多項選擇題

Which two statements about IS reachability TLV （TLV 2） and the extended IS reachability （TLV 22） are true？（）

A.TLV 22 supports wide metrics.
B.TLV 2 is only used in Level 1 routers.
C.TLV 22 displays the neighbor’s extended areas.
D.Only TLV 22 can support the inclusion of sub-TLVs.
E. Only TLV 22 can be flooded across L1/L2 boundaries.

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單項選擇題

In IS-IS， how long will the restart helper keep the restarting router in the up state？（）

A.The hello dead timer expires.
B.The restart duration timer expires.
C.The restarting router sets the down bit.
D.The restart helper sends out three CSNPs.

單項選擇題

What is the maximum metric value that can be reported in a narrow metric TLV？（）

A.63
B.64
C.1023
D.1024
E.65535

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Which two statements about IS reachability TLV （TLV 2） and the extended IS reachability （TLV 22） are true？（）

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In IS-IS， how long will the restart helper keep the restarting router in the up state？（）

What is the maximum metric value that can be reported in a narrow metric TLV？（）

Which two statements about IS reachability TLV （TLV 2） and the extended IS reachability （TLV 22） are true？（）

In IS-IS， how long will the restart helper keep the restarting router in the up state？（）

What is the maximum metric value that can be reported in a narrow metric TLV？（）