單項選擇題Which command shows your active Telnet connections?()

A. show session
B. show cdp neighbors
C. show users
D. show queue


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1.單項選擇題Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols?()

A. transport type all
B. transport output all
C. transport preferred all
D. transport input all

3.單項選擇題Which dose the frame-relay interface-dlci command configure?()

A. remote DLCI on the main interface
B. local DLCI on the main interface
C. local DLCI on the subinterface
D. remote DLCI on the subinterface

4.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

6.單項選擇題A network administrator receives an error message while tring to configure the Ethernet interface of a router with IP address 10.24.24.24/29.which statement explains the reason for this issue?()

A. The address is a broadcast address
B. The Ehernet interface is faulty
C. VLSM-capable routing protocols must be enable first on the router.
D. This address is a network address.

7.單項選擇題What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?()

A. lowest port MAC address
B. port priority number and MAC address.
C. VTP revision number
D. highest port priority number.
E. path cost

8.單項選擇題Assuming default setting,how can you erase the VTP database of VLANs on a CISCO IOS switch running in VTP server mode?()

A. Enable VTP pruning
B. From privileged mode ,erase the startup configuration file,then reload.
C. From privileged mode ,erase the vlan date file, then reload.
D. Cycle the switch power.

9.單項選擇題Which of these represents an IPv6 link-local address?()

A. FE08::280e:611:a:f14f:3d69
B. FE81::280f:512b:e14f:3d69
C. FE80::380e:611a:e14f:3d69
D. FEFE:0345:5f1b::e14d:3d69

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On which options are standard access list based?()

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