Free 300-510 Practice Test Questions 2026

A network engineer recently deployed a wireless network for users at a new office to join video conferences wirelessly The existing network consists of routers that are configured for EIGRP and BGP. which are located at several data centers in different physical locations The engineer configured PIM-SSM within a single domain from a single source However, during the testing phase, the video conference failed to work for any of the users. The IPs are reachable and firewalls in the network are configured correctly to allow the traffic. Which action resolves the issue?

A. Configure PIM dense mode to replace P1M-SSM.

B. Configure PIM dense mode with multidomain multicast

C. Configure the devices to send join messages toward a multicast SPT

D. Configure PIM sparse mode to replace PIM-SSM.

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.

Refer to the exhibit.

IS-IS is the routing protocol on the network. After the team noticed excessive CPU usage on all routers, particularly routers R2 and R6, they configured route summarization on all routers. However, a network engineer noticed that summary routes and more specific routes are present in the routing table on R1. Which action must the team take so that R1 receives only the summary routes?

A. Configure R2 and R4 to perform summarization for Level 1 routers.

B. Configure R3 to perform summarization for Level 1 routers, and configure R6 to perform summarization for Level 2 routers.

C. Configure R3 and R5 to perform summarization for Level 1 and Level 2 routers.

D. Configure R6 only to perform summarization for all routers.

What is the difference between RPL and route map actions?

A. RPL uses match, pass, set, and drop actions, and route maps use match, set. and drop actions.

B. RPL uses pass. set. and drop actions only, and route maps use match, set, and drop actions.

C. RPL uses pass, set. drop, and done actions, and route maps use match and set actions only.

D. RPL uses match, set, drop, and stop actions, and route maps use match, set, and drop actions.

Refer to the exhibit.

An engineer applied the summarization configuration on R1 for four networks (192.168.20.0/24 to 192.168.23.0/24) in area 1 and eight networks (192.168.32.0/24 to 192.168.39.0/24) in area 2 to stop the flooding of all the customer routes. While checking the routing table of R2, the engineer noticed that R1 is still sending only specific routes to R2. Which configuration should the engineer apply on R1 to summarize routes?

A. Option A

B. Option B

C. Option C

D. Option D

Refer to the exhibit.

Routers R1 and R2 cannot form a neighbor relationship, but the network is otherwise configured correctly and operating normally. Which two statements describe the problem?
(Choose two.)

A. The two routers are in the same area

B. The two routers are in different subnets

C. The two routers have password mismatch issues

D. The two routers have the same network ID

E. The two routers are in different areas

Which command is used to enable BIDIR-PIM under global configuration mode for Cisco IOS XE Sofware?

A. ip pim bidir-enable

B. ipv4 pim bidir-enable

C. ip multicast-routing

D. ip pim bidir

Refer to the exhibit.

An engineer is troubleshooting an issue with this network and notices that prefixes from R3 are missing on the R1 routing table Due to repeated ASN when the 10 0 0 0'8 prefix from R3 arrives at R1, BGP automatically rejects it There is no prefix-list on R1 which blocks the traffic from R3 What should the engineer do to fix the problem so that BGP allows that prefix on R1?

A. Configure R2 as a route reflector client of R1.

B. Configure the allowas-in command on R1.

C. Configure the next-hop-self command on R2.

D. Configure identical confederation ASNs on R1 and R2.

Refer to the exhibit.

An administrator is troubleshooting Internet access issues on a customer’s network. After applying this ISIS configuration to R1, the administrator notices that it fails to redistribute the default route into IS-IS. After checking the connectivity between the ISIS router and the ISP router the engineer confirmed there is Layer 3 connectivity between them Which action should be taken to correct the problem?

A. Associate the default route with a VRF

B. Add the default-information originate command to the configuration

C. Configure the default route under any routing protocol other than IS-IS

D. Configure R1 as a Layer 1 router

Refer to the exhibit.

Routers R1 and R2 reside in AS 65530, which is multihomed to the Internet. A network engineer expects devices in the AS to use R2 to access the Internet, but they are using R1 as the exit point from the AS. Which action corrects the problem?

A. Add a sequence number to the route map to remove the implicit deny.

B. Change the route map direction in the neighbor statement to out

C. Configure the route map with a local preference of 200 or higher.

D. Remove the neighbor statements from the address family configuration and activate the neighbor globally on R1.

What is the characteristic of enabling segment routing for IGPs?

A. Segment routing must first be enabled under the routing process and then globally.

B. Segment routing must first be enabled globally and then under the routing process.

C. Segment routing must be enabled only globally.

D. Segment routing must be enabled only under the routing process.