Appendix B Flashcards
enables transmission of data over public or private networks
Telecommunications system
a communication system created by linking two or more devices and establishing a standard methodology by which they can communcate
network
network designed to connect a group of computers in close proximity to each other
LAN
network that spans a large area such as a state, province, or country
WAN
a large computer network spanning a city
MAN
What are four things a network typically includes?
- Protocol
- Network Interface Card
- Cable
- Router
What is a network that relies on the computing network that relies on the computing power and bandwidth of the participants of the network rather than a centralized server
Peer to peer network
a computer designed to request information from a server
client
a computer dedicated to providing information in response to requests
server
a model for applications in which the bulk of back end processing , such as performing the physical search of a database, takes place on a server, while the front end processing is handled by the client
client/server network
occurs when a computer sending computer divides a message into a number of efficiently sized units of data called packets, each of which contains an address to the destination computer
packet switching
geometric arrangement of computers and other devices on the network
network topology
All devices connected to a central cable, called bus or backbone, Easy and inexpensive
Bus
All devices connected to a central device (hub), bottlenecks
Star
All devices connected to one another in the shape of a closed loop, so that each device is connected to the one on either side. Expensive and fast
Ring
Groups of star configured workstations connected to a linear bus backbone cable, combines bus and star
Hybrid
Devices are connected by signals between access points and wireless transmitters within a limited range
Wireless
a standard that specifies the format of data as well as the rules to be followed during transmission
protocol
capability of two or more computer systems to share data and resources, even though they are made by different manufacturers
interoperability
a physical and data layer technology for LAN networks, and is the most widely installed network for LAN
Ethernet
Why is Ethernet the most used LAN protocols?
Cheap
Easy
Flexible
Interoperability
transmission media manufactured so that signals are confined to a narrow path and behave predictable
wire media
type of cable composed of four or more copper wires twisted around each other
twisted wire cabling
cable that can carry a large range of signal frequencies without interference
coax
natural parts of earth’s environment that can be used a physical paths to carry electrical signals
wireless media
provides transport functions, ensuring the amount of data received = data sent
TCP
addressing and routing as a postmaster
IP
What are the four layers of TCP/IP
Network Interface
Internet
Transport
Aplication
serves as a window for users and application processes to access network services
application layer
places data packets on the network for transmission
Network Interface
handles end-to-end packet transportation
transport layer
Uses IP (puts header on packet)
Internet layer
Allows files with text, programs, graphics, etc to be downloaded or uploaded on the network
FTP (File Transfer Protocol)
TCP/IPs email system
Simple Mail Transfer Protocol
Allows terminal emulation which allows a personal computer or workstation to work as a terminal for a server
telnet protocol
allows web browsers and servers to send and receive web pages
Hypertext Transfer Protocol
Allows networked nodes to be managed from a single point
Simple Network Management Protocol
