NEB Class 11 Science Computer Science Question Paper 2078 Nepal

Q: Where can I find the NEB Class 11 Computer Science question paper 2078?

The full NEB Class 11 Computer Science 2078 (Model questions) question paper is available free on Kekkei. You can read every question online and attempt the paper under timed exam conditions.

Q: Does the Computer Science 2078 paper come with solutions?

Yes. Every question on this Computer Science past paper includes a step-by-step solution, plus instant AI feedback when you attempt it on Kekkei.

Q: How many marks is the NEB Class 11 Computer Science 2078 paper?

The NEB Class 11 Computer Science 2078 paper carries 50 full marks and is meant to be completed in 120 minutes, across 16 questions.

Q: Is practising this Computer Science past paper free?

Yes — reading and attempting this Computer Science past paper on Kekkei is completely free.

Question

1Multiple choice1 mark

Which one of the following is an input device?

a
speaker
b
printer
c
monitor
d
mouse

computer-fundamentalsinput-devices

Answer 1

Correct answer: d

mouse

A mouse is an input device (used to enter data/commands). Speaker, monitor and printer are output devices. Answer: (d) mouse.

Answer 2

Correct answer: c

Memory bus

The system buses are address bus, data bus and control bus. 'Memory bus' is not a standard bus-type classification here. Answer: (c) Memory bus.

Answer 3

Correct answer: A

AND gate

$F=x\cdot y$ is the logical AND operation, represented by the AND gate (option A in the figure).

Answer 4

Correct answer: a

first-come, first-served scheduling

First-come, first-served (FCFS) scheduling allocates the CPU to the process that requests it first. Answer: (a).

Answer 5

Correct answer: c

=

In Excel a formula must begin with the equals sign $=$ . Answer: (c) $=$ .

Answer 6

Correct answer: c

do-while

The do-while loop checks its condition at the end (after executing the body once), so it always executes at least once. Answer: (c) do-while.

Answer 7

Correct answer: c

The image is inserted with the <img src="..."> tag, where src gives the image file path. Answer: (c) <img src=...>.

Answer 8

Correct answer: d

JPEG

JPEG (JPG) uses lossy compression that gives small file sizes and is best suited to photographs. Answer: (d) JPEG.

Answer 9

Correct answer: b

Spyware

Spyware secretly monitors a user's activity and sends the information to a third party in the background. Answer: (b) Spyware.

Answer 10

Secondary memory types: (1) Magnetic storage — hard disk drive (HDD), magnetic tape, floppy disk (data stored as magnetised spots; non-volatile, large capacity). (2) Optical storage — CD, DVD, Blu-ray (data read/written by laser). (3) Solid-state/semiconductor storage — SSD, USB flash drive, memory cards (no moving parts, fast, uses flash memory). They are non-volatile, used for permanent/long-term storage, larger but slower than primary memory.

OR — Decimal to binary conversion: Repeatedly divide the decimal number by 2, recording the remainder each time; the binary number is the remainders read from bottom (last) to top (first). Example: convert 13 → 13÷2=6 r 1 6÷2=3 r 0 3÷2=1 r 1 1÷2=0 r 1 Reading remainders bottom-up: $13_{10}=1101_2$ .

Answer 11

Functions of an operating system: (1) Process management — creating, scheduling and terminating processes, CPU allocation; (2) Memory management — allocating/deallocating main memory, virtual memory; (3) File management — creating, organising, storing and accessing files and directories; (4) Device/I-O management — controlling input/output devices through device drivers; (5) Security and protection — user authentication, access control; (6) User interface — providing CLI/GUI; (7) Error detection and resource management; (8) acting as an interface between user/applications and hardware.

Answer 12

Types of CSS: (1) Inline CSS — written within an element using the style attribute (applies to a single element). (2) Internal (embedded) CSS — written inside a <style> tag in the <head> of the HTML page (applies to that one page). (3) External CSS — written in a separate .css file linked with <link> (applies to many pages, best for consistency and maintenance).

OR — Components of multimedia: (1) Text — characters/words conveying information; (2) Graphics/images — still pictures, drawings; (3) Audio/sound — music, narration, effects; (4) Video — moving images with sound; (5) Animation — sequence of images creating motion. (Combined with interactivity to form multimedia.)

Answer 13

while loop	do-while loop
Entry-controlled: condition checked before executing the body	Exit-controlled: condition checked after executing the body
Body may execute zero times (if condition false at first)	Body executes at least once
Syntax: `while(condition){...}`	Syntax: `do{...}while(condition);`
No semicolon after the loop	Requires a semicolon after `while(condition)`
Used when iterations depend on a condition tested first	Used when the body must run at least once

Answer 14

Prevention methods of cybercrime: use strong, unique passwords and change them regularly; install and update antivirus/anti-malware software and firewalls; keep operating systems and applications updated/patched; avoid clicking suspicious links/attachments (phishing); use secure (HTTPS) websites and encryption; take regular data backups; restrict access with authentication and authorisation; be cautious sharing personal information on social media; use legal/licensed software; and raise awareness and follow cyber laws.

Answer 15

Computer architecture (von Neumann): The main components are:

Input unit — feeds data/instructions into the computer.
CPU, comprising the Control Unit (CU) (directs and coordinates operations, fetch-decode-execute), the Arithmetic Logic Unit (ALU) (performs arithmetic and logical operations), and registers.
Memory unit — stores data, instructions and results (primary/main memory).
Output unit — presents processed results to the user. These are connected by the system bus (address, data, control). (Block diagram: Input → CPU(CU+ALU) ↔ Memory → Output.)

OR — C program for 4×3 matrix:

#include <stdio.h>
int main(){
    int a[4][3], i, j;
    printf("Enter 12 elements:\n");
    for(i=0;i<4;i++)
        for(j=0;j<3;j++)
            scanf("%d", &a[i][j]);
    printf("The matrix is:\n");
    for(i=0;i<4;i++){
        for(j=0;j<3;j++)
            printf("%d\t", a[i][j]);
        printf("\n");
    }
    return 0;
}

Answer 16

AND ( $Y=A\cdot B$ ): output 1 only when both inputs are 1.

OR ( $Y=A+B$ ): output 1 when at least one input is 1.

XOR ( $Y=A\oplus B$ ): output 1 when inputs are different.

XNOR ( $Y=\overline{A\oplus B}$ ): output 1 when inputs are the same.

Truth table:

A	B	AND	OR	XOR	XNOR
0	0	0	0	0	1
0	1	0	1	1	0
1	0	0	1	1	0
1	1	1	1	0	1

(Gate symbols: AND = D-shape; OR = curved-back shield; XOR = OR with extra curved line at input; XNOR = XOR with a bubble at output.)

Level	NEB Class 11
Stream	Science
Subject	Computer Science
Year	2078 BS
Exam session	Model questions
Full marks	50
Time allowed	120 minutes
Questions	16, all with step-by-step solutions

NEB Class 11 Science Computer Science Question Paper 2078 Nepal

Group A: Multiple Choice Questions

Group 'B'

Group 'C'

Frequently asked questions