11●与Linux操作系统兼容性最好的__(51)__操作系统。Linux操作系统中默认的超级用户名是__(52)__。在Linux操作系统中安装Apache Web服务器，默认的WWW侦听端口是__(53)__；默认的Web站点存放在__(54)__目录中；默认的最大并发用户数为255。为了使ApacheWeb服务器的并发用户数扩大到1024，应格"src/include/httpd.h"文件中的HEAD_SERVER_LIMIT参数配置为1024，并重新编译Linux内核，最后还应将"httpd.conf"文件中的__(55)__参数配置为1024。
A.NetWare
B.Unix
C.Windows
D.OS/2
开始考试练习点击查看答案12●在以太网的10Base-5标准中，粗同轴电缆的特性阻抗为__(56)__，物理层采用__(57)__编码；100Base-TX采用的是__(58)__物理拓扑结构，传输介质通常采用__(59)__类双绞线；100Base-FX采用的传输介质是__(60)__。
A.50Ω
B.75Ω
C.100Ω
D.150Ω
开始考试练习点击查看答案13●在Internet中，IP地址168.147.52.38属于__(61)__地址，该地址的二进制表示是__(62)__。如果IP地址为127.0.0.1，那么它通常表示__(63)__。从IP地址空间划分来看，B类地址最多可包含__(64)__个子网，每个B类网络最多可包含__(65)__个主机地址。
A.A类
B.B类
C.C类
D.D类
开始考试练习点击查看答案14●For each blank, choose the best answer from the four choices and write down on the answer sheet. __(66)__ is a channel's capacity which directly reflects the data transfer rate of the channel. __(67)__ functions in a NetWare network which is used to define addressing schemes. __(68)__ is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains. __(69)__is the popular LAN developed under the direction of the IEEE802.3. __(70)__is a device which enables digital microcomputers to communicate across analog telephone lines.
A.The volume
B.The bandwidth
C.The noise
D.The delay
开始考试练习点击查看答案15●In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet. Communicating via e-mail is by far the most common Intemet activity. You can __(71)__ with anyone in the world who has an Intemet address or e-mail __(72)__ with a system connection to the Internet. All you need is __ (73)__ the Internet and an e-mail program. Two of the most widely used e-mail programs are Microsoft's (74) _ and Netscape's Navigator. A typical e-mail message has three basic __(75)__ : header, message, and signature.
A.connect
B.exchange
C.communicate
D.game
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