iGCSE Computer Science Revision Questions

Which of the following is a primary function of the CPU?

• Storing data

• Displaying output

• Executing instructions

• Transmitting data

Which of the following is a characteristic of RAM (Random Access Memory)?

• Non-volatile storage

• Volatile storage

• Permanent storage

• None of the above

What is the purpose of a virtual machine?

• To emulate the hardware of a computer

• To provide a user interface for the computer

• To improve the performance of the computer

• To ensure data security

What is the purpose of data abstraction in object-oriented programming?

• To hide the implementation details of an object

• To provide a user interface for the object

• To improve the performance of the program

• To ensure data security

What is the purpose of error-checking in data communication?

• To detect and correct errors in transmitted data

• To improve the speed of data transmission

• To encrypt the data being transmitted

• To provide a user interface

What is the purpose of a software development team?

• To collaborate on the development of software

• To optimize the performance of the software

• To provide a user interface for the software

• To ensure data security

What is the purpose of a software design document?

• To describe the architecture and functionality of the software

• To optimize the performance of the software

• To provide a user interface for the software

• To ensure data security

What is the purpose of a database index?

• To improve the performance of data retrieval

• To provide a user interface for the database

• To ensure data security

• To manage the schema of the database

What is the purpose of a software version control system?

• To manage changes to the software codebase

• To optimize the performance of the software

• To provide a user interface for the software

• To ensure data security

What is the purpose of a software development environment?

• To provide tools and resources for developing software

• To optimize the performance of the software

• To provide a user interface for the software

• To ensure data security