You are troubleshooting a problem with a cisco 7920 wireless ip phone on a standalone wlan. the phone rings but， when you Answer ，the call is dropped. What may have caused this problem？（） publicly secure packet forwarding is enabled.。 the minimum data rate is not set to 11 mbps.。 an address resolution protocol is enabled.。 the access point is set to the least congested channel.。
关于实试验中求出的与最大干密度相对应的最佳含水量Wj，测出该土层的含水量W，之间关系正确的是（） A.W<Wj；土太湿，需晾至W≈Wj。 只有当W≈Wj时开始碾压，方可达到最大干密度的效果。 如W>Wj，土太干，需适当洒水后再测含水率。 以上都对。
What does a broad-spectrum interferer lower？（） SNR。 noise floor。 level of interference。 Received Signal Strength Indicator。
请将十六进制数4A2H转换为十进制，二进制。
试述商业银行资产管理理论。
A customer asks for help choosing their WAN technology, the customer is looking for A solution that can be used across very long distances, provides QoS and VPN support, and is sensitive to their budgeting needs ,which WAN technology would you recommend?（）
