(71 ) is the sending and receiving of the messages by computer. It is a fast, low-cost way of communicating worldwide.
-
Firewall is a(74) mechanism used by organizations to protect their LANs from the Internet.
- A．reliable
- B．stable
- C．peaceful
- D．security
-
In(75) programming, the user determines the sepuence of instions to be executed, not programmer.
- A．top-down
- B．structure
- C．data-driven
- D．event-driven
-
C++ fully supports(73)programming.
- A．visual
- B．object-oriented
- C．logic
- D．natural language
-
(72) is the conscious effort to make all jobs similar, routine, and interchangeable.
- A．WWW
- B．Informatization
- C．Computerization
- D．Standardization
-
(71 ) is the sending and receiving of the messages by computer. It is a fast, low-cost way of communicating worldwide.
- A．LAN
- B．Post office
- C．E-Mail
- D．Interface
-
In C language,(69) are used to create variables and are grouped at the top of a program block.
- A．declarations
- B．dimensions
- C．comments
- D．descriptions
-
An(70) statement can perform. a calculation and store the result in a variable so that it can be used later.
- A．executable
- B．input
- C．output
- D．assignment
-
(68) are those programs that help find the information you are trying to locate on the WWW．
- A．Windows
- B．SearchEngines
- C．WebSites
- D．WebPages
-
(66) is a device that converts images to digital format．
- A．Copier
- B．Printer
- C．Scanner
- D．Display
-
In C language, a(67) is a series of characters enclosed in double quotes．
- A．matrix
- B．string
- C．program
- D．stream
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