【名词&注释】
影响力(influence)、领导者(leader)、精神领袖(spiritual leader)、帧中继(frame relay)、微波通信系统(microwave communication system)
[判断题]微波通信系统(microwave communication system)均以“备份切换”提高系统可用度。（）
查看答案&解析
举一反三：
[单选题]相关群体中有影响力的人物称为（ ）
A. 意见领袖
B. 道德领袖
C. 精神领袖
D. 经济领导者
[单选题]TD-SCDMA一个载波的带宽为（）。
A. 200kHz
B. 1.25MHz
C. 1.6MHz
D. 3.2MHz
[多选题]【Recently， telecommunication carriers has been building All-IP core networks in order to effectively support various kinds of fixed and mobile broadband services，such as up-and down-loading You tube and SNS（Social Networking Services）with rich video file，as well as broadband mobile Internet services. Such All-IP network is called NGN（Next Generation Network），which guarantees secure authentication and QoS such as the bandwidth and the delay. From the service point of view，convergence of fixed and mobile communications，known as FMC（Fixed Mobile Convergence）is becoming a key increasing new services and expanding the market.】 Form the paragraph above，we can see that（）can be defined as a network that can effectively support various kinds of fixed and mobile broadband services，with guaranteed QoS in terms of（）and etc. And the key to develop new services and gain larger market share should be（）
A. All-IP access network
B. broad band network
C. NGN
D. social network A．data rate
E. error rate
F. availability
G. band width， delay A．mobile communications
H. Internet
I. All-IP core network
J.
K. Fixed Mobile
L. Convergence
[单选题]下列协议中，用于配置主机IP地址或信息的是（）。
A. NAT
B.
C. DH
D. CP
E. OSP
F. F.
G. SMTP
[单选题]以下关于帧中继的叙述中，不正确的是（ ）。
A. 网络提供虚电路服务和数据报两种服务
B. 用户平面和控制平面分离
C. 用户平面LAP
D. F不提供差错控制和流量控制
E. 提供了PV
F. C管理功能，终端可判断PV
G. C当前状态是否可用
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