+ All Categories
Home > Documents > Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating...

Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating...

Date post: 25-Dec-2015
Category:
Upload: imogene-joseph
View: 223 times
Download: 7 times
Share this document with a friend
Popular Tags:
39
Internet Services - World Wide Web - E-mail - Conferencing and Newsgroups - File Transfer & Updating - Chat/Instant Messaging
Transcript
Page 1: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Internet Services- World Wide Web- E-mail- Conferencing and Newsgroups- File Transfer & Updating- Chat/Instant Messaging

Page 2: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Intranet- Looks like the internet – web pages

which open up on a browser, - A LAN or WAN used by schools,

businesses etc to communicate internal information.

Page 3: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Internet UnitDefine the terms

- ISP- Browser- Search Engine

Page 4: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

ProtocolsDefinition

A set of formalized rules thatdescribe how data is transmittedover a network.

Page 5: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Internet transmission

protocols • TCP/IP - Transmission Control

Protocol/Internet Protocol • A recognised set of protocols transmission

protocol for all Internet transmission.• TCP divides a message into blocks of data,

called packets

Page 6: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

TCP/IP• TCP divides a message into blocks

of data called packets • A router then forwards these

packets to a destination device Message

Packet 1 Packet 2 Packet 3 Packet 4

Page 7: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

TCP/IP Advantages• Industrial Standard• Routable – can be sent through

many different types of routers• Robust – used for many years• Scalable – can be used small &

large networks.

Page 8: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Internet protocols IP provides routing devices – specialelectronic switches – with the source anddestination web addresses, which are usedto connect the Internet user with the webserver. The routing device then forwardsthe packets to the destination address.

Page 9: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

IP Addresses- The internet connects millions of

different network hardware hosts- Each host – computer, router, printer is

identified by a unique IP address

- http://www.hostip.info/ This website tells you the IP address of your own computer

Page 10: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

IP Addresses

- Using http://www.hostip.info/ find out where the following sites are

- 160.60.160.60- 160.80.160.60- 255.255.255.255- 216.27.61.137- 80.176.88.213- 84.69.1.207

Now find out your own IP address http://whatismyipaddress.com/

Page 11: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

IP Addresses

IP Address URL

72.14.253.104

194.154.164.90

69.147.114.210

72.21.210.11

193.95.148.90

66.230.200.100

Page 12: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Questions 1. Complete the words • T_ _ _ _ _ _ _ _ _ _ _ Control P_ _ _ _ _ _ _• I_ _ _ _ _ _ _ P _ _ _ _ _ _ _2. What is a Protocol?3. In addition to the www name the four other internet services4. What is an intranet?5. What is an IP address and what does it look

like?

Page 13: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

IP Addresses The Internet connects millions of different network hardware components together (host).

Each host – computer, router, printer, etc – is identified by a unique Internet Protocol Address, or IP address. An IP address appears as a dotted decimal number.

Page 14: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Internet Service Protocols

Page 15: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

1. HTTP (HyperText Transfer Protocol)

• HTTP is the service protocol that allows users to receive information from the World Wide Web.

• HTTP protocol identifies and downloads web page resources

Page 16: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

HTML tags HyperText Markup Language - a setof codes and script that allows webpages to be formatted and designed

Quiz

Page 17: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

2. File Transfer ProtocolFile Transfer Protocol allows an

Internet user to send (or receive) copies of files from or to different computer systems or networks

Page 18: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

3. POP/SMTPSimple Mail Transfer Protocol is

usedto transfer e-mail between computersystems. - Incoming e-mail is stored on the ISP’s

server.- It deals with outgoing emails

Page 19: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

3. POP• Post Office Protocol is also used to

transfer e-mails between computer systems. POP offers more facilities than SMTP and allows automatic download of e-mails.

• POP is the receiving system for most Internet-based e-mail systems (i.e. your incoming mail).

Page 20: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Questions 2• What does POP stand for? Post Office Protocol• What is a protocol? Agreement or set of rules

involving 2 or more parties• What does HTTP stand for and where would

you see it? • Hypertext transfer protocol• What is a NAP? Network Access Point• What does IP stand for? Internet Protocol

Page 21: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

HTML Questions1. What does the <br> tag do?2. What does the <body> tag do?3. What does </html> do?4. What does <td> do5. What does <href do?

Page 22: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

AnchorsHTML code (tag) that allows a piece oftext or a graphic on a web page tobecome interactive.Can take you to

- another place on the same web page- another website

Page 23: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

HyperlinkHTML attribute of an anchor. The

codebehind it.

Page 24: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

What do you need for Internet Access

Client Side - • Computer• ISP• Browser• Modem/Router• Phone line

Page 25: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

TYPICAL HOME INTERNET CONNECTION

TYPICAL OFFICE INTERNET CONNECTION

Page 26: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

TaskGo to webopedia.com and get a one

line definition for the following- ISP- Browser- Modem- Router

Page 27: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Recent Developments

- Broadband- Wireless Technology- Mobile Internet

Page 28: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Broadband TaskSearch the internet for four ISPproviders and for each one find out theMb and cost and complete the tableBelow.

Name of Provider Cost (£) Mb

http://www.broadbandchecker.co.uk/?GTSE=goog&GTKW=broadband

Page 29: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Internet ServicesDefine the following

Web PageWeb SiteWorld Wide WebThe Internet

Page 30: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Business Web ServicesE-Commerce*E-BankingE-Marketplace – B2BE-SalesE-Government*

Go to webopedia.com and get a one line definition of the starred ones

Page 31: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Personal Web ServicesUse your internet mind map to

come upwith a list of personal web services. Chat rooms news

Searching blogs

Email planning

Online booking –holiday education

Online shopping auctions

Downloading charity

TV online conferencing

Gambling

Page 32: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

E-MailMailbox - Attachments –

Client Based E-Mail uses - POP- SMTP All users have a separate account.

Page 33: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

E-MailWeb Based E-Mail

- Examples include Hotmail.- Uses HTTP protocol.- You must be connected to the

www to read and send e-mail.

Page 34: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Conferencing and Newsgroups

1. Search newsgroups on Google2. Go to newsgroups3. Browse all categories4. Choose Europe5. Choose UK6. Now look through the newsgroups

and choose one that interests you.

Page 35: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

FTP software• Used to upload and download files

Page 36: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

How a web address is made upHow a web address is made up

http://www.computing.com/int2/car.html

Page is to be retrieved using hypertext transfer protocol

Name of the Web Server that has the page

The Directory where the page can be found on the server

The Name of the web page. Often end in html or htm

Page 37: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Network Strategy• An organisation needs a network strategy

initially to plan how to set up the network in general to manage effectively its distribution of data and information to assist its decision-making and general operation. The network strategy should be based on sound fundamentals so that no matter the advances in technology the network will be able to adapt and still deliver the services the organisation requires. The strategy needs to address the following areas:

• Data transfer (traffic)• Distribution/coverage• Access and security• Facilities• Storage capacity.

Page 38: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Backup and recovery strategy

• An organisation needs a backup and recovery strategy to ensure that operational data is not accidentally destroyed or damaged. As organisations rely more and more on information systems to store and process their data, it is vital that processes and procedures are

introduced to ensure data is kept safe from loss or harm.

Page 39: Internet Services -World Wide Web -E-mail -Conferencing and Newsgroups -File Transfer & Updating -Chat/Instant Messaging.

Storage CapacityHierarchy of Memory Capacity

1byte = 8 bits1KiloByte = 1024 bytes1MegaByte = 1024 Kbytes1GigaByte = 1024 Mbytes1TeraBytes = 1024 GBytes


Recommended