COMPUTER AWARENESS - MEMORY MCQS SET 66

COMPUTER AWARENESS - MEMORY MCQS SET 66

1. Which of the following best describes volatile memory?
A.memory that retains stored information when electrical power is removed
B.memory that loses stored information when electrical power is removed
C.magnetic memory
D.nonmagnetic
Answer: Option B

2. What is a major disadvantage of RAM?
A.Its access speed is too slow.        

B.Its matrix size is too big.        

C.It is volatile.
D.High power consumption
Answer: Option C

3. What two functions does a DRAM controller perform?
A.address multiplexing and data selection    

B.address multiplexing and the refresh operation
C.data selection and the refresh operation    

D.data selection and CPU accessing
Answer: Option B

5. Dynamic memory cells store a data bit in a ________.
A.diode            B.resistor        C.capacitor        D.flip-flop
Answer: Option C

6. Which is not part of a hard disk drive?
A.Spindle        B.Platter        C.Read/write head        D.Valve
Answer: Option D

7. ROMs retain data when the ________.
A.power is off        B.power is on        C.system is down        D.all of the above
Answer: Option D

8. 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

9. Which type of ROM can be erased by an electrical signal?
A.ROM            B.mask ROM        C.EPROM        D.EEPROM
Answer: Option D

10. 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