Computer fundamental MCQ Questions and answers- Technical Aptitude

61

The most important advantage of a video disk is

A) Compactness B) Potential capacity C) Durability D) Cost effectiveness E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

The most important advantage of a video disk is potential capacity. Potential capacity is the big picture. This metric captures the maximum capacity of a submarine cable with every fiber pair lit with the maximum number of wavelengths at the highest bit rate.

62

The process of entering data into a storage location

A) adds to the contents of the location B) cause variation in its address number C) is known as a readout operation D) is destructive of previous contents E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

The process of entering data into a storage location is destructive of previous contents.

63

Time during which a job is processed by the computer is

A) Delay time B) Real time C) Execution time D) Down time E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

In computer science, run time, runtime or execution time is the time during which a program is running (executing), in contrast to other program lifecycle phases such as compile time, link time and load time.

64

Which of the following is used to insure the high quality of computer output?

A) computer output microfilm B) output controls C) voice output systems D) liquid crystal display E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

Output controls used to insure the high quality of computer output. Output controls ensure that computer programs process these transactions accurately and produce the results we expect to see.

65

The most common binary code in use today is the 8 bit ASCII code. What do the letters ASCII stand for?

A) American Standard Code for International Interchange B) American Standard Code for Information Interchange C) American Standard Code for Intelligence Interchange D) American Scientific Code for Information Interchange E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

ASCII to Extended ASCII characters (8-bit system) and ANSI Code: In the 1960s, a need for standardization led to ASCII, which is a 7-bit system. But later almost everything was done in an 8-bit system. With 7 bits, 128 numbers (0-127 in decimal notation) are available to code characters. A bit is a binary digit which can have either two values, on or off. Seven bits can have 2^7 or 128 possible unique values. ASCII was soon expanded to an 8-bit system that has 256 code points, 0-255 (8-bit corresponds to 2 ^ 8 ie. 256 possibilities). There are many variants of Extended ASCII characters (8-bit system) to cover regional characters and symbols. One example is the extended ASCII characters which includes various letters needed for writing languages of Western Europe and certain special characters.

Source : wikipedia.org

66

The software used to convert source program instructions to object instruction is known as

A) Compiler B) Assembler C) Interpreter D) Language processor E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

A language processor is a software program designed or used to perform tasks, such as processing program code to machine code. Language processors are found in languages such as Fortran and COBOL.

67

Binary numbers need more places for counting because:

A) 0's and 1's can be added in front of them B) 0's and 1's have to be properly placed C) They are always big numbers D) Binary base is small E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

Binary number. In mathematics and digital electronics, a binary number is a number expressed in the base-2 numeral system or binary numeral system, which uses only two symbols: typically 0 (zero) and 1 (one) and two. They also call it base-2. The base-2 numeral system is a positional notation with a radix of 2.

68

Backing storage is so named because it

A) is always kept at the back of the CPU B) is slow and backward C) backs up the computer D) lags behind the main memory E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

In information technology, a backup, or the process of backing up, refers to the copying into an archive file of computer data so it may be used to restore the original after a data loss event.

69

The ASCII code for the character J is:

A) 106 B) 105 C) 074 D) 075 E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

The ASCII code for the character J is 074.

Letter	ASCII Code	Binary
A	065	01000001
B	066	01000010
C	067	01000011
D	068	01000100
E	069	01000101
F	070	01000110
G	071	01000111
H	072	01001000
I	073	01001001
J	074	01001010
K	075	01001011
L	076	01001100
M	077	01001101
N	078	01001110
O	079	01001111
P	080	01010000
Q	081	01010001
R	082	01010010
S	083	01010011
T	084	01010100
U	085	01010101
V	086	01010110
W	087	01010111
X	088	01011000
Y	089	01011001
Z	090	01011010

70

Off-line operation is the operation of devices without the control of

A) Memory B) CPU C) ALU D) Control unit E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

Off-line operation is the operation of devices without the control of CPU.