A2 ICT OCR Network Flashcards

1. Asymmetric Digital Subscriber Line: copper cables, allows on, used for short distances (4km), download bandwidth higher than upload (4)
3. Local Area Network: is a set of computers that are within a defined area and are in close proximity to each other, able to have direct connections between them, connected only by cables that are owned by the user, able to share local peripherals. (3)
4. latency delay, cost of techonology, limited bandwidth (9, 7)
9. Internet Relay Chat: real time messaging, conversations can be recorded (3)
10. is a concentrator that connects lots of computers to the newtork through a single link, signals recieved on any port are broadcast to all the other ports. Hubs are active (repeat signals) or passive (split signals that pass through them) (3)

2. no need for fixed lines, can be moblile (9, 4)
3. outputs a focused electro magnet energy field in which all waves are at the same frequency and aligned in phase (5)
6. this is a device that routes information between networks. It can select teh best path as well as translate information from one network to another. (i.e. LAN to WAN) (6)
7. for creating a network (8)
8. high speed, can use telephone line while using ADSL, no extra wiring (4, 4)

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