单项选择题What is the name of the VTP mode of operation that enables a switch to forward only VTP advertisements while still permitting the editing of local VLAN information?()

A. server
B. client
C. tunnel
D. transparent


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1.单项选择题Which command will show the MAC addresses of stations connected to switch ports?()

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

2.单项选择题QoS policies are applied on the switches of a LAN. Which type of command will show the effects of the policy in real time?()

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

3.单项选择题How many subnets can be gained by subnetting 172.17.32.0/23 into a /27 mask, and how many usable host addresses will there be per subnet?()

A. 8 subnets, 31 hosts
B. 8 subnets, 32 hosts
C. 16 subnets, 30 hosts
D. 16 subnets, 32 hosts
E. A Class B address can't be subnetted into the fourth octet.

5.单项选择题On the network 131.1.123.0/27, what is the last IP address that can be assigned to a host?()

A. 131.1.123.30
B. 131.1.123.31
C. 131.1.123.32
D. 131.1.123.33

6.单项选择题All WAN links inside the ABC University network use PPP with CHAP for authentication security. Which command will display the CHAP authentication process as it occur between two routers in the network?()

A. show chap authentication
B. show interface serial0
C. debug ppp authentication
D. debug chap authentication
E. show ppp authentication chap

8.单项选择题What is one reason that WPA encryption is preferred over WEP?()

A. A WPA key is longer and requires more special characters than the WEP key.
B. The access point and the client are manually configured with different WPA key values.
C. WPA key values remain the same until the client configuration is changed.
D. The values of WPA keys can change dynamically while the system is used.

9.单项选择题Which additional configuration step is necessary in order to connect to an access point that has SSID broadcasting disabled?()

A. Set the SSID value in the client software to public.
B. Configure open authentication on the AP and the client.
C. Set the SSID value on the client to the SSID configured on the AP.
D. Configured MAC address filtering to permit the client to connect to the AP.

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