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MCQs

Total Questions : 215 | Page 12 of 22 pages
Question 111. . FIFO is formed by an arrangement of ________.
  1.    diodes
  2.    transistors
  3.    MOS cells
  4.    shift registers
 Discuss Question
Answer: Option D. -> shift registers
Question 112. . What is the major difference between SRAM and DRAM?
  1.    DRAMs must be periodically refreshed.
  2.    SRAMs can hold data via a static charge, even with power off.
  3.    The only difference is the terminal from which the data is removed—from the FET Drain or Source.
  4.    Dynamic RAMs are always active; static RAMs must reset between data read/write cycles.
 Discuss Question
Answer: Option A. -> DRAMs must be periodically refreshed.
Question 113. . What is a major disadvantage of RAM?
  1.    Its access speed is too slow.
  2.    Its matrix size is too big.
  3.    It is volatile.
  4.    High power consumption
 Discuss Question
Answer: Option C. -> It is volatile.
Question 114. . What two functions does a DRAM controller perform?
  1.    address multiplexing and data selection
  2.    address multiplexing and the refresh operation
  3.    data selection and the refresh operation
  4.    data selection and CPU accessing
 Discuss Question
Answer: Option B. -> address multiplexing and the refresh operation
Question 115. . Dynamic memory cells store a data bit in a ________.
  1.    diode
  2.    resistor
  3.    capacitor
  4.    flip-flop
 Discuss Question
Answer: Option C. -> capacitor
Question 116. . Which of the following best describes volatile memory?
  1.    memory that retains stored information when electrical power is removed
  2.    memory that loses stored information when electrical power is removed
  3.    magnetic memory
  4.    nonmagnetic
 Discuss Question
Answer: Option B. -> memory that loses stored information when electrical power is removed
Question 117. . ROMs retain data when the ________.
  1.    power is off
  2.    power is on
  3.    system is down
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Question 118. . Which is not part of a hard disk drive?
  1.    Spindle
  2.    Platter
  3.    Read/write head
  4.    Valve
 Discuss Question
Answer: Option D. -> Valve
Question 119. . Typically, how often is DRAM refreshed?
  1.    2 to 8 ms
  2.    4 to 16 ms
  3.    8 to 16 s
  4.    1 to 2 s
 Discuss Question
Answer: Option B. -> 4 to 16 ms
Question 120. . Suppose that a certain semiconductor memory chip has a capacity of 8K × 8. How many bytes could be stored in this device?
  1.    8,000
  2.    64,000
  3.    65,536
  4.    8,192
 Discuss Question
Answer: Option D. -> 8,192

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