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Hamdan mohamed 9/1

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A internet a is the global system of interconnected Computer network  that use the Internet protocoll. WAN is a wide area net work. LAN is local area network.

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1. what is computer network? Give                      

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1. what is computer network? Give                      

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Khaled Hussain 9/3
1.Computer network is two computers or more connected together to preform a usefull work.
2.LAN is local area network ex.network of the school
2.WAN is wide area network ex.Guy from AbuDhabi talking with a guy from Dubai.
3.Network topology is how network the topological structure of a network and may be depicted physically or logically.
3.Star topology is the topology where the router/switch is in the meadle and everything is connected in a shape of a star .
3.Ring topology is everything is conected in a circle shape.
3.Bus topology is where is where evrything is connected to a  long medium/wire.
4.Packet tracer app show you how network toplogy works.
5.the diffrence is in half duplex one computer is talking the other is listing,but in the full duplex they are both talk in the same time.
6.client server model is where somthing work as a server and other as a client like micraft.
6.peer to peer model is where everybody is equal but when someone like want something from your friend to send from  blutooth he work as a server and you as a client.
7.The diffrence is switch is for 1 or 2 networkd together but router can connect multiple of networks together.
8.Packet tracer app show you how network toplogy works.
9.network medium is a The physical channel used for transmission in the network. Wire, fiber and air are the three media.
9.twisted cable,coaxial cable and fibre optic cable.
10.Is the number of bits per minute.
10.bits per minute


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1.two or more computers connected together to prefrom something usefull work.
2.(LAN:local area network) E.X.small area like school
2.(WAn:wile area network) E.X.large area like Dubai
3.bus,star,ring


5.half duplex: one person talking and the other listening
5.full duplex: two talk at the same time
6.client server:someone creat a server and the othe join like micraft
6.peer to peer model:a computer system which connected to each other
7.switch:is desigend to connect computers with a network
7.router:is desigend to connect multiple network

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1. It enhances communication and availability of  information

2. It allows for more convenient resource sharing.

3. It makes file sharing easier.

4. It is highly flexible.

Virus and Malware. ...

Lack of Robustness. ...

Needs an Efficient Handler. ...

Lack of Independence.

A local-area network (LAN) connects the computer hardware in a localized area such as an office or home. Typically, LANs use wired connections to link the computers to each other and to a variety of peripheral devices such as printers.

Types of Network Topologies: The mapping of a LAN design is called Topology. There are four categories: Star topology, Bus topology, Ring topology and Mesh topology. Hybrid combinations of these topologies also exist.

cket tracer provides multiple opportunities for instructors to create different networking scenarios to explain different networking concepts. Since packet traceris not a replacement of real equipment but it helps a student to do lot of practice and gain lot of confidence so that it's easy to work on a real network

In a half duplex mode, signal is sent in both directions, but one at a time. ... In asimplex mode, only one device can transmit the signal. In a half duplex mode, both devices can transmit the signal, but one at a time. In a full duplex mode, both devices can transmit the signal at the same time.

The main difference between the Client-Server and Peer-to-Peer network model is that in Client-Server model, the data management is centralised whereas, in Peer-to-Peer each user has its own data and applications.

he most basic explanation is that a switch isdesigned to connect computers within a network, while a router is designed to connect multiple networks together. ... Even though routers and switches are different, they can be used interchangeably. For example, a router typically has several LAN ports and a single WAN port.

Packet Tracer. Packet Tracer is a cross-platform visual simulation tool designed by Cisco Systems that allows users to create network topologies and imitate modern computer networks. The software allows users to simulate the configuration of Cisco routers and switche

Types of Media Used in Computer Networking. There are three general classes of media types: coaxial cable, twisted pair and fiber optic cable.

While bandwidth is traditionally expressed in bits per second (bps), modern network links have greater capacity, which is typically measured in millions of bits per second (megabits per second, or Mbps) or billions of bits per second (gigabits per second, or Gbps).

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Khalifah waleed 9-2

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Abdulla mohamed 9/2

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The answer of question part(1)

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The answer of the questions part(2)

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1)A computer network is a set of computers connected together to do various things such as send information or recieve.

Advantages: Can easily share files, can communicate easily.

Disadvantages: Vulnerable to hacking, expensive.

2)LAN: Local Area Network, A computer network that is  used in small geographical areas, such as small buildings.
WAN: Wide Area Network, A computer network that is used in large geographical areas, often used to connect cities or several lans togeather.

3)A network topology is the layout of the network, there are 3 main types that are: Ring Topology, Star Topology, and bus topology.

4)The packet tracer app is an app that allows you to create network topologys, it helps you with knowing how networks work.

5)Half - duplex transmission refers to transmission of data one direction at a time, while full - duplex is when data is transmitted simultaneously.

6) The main difference between the client server  and peer to peer network model is that in Client-Server model, the data management is centralised whereas, in peer to peer each user has its own data and applications.

7)The difference between the switch and the router is that the switch is used to connect computers within a network, and the router is used to connect multiple networks together.

8)Question 4

9)A network medium is the communication channels used to connect to a computer network, the three basic types are: Coaxial Cable, Twisted Pairs, and the Fiber Optic Cable.

10)Bandwidth is the amount of bits transmitted in a second to an internet connection or a network, the units are kbps (Kilobits per second) mbps (Megabits per second) and gbps (Gigabits per second).

11)10110011 => 179. 67 => 01000011


12)FB => 1111,1011 => 251

13) 1010101010 => 2AA

Suhail Aljasmi 9-1

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No2

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