在主存和CPU之间增加Cache的目的是(17)。在CPU执行一段程序的过程中，Cache的存取次数为2250次，由内存完成的存取次数为250次。若Cache的存取周期为6ns，内存的存取周期为24ns，则Cache的命中率为(18)，CPU的平均访问时间为(19)ns。
-
Viruses usually have two phases to their execution, the infection phase and the(75)phase. The later phase is optional, since stone viruses simply reproduce.
- A．reproduce
- B．proliferation
- C．defend
- D．attack
-
(74)isn't a type of transmission medium used for LANs.
- A．Twisted pair
- B．Coaxial cable
- C．Satellite
- D．Optical fiber
-
A(73)is used to communicate with another computer over telephone lines.
- A．keyboard
- B．modem
- C．mouse
- D．printer
-
Multimedia is the combination of computer and(72)technology.
- A．word processing
- B．picture
- C．video
- D．radio
-
In the RGB color spaces, each pixel on the screen has a corresponding RGB value which consists of()components.
- A．two
- B．three
- C．four
- D．six
-
In C language,(70)is a collection of one or more variables, possibly of different types, grouped together under a single name for convenient handling.
- A．a structure
- B．a file
- C．an array
- D．a string
-
A stack protocol can be used for(69).
- A．job scheduler in Operation System
- B．operation of arithmetic expressions
- C．removing the latest element inserted
- D．removing the earliest element inserted
-
A(68)program is usually described as a program written in high-level language.
- A．compiler
- B．executable
- C．source
- D．object
-
(70)
- A．13
- B．35
- C．19
- D．3
-
(69)
- A．3323H
- B．1303H
- C．B3A3 H
- D．1903H
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