medium
Single Answer
0What is a characteristic of distance-vector protocols?
Answer Options
A
They track the status of routes learned.
B
They re-advertise routes learned.
C
Each router keeps its own topology database.
D
Each router checks the routes it learns.
Correct Answer: B
Explanation
Protocols such as RIP re-advertise routes learned. This can be problematic since it is the equivalent of gossiping about what they have heard. Routes learned through this method are never tracked for status or double-checked for validity. Distance-vector protocols do not keep a topology database; they just feed routes to the route table. Distance-vector protocols never check the routes they learn because of the method of routing through rumor.
distance-vector
rip
routing-by-rumor
link-state