[单选]
You are troubleshooting a one-way call problem with a cisco 7920 wireless ip phone on a standalone wlan.
What may have caused this problem？（）

A . the minimum data rate is not set to 11 mbps.
B . publicly secure packet forwarding is enabled.
C . the access point is set to the least congested channel.
D . an address resolution protocol has been disabled.

如何提高自我的挫折承受能力？商业银行如何实施有效的存款负债管理。压力容器的安全附件主要有（）安全阀、压力表、温度计。放空管、止回阀、疏水器。爆破片、液面计。 How does a controller-based access point configured to operate in sniffer mode behave？（） allows client traffic， captures data on all channels。 allows client traffic， captures data on a single channel。 allows no client traffic， captures data on all channels。 allows no client traffic， captures data on a single channel。回购利率的决定因素有（）。用于回购的证券的质地。回购期限的长短。交割的条件。货币市场其它子市场的利率水平。资本.市场利率水平。

You are troubleshooting a one-way call problem with a cisco 7920 wireless ip phone on a standalone wlan.
What may have caused this problem？（）

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[单选] You are troubleshooting a one-way call problem with a cisco 7920 wireless ip phone on a standalone wlan. What may have caused this problem？（）

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[单选]
You are troubleshooting a one-way call problem with a cisco 7920 wireless ip phone on a standalone wlan.
What may have caused this problem？（）