单项选择题

Which packet type is used to ackno wledge LSPs on point - to - point links and to request missing pieces of information in the IS - IS link -state database?（）

A. complete SNP (CSNP)
B. partial SNP (PSNP)
C. hello
D. database query
E. database description packet (DDP)

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单项选择题

What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS - IS link - state databases are synchronized?（）

A. complete SNP (CSNP)
B. partial SNP (PSNP)
C. database query
D. database description packet (DDP)
E. link - state summary
F. hello

单项选择题

What are the basic configuration steps to enable IS - IS?（）

A. Configure the net system - id command under routerisis and enable IS - IS on each interface with the ip router isis command.
B. Configure the net sy stem - id and the network net - id commands under routerisis.
C. Configure the network net - id command(s) under routerisis and enable IS - IS on each interface with the ip router isis command.
D. Configure the network net - id command(s) and the is - type level -1- 2 command under routerisis.
E. Configure the net system - id and the network net - id commands under routerisis and enable ISIS on each interface with the ip router isis command.

单项选择题

In reference to the P1R3 show isis route output, which statement is true? （）

A. P1R1 is the exi t point out of the area for P1R3.
B. P1R1 is a level - 1 only IS - IS router.
C. P1R1 has been configured with a nondefault IS - IS metric.
D. P1R3 is a level - 2 only IS - IS router.
E. P1R3has been configured with a nondefault IS - IS metric.
F. P1R3 routing ta ble should contain i L2 entries.