Barani Institute of Information Technology12 Questions

Computer Science Basics MCQs

Practice Computer Science Basics multiple-choice questions for Barani Institute of Information Technology 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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Queue

Linked List

Stack

Binary Tree

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

The best-case execution time

The memory usage of a program

The upper bound of an algorithm's growth rate

The average hardware latency

ExplanationBig O notation is used to describe the limiting behavior or the worst-case scenario of a function as its input grows toward infinity.

Data Link

Network

Transport

Physical

ExplanationThe Network layer (Layer 3) handles packet routing and IP addressing.

To pause the execution of the loop

To exit the loop entirely

To skip the current iteration

To return an error

ExplanationThe break statement terminates the execution of the loop it is inside.

Linear search

Binary search

Bubble sort

Depth-First search

ExplanationBinary search divides the search interval in half each step, leading to O(log n).

To provide a user interface

To manage hardware and system resources

To compile source code

To host web applications

ExplanationThe kernel is the core component that bridges software and hardware.

SSD

HDD

RAM

ROM

ExplanationRAM (Random Access Memory) requires power to maintain the stored information.

Python

Assembly

Java

Ruby

ExplanationAssembly is very close to machine code and hardware, making it a low-level language.

Explanation5 is 101, 3 is 011. XOR result is 110, which is 6.

Standard Query Logic

Structured Query Language

Sequential Query Language

System Query Link

ExplanationSQL is the standard language for managing relational databases.

MySQL

PostgreSQL

MongoDB

Oracle

ExplanationMongoDB is a document-oriented database, classified as NoSQL.

HTTP

FTP

HTTPS

SMTP

ExplanationHTTPS adds a layer of SSL/TLS encryption to HTTP.

Frequently Asked Questions

Are these Computer Science Basics MCQs free?

Yes. Every Computer Science Basics 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 Basics MCQs help with?

They are aimed at Barani Institute of Information Technology and related Pakistani competitive exams that test Computer Science Basics.

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.