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25. Speeds of modems are generally classified by the number of they can transmit. A, cycles per second C. frequency per second B. bits per second D. all of the choices 26.When a key is pressed on the keyboard, which standard is used for converting the keystroke into the corresponding bits? AL ANSI C. ASCI B. EBCDIC D. IS0 27.Which is a semiconductor memaory? A, Dynamic C. Static B. Bubble D.BothA&C 28.What does DMA stand for? A, Distinct Memory Access C. Direct Module Access B. Direct Memory Access D. Direct Memory Allocation 29.A female port with 3 rows and 15 pins is called, AVGA port C. parallel port B. USB port D. serial port 30. What will you do when you install a new heat sink? A, insert thermal compound between processor and system board E. apply isopropyl alcohol between processor and heat sink C. insert thermal compound between processor and heat sink D. apply isopropyl alcohol between processor and system board 31.Which device is required for the Internet connection? A, Joystick C. Modem B. CD Drive D. NIC Card 32.The BIOS is the abbreviation of : A. Basic Input Output System C. Basic Input Output Symbol B. Best Input Output System D. Base Input Qutput System 33.What do you call a single point on a computer screen? A, Cell C. Element B. Pixel D. Bit