linux下在安装了Web服务器后，当在inted下启动时，在系统文件/etc/senices中要添加(54)，在单独运行时，命令是(55)。Web系统的系统配置文件(56)，它定义了服务器在DNS数据库中注册的主机名，这是通过(57)命令定义的。测试WWW服务是否运行可以通过命令(58)。
- A．http＜80＞/tcp
- B．http stream tcp
- C．Server Type inted
- D．Port 80
-
(76)
- A．period
- B．days
- C．epoch
- D．phase
-
(74)
- A．scarcity
- B．lack
- C．deficiency
- D．shortage
-
(75)
- A．restrict
- B．limited
- C．imprison
- D．confine
-
Ipv6 is(71)for "Internet Protocol Version 6"。Ipv6 is the "next generation" protocol design by the IETF to(72)the current version Inernet Protocol, IP Version 4. Most of today's internet uses Ipv4, which is now nearly twenty years old. Ipv4 has been remarkably resilient in spite of its age, but it is beginging to have problems. Most importantly, there is a growing(73)of Ipv4 addresses, which are needed by all new machines added to the Internet. Ipv6 fixs a number of problems in Ipv4, shch as the(74)number of available Ipv4 addresses. It also adds many improvements to Ipv4 in areas such as souting and network autoconfiguration. Ipv6 is expected to gradually replace Ipv4, with the two coexing for a number of years during a transition(75)A.
- A．short
- B．abbreviate
- C．abbreviation
- D．initial
-
(73)
- A．substitution
- B．replace
- C．switchover
- D．swap
-
(71)
- A．FTP
- B．UDP
- C．IP
- D．HTTP
-
(69)
- A．Email address and IP address
- B．MAC address and port address
- C．MAC address and IP address
- D．port number and IP address
-
(70)
- A．full-duplex
- B．half-duplex
- C．simplex
- D．complex
-
In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
- A(66)is basically an end point of a communication link between two applications. Sockets that extend over a network connect two or more applications running on separate computers at tached to the network. A socket(67)two addresses:(68). Sockets provide a(
- A．program
- B．UDP
- C．socket
- D．TCP
-
(68)
- A．is made of
- B．composed of
- C．is composed of
- D．is consisted of
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