Week4

For this week we were introduced  about communication system and its function. To catch the attention of the students There was a small exchange between the lecturer and students and a series of question answer.

By answering some questions one by one, I was gradually getting to know the concept of computer internet, the reason why we should have this communication method and network components.
Computer internet components are Communication Media, Interconnecting Devices, Computers, Networking Software and Applications. And I also got the basic networking concepts are Topology, Protocol and Architecture. At the end of first class in week 3, we were also taught us the types of signal which are analogue signal and digital signal.

Later, we have learnt the communication channel, network medium, physical media, physical medium, wireless media and wireless medium.

By the end of the second class in week 3, we have learnt that communication medium is essential for a computer communication to take place, and there are various types of digital communication systems/ applications around us that either connected with guided or unguided media. The certain type of media would be more popular in the future.

After this, we studied the types of network, they are:

Network in small geographical Area (Room, Building or a Campus) is called LAN (Local Area Network)

Network in a City is call MAN (Metropolitan Area Network)

Network spread geographically (Country or across Globe) is called WAN (Wide Area Network)

At the same time, we also understood the meaning of peer to peer networking,  it was indicated in the follow photo:

Serve based network was next type. A server-based network offers centralized control and is designed for secure operations.

Client network

In a client/server network arrangement, network services are located in a dedicated computer whose only function is to respond to the requests of clients. You can see as follow:

Everything has pros and cons, this type of network too. The advantages and disadvantages of 

peer to peer networking, Server based network and Client network were clearly understood in this week’s session. 

By the end of the week, we knew about network coverage and medium, there are also other ways to classify computer networks  and there are ways to improve a computer network either a LAN or WAN type.

 Thank you.