ISP

Top level Domain

.com

Opera

1994

Google Chrome

2008

Boolean operators

AND, OR, NOT

Peer to peer network

All participating computers are more or less equal & Thea no central server; each computer connected to network is called host

Direct connections

Always "on"; don't need to establish connection & then disconnect when through; make direct connections to internet using DSL; require installed NIC in computer.

Server

Any computer that provides services to other computers (clients) that request them.

ADSL

Asymmetric DSL; type of DSL service used most at homes small bus

Gbps

Billion bits per sec

Bps

Bits per sec

Registered Domain/ domain name

Ccilearning

Web site

Collection of interconnected pages that contain info about company, person, product, service.

Client

Computer that requests service (web page) from another computer on network.

Routers

Connect networks to one another

Hub

Connects computer in network to exchange info; old tech & replaced by switches

Switch

Connects individual systems or multiple networks

Microsoft Internet Explorer

Developed 1995 & was one of first graphical user web browsers, Internet Explorer (I.E.)

Mozilla Firefox

Developed by Mozilla Corporation & foundation in 2004

DSL

Digital Subscriber Line or cable internet connection

DHCP

Dynamic Host Configuration Protocol; assign & configure automatically

Network

Ex. Public Switched Telephone Network (PSTN) - moves info by voice from coast to coast & around the world since 1915

FTP

File Transfer Protocol ; commonly used to transfer large files between users computer & special type of server called FTP server. Ex: ftp://aeneas.mit.edu

Web server

Hosts company's web site; use HTTP to send webpages to computers that request them

Protocol identifier

Http: Hypertext Transfer Protocol (HTTP)

HTML

Hypertext Markup Language; is special language that web page designers use to add text, hyperlinks, apps, video clips and sound to web pages

Client systems

Individual PCs

Server based network

Individual computers interact with one another through central server through which they are all connected

ISDN

Integrated Services Digital Network; digital telephone line

ISP

Internet Service Provider; purchase internet server, you pay for ISP; host web sites for their subscribers.

LAN

Local Area Network; group of computers are connected within relatively small area: home office .... Requires - NIC & transmission medium

MAC address

Media Access Control address; physical address or hardware address used for addressing only by devices within same LAN not outside LAN

Mbps

Million bits per sec

Internet

Network comprised of hardware connections

Bandwidth

Networks capacity for transferring data

NIC

Or Network Adapter Card; Network Interface Card; sends & receives data back & forth between computer & network; variety - some connect to network using wire called network cable & some connect to network wirelessly: sends & receives radio signals to & from workers access point somewhere in vicinity

Plug ins

Programs that extend capabilities of web browsers; associated with specific operating systems (windows & macintosh) & with specific browsers( Firefox or I.E.) ex. Adobe flash player, windows media player....

Downloading

Receiving info from server; visiting web site

Uploading

Sending info from computer to server; typing a URL into browsers address bar; enter name & password

Protocol

Set of rules that enable devices to communicate with one another in agreed upon manner

SDSL

Symmetric used by bus; doesn't allow to use phone at same time

Kbps

Thousand bits per sec

Transmission medium

To send & receive data, TM must exist; most common is copper wire in form of twisted pair cable, wireless is most common used

TCP/ IP

Transmission Control Protocol/ Internet Protocol - standard protocol for both local & wide area networking & required for internet access

URL

Uniform Resource Locator is a global address of docs on WWW. consists of 2 basic parts: protocol identifier & resource name - separated by : & two //

Dial up connections

Use standard analog telephone lines & device called modem, which is installed inside computer; must establish connection each time you want to access internet.

WAN

Wide Area Network; consists of two more LANS that cover Area & connected usinglines of public carrier Two more LANS = WAN LARGEST WAN is internet

WWW

World Wide Web is system of interlinked docs that are accessible on network called internet

Server name

Www.

Resource name

Www.-------.com

PSTN

public switched telephone network; provides telephone service around world & integral to wide area networking bc infrastructure a