單項選擇題How many channels are defined in the IEEE 802.11b DSSS channel set？（）

A. 3
B. 4
C. 11
D. 13
E. 14


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1.單項選擇題Which signal and noise values will result in the best phone communication with an access point？（）

A. Signal strength 0dBm， noise level 6dBm
B. Signal strength 8dBm， noise level 9dBm
C. Signal strength 4 dBm， noise level 4 dBm
D. Signal strength 6dBm， noise level 5 dBm

3.多項選擇題Which two statements about Cisco Security Management Suite are correct？ （）

A. It should be implemented in a management VLAN.
B. Its connection to managed devices should be over a data VLAN.
C. It is made up of Cisco Security MARS and Clean Access software.
D. It should be deployed as close to the edge of the network as possible.
E. It delivers policy administration and enforcement for the Cisco Self-Defending Network.

4.多項選擇題Which three mechanisms are used to secure management traffic from outside IPS sensors？（）

A. secure tunnels
B. a separate management VLAN
C. secure VLANs to isolate sensors
D. an out-of-band path around the firewall
E. asymmetric traffic flows to isolate sensors
F. private VLANs to put all sensors on isolated ports

5.多項選擇題In which two locations in an enterprise network can an IPS sensor be placed？ （）

A. bridging VLANs on two switches
B. bridging two VLANs on one switch
C. between two Layer 2 devices with trunking
D. between two Layer 2 devices without trunking
E. between a Layer 2 device and a Layer 3 device with trunking