cisco 300-510 practice test

Question 1

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?

• A. Change HMAC-MD5 to HMAC-SHA1-20
• B. Configure the send and accept lifetime under key 1
• C. Change HMAC-MD5 to MD5
• D. Change HMAC-MD5 to HMAC-SHA1-12

Answer:

B

Question 2

Which difference should be considered when intradomain or interdomain multicast routing is implemented?

• A. Interdomain multicast routing relies on PIM-DM, and intradomain multicast routing relies on PIM-SM
• B. Interdomain multicast routing uses BIDR-PIM to establish neighbor relationships between AS, and intradomain multicast routing uses MSDP
• C. A network uses intradomain multicast routing without interdomain routing, but networks that use interdomain multicast routing must also apply intradomain routing
• D. Interdomain multicast routing requires an IS-IS or OSPF neighbor relationship between the domains, but intradomain multicast routing requires only BGP

Answer:

C

Question 3

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

Answer:

B E

Question 4

Refer to the exhibit. Routers RA and RB are IS-IS peers configured for NSF, but router RC is an IS-IS peer without NSF
capability. If RA undergoes processor switchover, what is the effect on the network environment?

• A. If RC is operating without the Cisco configuration option, only 2 routers tear down their peering relationships and re- establish peering
• B. All peer relationships remain up, but the link-state database is rebuild on each device
• C. If RC is operating without the Cisco configuration option, all three routers tear down their peering relationships and re- establish peering
• D. All peer relationships remain up and the link-state database is unchanged

Answer:

B

Question 5

An engineer is troubleshooting slow performance issues on a customers 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?

• A. Configure all router interfaces to be process-switched by increasing the query interval
• B. Remove ip igmp join-group command on all unnecessary interfaces
• C. Remove unnecessary members from the IGMP group
• D. Configure ip igmp static-group command on all interfaces

Answer:

B

Question 6

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

• A. Their BGP send-community strings are misconfigured
• B. Their BGP timers are mismatched
• C. Their remote-as numbers are misconfigured
• D. They are both activated under an IPv4 address family

Answer:

C

Question 7

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?

• A. The same interface cannot be advertised in two different IS-IS instances
• B. The IS-IS “ISP” and “ISP2” instances are unrelated and unable to intercommunicate
• C. The configured IS-IS NSEL value is not allowing the routing systems to establish a neighborship
• D. The interface mode ip router is-is command was not included in the script

Answer:

A

Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_isis/configuration/xe-3s/irs-xe-3s-book/irs-instance-
vrf.html

Question 8

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?

• A. TenGigE0/1 interface provides the alternate path
• B. A backup path must be statically installed
• C. TenGigE0/2 interface provides the alternate path
• D. A primary path must be manually installed

Answer:

C

Question 9

Refer to the exhibit. A network operator must stop 10.33.33.33/32 from being redistributed into Level 1 router XR1. Which
configuration meets this need?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer:

C

Question 10

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

• A. Length
• B. dfa-regex
• C. ios-regex
• D. neighbor-is

Answer:

C