Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 83

What following parameters for the EIGRP authentication need to match in order for EIGRP neighbors to establish a neighbor relationship?

Answer options

• A. Autonomous System number.
• B. K-Values
• C. If authentication is used both: the key number, the password, and the date/time.
• D. The neighbors must be on common subnet (all IGPs follow this rule).

Correct answer: C

Explanation

The correct answer is C, as all specified parameters must match for EIGRP neighbors to authenticate correctly when authentication is enabled. Options A, B, and D are important for EIGRP operation but do not pertain specifically to authentication requirements.