Description
PRESENTATION ON INTERNET TECNOLOGY
NETWORK TOPOLOGY
3.0
INTERNET TECHNOLOGY
3.0 Internet Technology
3.1 Network Basic
3.1.1 Network Topology 3.1.2 Classification of network
3.2 The Internet
3.2.1 Overview the internet
3.2.1.1 Evolution of the internet 3.2.1.2 The internet connection 3.2.1.3 Internet Service Provider 3.2.1.4 The Internet Address
3.2.2 World Wide Web
3.2.2.1 Web Browser 3.2.2.3 Web page navigation 3.2.2.4 Information searching
3.3 Internet Services
3.5 Netiquette
3.4 Types of Websites
LEARNING OUTCOMES
At the end of this topic, students should be able to:
1) Explain types of network topology
What Is a Network?
A network is a collection of computers and devices connected together via communications devices and transmission media
Shelly Cashman
What Is a Network Topology?
A network topology refers to the layout of the computers and devices in a communications network.
Shelly Cashman
It refers to both the physical and logical layout of a network.
• The arrangement of a cabling is the physical topology.
• The path that data travels between computers on a network is the logical topology.
Types of network topology.
Three commonly used network topologies are:
Bus Network
Star Network
Ring Network
BUS NETWORK TOPOLOGY
Bus Network Topology A bus network consists of a single central cable (backbone), to which all computers and other nodes connect.
Backbone
Bus Network Topology
Advantages:
1. Inexpensive and easy to install.
2. Computers and other nodes can be attached and detached at any point on the bus without disturbing the rest of the network. 3. Failure of one node usually does not affect the rest of the bus network.
Bus Network Topology
Disadvantages:
1. Because all systems on the network connect to a single cable or backbone, a break in the cable will prevent all systems from accessing the network. 2. It is difficult to identify the problem if the entire network shut down.
STAR NETWORK TOPOLOGY
Star Network Topology All the computers and other nodes on the network connect to a central device, thus forming a star.
Star Network Topology
Two types of nodes that provide a common central connection point to all the other nodes on the network are a hub and a switch.
Hub / Switch
Star Network Topology
Hub / Switch
The device that provides a common central connection point for other devices on a network.
All data that transfers from one node to another passes through the hub or switch. The hub takes a signal that comes from any node and passes it along to all the other nodes in the network.
Star Network Topology Advantages:
1. If one node fails, only that node is affected. 2. Nodes can be added to or removed from network with little or no disruption. 3. Easy to troubleshoot and isolate problem.
Star Network Topology Disadvantages:
1. If the hub or switch fails, the entire network will be inoperable.
2. Requires more cable than most of the other topologies.
3. More expensive because of the cost of the hub/switch.
RING NETWORK TOPOLOGY
Ring Network Topology On a ring network, a cable forms a closed loop ( ring ) with all computers and devices arranged along the ring.
Ring Network Topology
Data transmitted on a ring network travels from node to node around the entire ring, in one direction Token passing is one method for sending data around a ring
Each node takes a turn sending and receiving information through the use of a token.
Ring Network Topology
Ring Network Topology
Advantages:
1. The transmission of data is relatively simple as packets travel in one direction only.
2. Cable faults are easily located, making troubleshooting easier. 3. The uses of token passing enables all nodes in a ring topology to share the network resources fairly.
Ring Network Topology
Disadvantages:
1. A failure in any cable or node breaks the loop and can take down the entire network. 2. Data packets must pass through every computer therefore, this makes it slower.
3. A ring network can span a larger distance than a bus network, but it is more difficult to install.
SUMMARY:
BUS NETWORK TOPOLOGY
DEFINITION A bus network consists of a single central cable (backbone), to which all computers and other nodes connect. ADVANTAGES Inexpensive and easy to install. DISADVANTAGES The break in the main cable(backbone) will prevent all systems from accessing the network. It is difficult to identify the problem if the entire network Shut down.
Other nodes can be attached or detached without disturbing the network.
