Across
- 2. a desktop computer or workstation that is capable of obtaining information and applications from a server.
- 3. AppleTalk was a proprietary suite of networking protocols developed by Apple Inc. for their Macintosh computers. AppleTalk includes a number of features that allow local area networks to be connected with no prior setup or the need for a centralized router or server of any sort.
- 6. server a device which controls access to separately stored files, as part of a multi-user system.
- 7. A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring.
- 9. a computer or computer program which manages access to a centralized resource or service in a network.
- 10. a range of frequencies within a given band, in particular that used for transmitting a signal.
- 13. a computer network in which the computers connected may be far apart, generally having a radius of more than 1 km.
- 14. In data communications, bits per second (abbreviated bps or bit/sec) is a common measure of data speed for computer modems and transmission carriers.
- 16. system that is designed primarily to support workstation, personal computer, and, in some instances, older terminal that are connected on a local area network
- 17. duplex allowing the transmission of signals in both directions but not simultaneously.
- 20. a high-capacity transmission technique using a wide range of frequencies, which enables a large number of messages to be communicated simultaneously.
- 22. A virtual private network (VPN) is a network that is constructed using public wires
- 23. protect (a network or system) from unauthorized access with a firewall.
- 26. a group or system of interconnected people or things.
- 27. network denoting a computer system in which a central server provides data to a number of networked workstations.
- 30. rate A number related to the speed of data transmission in a system. The rate indicates the number of electrical oscillations per second that occurs within a data transmission.
- 31. A system backup is the process of backing up the operating system, files and system-specific useful/essential data.
- 32. A virtual private network (VPN) is a network that is constructed using public wires — usually the Internet — to connect to a private network, such as a company's internal network.
- 34. cable communications a type of cable that has an inner conductor surrounded by a tubular insulating layer,
- 36. the official procedure or system of rules governing affairs of state or diplomatic occasions.
- 38. Decryption is the process of taking encoded or encrypted text or other data and converting it back into text that you or the computer can read and understand.
- 39. Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of canceling out electromagnetic interference
- 42. transmission Data transmission is the process of sending digital or analog data over a communication medium to one or more computing, network, communication or electronic devices
- 43. topology A bus network is a network topology in which nodes are directly connected to a common linear (or branched) half-duplex link called a bus.
- 44. area network A local area network (LAN) is a group of computers and associated devices that share a common communications line or wireless link to a server.
- 45. Encryption is the most effective way to achieve data security. To read an encrypted file
- 46. program that lets computers communicate within a local area network
- 47. a computer or computer program which manages access to a centralized resource or service in a network.
Down
- 1. a computer network in which the computers connected may be far apart, generally having a radius of more than 1 km.
- 4. is created when two or more PCs are connected and share resources without going through a separate server computer
- 5. the study of geometrical properties and spatial relations unaffected by the continuous change of shape or size of figures.
- 8. a point in a network or diagram at which lines or pathways intersect or branch.
- 11. a device used to connect two different networks, especially a connection to the Internet.
- 12. The NIC contains the electronic circuitry required to communicate using a wired connection
- 15. any auxiliary device such as a computer mouse or keyboard that connects to and works with the computer in some way. Other examples of peripherals are image scanners, tape drives, microphones, loudspeakers, webcams, and digital cameras.print-server is a device that connects printers to client computers over a network. It accepts print jobs from the computers and sends the jobs to the appropriate printers, queuing the jobs locally to accommodate the fact that work may arrive more quickly than the printer can actually handle.
- 18. server as the transmission of messages over communications networks
- 19. duplex a full-duplex device because both parties can talk at once. In contrast, a walkie-talkie is a half-duplex device because only one party can transmit at a time.
- 21. Baseband refers to the original frequency range of a transmission signal before it is converted, or modulated, to a different frequency range.
- 24. A proxy server is a dedicated computer or a software system running on a computer that acts as an intermediary between an endpoint device, such as a computer, and another server from which a user or client is requesting a service.
- 25. a person or thing that repeats something
- 28. A star topology is a topology for a Local Area Network (LAN) in which all nodes are individually connected to a central connection point, like a hub or a switch.
- 29. A hub is a common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.
- 33. a power tool with a shaped cutter, used in carpentry for making grooves for joints, decorative mouldings
- 35. a device that uses the photons in visible light or infrared ( IR ) beams,rather than electric current, to perform digital computations
- 37. Web servers are computers that deliver (serves up) Web pages. Every Web server has an IP address and possibly a domain name.
- 40. a device for making and breaking the connection in an electric circuit.
- 41. a structure carrying a road, path, railway, etc. across a river, road, or other obstacle.