What is the format of the router ID on an OSPF-enabled router?

ITExamAnswers Editorial Team Last Updated: Mar 23, 2020

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What is the format of the router ID on an OSPF-enabled router?

a unique router host name that is configured on the router
a unique phrase with no more than 16 characters
a 32-bit number formatted like an IPv4 address
an 8-bit number with a decimal value between 0 and 255
a character string with no space

Explanation: A router ID is a 32-bit number formatted like an IPv4 address and assigned in order to uniquely identify a router among OSPF peers.

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