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4G和通信理论
题目内容
现网周期性位置区更新的时间设置一般是
A:A小时
B:DB分钟
C:C0分钟
D:B小时
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相关问题列表
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中兴OLT设备具备风扇转速可控,其控制方式有()
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国际通用的三种温标为 ()。
[2]
关于无线局域网WAN口的IP地址下列叙述正确的是
[3]
排查组播业务丢包时,可将捕获到的udp组播包,通过wireshark的decode功能转换成()格式的包来分析丢包率
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故障处理定位原则,以下正确的是
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针对家庭网络WiFi的特点,下列描述正确的是()
[6]
勘查室内环境不需要了解
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初相位为“负”,表示正弦波形的起始点在坐标原点O点的( )。
[8]
火灾自动报警系统中的CRT显示器、消防通讯设备的电源,宜由()。
[9]
IMS业务的重点客户是
[10]
以下对GPON系统传输机制描述正确的是
[11]
隔离开关是隔离电源用的电器,它具有灭弧装置,能带负荷拉合,能切断短路电流。
[12]
传感器一定是将非电量转成电量的装置.
[13]
GPON系统QoS处理的最小单元是?()
[14]
三个阻值相同的电阻串联,其总电阻等于一个电阻值的( )。
[15]
在应用层的各协议中()协议提供文件传输服务
[16]
采用波形间断原理构成的变压器差动保护,当间断角小于整定值时开放保护。
[17]
组播业务的发送机制是
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[19]
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[20]
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相关考题
👉Whatstatementaboutcellsplitasameansofincreasingcapacityistrue?
A:A 1:4 split increases the capacity per square kilometer by a factor of eight.
B:In a 1:4 split, the antenna directions on all sites that existed before must be changed 30 degrees.
C:In a 1:3 split, the antenna directions on all sites that existed before must be changed 30 degrees.
D:A 1:3 split increases the capacity per square kilometer by a factor of six.
E:All the statements above are incorrect.
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👉WhatistheaverageTCHreuseina12/8/7/4MRP?
A:6.3
B:7.5
C:7.75
D:8
E:9
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👉Whatismeantbya“fractionallyloaded”network?
A:A network where DTX is used on both uplink and downlink.
B:A network where the data transmission is very bursty.
C:A network where the number of TRXs per cell is smaller than the number of hopping frequencies.
D:A network where the channel utilization never goes above Aserved/#TCHs.
E:A network where the “hardware load” is higher than the “frequency load”.
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👉Whyareneighboringcellrelationscreatedbeforeusingthefrequencyplanningtool?
A:To set hysteresis parameters.
B:For export to CN
C:To estimate adjacent -channel interferenc
D:For application of carrier separation constraints.
E:To estimate co-channel interferenc
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👉WhatdotheLEVEL,LEVTHR,LEVHYST,PSSTEMP,andPTIMTEMPparametershaveincommon?
A:They are used in the radio network feature, DTX.
B:They are used in the radio network feature, dynamic power control.
C:They are used in an overlaid, underlaid cell structur
D:They are used in an hierarchical cell structur
E:They are used in the radio network feature, cell loading sharing.
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