What is the default administrative distance of OSPF?

The correct answer is C. 110. The default Administrative Distance (AD) of OSPF is 110 (C). AD is a measure of trustworthiness of a routing protocol - lower is more trusted. Key defaults to memorize: Connected = 0, Static = 1, EIGRP internal = 90, IGRP = 100, OSPF = 110, IS-IS = 115, RIP = 120, External…

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Question

What is the default administrative distance of OSPF?

Options

A90
B100
C110
D120

How the community answered

(22 responses)

A
5% (1)
C
91% (20)
D
5% (1)

Explanation

The default Administrative Distance (AD) of OSPF is 110 (C). AD is a measure of trustworthiness of a routing protocol - lower is more trusted. Key defaults to memorize: Connected = 0, Static = 1, EIGRP internal = 90, IGRP = 100, OSPF = 110, IS-IS = 115, RIP = 120, External EIGRP = 170, Unknown/Unreachable = 255. AD 90 (A) belongs to EIGRP internal routes; AD 100 (B) belongs to IGRP; AD 120 (D) belongs to RIP.

Topics

#administrative distance#OSPF#routing protocol defaults

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