Which of the following are characteristics of named access lists?（）
A. Individual statements in a named access list may be deleted.
B. They require a numbered range from 1000 to 1099.
C. When created, they must be specified as standard or extended.
D. They are created with the ip access-list command.
E. The entire access list must be deleted before editing.
F. They are applied with the ip name-group command.
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下列哪项不属于隔爆外壳的基本要求（）。
A. 形状
B. 容积
C. 结构
D. 质量
隔爆型电气设备之所以能够隔爆，关键是它有一个特制的（）。
A. 隔爆外壳
B. 隔爆结构
C. 内外隔爆系统
D. 隔爆开关
A Cisco Aironet Wireless LAN Adapter CB21AG is inserted into a user’s PC cardbus slot. Both the green status LED and the amber activity LED are blinking slowly. What is the condition of the adapter？ （）
A. The adapter is scanning for the wireless network for which it is configured.
B. The adapter is in power save mode.
C. The adapter is transmitting or receiving data while associated to an access point or another client.
D. The adapter is not receiving power.
E. The adapter is associated to an access point or another client.
F. None of the other alternatives apply
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