A.show mac-address
B.show arp
C.show table
D.show switchport

A.a dynamic routing procotol on InternetRouter to advertise summarized routers to CentralRouter.
B.a dynamic routing procotol on CentralRouter to advertise summarized routers to InternetRouter.
C.a static route on InternetRouter to direct traffic that is destined for 172.16.0.0/16 to CentralRouter.
D.a dynamic routing procotol on InternetRouter to advertise all routes to CentralRouer.
E.a dynamic routing procotol on CentralRouer to advertise all routes to InternetRouter
F.a static，default route on CentralRouter that directs traffic to InternetRouter.

A.show command
B.debug command
C.configuration command
D.rommon command

A.A successor route is used by EIGRP to forward traffic to a destination.
B.Successor routes are saved in the topology table to be used if the primary route fails.
C.Successor routes are flagged as "active" in the routing table.
D.A successor route may be backed up by a feasible successor route.
E.Successor routes are stored in the neighbor table following the discovery process.

A.one
B.three
C.two
D.zero

A.A new switch has no VLANs configured.
B.Connectivity between VLANs requires a Layer 3 device.
C.VLANs typically decrease the number of collision domains.
D.Each VLAN uses a separate address space.
E.A switch maintains a separate bridging table for each VLAN.
F.VLANs cannot span multiple switches.

A.The IOS image will be ignored.
B.The router will prompt to enter initial configuration mode.
C.The router will boot to ROM.
D.Any configuration entries in NVRAM will be ignored.
E.The configuration in flash memory will be booted.

A.show frame-relay end-to-end
B.show frame-relay map
C.show frame-relay lmi
D.show frame-relay pvc

A.Frame Relay
B.HDLC
C.x.25
D.PPP

A.amount of RAM
B.bridge priority
C.IOS version
D.IP address
E.MAC address
F.speed of the links