ch.7- Internet ,web, Intranets, extranets Flashcards Preview

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Flashcards in ch.7- Internet ,web, Intranets, extranets Deck (51):
1

Internet

• Internet is worlds largest network
• Internet is a collection of interconnected networks freely exchanging information using common set of protocols

2

ARPANET

ancestor of internet
-started by U.S dept. of defense as experiment in reliable networking and a means to link military research contractors

3

ARPA
milnet

○ ARPA= Advanced Research Projects Agency
-
-MILNET- All military sites

4

Internet Protocol (IP)

-communication standard,
- allows computers to route communications traffic from one network to another

5

network service provider

large telecom companies that agree to connect their networks

6

Backbone

internet high speed long distance communications link

7

Transmission Control Protocol (TCP)

transport layer protocol (TCP) that most internet applications use with IP

8

IP Address

assigned to each computer on internet, identifies computer on internet
- ○ 64 bit or 128 bit number
○ Divided into 4 bytes and translated to decimal

9

domain name system (DNS)

created b/c ppl prefer words than numbers
§ Mapped to IP address

10

Uniform Resource locator (URL)

web address specifies exact location of web page using letters + words
○ maps to IP addr + location on host.

11

HTTP (Hypertext Transport protocol)

Primary method for interacting with internet
○ specifies access method

12

Internet Corporation for Assigned Names and Numbers (ICANN)

responsible for managing IP addr and internet domain names
○ Primary concern: that each domain name represents only 1 individual or entity

13

ACCREDITED DOMAIN NAME REGISTRARS

handle the business of registering domain names
○ I.e godaddy.com

14

Accessing The internet

1. 1. Connect via LAN server:


2. Connect thru internet service providers:

15

1. Connect via LAN SERVER

○ used by businesses and organizations that manage local area network (LAN)
○ All users on LAN provided access to internet

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2. Connect thru internet service providers:

○ Internet Service Provider (ISP): org that provides internet to ppl
§ i.e universities that make internet available to students/staff, small internet businesses, major telecommunications companies (i.e rogers, bell, telus)

17

Dial up Internet connection

○ least expensive but slowest connection
§ Uses modem and standard phone line to "dial up" and connect
§ Also ties up phone line during use

18

Cloud computing

software and storage provided as internet service, accessed with web browser
○ Often referred to as Software as a Service (SaaS)
○ Vendors that provide the software are Application service providers (ASP's)

19

Public Cloud

service providers that offer cloud to public

20

Private cloud

cloud used within a private network (i.e a business

21

Hybrid Cloud

combine public and private cloud

22

Virtual Private Network

secure and private connection over the internet

23

Community cloud

several businesses share cloud computing resources

24

INTERNET VS WEB

Internet is infrastructure the Web exists on.---so WEB exists on INTERNET

25

WEB

-server/client software,
-HTTP protocol,
-standards,
-markup languages
all combined to deliver information and services on internet

26

Website

collection of pages on ONE topic, accessed under ONE domain

27

Web plug ins

provide additional features to standard websites

28

hyperlink

highlighted text/graphics in web doc
○ When clicked opens new web page

29

Web browser

web client software to view web pages
-- internet explorer, firefox, , etc…

30

Hypertext Markup language (HTML)

standard page description language
• Works with another markup language called CSS

31

HTML tags

codes that tell web browser how to format text (heading, lis, body text, etc..) and if images , sound ,etc s/b inserted.

32

Cascading style sheet (CSS)

markup language for defining visual design of web pages

33

Extensible markup language (XML)

markup language to transport and store data on web
• Allows coder to create custom tags that define data

34

Asynchronous JavaScript and XML (AJAX):

programming platform, evolved from javascript
- • Defines rich internet applications (RIA's).
• combines HTML, CSS, XML, JavaScript, and other web technologies to create interactive web applications

35

JAVA

object oriented programming language
○ based on C++ programming language
○ Allows applets to be embedded within HTML doc.

36

hypertext preprocessor

open source programming language
• popular for server side application development

37

• 3 other components used in web services applciations:
-SOAP
-WSDL
-UDDI

• SOAP (Simple Object Access Protocol): specification that defines the XML format for msg
• WSDL (Web services Description Language): a way for web service application to describe its interfaces in enough detail to allow user to build a client (user computer) application to talk to it

UDDI (Universal Discovery Description and Intergration): ??

38

wEB APPLICATION FRAMEWORK

web development software,
• provides foundational code/framework for professional, interactive website,
• allows developers to customize the code to specific needs

39

Distance education

classes over the web with no physical class meetings

40

search engine

find information on web by specifying words key to a topic ( keywords. )

41

meta search engine

run keyword searches on several search engines at same time.

42

Search engine optimization (SEO)

driving traffic to website
• using techniques that improve the sites ranking in search results

43

Web analytics software

study detailed statistics about visitors to sites

44

Crowd sourcing

combined effort of many individuals to accomplish same task

45

web portal

web page,
• useful info and links,
• acts as a entry point to web

Usually includes search engine,

46

Horizontal portal

cover wide range of topics

47

Vertical portal

provide info and links for special interest groups (narrow, specific)

48

Telepresence

less convenient since its synchronous
• Involves lots of equipment and everyone must meet same time

49

email

useful form of internet communication that supports text communication, HTML content, and sharing documents as email attachments

50

Post office protocol

used to trf msgs from email servers to PC

51

Internet mesage access protocol (IMAP)

allows you to view email using outlook or other email software, without downloading/storing messages locally