Question

question 26
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 character string with no space
an 8 - bit number with a decimal value between 0 and 255
a 32 - bit number formatted like an ipv4 address
a unique phrase with no more than 16 characters

Explanation:

OSPF (Open Shortest Path First) is a routing protocol. The Router ID (RID) in OSPF is a 32 - bit number. It is typically formatted like an IPv4 address (in dotted - decimal notation). This is used to uniquely identify a router within an OSPF domain. A unique router host name (option 1) is not the format of the RID. A character string with no space (option 2) is not relevant for the RID format. An 8 - bit number (option 3) is too short as the RID is 32 - bit. A unique phrase (option 5) is also not the correct format.

Answer:

a 32 - bit number formatted like an IPv4 address