What is an advantage of using BFD?

• A.It detects local link failure at layer 2 and updates routing protocols.
• B.It has sub-second failure detection for layer 1 and layer 2 problems.
• C.It detects local link failure at layer 1 and updates routing table.
• D.It has sub-second failure detection for layer 1 and layer 3 problems.

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Which protocol does MPLS use to support traffic engineering?

• A.Tag Distribution Protocol
• B.Resource Reservation Protocol
• C.Border Gateway Protocol
• D.Label Distribution Protocol

Correct Answer: B

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How does an MPLS Layer 3 VPN function?

• A.multiple customer sites interconnect through service provider network to create secure tunnels between customer edge devices
• B.set of sites use multiprotocol BGP at the customer site for aggregation
• C.set of sites interconnect privately over the Internet for security
• D.multiple customer sites interconnect through a service provider network using customer edge to provider edge connectivity

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Refer to the exhibit.

The network administrator configured the Chicago router to mutually redistribute the LA and NewYork routes with OSPF routes to be summarized as a single route in EIGRP using the longest summary mask:

After the configuration, the New York router receives all the specific LA routes but the summary route. Which set of configurations resolves the issue on the Chicago router?

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

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Refer to the following output:
Router#show ip nhrp detail
10.1.1.2/8 via 10.2.1.2, Tunnel1 created 00:00:12, expire 01:59:47
TypE. dynamic, Flags: authoritative unique nat registered used
NBMA address: 10.12.1.2
What does the authoritative flag mean in regards to the NHRP information?

• A.The mapping entry was created in response to an NHRP registration request.
• B.Data packets are process switches for this mapping entry.
• C.It was obtained directly from the next-hop server.
• D.The NHRP mapping entry cannot be overwritten.
• E.NHRP mapping is for networks that are local to this router.

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