Week 3 : Computer Networking

What do I want from this class?
I want to learn more about computer networking for my career as a teacher in the future that are technologically advanced.

What might I expected from this class?
I expected that I will learn about type of cable, cable connector and compare wired and wireless network in terms of speed,cost and reliability.

Why this class is relevant to my study?
This class very relevant to my study because improve my knowledge about computer networking and world today is full advanced with technology especially communication and networking.

What new thoughts have come into my head so far in this class?

 I learn about how to set up network by network components. For example, Printer(1), computer(2), personal laptop(1), concentrator/hubs(1), server(1), wires and network interface card(2). This is my example answer. ( NIC must with computer)

Set up network.

COMPUTER NETWORKING

Wired Vs Wireless network  

Wired network-connected by using cables. Example using conventional telephone cables. 

Wireless network-use signals to transfer data. Example television and radio network and cellular network.

For home connection,

    Speed-Wired network better than wireless network.

    Cost-Wired network

    Reliability-Wireless network. 

Type of Cable.

1.Coaxial cable - carry large number of high-speed video transmission at one time.

2.Fiber optic cable - Transfers data represented by light pulses (billions of bit per second).

3.Twisted-pair cable

   i)Shielded twisted pair (STP)

  ii)Unshielded twisted pair (UTP)

 

Cable Connector

1.Coaxial cable connector - Bayonet-Neill-Concelman (BNC)

2.Fiber optic cable connector - ST & SC Connector

3.UTP Cable connector - RJ-45 Connector ( RJ = Registered Jack )

Network Hardware. 

1. File server - fast computer

2. Workstation - computer that connected to a network. Example laptop.


3. Network Interface Card (NIC) 
 -provides the physical connection between the network and the computer workstation.
 -three most common network interface connection are Ethernet cards, localtalk connectors (macintosh computer-apple), and token ring cards ( nine pin Din type connector).

4. Concentrator/Hubs
-central connection point, lots of extra network traffic, network less efficient.

5. Switch

-connect the devices together via networking cables and to facilitates communication between the devices, but they differ in how they transfer data.

When to use switch? hubs?

Switch - network larger ( more 50 users)

Hubs - small network (less 30 users)

6. Repeater

-to boost the signal with a device called a repeater. The repeater electrically amplifies the signal it receives and rebroadcasts it.

7. Bridges - connects multiple network segments.                                                                                   

  

8. Routers - Connectors that used to link different networks. Like bridges but more advanced. 

Before the class dismiss, we've been asked to set up network by these network components.

-Printer(1), computer(2), personal laptop(1), concentrator/hubs(1), server(1), wires and network interface card(2).*(NIC must with computer)