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41 Cards in this Set

  • Front
  • Back
NIC
Network Interface Card
NOS
Network Operating System
Computer Network
1. Network Interface Card
2. Network Operating System
3. Dedicated server computer
4. Hubs
5. Routers
Key Digital Network Technologies
1. Client/Server Computing
2. Packet Switching
3. TCP/IP & connectivity
Client/Server
A distributed processing model in which some processing power is located within small, inexpensive client computers
-clients linked to one another
Packet Switching
- messages first broken down into small bundles of data called packets
-packets are sent along different communication paths as paths become available
- packets are reassembled once they reach their destination
Connectivity
Ability of computers & computer-based devices to communicate & share information
Protocol
Set of rules & procedures governing transmission of information in a network
Digital
discrete, binary waveform
Analog
continuous waveform, typically used for voice
Modem
converts from digital to analog
Types of Networks
LAN
CAN
MAN
WAN
Physical Transmission Media
-twisted wire
-coaxial cable
-fibre optic & optical networks
-wireless transmission media & devices
-transmission speed
What is the Internet?
links hundreds of thousands of individual networks all over the world (network of networks)
ISP
Internet Service Provider
DSL
Digital Subscriber Line
DNS
Domain Name System
IP Address
32 bit numeric address
IPv6
128 bit address
Internet 2
consortia of agencies working to provide a new robust & high- bandwidth version of the internet
E-mail
person to person messaging, document sharing
Usenet Newsgroups
discussion groups o electronic bulletin boards
Chatting & Instant Messaging
Interactive conversations
VoIP
Voice over Internet Protocol
Voice over Internet Protocol
delivers voice in digital form over the internet
Unified Communications
integrates all communications into one stream to allow user to switch back and forth
Intranet
an integral organizational network that provides access to data across the enterprise
Extranet
authorized visitors are given limited access to an internal intranet
Wireless Computer Networks
-bluetooth
-wifi
-wimax
-broadband cellular wireless & energizing wireless services
RFID
Radio Frequency Identification
Radio Frequency Identification
-use tiny tags with embedded microchips containing data about an item & location & an antenna
HTTP
Hypertext Transfer Protocol
Hypertext Transfer Protocol
Communication standard used for transferring web pages
URL
Uniform Resource Locators
Uniform Resource Locators
Addresses of Web Pages
Web Servers
software for locating & managing Web pages
Search Engines
major source of Interned advertising revenue via search engine marketing, using complex algorithms & page ranking techniques to locate results
Shopping Bots
use intelligent agent software fore searching Internet for shopping information
Web 2.0
blogs
wikis
rss
mashups
social software
Web 3.0
semantic web
Wireless Sensor Networks
networks of hundresds or thousands of interconnected wireless devices embedded into physical environment to provide measurements of many points over large spaces