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Computer Science & Information Technology MCQs

Practice Computer Science & Information Technology multiple-choice questions for National University of Modern Languages competitive exams. Each question includes the correct answer and a short explanation, and past-paper questions are marked so you can revise both repeated and fresh material in one place.

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وضاحتSubstituting x = 4 into the function: 3(4) + 5 = 12 + 5 = 17.

x^2

1/2x

وضاحتUsing the power rule d/dx(x^n) = nx^(n-1), the derivative of x^2 is 2x^(2-1) = 2x.

وضاحتThe number of elements in the Cartesian product of two finite sets is the product of their sizes: 3 * 2 = 6.

وضاحتSince 2 raised to the power of 4 equals 16 (2*2*2*2 = 16), log2(16) is 4.

45 degrees

90 degrees

135 degrees

180 degrees

وضاحتThe sum of angles in a triangle is 180 degrees. 180 - (45 + 45) = 90.

-3

1/5

وضاحتThe equation is in slope-intercept form y = mx + c, where m is the slope.

x^2

x^9

x^24

وضاحتx^2 * x^3 = x^5. Then x^5 / x^4 = x^(5-4) = x.

1/2

1/3

1/6

3/6

وضاحتThere is one '3' on a six-sided die, so the probability is 1/6.

x + C

2x^2 + C

x^2 + C

x^2/2 + C

وضاحتThe power rule for integration states the integral of nx^(n-1) is x^n.

وضاحتSubtract 10 from both sides to get 2x = 10, then divide by 2 to get x = 5.

وضاحتArranging in order {1, 3, 5, 7, 9}, the middle value is 5.

وضاحت0.15 * 200 = 30.

30 degrees

45 degrees

60 degrees

90 degrees

وضاحتThe sine of 30 degrees is 0.5.

120

240

وضاحت5! = 5 × 4 × 3 × 2 × 1 = 120.

14cm

22cm

44cm

154cm

وضاحتCircumference = 2 × π × r = 2 × (22/7) × 7 = 44cm.

وضاحتDivide by 3: x - 4 = 5. Add 4: x = 9.

وضاحتSlope = (y2 - y1) / (x2 - x1) = (7 - 3) / (4 - 2) = 4 / 2 = 2.

Control Unit

ALU

Cache

وضاحتThe Arithmetic Logic Unit (ALU) is the part of the processor that performs mathematical and bitwise operations.

Queue

Stack

Linked List

Array

وضاحتA stack is a linear data structure that operates on the LIFO principle, where the last element added is the first one removed.

To compile high-level code

To manage hardware and software resources

To browse the internet

To design databases

وضاحتThe OS acts as an intermediary between the hardware and user applications, managing system resources like memory and processor time.

ROM

Hard Drive

RAM

Flash Drive

وضاحتRAM (Random Access Memory) requires power to maintain the stored information; it loses data when power is off.

Procedural

Object-Oriented

Functional

Logic-based

وضاحتJava is designed around classes and objects, making it a classic object-oriented language.

Structured Query Language

Standard Question Logic

System Query Library

Simple Query Layout

وضاحتSQL is the standard language used for managing and manipulating relational databases.

Total Connection Protocol

Transmission Control Protocol

Transfer Computation Port

Traffic Communication Packet

وضاحتTCP is a core protocol of the Internet Protocol Suite, responsible for reliable data transmission.

Physical Layer

Data Link Layer

Network Layer

Transport Layer

وضاحتThe Network Layer (Layer 3) is responsible for routing data via IP addresses.

Python

Assembly

C++

Java

وضاحتAssembly is considered a low-level language as it is very close to machine code.

To debug code line by line

To translate high-level code into machine code

To store data permanently

To manage hardware drivers

وضاحتCompilers convert human-readable source code into binary machine code that CPUs understand.

وضاحتHexadecimal is a base-16 number system using digits 0-9 and letters A-F.

