Information and Communication Technology [ Form 4 ]

3.0 Computer Networks and Communications

Contents

PROTOCOLA

TYPES OF NETWORKBINTERNET

INTRANET

123 EXTRANET

QUIZ3

Learning Outcomes

- Define Transmission Control Protocol/Internet Protocol (TCP/IP) as a protocol to facilitate communication over computer network.

Protocol

• What is protocol?

Protocol is a communication rules. Protocol provide rule how to

computers communicate. They define how devices

intercommunicate in a network environment.

Protocol

• The importance of Protocol Protocol define how devices,

applications or computers communicate in a network.

To specify the format that the information bits or packets must contain when traveling across this connection.

Protocol

Protocol

• The importance of Protocol Responsible for ensuring that

the information bits or data packets are 5 sent or received in a proper sequence.

• Some types of Protocol

1. Hypertext Transfer Protocol (HTTP)2. Simple Mail Transfer Protocol

(SMTP)3. File Transfer Protocol (FTP)4. Transmission Control Protocol (TCP)5. Internet Protocol (IP)

Protocol

Protocol

1. Hypertext Transfer Protocol (HTTP)

This protocol is used to access, send and receive Hypertext Markup Language files (HTML) files on the Internet.

2. Simple Mail Transfer Protocol (SMTP)

This protocol is used for transferring e-mail between computers.

Protocol

3. File Transfer Protocol (FTP)

FTP is responsible for showing files to be copied between devices.

Protocol

4. Transmission Control Protocol (HTTP)

This protocol ensures the delivery of information packets across network.

Protocol

Protocol

5. Internet Protocol (IP)

This important protocol is responsible logical addressing called IP address to route information between networks.

Learning Outcomes

- Describe the types of network communications technology:

1.) Internet2.) Intranet 3.) Extranet

Types of Network

11

InternetInternet

33

ExtranetExtranet22

IntranetIntranet

Types of Network Communication

Technology

Internet

Internet

• The internet

Was created in the 1960s. The world’s largest computer network

which connects millions of computers all over the world.

Internet transmits data by using Internet Protocol (IP).

Internet

• Usages of the Internet are: Information;

Research and exchange.

Commerce. Real time

communication Banking

Shopping Entertainment Education Gaming

Explore the Homepage http://www.mimos.my/ http://www.tm.net.my http://www.jaring.my/ http://timebroadband.time.net.my/ http://www.airzed.com/ http://www.maxis.com.my/ http://www.atlasone.com/ http://eb.net.my/

Internet

• Internet services

Internet

• Internet services

Intranet

Intranet

Intranet• The Intranet

Intranet technology allows sharing of valuable information and lets business activities carry on even without a key personnel present at the business premises.

Intranet is an internal network that uses Internet technologies. It is a small version of the Internet that exists within an organization.

Intranet

• Uses of intranet:

Makes company information accessible to employees and facilitate working in groups.

To access intranet, employees need to be online.

Intranet

• Uses of intranet:

To let the employees access the intranet from everywhere around the world, employee will be given the intranet address, user name and password.

Intranet

• Intranet usually includes electronic publishing of materials related to an organization such as:

Telephone directories

Event calendars Employee

handbook Job posting

Email services News bulletin Company forms Staff information

Intranet

• Intranets too are used to conduct more sophisticated tasks such as:

Groupware applications in project management.

Remote discussion rooms (chat rooms)

Group scheduling Video conferencing

Intranet

Internet

Comparison Between Internet And Intranet

Intranet

1.An internal network accessible by authorized individuals within an organization.

1.Used to access global information and for instant communication by anyone, anywhere and anytime.

Internet vs. Intranet

Internet

Internet vs. Intranet

Comparison Between Internet And Intranet

Intranet

2.Connects within an organization. Intranet generally make company information accessible to employees and facilities group activities.

2.Connects and links to various organization like business, government agencies, educational institution and individuals.

Extranet

Extranet

Extranet

• The extranet

In the late 1990’s and early 2000, several industries started to use the term “extranet”.

An extranet is a private network - uses Internet technology and public telecommunications system to securely share relevant information with authorized parties.

Extranet

Central repositories of shared data made accessible via the web only to authorized members of particular work groups.

Extranet• Uses of extranet:

Share product catalogues with wholesalers.

Jointly develop programs with other companies.

Provide access services given by one company to a group of other companies.

Share news of common interest exclusively with partner companies.

1. Uses internet technology

2. Serves everybody

1. Uses internet/ intranet technology

2. Serves extended enterprise, including defined sets of customers or suppliers or other partner

Internet Extranet

Internet vs. Extranet

Comparison Between Internet And Extranet

3.With or without firewall.

4.Low security.

3.With firewall.

4.Tight security.

Internet Extranet

Internet vs. Extranet

Comparison Between Internet And Extranet

1. Identify the standard internet protocol and discuss its essential features.

2. Find all the words:

Quiz

1. INTERNET

2. INTRANET

3.EXTRANET

4.PROTOCOL

5.PACKETS

6. INFORMATION

S A F H K O Y V J E I

T C A L A D H T Q N S

E B P R G R P F T Q P

N J R A I S A R E M A

R J O V P M A S R F C

E X T R A N E T T Z K

T O O R E L O A Y Z E

N S C T N W T T U H T

I T O E A A P L I L S

I P L R Q R Y D P L P

N O I T A M R O F N I

A Z R I Q I C D X W W

ANSWERS• The standard protocol for the Internet is TCP/IP

(Transmission Control Protocol/Internet Protocol). The essential features of this protocol involve (1) Identifying sending and receive device and (2) reformatting information for transmission across the internet.

• Identification: Every computer on the internet has a unique numeric address called an IP address (Internet Protocol Address).

• Reformatting: Information sent or transmitted across the internet usually travel through numerous interconnected networks. Before the message is sent, it is reformatted or broken down into small part called packets.

S A F H K O Y V J E I

T C A L A D H T Q N S

E B P R G R P F T Q P

N J R A I S A R E M A

R J O V P M A S R F C

E X T R A N E T T Z K

T O O R E L O A Y Z E

N S C T N W T T U H T

I T O E A A P L I L S

I P L R Q R Y D P L P

N O I T A M R O F N I

A Z R I Q I C D X W W