题目内容

掩码的十进制形式为255.255.255.240,则该掩码中1的个数为多少?利用该掩码划分子网时,每个子网的可用IP地址数量是多少?

A. 28,30
B. 27,14
C. 28,14
D. 27,30

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某公司申请了一个C类网络地址218.11.45.0,该公司的技术部有95台电脑,市场部有39台电脑,管理部有5台电脑,现对所申请的C类网络进行子网划分,划分时遵循技术部->市场部->管理部的顺序,请问市场部所分配的子网的网络地址是多少?

A. 218.11.45.0
B. 218.11.45.128
C. 218.11.45.192
D. 218.11.45.255

What technology can e-commerce use?

A. the web
B. the Internet
C. intranets or extranets
D. combination of the above

8 Which of the following are applications of e-commerce?

A. internet shop
B. supply chain management
C. online marketing
D. combination of the above

Electronic business may be defined as the application of __________ and __________ __________ (ICT 信息和通信技术) in support of all the activities of business.

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