单项选择题

A. until the hello dead timer expiresB. until the resta……

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

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

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热门试题

单项选择题A router receives an IPv6 packet which is 2000 bytes in length. The MTU of the outgoing interface is 1500 bytes. Which action will the router take?（）

A. Forward the packet.
B. Fragment the packet.
C. Drop the packet silently.
D. Drop the packet and send an ICMPv6 message.

多项选择题Which two MBGP IPv4 sub-AFIs does the JUNOS software support?（）

A.unicast
B.anycast
C.multicast
D.broadcast

单项选择题Which routers must be configured with the same authentication string when configuring OSPFauthentication?（）

A. all routers on a link
B. all routers in an area
C. all external OSPF peers
D. all routers in an OSPF domain

单项选择题What is true regarding the OSPF Type 2 LSA?（）

A. The DR floods this to describe the local stub network segment.
B. The ABR floods this to describe the local stub network segment.
C. The DR floods this to describe the local transit network segment.
D. Each OSPF router floods this to describe its interfaces and metrics.
E. The DR and BDR flood this to describe the local transit network segment.

多项选择题Which two multicast groups support Auto-RP mapping and discovery?（）

A.224.0.0.39
B.224.0.1.39
C.224.0.0.40
D.224.0.1.40