Networking-Unit 2
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
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
