Arrays Questions

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91.

Which of the following bitwise operations will you use to set a particular bit to 1?

A

OR

B

AND

C

XOR

D

NOR

Correct Answer: A

None.

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92.

Which of the following bitwise operations will you use to set a particular bit to 0?

A

OR

B

AND

C

XOR

D

NAND

Correct Answer: B

None.

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93.

Which of the following bitwise operations will you use to toggle a particular bit?

A

OR

B

AND

C

XOR

D

NOT

Correct Answer: C

None.

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94.

Which of the following is an advantage of bit array?

A

Exploit bit level parallelism

B

Maximal use of data cache

C

Can be stored and manipulated in the register set for long periods of time

D

All of the mentioned

Correct Answer: D

None.

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95.

Identify the disadvantages of bit array.

A

Without compression, they might become sparse

B

Accessing individual bits is expensive

C

Compressing bit array to byte/word array, the machine also has to support byte/word addressing

D

All of the mentioned

Correct Answer: D

None.

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96.

What are some of the applications of bit arrays?

A

Used by the Linux kernel

B

For the allocation of memory pages

C

Bloom filter

D

All of the mentioned

Correct Answer: D

None.

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97.

Which class in Java can be used to represent bit array?

A

BitSet

B

BitVector

C

BitArray

D

BitStream

Correct Answer: A

None.

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98.

What is a dynamic array?

A

A variable size data structure

B

An array which is created at runtime

C

The memory to the array is allocated at runtime

D

An array which is reallocated everytime whenever new elements have to be added

Correct Answer: A

None.

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99.

What is meant by physical size in a dynamic array?

A

The size allocated to elements

B

The size extended to add new elements

C

The size of the underlying array at the back-end

D

The size visible to users

Correct Answer: C

None.

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100.

The number of items used by the dynamic array contents is its __________

A

Physical size

B

Capacity

C

Logical size

D

Random size

Correct Answer: C

None.

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