Failure of one node usually does not affect the rest of the network.
SUMMARY:
STAR NETWORK TOPOLOGY
DEFINITION ADVANTAGES DISADVANTAGES If the hub or switch fails, the entire network will be inoperabled.
All the computers and other nodes on the network connect to a central device, thus forming a star.
If one node fails, only that node is affected.
Nodes can be added or removed from network with no disruption.
Requires more cables than most of the other topologies.
Easy to troubleshoot and isolate problem.
More expensive because of the cost of hub/switch.
SUMMARY:
RING NETWORK TOPOLOGY
DEFINITION ADVANTAGES Transmission of data is simple as packets travel in one direction only. DISADVANTAGES A failure in any cable or nodes breaks the loop and can take down entire network. Data packets must pass through every computer, thus make it slower.
On a ring network, a cable forms a closed loop (ring) with all computers and nodes arranged along the ring.
Cabel faults are easily located, making troubleshooting easier.
All nodes in ring topolgy share the network resources fairly.
More difficult to install than a bus network.
EXERCISE:
1) Which of the following statements describe about network topology correctly ? A. Nodes attached or detached at any point on the network. B. The failure of device on the network. C. Refers to the configuration of cables, computers and other peripherals. D. All of the above.
EXERCISE:
2) On a __________, all of the computers and nodes on the network connect to a central device. A. Bus network.
B. Ring network.
C. Star network.
D. All of above.
EXERCISE:
3) On a star network, the central nodes that provides a common connection point for nodes on the Network is called the ____________.
A. Hub.
B. Personal computer.
C. Printer.
D. File server.
EXERCISE:
4) On a bus network, if one node fails ________.
A. Only that node is affected. B. Only the nodes before that node are affected. C. Only the nodes after that node are affected. D. All the nodes are affected.
EXERCISE:
The transmission of data is relatively simple as packets travel in one direction only. 5) The statement above is correctly refer to the _________________. A. Bus network. B. Ring network. C. Star network. D. All of the above.
doc_590598398.ppt
PRESENTATION ON INTERNET TECNOLOGY
NETWORK TOPOLOGY
3.0
INTERNET TECHNOLOGY
3.0 Internet Technology
3.1 Network Basic
3.1.1 Network Topology 3.1.2 Classification of network
3.2 The Internet
3.2.1 Overview the internet
3.2.1.1 Evolution of the internet 3.2.1.2 The internet connection 3.2.1.3 Internet Service Provider 3.2.1.4 The Internet Address
3.2.2 World Wide Web
3.2.2.1 Web Browser 3.2.2.3 Web page navigation 3.2.2.4 Information searching
3.3 Internet Services
3.5 Netiquette
3.4 Types of Websites
LEARNING OUTCOMES
At the end of this topic, students should be able to:
1) Explain types of network topology
What Is a Network?
A network is a collection of computers and devices connected together via communications devices and transmission media
Shelly Cashman
What Is a Network Topology?
A network topology refers to the layout of the computers and devices in a communications network.
Shelly Cashman
It refers to both the physical and logical layout of a network.
• The arrangement of a cabling is the physical topology.
• The path that data travels between computers on a network is the logical topology.
Types of network topology.
Three commonly used network topologies are:
Bus Network
Star Network
Ring Network
BUS NETWORK TOPOLOGY
Bus Network Topology A bus network consists of a single central cable (backbone), to which all computers and other nodes connect.
Backbone
Bus Network Topology
Advantages:
1. Inexpensive and easy to install.
2. Computers and other nodes can be attached and detached at any point on the bus without disturbing the rest of the network. 3. Failure of one node usually does not affect the rest of the bus network.
Bus Network Topology
Disadvantages:
1. Because all systems on the network connect to a single cable or backbone, a break in the cable will prevent all systems from accessing the network. 2. It is difficult to identify the problem if the entire network shut down.
STAR NETWORK TOPOLOGY
Star Network Topology All the computers and other nodes on the network connect to a central device, thus forming a star.
