【名词&注释】
网络通信(network communication)、排除故障(debugging)、基本条件(basic condition)、洗衣机(washing machine)、包装箱(packing box)、信噪比。、各种活动(various activities)、可表示(can be expressed)、性能好(good performance)、有噪声(noisy)
[单选题]电视机的包装箱通常采用______条码。
A. EAN-13
B. SCC-14
C. ITF-14
D. UCC/EAN-128
查看答案&解析
举一反三：
[单选题]
B． 3
C． 4
D． 6
A. 1.5B． 3
B. 4
C. 6
[单选题]日常网络管理模式提供的网络管理入口不含(63)。
A. 对象入口
B. 用户入口
C. 事件入口
D. 功能入口
[单选题]While the Internet is inherently insecure, businesses still need to preserve the privacy of data as it travels over the network. To help do that, the Internet Engineering Task Force an international group of network designers, operators, vendors, and researchers concerned with the evolution of(71)has developed a suite of(72)called Internet Protocol Security(IPSec).IPSec creates a standard platform. to develop secure networks and electronic(73)between two machines. Secure tunneling via IPSec creates(74)connections in a network through which data packets can move. It creates these tunnels between remote users and within a local network. It also(75)each data packet in a new packet that contains the information neccessary to set up, maintain and tear down the tunnel when it's no longer needed.
A. channels
B. Web browser
C. Internet data
D. Internet architecture
[单选题]布线系统与(36)紧密相关。光缆是用(37)携带信息的。光纤有5个优点：性能好(good performance)、覆盖范围广、支持更多用户、安全性好以及(38)。
A. 楼群
B. 局域网
C. 传输介质
D. 网络体系结构
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