Computer Science MCQS

Computer Science MCQ with detailed explanations for students & freshers preparing for entrance exams, various tests, interviews, competitive exams like GATE exam, interview, competitive examination and entrance exam.

Table of Content

By default, the page size of a new document is ___ inches by ___ inches.

A. (A) 8.5 and 11
B. (B) 7.5 and 12
C. (C) 7.5 and 11.5
D. (D) None of these
Correct answer is: A. (A) 8.5 and 11
The default page size in MS Word is 8.5 inches by 11 inches (Letter size).

To what temporary area can you store text or other data and later paste them to another location?

A. (A) Clipboard
B. (B) ROM
C. (C) Hard Disk
D. (D) None of these
Correct answer is: A. (A) Clipboard
The clipboard temporarily stores data that can be copied or cut and later pasted.

Which country is known for developing the first computer mouse?

A. (A) USA
B. (B) Japan
C. (C) Germany
D. (D) France
Correct answer is: A. (A) USA
The first computer mouse was developed by Douglas Engelbart in the USA in 1964.

In Excel, Columns are labeled as:

A. (A) A, B, C
B. (B) A1, A2, A3
C. (C) $A$1, $B$2
D. (D) 1, 2, 3
Correct answer is: A. (A) A, B, C
In Excel, columns are labeled alphabetically, e.g., A, B, C.

In which year did India gain independence?

A. (A) 1947
B. (B) 1950
C. (C) 1960
D. (D) 1952
Correct answer is: A. (A) 1947
India gained independence from British rule on August 15, 1947.

Which key is used for duplicate the selected text so that it can be used in another place?

A. (A) Ctrl+O
B. (B) Ctrl+D
C. (C) Ctrl+I
D. (D) Ctrl+I
Correct answer is: D. (D) Ctrl+I
In most applications, Ctrl+D is used to duplicate the selected text. However, in Excel, Ctrl+D duplicates the content of the cell above.

In the context of technology, what does “URL” stand for?

A. (A) Uniform Resource Locator
B. (B) Universal Resource Locator
C. (C) Unique Resource Locator
D. (D) Uniform Resource Link
Correct answer is: A. (A) Uniform Resource Locator
URL is an address used to access resources on the internet.

ABC computer is used for:

A. (A) Specific purpose computer
B. (B) General purpose computer
C. (C) Both A & B
D. (D) None of these
Correct answer is: B. (B) General purpose computer
The Atanasoff-Berry Computer (ABC) is considered the first general-purpose electronic computer.

The main component of a computer system that performs calculations and makes decisions is:

A. (A) CPU
B. (B) RAM
C. (C) Monitor
D. (D) Hard Drive
Correct answer is: A. (A) CPU
The CPU (Central Processing Unit) performs all calculations and makes decisions based on the data.

__ is defined as the process of generating analysis and designing documents?

A. a) Re-engineering
B. b) Reverse engineering
C. c) Software re-engineering
D. d) Science and engineering
Correct answer is: B. b) Reverse engineering
Reverse engineering involves analyzing an existing system to understand its components, architecture, and functionality. This process is often used to create documentation, such as analysis and design documents, which can be used for various purposes like maintenance, improvement, or creating a new system.

Differentiating from Other Options:

Re-engineering is a broader term that involves modifying an existing system to improve its quality, performance, or maintainability.

Software re-engineering is a specific type of re-engineering focused on software systems.

Science and engineering are general fields of study and not specific to the process of analyzing an existing system.

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