Networking-Unit 2

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Server

A computer with large processing resources that stores all of the software that controls the network, as well as the software that can be shared with the computers attached to the network

Peer-to-Peer

A controller network that simply connects computers to each other or to a device such as a printer, but a server is not necessary.

Modem

A device that allows computers to communicate over telephone lines

Router

A device that transfers data from one network to another in an intelligent way.

Fax

A device that transmits a scanned picture or document over a telephone line

Hub

A device that uses its ports to connect devices (computers, printers, etc.) together

Workstation

A personal computer located on a network

Public internet access point

A public place that provides internet access to users or customers

Video Conferencing

Live conferences over the Internet that includes voice, video, and or text

LAN

Local Area Network; a geographic network that covers a relatively small geographic area such as a building or a small campus - no more than a mile distance between computers

MAN

Metropolitan Area Network; a geographic network that covers a larger geographic area such as a city or community; may be used to connect computers in libraries, government agencies, etc. together - no more than 30 miles in size

Know and understand the main disadvantages of networking.

1. Server problems stop an application from being available 2. Network problems can cause loss of data 3. Network problems can lead to loss of resources. 4. User work is dependent upon the network working. 5. System is open to hackers. 6. Decisions tend to become centralized. 7. Resources could be located too far from users. 8. Network management can become different. 9. Cabling can be expensive to install and replace. 10. A fault with the server will prevent the whole network from working. 11. Security measures are needed to restrict access to the network. 12. WANs are vulnerable to hackers and viruses.

Know and understand the main advantages of networking.

1. Speed 2. Cost 3. Security 4. Centralized Software Management 5. Resource Sharing 6. Flexible Access 7. E-mail 8. Workgroup Computing

switch

A computer networking device that connects network segments

File Transfer Protocol (FTP)

A communications method for transferring data between computers on the Internet

Network Interface Card

A card installed in a computer that allows you to connect to a network (can be Ethernet, telephone, or wireless)

Bluetooth

Allows electronic devices like cell phones and computers to exchange data over short distances using radio waves

E-Mail

An exchange of electronic messages between computers that are connected to the Internet or some other computer network

Node

Any device physically connected in a network (such as computer workstations, server, printers, etc.)

Host

Any part of the network that gives data out such as a server. (where clients access the data from)

Client

Any part of the network that receives data such as a workstation.

star, mesh, ring, and bus

Be familiar with the details of the four different types of topologies.

Computer Network

Computers connected together for the purpose of sharing information and resources

Protocol

How data is formatted, transmitted and received in a network.

Communications media

How nodes in a network are connected together (by cable, by fiber optics, radio waves, etc.)

Firewall

Part of a computer system that is designed to block unauthorized access

Bandwidth

The amount of data that can be transferred over a network in a certain amount of time

Wireless Adapter

The device that you must have on your computer in order to connect to a wireless network

Topology

The physical and logical design of a computer network; examples include mesh, bus, ring and star; the physical layout of the network devices and the cabling, and how all the components communicate with each other

WAN

Wide Area Network; largest type of network in terms of geographic area; largest WAN is the Internet

WLAN

Wireless Local Area Network

Wi-Fi

Wireless local area network that uses radio signals to transmit data


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