多項選擇題What information does a router running a link-state protocol use to build and maintain its topological database? （）

A.hello packets
B.SAP messages sent by other routers
C.LSAs from other routers
D.beacons received on point-to-point links
E.routing tables received from other link-state routers
F.TTL packets from designated routers


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1.單項選擇題Which command can be a router to verify the layer 3 path to a host?（）

A.traceroute address
B.tracert address
C.ssh address
D.telnet address

2.單項選擇題Which command reveals the last method used to power cycle a router?（）

A.show reload
B.show boot
C.show running-config
D.show version

3.多項選擇題Before installing a new, upgraded version of the IOS, what should be checked on the router, and which command should be used to gather this information? （）

A.the amount of available ROM
B.the amount of available flash and RAM memory
C.the version of the bootstrap software present on the router
D.show version
E.show processes
F.show running-config

4.多項選擇題

Refer to the graphic. A static route to the 10.5.6.0/24 network is to be configured on the HFD router. Which commands will accomplish this? （）

A.HFD（config）#iproute10.5.6.00.0.0.255fa0/0
B.HFD（config）#iproute10.5.6.00.0.0.25510.5.4.6
C.HFD（config）#iproute10.5.6.0255.255.255.0fa0/0
D.HFD（config）#iproute10.5.6.0255.255.255.010.5.4.6
E.HFD（config）#iproute10.5.4.60.0.0.25510.5.6.0
F.HFD（config）#iproute10.5.4.6255.255.255.010.5.6.0