What does IPv6 Source Guard utilize to determine if IPv6 source addresses should be forwarded?

• A.ACE
• B.ACLS
• C.DHCP
• D.Binding Table

Correct Answer: D

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Refer to the exhibit.

An administrator is troubleshooting a time synchronization problem for the router time to another Cisco IOS XE-based device that has recently undergone hardening. Which action resolves the issue?

• A.Allow NTP in the ingress ACL on 10.1.225.40 by permitting UDP destined to port 123.
• B.NTP service is disabled and must be enabled on 10.1.225.40.
• C.Ensure that he CPE router has a valid route to 10.1.255. 40 for NTP and rectify if not reachable.
• D.Allow NTP in the ingress ACL on 10.1.255.40 by permitting TCP destined to port 123.

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Refer to the exhibit.

BGP and EIGRP are mutually redistributed on R3, and EIGRP and OSPF are mutually redistributed on R1.
Users report packet loss and interruption of service to applications hosted on the 10.1.1.0724 prefix. An engineer tested the link from R3 to R4 with no packet loss present but has noticed frequent routing changes on R3 when running the debug ip route command. Which action stabilizes the service?

• A.Tag the 10.1.1.0/24 prefix and deny the prefix from being redistributed into OSPF on R1.
• B.Repeat the test from R4 using ICMP ping on the local 10.1.1.0/24 prefix, and fix any Layer 2 errors on the host or switch side of the subnet.
• C.Place an OSPF distribute-list outbound on R3 to block the 10.1.10/24 prefix from being advertised back to R3.
• D.Reduce frequent OSPF SPF calculations on R3 that cause a high CPU and packet loss on traffic traversing R3.

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Drag and drop the actions from the left into the correct order on the right to configure a policy to avoid following packet forwarding based on the normal routing path.

Correct Answer:

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How are MPLS Layer 3 VPN services deployed?

• A.The RD and RT values must match under the VRR
• B.The RD and RT values under a VRF must match on the remote PE router
• C.The import and export RT values under a VRF must always be the same.
• D.The label switch path must be available between the local and remote PE routers.

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