Memory and Storage - General Questions (10)

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Memory and Storage - General Questions

73.

The device shown in the given figure is checked with a logic probe and the output is HIGH.

mcq12_1019_1

A.	The device is working properly.
B.	For the input conditions shown the output should be LOW; the input is shorted to ground.
C.	For the input conditions shown the output should be neither HIGH nor LOW; the device is shorted to .
D.	The device is probably alright; the problem is most likely caused by the stage connected to the output of the device.

Answer: Option C

Explanation:

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74.

A CD-R disk is created by applying heat to special chemicals on the disk and these chemicals reflect less light than the areas that are not burned, thus creating the same effect as a pit does on a regular CD.

A.	True
B.	False

Answer: Option A

Explanation:

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75.

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

Explanation:

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76.

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

Explanation:

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77.

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

Explanation:

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78.

What is the significance of the inverted triangles on the outputs of the device in the given figure?

mcq12_1012_1 (1)

A.	They represent inverters and mean that the outputs are active-LOW.
B.	They represent buffers and mean that the outputs can drive 40 TTL loads, instead of the normal 10.
C.	It means that the outputs will be active only if a change has occurred at that memory location since the last read/write cycle.
D.	The outputs are tristated.

Answer: Option D

Explanation:

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79.

For the given circuit, which of the following is correct?

mcq12_1012_1

A.	The number 5 is being written to the memory at address location 203.
B.	The chip has not been enabled, since the EN terminal is 0; therefore, nothing will be written to the chip and the output is tri-stated.
C.	Decimal 10 is being written into memory location 211.
D.	The read/write line is LOW; therefore, decimal 5 is being stored at memory location 211.

Answer: Option D

Explanation:

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80.

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

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Memory and Storage - General Questions (10)

Memory and Storage - General Questions

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