Q. 1
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
One computer that is not considered a portable computer is:
💡
Step-by-Step Explanation & Concept Rationale
Minicomputers are large, multi-user systems that are stationary, unlike laptops.
Q. 2
Computer Aptitude Test
Difficulty: Hard
(1 Mark)
The accuracy of the floating-point numbers representable in two 16-bit words a computer is approximately
💡
Step-by-Step Explanation & Concept Rationale
Single precision (32 bits total) typically offers approximately 6 to 9 decimal digits of accuracy.
Q. 3
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
A dumb terminal has:
💡
Step-by-Step Explanation & Concept Rationale
Dumb terminals have no local processing capability; they only input/output data.
Q. 4
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
Plotter accuracy is measured in terms of repeatability and:
💡
Step-by-Step Explanation & Concept Rationale
Resolution defines the smallest increment of movement or dot density the plotter can achieve.
Q. 5
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
Daisy wheel printer is a type of:
💡
Step-by-Step Explanation & Concept Rationale
Like a typewriter, it strikes a ribbon against paper to form characters.
Q. 6
Computer Aptitude Test
Difficulty: Hard
(1 Mark)
The number of records contained within a block of data on magnetic tape is defined by the:
💡
Step-by-Step Explanation & Concept Rationale
Blocking factor refers to the number of logical records stored in a single physical block.
Q. 7
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
Serial access memories are useful in applications where:
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Step-by-Step Explanation & Concept Rationale
Serial access is ideal for sequential data processing where random jumping isn't needed.
Q. 8
Computer Aptitude Test
Difficulty: Hard
(1 Mark)
Which of the following memories must be refreshed many times per second?
💡
Step-by-Step Explanation & Concept Rationale
DRAM stores data in capacitors that leak charge and require periodic refreshing.
Q. 9
Computer Aptitude Test
Difficulty: Hard
(1 Mark)
The memory which is programmed at the time it is manufactured:
💡
Step-by-Step Explanation & Concept Rationale
Read-Only Memory (ROM) is hard-coded during the manufacturing process.
Q. 10
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
Which of the following memory medium is not used as main memory system?
💡
Step-by-Step Explanation & Concept Rationale
Tape is a secondary/sequential storage medium rather than primary/main memory.
Q. 11
Computer Aptitude Test
Difficulty: Hard
(1 Mark)
Registers, which are partially visible to users and used to hold conditional, are known as:
💡
Step-by-Step Explanation & Concept Rationale
Status registers (flags) indicate conditions like zero results or overflows.
Q. 12
Computer Aptitude Test
Difficulty: Hard
(1 Mark)
One of the main feature that distinguish microprocessors from micro-computers is:
💡
Step-by-Step Explanation & Concept Rationale
A microprocessor is just the CPU; a microcomputer includes I/O and memory.
Q. 13
Computer Aptitude Test
Difficulty: Hard
(1 Mark)
Which type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?
💡
Step-by-Step Explanation & Concept Rationale
Arbitration protocols manage which device has priority to use the shared system bus.
Q. 14
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
An integrated circuit is:
💡
Step-by-Step Explanation & Concept Rationale
An Integrated Circuit (IC) is a set of electronic circuits on one small flat piece of semiconductor material.
Q. 15
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
Most important advantage of an IC is its:
💡
Step-by-Step Explanation & Concept Rationale
ICs are highly reliable due to the lack of soldered connections between individual components.
Q. 16
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
A IBM System/38 represents the computer class of:
💡
Step-by-Step Explanation & Concept Rationale
The IBM System/38 was a minicomputer (midrange) system architecture.
Q. 17
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
CD-ROM stands for:
💡
Step-by-Step Explanation & Concept Rationale
Standard abbreviation for optical storage media.
Q. 18
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
ALU is:
💡
Step-by-Step Explanation & Concept Rationale
The CPU component that performs mathematical and logical operations.
Q. 19
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
VGA is:
💡
Step-by-Step Explanation & Concept Rationale
A standard for video displays introduced by IBM in 1987.
Q. 20
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
MSI stands for:
💡
Step-by-Step Explanation & Concept Rationale
MSI refers to ICs containing hundreds of transistors.
Q. 21
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
The capacity of 3.5 inch floppy disk is:
💡
Step-by-Step Explanation & Concept Rationale
High-density 3.5" floppy disks standardly hold 1.44 Megabytes.
Q. 22
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
WAN stands for:
💡
Step-by-Step Explanation & Concept Rationale
A network that spans a large geographical area (e.g., a country or continent).
Q. 23
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
MICR stands for:
💡
Step-by-Step Explanation & Concept Rationale
Technology used primarily by banks to process checks.
Q. 24
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
EBCDIC stands for:
💡
Step-by-Step Explanation & Concept Rationale
An 8-bit character encoding used primarily on IBM mainframe systems.
Q. 25
Computer Aptitude Test
Difficulty: Medium
(1 Mark)
BCD is:
💡
Step-by-Step Explanation & Concept Rationale
A class of binary encodings of decimal numbers where each digit is represented by a fixed number of bits.
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