Which switch should be used with the ipconfig command if an administrator wants to test the functionality of a DHCP server?（）A、/renewB、/flushdnsC、/releaseD、/all

第1题：

第2题：

Which of the following characteristics describe the BPDU Guard feature（）

• A、ABPDU Guard port should only be configured on ports with PortFast enabled.
• B、BPDU Guard and PortFast should not be enabled on the same port.
• C、BPDU Guard is used to ensure that superior BPDUs are not received on a switch port.
• D、ABPDU Guard port receiving a BPDU will go into err-disablestate.
• E、ABPDU Guard port receiving a BPDU will be disabled.
• F、BPDU Guard can be enabled on any switch port.

正确答案:A,E

第3题：

Which two statements are true regarding an Ethernet collision domain?（）

• A、If a switch is used, the collision domain is limited to each device and the switch
• B、If a hub is used, the collision domain is limited to each device and the hub
• C、If a hub is used, the collision domain includes all devices connected to the hub
• D、If a switch is used, the collision domain includes all devices connected to the switch

正确答案:A,C

第4题：

Which type of cable should be used to make a connection between the Fa0/0 port on a router and the Fa0/0 port switch?（）

• A、Rollover cable
• B、Console cab le
• C、Crossover cable
• D、Straight-through cable
• E、Serial cable

正确答案:C

第5题：

Which are valid modes for a switch port used as a VLAN trunk?（）

• A、transparent
• B、auto
• C、on
• D、desirable
• E、blocking
• F、forwarding

正确答案:B,C,D

第6题：

A network administrator needs to add an additional connection to a room. The administrator adds a new Ethernet switch and must connect it to an existing switch. Which cable type should be used to connect the two switches?（）

• A、CAT3 cable
• B、Serial cable
• C、Crossover cable
• D、Rollover cable

正确答案:C

第7题：

Which of the following commands should be used to assure that a dump can be forced using the reset button on a system without a key switch? （）

• A、 sysdumpdev -k 
• B、 sysdumpdev -L 
• C、 sysdumpdev -K 
• D、 sysdumpdev -P

正确答案:C

第8题：

Which two statements are true regarding an Ethernet collision domain?（）

• A、The likelihood of collisions occurring increases when a switch is used.
• B、The likelihood of collisions occurring increases when a hub is used.
• C、If a hub is used, the collision domain is limited to each device and the hub.
• D、If a switch is used, the collision domain is limited to each device and the switch.

正确答案:B,D

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第14题：

For which type of connection should a straight-through cable be used?（）

• A、switch to switch
• B、switch to hub
• C、switch to router
• D、hub to hub
• E、router to PC

正确答案:C

第15题：

Which switch should be used with the ipconfig command if an administrator wants to test the functionality of a DHCP server？（）

• A、 /renew
• B、 /flushdns
• C、 /release
• D、 /all

正确答案:A

第16题：

Which VTP mode should a Cisco switch be set to if this switch is to add or delete VLANs to a management domain?（）

• A、Transparent
• B、Server
• C、Auto
• D、Client
• E、User

正确答案:B

第17题：

Which are valid modes for a switch port used as a VLAN trunk? （）

• A、transparent
• B、auto
• C、on
• D、desirable

正确答案:B,C,D

第18题：

An administrator is having a hard time adding a new switch to the network. After verifying that allthe ports are configured correctly on each switch, which of the following should the administratorverily NEXT?（）

• A、Straight-through cable is used to connect both switches
• B、Loopback plug is connected
• C、Crossover cable is used to connect both switches
• D、Cable is a rollover cable

正确答案:C

第19题：

Which two statements are true regarding an Ethernet collision domain?（）

• A、If a switch is used, the collision domain includes all devices connected to the switch.
• B、If a hub is used, the collision domain includes all devices connected to the hub.
• C、If a hub is used, the collision domain is limited to each device and the hub.
• D、If a switch is used, the collision domain is limited to each device and the switch.

正确答案:B,D

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