Computer 9th Chap 3 : Topic 4.2 - Maryam Publications

Computer Chapter 3 : Topic 4.2

How the sequence of instructions affects the result

1 / 9

How does changing the order of instructions in an algorithm most directly affect the final output of a JavaScript program?

A) It converts code into HTML automatically

B) It may produce incorrect or unexpected results

C) It removes the need for variables

D) It always improves execution speed automatically

2 / 9

Why is sequence considered the most fundamental structure in algorithm design for JavaScript programs?

A) Because it eliminates the need for conditions

B) Because it allows random execution of code

C) Because it replaces selection and repetition

D) Because it ensures instructions run in a logical step-by-step order

3 / 9

What is the most likely outcome if a calculation step is placed before required input in an algorithm?

A) The browser updates automatically

B) The program runs faster

C) The loop runs infinitely

D) The result becomes logically incorrect or undefined

4 / 9

In a login system algorithm, what could happen if password checking is executed before user input is taken?

A) The program will always accept login

B) The program may crash or produce invalid logic

C) The browser becomes faster

D) The system works perfectly

5 / 9

Which scenario best demonstrates the importance of correct instruction sequence in a JavaScript algorithm?

A) Running all code randomly

B) Taking input → processing data → displaying output

C) Declaring variables after using them in calculations

D) Printing results before performing calculations

6 / 9

What happens when output instructions are placed before processing steps in a program?

A) The program ignores all variables

B) The loop automatically activates

C) The displayed result may be incomplete or incorrect

D) The output becomes accurate

7 / 9

How does proper sequencing improve debugging in JavaScript programs?

A) It makes error location easier by maintaining logical flow

B) It removes the need for testing

C) It hides errors automatically

D) It prevents syntax errors completely

8 / 9

What is the main consequence of reversing steps in a mathematical algorithm program?

A) The program runs without variables

B) The result becomes more accurate

C) The browser updates itself

D) The final answer is likely incorrect

9 / 9

Why must a JavaScript algorithm follow a fixed sequence of instructions rather than random execution?

A) To avoid using functions

B) To increase memory usage

C) To ensure predictable and correct results every time

D) To make the code longer

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