وضاحتIn C/C++, the asterisk symbol (*) is used to declare and dereference pointer variables.

Motherboard

Hard Disk

Central Processing Unit

Power Supply

وضاحتThe CPU performs the majority of the processing and instructions inside the computer.

RAM

Cache

ROM

Registers

وضاحتRead-Only Memory (ROM) retains its data even when power is turned off, making it non-volatile.

Storing files

Connecting different networks

Compiling code

Displaying output

وضاحتRouters direct data packets between different networks to ensure information reaches its destination.

وضاحت1*2^3 + 0*2^2 + 1*2^1 + 1*2^0 = 8 + 0 + 2 + 1 = 11.

Microsoft Word

Web Browser

Operating System

Photo Editor

وضاحتSystem software manages the computer hardware and provides a platform for application software.

PSBOHF

PQBOHF

PSBOIF

PSBOHG

وضاحتEach letter is shifted by one position forward in the alphabet (A+1=B, P+1=Q, etc.). Applying this to ORANGE: O+1=P, R+1=S, A+1=B, N+1=O, G+1=H, E+1=F.

وضاحتThe differences between consecutive numbers are 4, 6, 8, 10. The next difference should be 12. 30 + 12 = 42.

Yes, it is valid

No, it is invalid

It depends on the context

Insufficient information

وضاحتThis is a classic syllogism. If the premises are true, the conclusion must follow logically from them.

Rex might bark

Rex barks

All barking animals are dogs

Rex is not a dog

وضاحتIf the premise is true that all dogs bark, then any specific dog (Rex) must bark.

وضاحتThe series represents squares of integers: 1^2, 2^2, 3^2, 4^2, 5^2, 6^2.

Apple

Orange

Broccoli

Banana

وضاحتApple, Orange, and Banana are fruits, while Broccoli is a vegetable.

4-15-7

3-14-6

4-16-8

5-15-7

وضاحتEach letter corresponds to its position in the alphabet: D=4, O=15, G=7.

Cannot be determined

وضاحتSince A > B and B > C, it follows that A > B > C; C is the shortest.

وضاحتAll numbers except 10 are powers of 2 (2^1, 2^2, 2^3, 2^4, 2^5).

8km

2km

sqrt(34) km

sqrt(16) km

وضاحتUsing the Pythagorean theorem: a^2 + b^2 = c^2. 5^2 + 3^2 = 25 + 9 = 34. The distance is sqrt(34).

Wednesday

Thursday

Friday

Saturday

وضاحتA week has 7 days. 10 days = 7 days + 3 days. Monday + 3 days = Thursday.

Valid

Invalid

Depends on the species

True

وضاحتEven if the premises are true, 'some' birds flying does not mean 'all' birds fly, so the conclusion is not logically forced.

وضاحتThe sequence moves backward two letters in the alphabet each time.

وضاحتThe pattern is skipping an increasing number of letters: +2, +3, +4, +5. J(10) + 5 = O(15).

SUMIC

ISUMC

USMIC

MSIUC

وضاحتThe first two letters are swapped, then the rest are reordered. MUSIC follows the pattern U-S-M-I-C.

Sister

Aunt

Mother

Cousin

وضاحتThe 'only daughter of my mother' is the woman herself. Therefore, the man's mother is the woman.

Frequently Asked Questions

Are these Computer Science & Information Technology MCQs free?

Yes. Every Computer Science & Information Technology MCQ on this page is free to practice, including the correct answer and explanation.

Do these include past-paper questions?

Yes — questions sourced from past papers are clearly marked with a "Past Paper" badge, alongside fresh practice questions.

Which exams do these Computer Science & Information Technology MCQs help with?

They are aimed at National University of Modern Languages and related Pakistani competitive exams that test Computer Science & Information Technology.

How should I practice subject-wise MCQs?

Attempt each question first, then reveal the answer and read the explanation. Short, focused sessions on one subject work better than long unstructured reading.