KKPI

   

hay friends wahyuni ​​In this blog post I reviewed the common network that we use, in this post I took time from my lesson last week while studying KKPI


     PLEASE learn :)


1. What is a network?

2. Who first used the network in the world?

3. What is the difference with the osi layer internet layer?

4. Specify the level of the osi layer?

5. Mention the types of tissue?


Answer:

1. network is a system that consists of computers that are designed to be a variety of resources (printer, cpu) communication (share, internet messaging) and access to information (web browser).

2. Department of Defense america

3. OSI layer has 7 levels, while the Internet has 4 levels of layer

4. Physical layer, data link layer, network layer, trnasoprt layer, session layer, presentasion layer, application layer.

5. 1. Local Area Network (LAN)

2. Metropolitan Area Network (MAN)

3. Wide Area Network (WAN)

Type of Network Topology And Disadvantages and advantages

a. Bus topology

Figure 1: Working Principle Bus Topology

is often also referred to as the backbone topology, where there is a coaxial cable that stretched then a few computers connected to the cable.

Bus topology advantages:
• Layout simple cable so installation is relatively easy
• Damage to the client computer will not affect the communication between other clients
• Save wired so installation cost is relatively cheaper
• Addition and subtraction terminal can be done without interrupting the operation running.
Disadvantages bus topology:
• If the main cable (bus) or backbone is broken then the communication fails
• If the main cable is very long then the search becomes difficult disorder
• The possibility of collision data (data collisions) when many clients who send a message and it will reduce the speed of communication.
• Data security is not guaranteed
• Required repeater for long distance

 b. topology Ring

Figure 2: Working Principle of Ring Topology

Ring topology is called because of its shape like a circle cincing. All computers in the network will be connected in a ring. The ring is almost the same function as the topology concenrator star at the center of the gathering of the lead from any computer connected.

Pros ring topology:
• Can serve traffic flow data solid
• Data streams flow faster because it can serve data from the left or the server kanandari
• Trasmisi relatively simple data packets traveling in one direction only.
Disadvantages ring topology:
• Damage to any of the media sender / terminal work to paralyze the entire network
• Package the data must pass through every computer between the sender and the receiver, making it slower
• Development of a network becomes more rigid due to the addition of the terminal or node becomes more difficult when the port sudahhabis.

c. Star topology

Figure 3: Working Principle Star Topology

Star topology is called because of its shape like a star, a device called a concentrator can be a hub or switch to the center, where all the computers in the network is connected to the concentrator.

Advantages star topology:
• Because each component is connected directly to the central node management made easy
• Failure of communication easily traced.
• Failure in one component / terminal does not affect the other terminal communication.
• centralized control to facilitate the detection and fault isolation, and easy network management.
Disadvantages star topology:
• Failure to control center (central node) cut off all communication
• When used as a control center is the hub then the speed will be reduced in accordance with the addition of a computer, the more the slower.
• wasteful in the use of cable
• HUB conditions should remain in good condition, HUB damage resulting paralysis of all links in the network so that the computer can not communicate with each other.
Tree topology is a generalization of development or bus topology. Transmission medium is a branching cable loop is not closed yet.