Free Cisco 300-510 Exam Dumps Questions & Answers

Which feature is used in multicast routing to prevent loops?

• A.split horizon
• B.RPF
• C.STP
• D.inverse ARP

Refer to the exhibit. The UserA device fails to recede IPTV streaming traffic from the source.
While debugging the issue a network engineer finds that routers RB and RC receive the multicast traffic normally RC receives subscription messages from UserA to join the IPTV stream.
Which action must the engineer lake on router RA to correct this problem?

• A.Configure ip pim ssm with ip igmp version 2 on interface GigabitEthernet 1/0.
• B.Change ip igmp version 2 to ip igmp version 3 on interface GigabitEthernet 1/0.
• C.Remove the ip pim ssm default configuration and replace it with ip pim rp-address 10.10.1.3.
• D.Configure ip pim bidir-enable in global mode and add ip pim rp-address 10.10.10.3.

Refer to the exhibit. A network engineer must correct the security policy on the EDGE_R router, which is connected to two Tier 1 ISPs. After another engineer added ip as-path access-list 11 permit 11 to EDGE_R, some routes from AS 11 and AS 4832 started to appear in the routing information base (RIB). Traffic control via Community options is disabled on both ISPs.
How should the network engineer update the router configuration on EDGE_R so that only routes for AS 11 are permitted?

• A.Configure ip as-path access-list 11 permit_11_.
• B.Configure ip as-path access-list 11 deny_4832$.
• C.Configure ip as-path distribution-list 11 deny *[0-9]+$.
• D.Configure ip as-path prefix-list 11 permit_11$.

An engineer is troubleshooting slow performance issues on a customer's 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.Remove unnecessary members from the IGMP group
• B.Remove ip igmp join-group command on all unnecessary interfaces
• C.Configure all router interfaces to be process-switched by increasing the query interval
• D.Configure ip igmp static-group command on all interfaces

What is the purpose of the confederation identifier in a BGP confederation?

• A.It advertises routes outside of the confederation's autonomous system.
• B.It reflects the route reflector cluster ID within the confederation.
• C.It carries the AS number within the confederation's local autonomous system.
• D.It identifies the autonomous system that belongs to the confederation.