COMPUTER AWARENESS - MEMORY MCQS SET 64

COMPUTER AWARENESS - MEMORY MCQS SET 64

1. A 64-bit word consists of ________.
A.4 bytes        B.8 bytes        C.10 bytes        D.12 bytes
Answer: Option B
2. Which of the following RAM timing parameters determine its operating speed?
A.Tacc            B.tAA and tACS        C.tCO and tOD        D.tRC and tWC
 Answer: OptionD

3. The reason the data outputs of most ROM ICs are tristate outputs is to:
A.allow for three separate data input lines.
B.allow the bidirectional flow of data between the bus lines and the ROM registers.
C.permit the connection of many ROM chips to a common data bus.
D.isolate the registers from the data bus during read operations.
Answer: Option C
4. Select the statement that best describes Read-Only Memory (ROM).
A.nonvolatile, used to store information that changes during system operation
B.nonvolatile, used to store information that does not change during system operation
C.volatile, used to store information that changes during system operation
D.volatile, used to store information that does not change during system operation
Answer: Option B
5. How many 2K × 8 ROM chips would be required to build a 16K × 8 memory system?
A.2        B.4        C.8        D.16
Answer: Option C
6. What is the maximum time required before a dynamic RAM must be refreshed?
A.2 ms        B.4 ms        C.8 ms        D.10 ms
Answer: Option A
7. Which of the following best describes random-access memory (RAM)?
A.a type of memory in which access time depends on memory location
B.a type of memory that can be written to only once but can be read from an infinite number of times
C.a type of memory in which access time is the same for each memory location
D.mass memory
Answer: Option C

8. Why are ROMs called nonvolatile memory?
A.They lose memory when power is removed.
B.They do not lose memory when power is removed.
Answer: Option B

9. Which of the following describes the action of storing a bit of data in a mask ROM?
A.A 1 is stored in a bipolar cell by opening the base connection to the address line.
B.A 0 is stored in a bipolar cell by shorting the base connection to the address line.
C.A 1 is stored by connecting the gate of a MOS cell to the address line.
D.A 0 is stored by connecting the gate of a MOS cell to the address line.
Answer: Option C

10.Address decoding for dynamic memory chip control may also be used for:
A.controlling refresh circuits            B.read and write control
C.chip selection and address location        D.memory mapping
Answer: Option C