Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
CIW~Exam
Lesson 3 WHAT IS A NETWORK
| Term | Definition |
|---|---|
| • Network | – two or more computers connected together – so they can communicate with each other – share resources (software: MS Office applications or hardware: printers, fax machines, storage devices) – exchange information (transfer data from one computer to |
| • Client/server model | – most popular form of network. individual computers and devices interact with one another through a central server |
| – Client | – an individual computer connected to a network |
| – Server | – a computer that manages network resources |
| – Node | – an individual computer or other device connected to a network |
| • Local area network (LAN) | – a group of computers connected in a small geographic area (campus, home, business) – The organization owns & manages all network components |
| • Wide area network (WAN) | – a collection LANs that are linked together. – span a wide geographic area – The organization leases some of the components needed connect those networks together (high-speed telephone lines or wireless transmission equipment) |
| • Internet | – a vast network of LANs and WANs that electronically connects millions of people worldwide |
| • World Wide Web | – a set of software programs that enables users to access resources on the Internet via hypertext documents, or Web pages |
| • Web page | – a document created in HTML containing hypertext links that, when clicked, enable users to access a different location or document |
| • Web site | – a collection of related Web pages |
| • Web browser | – a software application that enables users to easily access, view and navigate Web pages on the Internet |
| – Protocol | – (rules for how we communicate and interact on the internet) an agreed-upon format for transmitting data between two devices |
| – Packet | a fixed piece of information sent across a network |
| – TCP/IP | – software that makes Internet communication possible |
| • Internet Service Provider (ISP) | – an organization that provides access to the Internet |
| • Computers access information from the Internet as follows: | – You request data from an Internet server – The request is divided into packets – The packets are routed from your LAN to the Internet backbone – The packets are routed from the Internet backbone to the destination server – The destination server |
| • Six elements are required to connect to the Internet: | – Computer – PC, smartphone, tablet, etc. – Operating system – Windows, Apple, Linux/Unix – TCP/IP – protocol to communicate w/ Internet – Client software – Web Browser, mobile app, e-mail application – Internet connection - direct through an ISP |
| • Internet Service Provider (ISP) | – an organization that provides access to the Internet |
| • Dial-up Internet connections: | – Standard telephone lines and analog modem (rural areas) |
| • Direct Internet connections: | – High-speed data links , Wireless connections, T and E carriers (big companies, international), LAN connections (local/ regional businesses), Cable modems (Brighthouse), Digital Subscriber Line (DSL) , 4G mobile hotspot (cell phones) |
| • Internet Protocol version 4 (IPv4) | – supports 32-bit dotted quad IP address format – Most widely used version of IP – Approximately 4 billion possible IP addresses |
| • Internet Protocol version 6 (IPv6) | – supports 128-bit hexadecimal address format |
| • Hypertext Transfer Protocol (HTTP) | – used to transfer Web pages from a Web server to a Web client (Web browser) |
| • Hypertext Transfer Protocol Secure (HTTPS) | – used to access a secure Web server |
| • File Transfer Protocol (FTP) | – used to transfer files between computers on the Internet |
| – Simple Mail Transfer Protocol (SMTP) | – used to transfer e-mail messages to others with an outgoing mail server |
| – Post Office Protocol (POP) | – used to receive e-mail from an incoming mail server |
| – Internet Message Access Protocol (IMAP) | – used to receive e-mail from an incoming mail server |
| – Network News Transfer Protocol (NNTP) | – used by news servers to exchange newsgroup articles |
| • Newsgroup | – a group of messages about a particular subject that is posted to a central Internet site (news server) and redistributed through Usenet |
| • Usenet | – a public-access worldwide network |
| • Domain Name System (DNS) | – resolves IP addresses into easily recognizable names |
| • com | – commercial site |
| • CIWcertified | – registered company domain name |
| • www | – Web server name at company |
| • com | – commercial or company sites |
| • edu | educational institutions, typically universities |
| • org | – organizations; originally clubs, associations and non-profit groups; currently, various types of organizations |
| • mil | – U.S. military |
| • gov | – U.S. civilian government |
| • net | – network sites, including ISPs |
| • int | – international organizations (rarely used) |
| • Domain name server | – a server on the Internet that resolves domain names into IP addresses |
| • Reverse DNS – | – the process of resolving IP addresses into domain names |
| • Virtual domain | – a hosting service that allows a company to host its domain name on a third-party ISP server |
| • Shared domain | – a hosting service that allows multiple entities to share portions of the same domain name |
| • Crowdsourcing | – outsourcing a task to an undefined group of people or community to obtain and analyze large amounts of data |
| • Cloud computing | – a paradigm in which users access software and services remotely over the Internet |
| – Software as a Service (SaaS) | – another name for cloud computing |
| – Grid computing – | – a cluster of multiple, remote systems that are used to create a single solution |
| – Advantages to cloud computing: | • Flexibility • Scalability • Cost reduction |
Created by:
spearaylall
Popular ACT sets