Computer Memory Questions

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61.

Which storage device cannot be erased?

A

A floppy disk

B

Magnetic tape storage

C

A CD-ROM

D

All of the above

Correct Answer: C

A CD-ROM, is a pre-pressed optical compact disc which contains data. The name is an acronym which stands for Compact Disc Read-Only Memory. Computers can read CD-ROMs, but cannot write to CD-ROMs which are not writable or erasable.

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62.

The tracks on a disk which can be accessed without repositioning the R/W heads is

A

Surface

B

Cylinder

C

Cluster

D

All of the above

E

None of the above

Correct Answer: B

The tracks on a disk which can be accessed without repositioning the R/W heads is Cylinder

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63.

Which access method is used for obtaining a record from a cassette tape?

A

Direct

B

Sequential

C

Random

D

All of the above

E

None of the above

Correct Answer: B

None.

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64.

Any type of storage that is used for holding information between steps in its processing is

A

CPU

B

Primary storage

C

Intermediate storage

D

Internal storage

E

None of the above

Correct Answer: C

Secondary storage (also known as external memory or auxiliary storage), differs from primary storage in that it is not directly accessible by the CPU. The computer usually uses its input/output channels to access secondary storage and transfers the desired data using intermediate area in primary storage.

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65.

The average time necessary for the correct sector of a disk to arrive at the read write head is ________ .

A

Down time

B

Seek time

C

Rotational delay

D

Access time

E

None of the above

Correct Answer: C

Rotational delay : A rotational delay is the amount of time between information requests and how long it takes the hard drive to move to the sector where the requested data is located. In other words, it is a time measurement, in milliseconds (ms), of how long before a rotating drive can transfer data.

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66.

Any storage device added to a computer beyond the immediately usable main storage is known as

A

Floppy disk

B

Hard disk

C

Backing store

D

Punched card

E

None of the above

Correct Answer: C

Backing store : The term backing storage refers to any non-volatile data storage that will retain a computer's data even after the computer is powered off. Common types of backing storage devices are hard drives, SSD, external hard disk drives, optical media such as CD or DVD, and flash media such as thumbdrives and memory sticks.

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67.

A storage system for small amounts of data is

A

Magnetic card

B

Magnetic tape

C

Punched card

D

Optical mark reader

E

None of the above

Correct Answer: A

Magnetic card : A magnetic stripe card is a type of card capable of storing data by modifying the magnetism of tiny iron-based magnetic particles on a band of magnetic material on the card. The magnetic stripe, sometimes called swipe card or magstripe, is read by swiping past a magnetic reading head.

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68.

Compression of digital data for efficient storage is

A

Buffer

B

CPU

C

Packing

D

Field

E

None of the above

Correct Answer: C

None.

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69.

Computer memory consists of

A

RAM

B

ROM

C

PROM

D

All of the above

E

None of the above

Correct Answer: D

RAM : Random-access memory is a form of computer data storage that stores data and machine code currently being used. A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory. ROM : ROM stands for Read Only Memory. The memory from which we can only read but cannot write on it. This type of memory is non-volatile. The information is stored permanently in such memories during manufacture. A ROM stores such instructions that are required to start a computer. PROM : A programmable read-only memory (PROM) or field programmable read-only memory (FPROM) or one-time programmable non-volatile memory (OTP NVM) is a form of digital memory where the setting of each bit is locked by a fuse or antifuse.

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70.

A memory that does not change its contents without external causes is known as

A

Dynamic memory

B

Static memory

C

RAM

D

EEPROM

E

None of the above

Correct Answer: B

A memory that does not change its contents without external causes is known as Static memory

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