MCQs — Computational Thinking & Algorithms

A problem exists when there is a gap between where we are and where we want to be.

A problem statement clearly describes what needs to be solved, before any solution is planned.

A clear statement removes confusion and keeps everyone working on the same problem.

It states who is affected, what the difficulty is and why it happens; the others are vague.

The difficulty described is the slow, mistake-prone hand calculation of sales.

Comparing the current situation with the desired one shows what needs to be solved.

Constraints are the limits within which a solution has to be developed.

Computers are suited to repetitive, rule-based calculations on a large amount of data; the others are personal choices.

You must know exactly what problem you are solving before you can plan or build anything.

Debugging means locating and correcting errors so the solution works as intended.

Analysis clarifies what data is given, what result is needed and what conditions apply.

In the design stage, the solution is planned using tools such as algorithms and flowcharts.

Testing compares the actual results of the solution with the expected results.

Documentation records how the solution works, so it can be understood and updated later.

The problem is defined and analysed first, then a solution is designed, implemented and tested.

Writing the design as code in a programming language is the implementation stage.

IPO stands for Input, Process, Output, the three parts of a simple solution.

Input is the data given to the system to work on.

Output is the result the system produces after processing the input.

Processing means carrying out operations on the input to obtain the output.