Computer Science - Chapter 7 - Algorithm design and Problem Solving Test Questions and Answers
Fully Solved
Computer System - Answers A system that is able to take a set of inputs, process them and create a set
of outputs.
What is a Computer System made of? - Answers 1. Software
2. Data
3. Hardware
4. Communication
5. People
Program Development Life Cycle - Answers 1. Analysis
2. Design
3. Coding
4. Testing
Abstraction - Answers The process of ignoring the characteristics of problems that are not needed in
order to concentrate on those that are needed
Decomposition - Answers When a complex problem is sub divided into smaller and smaller parts which
can each be solved separately to solve the complex problem.
Top - Down Design - Answers A top-down approach is the breaking down of a system to gain insight into
the subsystems that make it up.
In a top-down approach an overview of the system is formulated, specifying but NOT DETAILING any
first-level subsystems.
Benefits of Top - Down Design - Answers 1. Easy to spot error at the initial stage of the design concept.
2. It reduces the development and testing time
3. For large computer system, several programmers can work independently to develop and test
different subsystems at the same time.
Structure Diagram - Answers A diagram is used to represent Top - Down Design in a hierarchical form.
Algorithm - Answers A set of step-by-step instructions for the computer to follow.
Flowchart - Answers A representation of the steps for a system or sub-system and the order that they
are executed. It shows how the system or sub-system will function.
Fully Solved
Computer System - Answers A system that is able to take a set of inputs, process them and create a set
of outputs.
What is a Computer System made of? - Answers 1. Software
2. Data
3. Hardware
4. Communication
5. People
Program Development Life Cycle - Answers 1. Analysis
2. Design
3. Coding
4. Testing
Abstraction - Answers The process of ignoring the characteristics of problems that are not needed in
order to concentrate on those that are needed
Decomposition - Answers When a complex problem is sub divided into smaller and smaller parts which
can each be solved separately to solve the complex problem.
Top - Down Design - Answers A top-down approach is the breaking down of a system to gain insight into
the subsystems that make it up.
In a top-down approach an overview of the system is formulated, specifying but NOT DETAILING any
first-level subsystems.
Benefits of Top - Down Design - Answers 1. Easy to spot error at the initial stage of the design concept.
2. It reduces the development and testing time
3. For large computer system, several programmers can work independently to develop and test
different subsystems at the same time.
Structure Diagram - Answers A diagram is used to represent Top - Down Design in a hierarchical form.
Algorithm - Answers A set of step-by-step instructions for the computer to follow.
Flowchart - Answers A representation of the steps for a system or sub-system and the order that they
are executed. It shows how the system or sub-system will function.
