CCNA第三学期英文答案chapter7.docVIP

1 窗体顶端 Which two conditions have favored adoption of 802.11g over 802.11a? (Choose two.) 802.11a suffers from a shorter range than 802.11g. The 2.4 GHz frequency band is not as crowded as the 5 GHz band. 802.11a is more susceptible to RF interference from common commercial items. 802.11a uses a more expensive modulation technique than 802.11g. 802.11g is backward compatible with 802.11b, but 802.11a is not. 窗体底端 2 窗体顶端 Which two statements concerning network security are accurate? (Choose two.) 802.11i uses 3DES for encryption. Open authentication uses no client or AP verification. The 802.11i protocol is functionally identical to WPA. 802.11i incorporates a RADIUS server for enterprise authentication. A wireless client first associates with an AP and then authenticates for network access. 窗体底端 3 窗体顶端 Which installation method will allow connectivity for a new wireless network? set up WEP on the access point only set up open access on both the access point and each device connected to it set up full encryption on the access point while leaving each device connected to the network open set up full encryption on each device of the WLAN while leaving the access point settings open 窗体底端 4 窗体顶端 Refer to the exhibit. When configuring the wireless access point, which setting does the network administrator use to configure the unique identifier that client devices use to distinguish this wireless network from others? Network Mode Network Name (SSID) Radio Band Wide Channel Standard Channel 窗体底端 5 窗体顶端 Which two statements are true regarding wireless security? (Choose two.) MAC address filtering prevents the contents of wireless frames from being viewable. Providing a wireless client with the network key allows an available network to be visible. Disabling an access point from broadcasting the SSID prevents the access point from being discovered. Default SSIDs on specific manufacturer APs are generally known and may permit hostile wireless co