bidirectional PIM, and PIM-DM uses shared trees by default.

Q191. Refer to the exhibit.

Which tree does multicast traffic follow?

shared tree

MDT default

source tree

MDT voice

Q192. Refer to the exhibit.

Refer to the exhibit There is a BGP traffic path issue between Customer-1 and Customer-2 Users from Customer-2 have reported file transfer issues High utilization on the path between both customers causes many packet drops. Which configuration resolves the issue?

Option A

Option B

Option C

Option D

Q193. Drag and Drop Question
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.)

Q194. 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

Q195.

Refer to the exhibit. Which attribute can router 1 alter so that only other iBGP peers prefer to use 192.168.4.2 as the next hop for route 192.168.3.0/24?

MED

local preference

origin

weight

Q196. Refer to the exhibit.

The network is situated at different locations on the customer site. The customer runs a mission-critical application behind CE2. which is connected over a 10 link to the local network of the customer After recent configuration changes to the P and PE routers, an LSP failure has occurred, causing connectivity issues. CE1 is unable to which the CE2 internal IP address Which action resolves this issue?