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Computer Science

GCSE · OCR

QuestionsFlashcards

Identifying & Preventing Threats to Computer Systems & Networks
- Forms of Attack on a Network
  8
- Methods of Preventing a Network Attack
  10

Operating Systems & Utility Software
- The Purpose & Functionality of Operating Systems
  7
- The Purpose & Functionality of Utility Software
  6

Ethical, Legal, Cultural & Environmental Impact
- Impacts of Digital Technology on Wider Society
  7
- Legislation in Computer Science
  8

Boolean Logic Diagrams
- Boolean Logic Diagrams
  9
- Combining Boolean Operators
  7

Local Area Network Hardware Flashcards

All 6 cards in this deck

What task does a switch perform in a network?: It connects devices together and directs data only to the destination device, using a table of the MAC addresses of connected devices.
What task does a router perform?: It connects different networks together and directs data between them using IP addresses, e.g. connecting a LAN to the Internet.
What task does a wireless access point (WAP) perform?: It allows devices to connect to the network wirelessly, transmitting and receiving radio signals.
What task does a NIC (Network Interface Controller/Card) perform?: It allows a single device to connect to a network, giving it the hardware and MAC address needed to send and receive data.
What is meant by transmission media in a network?: The cables or channels that carry the data between devices, e.g. copper (Ethernet) cable or fibre optic cable.
What hardware is needed to connect several stand-alone computers into a wired LAN?: A NIC in each computer, a switch to connect them, and transmission media (cables) — plus a router if the LAN needs Internet access.