Which of the following protocols has a default administrative distance value of 90?

Which of the following protocols has a default administrative distance value of 90?
A . RIP
B . EIGRP
C . OSPF
D . BGP

View Answer

Answer: B

Explanation:

EIGRP (Enhanced Interior Gateway Routing Protocol) has a default administrative distance (AD) value of 90 for internal routes. The administrative distance is used to rate the trustworthiness of routing information received from different routing protocols. EIGRP, developed by Cisco, has an AD of 90, which is lower than that of RIP (120) and OSPF (110), making it more preferred if multiple protocols provide a route to the same destination.

Reference: CompTIA Network+ study materials.