Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 14

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?

Answer options

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

Correct answer: A

Explanation

The authoritative flag indicates that the NHRP mapping information was directly obtained from the next-hop server, ensuring its reliability. Options B and C do not accurately describe the significance of the authoritative flag, while D refers to the process of creating the mapping entry rather than its status, and E incorrectly implies that the entry cannot be changed.