Star Network Topology
Two types of nodes that provide a common central connection point to all the other nodes on the network are a hub and a switch.
Hub / Switch
Star Network Topology
Hub / Switch
The device that provides a common central connection point for other devices on a network.
All data that transfers from one node to another passes through the hub or switch. The hub takes a signal that comes from any node and passes it along to all the other nodes in the network.
Star Network Topology Advantages:
1. If one node fails, only that node is affected. 2. Nodes can be added to or removed from network with little or no disruption. 3. Easy to troubleshoot and isolate problem.
Star Network Topology Disadvantages:
1. If the hub or switch fails, the entire network will be inoperable.
2. Requires more cable than most of the other topologies.
3. More expensive because of the cost of the hub/switch.
RING NETWORK TOPOLOGY
Ring Network Topology On a ring network, a cable forms a closed loop ( ring ) with all computers and devices arranged along the ring.
Ring Network Topology
Data transmitted on a ring network travels from node to node around the entire ring, in one direction Token passing is one method for sending data around a ring
Each node takes a turn sending and receiving information through the use of a token.
Ring Network Topology
Ring Network Topology
Advantages:
1. The transmission of data is relatively simple as packets travel in one direction only.
2. Cable faults are easily located, making troubleshooting easier. 3. The uses of token passing enables all nodes in a ring topology to share the network resources fairly.
Ring Network Topology
Disadvantages:
1. A failure in any cable or node breaks the loop and can take down the entire network. 2. Data packets must pass through every computer therefore, this makes it slower.
3. A ring network can span a larger distance than a bus network, but it is more difficult to install.
SUMMARY:
BUS NETWORK TOPOLOGY
DEFINITION A bus network consists of a single central cable (backbone), to which all computers and other nodes connect. ADVANTAGES Inexpensive and easy to install. DISADVANTAGES The break in the main cable(backbone) will prevent all systems from accessing the network. It is difficult to identify the problem if the entire network Shut down.
Other nodes can be attached or detached without disturbing the network.
Failure of one node usually does not affect the rest of the network.
SUMMARY:
STAR NETWORK TOPOLOGY
DEFINITION ADVANTAGES DISADVANTAGES If the hub or switch fails, the entire network will be inoperabled.
All the computers and other nodes on the network connect to a central device, thus forming a star.
If one node fails, only that node is affected.
Nodes can be added or removed from network with no disruption.
Requires more cables than most of the other topologies.
Easy to troubleshoot and isolate problem.
More expensive because of the cost of hub/switch.
SUMMARY:
RING NETWORK TOPOLOGY
DEFINITION ADVANTAGES Transmission of data is simple as packets travel in one direction only. DISADVANTAGES A failure in any cable or nodes breaks the loop and can take down entire network. Data packets must pass through every computer, thus make it slower.
On a ring network, a cable forms a closed loop (ring) with all computers and nodes arranged along the ring.
Cabel faults are easily located, making troubleshooting easier.
All nodes in ring topolgy share the network resources fairly.
More difficult to install than a bus network.
EXERCISE:
1) Which of the following statements describe about network topology correctly ? A. Nodes attached or detached at any point on the network. B. The failure of device on the network. C. Refers to the configuration of cables, computers and other peripherals. D. All of the above.
EXERCISE:
2) On a __________, all of the computers and nodes on the network connect to a central device. A. Bus network.
B. Ring network.
C. Star network.
D. All of above.
EXERCISE:
3) On a star network, the central nodes that provides a common connection point for nodes on the Network is called the ____________.
A. Hub.
B. Personal computer.
C. Printer.
D. File server.
EXERCISE:
4) On a bus network, if one node fails ________.
A. Only that node is affected. B. Only the nodes before that node are affected. C. Only the nodes after that node are affected. D. All the nodes are affected.
EXERCISE:
The transmission of data is relatively simple as packets travel in one direction only. 5) The statement above is correctly refer to the _________________. A. Bus network. B. Ring network. C. Star network. D. All of the above.
doc_590598398.ppt