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问题:

[单选] Which statement describes the call behavior of the Cisco Unified Wireless IP Phone 7921G when it roams from 802.11b to 802.11a?()

A . The phone does a directed call hangup on 802.11b,then does an auto-redial on 802.11a,creating a new call.
B . The phone does a directed call hangup on 802.11b, then the user does a redial on 802.11a,creating a new call.
C . The phone does a disassociation on 802.11b and an association on 802.11a,and call remains up if the subnet has not changed.
D . The phone does not roam from 802.11b to 802.11a when on an active call.
E . The phone must switch network profiles to roam from 802.11b to 802.11a.

按授权范围划分的许可协议的种类。 镜像阶段论 On a wlan controller,what is the default roaming bandwidth percentage reserved for voice clients?() 12 percent。 6 percent。 18 percent。 24 percent。 When determining a customer’s security requirements using the security site survey from the steps for success methodology, which three of theses should be included in the customer’s security policy and procedures?() Third-party due diligence policy review。 Remote Access Policy。 Encryption Policy。 Application change control policy。 Security Personnel policy。 110KV及以上的油浸式电力变压器的主绝缘采用()结构,这种结构可提高(),缩小绝缘尺度,节约材料。 Which statement describes the call behavior of the Cisco Unified Wireless IP Phone 7921G when it roams from 802.11b to 802.11a?()
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