Transcript Bus (line) Network

Computer Networking
Fundamentals
Lesson 2
Lesson2 :
Lesson Objectives
• Compare different network topologies.
• Classify computer networks.
• Understand how to share resources
Network Topologies
Networking Topologies: defines the physical connections of
hosts in a computer network. There are several types of
physical topologies including:
• Bus
• Ring
• Star
• Mesh
Activity 1
Prepare an A3 poster for the network
topology which assigned to your group?
10 Minutes
Bus (line) Network
Bus (line) Network: which all devices
are attached to a line.
Advantage of bus (line) Network topology:
• Simple, cheap and easy to install.
• Easy to add any device to the network.
• If a device is not working, it does not effect on
other network devices.
Disadvantages of bus (line) Network topology:
• Slow in data transmission.
• Terminators are required.
• If make any modification to network (add or
remove device) must stop the whole network
• If a main cable is damaged, the network fails or
splits into two.
Ring Network
Ring Network: Devices are connected
to each other in a circular shape..
Advantages of ring topology:
• All data flows in one direction.
• Data transfer is fast.
• Ease of installation and low cost.
Disadvantages of ring topology :
• If one workstation shuts down the whole network
will fail.
• difficult to make any modification to .
Star Network
Star Network: Each computer is
individually wired to a central
connecting device (hub or switch or
router)
Advantages of star topology :
• Centralized management.
• Data more secure and fast.
• Easy to add another computer to the network.
• If one computer on the network fails, whole network
will not be affected.
Disadvantages of star topology:
• If the central computer, hub, or switch fails, the
entire network fails or stop working.
Mesh Network
Mesh Network topology: A network setup
where each computer and network device
is interconnected with one another.
Advantages of mesh topology:
• commonly used for wireless networks
Disadvantages of mesh topology:
• Very expansive
• very difficult to setup and administrate
Student Book Exercise
Discuss with your classmates the different networking topologies available
at your school?
Classification of computer networks as the relationship between users
Classification of computers according to relationship between the users
during work and according to the privileges of each user.
1. Peer to Peer network
2. Server / Client network
Peer to Peer
Advantages of Peer to Peer network:
Peer to Peer: means that each
computer is treated as an equal in
privileges .
•
•
•
Ease of installation and low cost.
Can be used for small networks
It uses for simple tasks such as file and printer sharing.
Disadvantages of Peer to Peer network:
•
•
•
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Difficult to control the network.
The lack of a central safety.
Limited expansion.
The network is slow.
2016 ‫ فبراير‬/‫برنامج تدريب المعلمين الجدد‬
Files and printers Sharing
At this stage, we will discuss how you can share printers, files in the P2P network (Peer
to Peer) and using the Windows operating system. There are several elements to
consider before you began the process of participation.
1-The computer must be a member of one of the working
groups (Workgroup) and has privileges to share files
and devices.
2 - the printer want to be share is connected to a computer.
3 - Use Sharing Wizard is active before participation
processor.
Server / Client
Advantages of Client / Server:
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Server/
Client: is an architecture that
distributes applications between servers and
client computers
Protect data from loss or damage.
Increase number of customers.
Data confidentiality is assured.
Easy to manage network resources.
Server: System that provides services such as
Windows Server
Client: Device that requests services such as
Windows 10
Disadvantages of Client / Server:
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If a server stops working the entire network stop.
Installation is difficult and expensive.
Some examples of uses for servers
•
File server: A file server stores files for computers to share.
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Print server: A print server controls printers that can be connected directly to the server or (and
more commonly) are connected to the network. The print server can control the starting and
stopping of document printing, as well as concepts such as spooling, printer pooling, ports, and
much more.
•
Database server: A database server houses a relational database made up of one or more files.
SQL databases fall into this category
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Messaging server: This category is enormous. Messaging servers include not just email servers,
but also fax, instant messaging, collaborative, and other types of messaging servers.
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Web server: Web servers are important to share data and provide information about a company.
Activity 2
Using Microsoft Visio program, draw
a diagram for your school network
topology?
Microsoft Visio 2010