Computer Science Exam for Year One

This is an Examination of Computer Science for Year One University students, it was done on 07, 07, 2025.

Instructions: This paper comprises two sections. Answer all questions for section A and choose any 3 questions in section B. Total Score: 50 Marks.

SECTION A:

Question 1: Multiple choice

1, What is the minimum number rows and columns that a word table can have?

A, Zero

B, 2 rows and 1 Column

C, 2 rows and 2 columns

D, 1 row and 1 column

2, To add two cells (A1 and A2) together you use the following formula:

A, =A1+A2

B, =Add (A1+A2)

C, =Together (A1:A2)

D, A1 plus A2

3, In H₂O the figure 2 is appearing lowered. Which effect has been applied?

A, Superscript

B, Lowered

C, Subscript

D, Laid down

4, To keep the modifications made on an existing document we use:

A, Cut, Paste

B, Save

C, Save As

D, Print

5, Which of the following is NOT a safe internet practice?

A, Using strong passwords with a mix of characters

B, Installing antivirus software

C, Verifying the identity of senders before sharing sensitive information

D, Clicking on unsolicited email links for quick responses

6, What is the primary advantage of cloud computing?

A, Access to data from local servers

B, Expensive hardware costs

C, On demand access to shared resources

D, Limited storage capacity

7, Choose the best answer for this binary arithmetic: 111111+100111

A, 1101100

B, 1100110

C, 0110011

D, None

8, Which keyboard shortcut is used to undo an action in Windows Explorers?

A, CTRL+C

B, CTRL+V

C, CTRL+Z

D, CTRL+A

9, How can you select multiple non-adjacent files in Window Explorer?

A, Click on each file while holding down shift

B, Click on each file while holding Ctrl

C, Click and drag a box around the files

D, Use the select All option

10, Which of the following is NOT a major search engine?

A, Google

B, Bing

C, Microsoft Word

D, Yahoo

Question 2: Discuss the use of the indicated elements of the Gmail interface in figure below.

Question 3: Define the difference between volatile and non-volatile memory. Give examples

SECTION B: Choose any 3 questions in this section

Question 4:

1, For each of the following devices, identify its type and briefly describe its function within a computer system.

I, Memory card

II, Keyboard

III, Monitor

IV, Scanner

2, State the difference between a web browser and web site

3, Give two (2) examples of web browsers and three (3) of web sites that you know.

Question 5: To work out the perimeter p and area A of a rectangle, we must know its length L and width W. To calculate the perimeter P of a rectangle of dimensions L and W. We can use one of the following 2 formulas:

P=2×L+2×W

P=2×(L+W)

To calculate the area A of a rectangle of dimensions L and W, we then apply the formula

A= L×W.

	A	B	C	D
1	Length	Width	Area	Perimeter
2	17	12	?	?
3	15	10	?	?
4	9	3	?	?
5	16	8	?	?
6	20	11	?	?

1, Write excel formulas to get Area for each rectangle in C2, C3, C4, C5 and C6 cells

2, Write excel formulas to get the perimeter for each rectangle in the D2, D3, D4, D5, and D6 cells.

Question 6:

1 Scenario: A teacher wants to teach 50 students remotely, requiring screen sharing and recording capabilities. Give and explain any two-computer applications that s/he can utilize.

2, Scenario: John receives an email claiming he has won a large sum of money. The email asks him to click a link and provide his bank details to claim prize. What should John do to protect his back account?

3, Briefly explain two disadvantages and two advantages of Artificial Intelligence (AI) tools in your learning journey.

Question 7:

1, How many bits of memory are required to upload 5 image files, each 8 MB in size, to a cloud service that measures storage in bits?

2, (F08)₁₆-11001110111₂ =(?)₁₀= ()₈

3, 101101+10100=?

4, (145)8=(?)₂

5, (1010110100111100)₂ to octal.

Credit: University Of Rwanda, For more equerries refer our disclaimer page here 

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