Unit 1 Key Terms Revision

Permanent memory storing essential instructions

• RAM

• ROM

• Cache

• Flash

Security system blocking unauthorized access.

• FIREWALL

• ANTIVIRUS

• ROUTER

• VPN

Two or more computers linked to share resources.

• Network

• Server

• Router

• Switch

Group of 8 bits.

• Bit

• Byte

• Nibble

• Word

Software used to perform specific tasks for users

• System Software

• Application Software

• Utility Software

• Firmware

Programs that perform maintenance tasks (e.g., antivirus).

• Utility Software

• Application Software

• System Software

• Malware Protection

Unique address identifying a device on a network

• IP Address

• MAC Address

• Subnet Mask

• Gateway

Brain of the computer; processes instructions

• CPU

• GPU

• RAM

• Hard Drive

Software managing hardware, software, and users

• OS

• Application Software

• Firmware

• Utility Software

UK law governing how personal data is handled.

• DPA

• GDPR

• PECR

• Data Protection Act 1998