Learning Unit1

3. Metcalfe Who designed the plan called Ethernet.
4. is connected to at least two or more networks, and can intelligently make decisions, as to what is the best way to route data over a network.
5. covers a large geographical area and normally consists of more than one smaller network. The largest WAN is the internet.
7. A specialized server that manages resources.
9. Connectivity is provided within a specific geographical area for example coffee shops where wireless internet connections are offered to the public.
11. is basically a set of two or more articles that are linked so the computers can share resources.
12. Network/the largest and best known network in the world.
14. Network Refers to a mainframe or minicomputer network that is not based on the IP (TCP/IP).
16. is an expansion card located within the system unit that connects the computer to a network.
17. is software or hardware that checks information coming from the Internet or a network, and then either blocks it or allows it to pass through to your computer.
19. Restores the clarity of a signal on a network. Signals degrade over large distances and therefore repeaters assist to ensure the correct signals reach the end point.
21. Is a pass through device to connect to nodes.
24. Is any device for example a printer that is connected in an IT network

1. plan to transport data from one computer to the next.
2. Is any computer that can be accessed over an IT network.
6. A person who manages a local area communications network (LAN) or wide area network (WAN) for an organization.
8. A node that requests and uses resources available from other nodes, a typical example is a users microcomputer.
10. networks/allows analogue and digital signals to be transported wirelessly
13. is a data communication network that connects personal computers within specific very limited geographical area – usually a single building.
15. Is a central node that coordinates the flow of data by sending messages directly between sender and a receiver nodes.
18. is a public high speed network capable of voice and data transmission within a range of about 80km.
20. Is a special node that shares resources with other nodes.
22. Topology uses a common backbone to connect all the network devices and the backbone is stopped at the end with a device called a terminator.
23. This term is typically used for interconnection of personal digital devices consumer electronics within a range of 10m from each other without the use of cables or wires.