單項(xiàng)選擇題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


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1.單項(xiàng)選擇題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

3.單項(xiàng)選擇題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.

4.單項(xiàng)選擇題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.

7.單項(xiàng)選擇題Acknowldgement, Sequencing, and Flow control are characteristics of which OSI layer?()

A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5
E. Layer 6
F. Layer 7

8.單項(xiàng)選擇題The administrator is unable to establish connectivity between two Cisco routers. Upon reviewing the command output of both routers, what is the most likely caust of the problem?()

A. Authentication needs to be changed to PAP for both routers.
B. Serial IP addresses of routers are not on the same subnet.
C. Username/password is incorrectly configured.
D. Router names are incorrectly configured.

9.單項(xiàng)選擇題What is valid reason for a switch to deny port access to new devices when port security is enabled?()

A. The denied MAC addresses have already been learned or confgured on another secure interface in the same VLAN.
B. The denied MAC address are statically configured on the port.
C. The minimum MAC threshold has been reached.
D. The absolute aging times for the denied MAC addresses have expired.

10.單項(xiàng)選擇題What is the purpose using the traceroute command?()

A. to map all the devices on a network.
B. to display the current TCP/IP configuration values.
C. to see how a device MAC address is mapped to its IP address.
D. to see the path a packet will take when traveling to a specified destination.
E. to display the MTU values for each router in a specified network path from source to a destination.

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