Question 1
As shown in the following figure, R1 and R2 establish a neighbor relationship for Level2, which is critical:
placed as follows, then the following about The route entry for R2 is correct

placed as follows, then the following about The route entry for R2 is correct

Question 2
IS-IS supports the processing and computation of IPv6 routes by adding ATLPs to carry IPv6 addresses and reachability information.
Question 3
Regarding the sliding window of TCP, what are the following descriptions that are enough to be wrong? ( Multiple choice question)
Question 4
Is the following information about BGP4+ described correctly?
Question 5
In RSTP , which port provides a backup path to reach the root node of the spanning tree? What state is the port in?
