EmSAT Computer Science

Question 1

In EmSAT Computer Science, what is the binary representation of the decimal number 13?

Accepted Answer

1101

Answer

1011

Answer

1110

Answer

1001

Question 2

What is the output of the following pseudocode: x = 5; y = 3; PRINT x + y * 2?

Accepted Answer

11

Answer

16

Answer

13

Answer

8

Question 3

Which data structure operates on a Last-In, First-Out (LIFO) principle?

Accepted Answer

Stack

Answer

Queue

Answer

Linked list

Answer

Array

Question 4

What is the purpose of a loop in programming?

Accepted Answer

To repeat a block of code multiple times

Answer

To make decisions

Answer

To store data permanently

Answer

To connect to the internet

Question 5

What is an algorithm?

Accepted Answer

A step-by-step procedure for solving a problem or completing a task

Answer

A type of programming language

Answer

A computer hardware component

Answer

A type of database

Question 6

Which sorting algorithm has the best average-case time complexity?

Accepted Answer

Merge Sort - O(n log n)

Answer

Bubble Sort - O(n²)

Answer

Selection Sort - O(n²)

Answer

Insertion Sort - O(n²)