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 always improves execution speed automatically

B) It may produce incorrect or unexpected results

C) It converts code into HTML automatically

D) It removes the need for variables

2 / 9

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

A) Because it allows random execution of code

B) Because it eliminates the need for conditions

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 system works perfectly

B) The browser becomes faster

C) The program will always accept login

D) The program may crash or produce invalid logic

5 / 9

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

A) Taking input → processing data → displaying output

B) Running all code randomly

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 hides errors automatically

B) It makes error location easier by maintaining logical flow

C) It removes the need for testing

D) It prevents syntax errors completely

8 / 9

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

A) The final answer is likely incorrect

B) The result becomes more accurate

C) The program runs without variables

D) The browser updates itself

9 / 9

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

A) To ensure predictable and correct results every time

B) To make the code longer

C) To avoid using functions

D) To increase memory usage

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