Computer Science Fundamentals Assessment

This video provides a comprehensive overview of OCR GCSE Computer Science Paper 1, covering topics such as CPU components, the fetch-execute cycle, storage types, binary data representation, network types, cybersecurity, operating systems, and legal issues. It aims to aid last-minute revision by explaining key concepts and their applications in computer science.

What is the primary function of the CPU in a computer?

• To store data permanently

• To carry out program instructions

• To provide power to the computer

• To connect to the internet

Which component of the CPU is responsible for performing arithmetic and logic operations?

• Arithmetic Logic Unit (ALU)

• Memory Address Register

• Cache

• Control Unit

What type of storage is used for long-term data retention and is non-volatile?

• RAM

• Cache

• ROM

• Secondary Storage

Which type of secondary storage is known for having no moving parts?

• Magnetic Storage

• Optical Storage

• Solid State Storage

• RAM

How many bits are there in a byte?

• 4

• 8

• 16

• 32

What is the main advantage of using Unicode over ASCII?

• Unicode is only for English characters

• Unicode is faster to process

• Unicode can represent more characters

• Unicode uses fewer bits per character

In a star topology, what is the central device that all other devices connect to?

• Hub

• Router

• Switch

• Access Point

What is a key characteristic of a peer-to-peer network?

• Centralized control

• All devices can act as both client and server

• Requires a dedicated server

• Limited to small networks

Which type of cyber attack involves overwhelming a server with traffic to make it unavailable?

• Denial of Service (DoS)

• Phishing

• Brute Force Attack

• SQL Injection

What is the purpose of encryption in cybersecurity?

• To prevent data from being intercepted

• To increase data transmission speed

• To make data unreadable without a key

• To delete unnecessary data