Company XYZ is running BGP as their routing protocol. An external design consultant recommends that TCP path MTU discovery be enabled. Which effect will this have on the network?
A. It will increase the convergence time
B. It will improve the convergence time
C. It will create a loop free path
D. It will enhance the performance of TCP-based applications
Exam engine says answer is B. Why is not D? and/or why is B?
Because in this case the path MTU is discovered between the BGP neighbors so that the route update messages are not required to be fragmented, which will improve the convergence time as the BGP router is not required to reassemble the route update message.