Memory and Storage Questions and Answers

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Q31
Typically, how often is DRAM refreshed?
  • A 2 to 8 ms
  • B 4 to 16 ms
  • C 8 to 16 s
  • D 1 to 2 s
Answer: Option B
Q32
Which type of ROM can be erased by an electrical signal?
  • A ROM
  • B mask ROM
  • C EPROM
  • D EEPROM
Answer: Option D
Q33
Suppose that a certain semiconductor memory chip has a capacity of 8K × 8. How many bytes could be stored in this device?
  • A 8,000
  • B 64,000
  • C 65,536
  • D 8,192
Answer: Option D
Q34
Data is written to and read from the disk via a magnetic ________ head mechanism in the floppy drive.
  • A cylinder
  • B read/write
  • C recordable
  • D cluster
Answer: Option B
Q35
What does the term "random access" mean in terms of memory?
  • A Addresses must be accessed in a specific order.
  • B Any address can be accessed in any order.
Answer: Option B
Q36
A 64-Mbyte SIMM is installed into a system, but when a memory test is executed, the SIMM is detected as a 32-Mbyte device. What is a possible cause?
  • A The memory module was not installed properly.
  • B The voltage on the memory module is incorrect.
  • C The most significant address line is stuck high or low.
  • D The address decoder on the SIMM is faulty.
Answer: Option D
Q37
How many address lines would be required for a 2K × 4 memory chip?
  • A 8
  • B 10
  • C 11
  • D 12
Answer: Option C
Q38
When a RAM module passes the checkerboard test it is:
  • A able to read and write only 1s.
  • B faulty.
  • C probably good.
  • D able to read and write only 0s.
Answer: Option C
Q39
Which type of ROM has to be custom built by the factory?
  • A ROM
  • B mask ROM
  • C EPROM
  • D EEPROM
Answer: Option B
Q40
What is the computer main memory?
  • A Hard drive and RAM
  • B CD-ROM and hard drive
  • C RAM and ROM
  • D CMOS and hard drive
Answer: Option C
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