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Unit 1: Information
Communication Technology
Computer Networking
Mr.Johnny
Fill in the blanks
game
What is a network?
A network is a group of ____ or more
________ systems linked together
What is a network?
A network is a group of two or more
computer systems linked together
The Internet
The Internet is a global ______ connecting
millions of computers.
The Internet
The Internet is a global Network connecting
millions of computers.

________ sharing- allows users to share
programs and data to anyone connected
on the network.

Reliability- allows mult...

Resource sharing- allows users to share
programs and data to anyone connected
on the network.

Reliability- allows mult...
Parts of a Network
Parts of a Network
Workstation
Parts of a Network
Parts of a Network
Nodes
Parts of a Network
Parts of a Network
Server
Parts of a Network
Parts of a Network
Network
interface card
Parts of a Network
Parts of a Network
Network
Connectivity
Software for networking
• Network ________ System (NOS)-
Special operating system that helps
computers in a network.
• Spe...
Software for networking
• Network Operating System (NOS)-
Special operating system that helps
computers in a network.
• Sp...
What is a network characterized
by?
• Topology – The ______ of how computers
are connected together
• Protocol-Set of ____...
What is a network characterized
by?
• Topology – The design of how computers are
connected together
• Protocol-Set of rule...
Network Topologies
Network Topology Activity
http://www.bbc.co.uk/schools/gcsebitesize/ict/datacomm/2networks_act.
Guess the Network Topology
Ring Network
Ring Network
Advantages
-Amount of cable needed is shorter
compared to other Topologies,
making it more reliable.
-Works v...
Ring Network
Disadvantages
-If one Node fails to pass data, the
entire network fails.
-difficult to find problems in the
n...
Guess the Network Topology
Star Network
Star Network
Advantages
-easy to install and wire
-No interruption to the network if any nodes
fail
-easy to detect faults...
Star Network
Disadvantages
-Longer cables are needed, increasing cost.
-If central hub fails, entire network fails.
-One c...
Guess the Network Topology
Bus Network
Bus Network
Advantages
-wiring layout is simple, short cable is
sufficient to connect
-easy to extend, extra nodes can be
...
Bus Network
Disadvantages
-Entire Network is dependent on main/bus
cable.
-As control of the network is not
centralised,fa...
Other Network Topologies
Tree Topology
Advantages
-easy to expand the network for new users
-supported by large number of hardware and
software vendors.
Disadvan...
Mesh Topology
Mesh Topology
Advantages
-multiple links, if one route is blocked,
other routes can be used for
communication
-Easy to fin...
Mesh Topology
Disadvantages
-can be expensive
-Difficult to install
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Lesson plan 2 mattaya 4

lesson plan 2

Lesson plan 2 mattaya 4

  1. 1. Unit 1: Information Communication Technology Computer Networking Mr.Johnny
  2. 2. Fill in the blanks game
  3. 3. What is a network? A network is a group of ____ or more ________ systems linked together
  4. 4. What is a network? A network is a group of two or more computer systems linked together
  5. 5. The Internet The Internet is a global ______ connecting millions of computers.
  6. 6. The Internet The Internet is a global Network connecting millions of computers.
  7. 7.  ________ sharing- allows users to share programs and data to anyone connected on the network.  Reliability- allows multiple copies of important ____ at multiple locations. I.e Banks, military operations.  Fast _____________- a cheap and easy alternative, especially for a lot of companies.I.e Email. Advantages of a network
  8. 8.  Resource sharing- allows users to share programs and data to anyone connected on the network.  Reliability- allows multiple copies of important data at multiple locations. I.e Banks, military operations.  Fast Communication- a cheap and easy alternative, especially for a lot of companies.I.e Email. Advantages of a network
  9. 9. Parts of a Network
  10. 10. Parts of a Network Workstation
  11. 11. Parts of a Network
  12. 12. Parts of a Network Nodes
  13. 13. Parts of a Network
  14. 14. Parts of a Network Server
  15. 15. Parts of a Network
  16. 16. Parts of a Network Network interface card
  17. 17. Parts of a Network
  18. 18. Parts of a Network Network Connectivity
  19. 19. Software for networking • Network ________ System (NOS)- Special operating system that helps computers in a network. • Specialised networking software- Required to manage, direct and control operations within a network.
  20. 20. Software for networking • Network Operating System (NOS)- Special operating system that helps computers in a network. • Specialised networking software- Required to manage, direct and control operations within a network.
  21. 21. What is a network characterized by? • Topology – The ______ of how computers are connected together • Protocol-Set of ____ that computers must follow on the network to communicate with each other. • Architecture-This specifies the _______ components, their organization/configuration and data formats used in processing.
  22. 22. What is a network characterized by? • Topology – The design of how computers are connected together • Protocol-Set of rules that computers must follow on the network to communicate with each other. • Architecture-This specifies the physical components, their organization/configuration and data formats used in processing.
  23. 23. Network Topologies
  24. 24. Network Topology Activity http://www.bbc.co.uk/schools/gcsebitesize/ict/datacomm/2networks_act.
  25. 25. Guess the Network Topology
  26. 26. Ring Network
  27. 27. Ring Network Advantages -Amount of cable needed is shorter compared to other Topologies, making it more reliable. -Works very well with optical fibres.
  28. 28. Ring Network Disadvantages -If one Node fails to pass data, the entire network fails. -difficult to find problems in the network -Not possible to shut down a small section of the ring without the entire network not working.
  29. 29. Guess the Network Topology
  30. 30. Star Network
  31. 31. Star Network Advantages -easy to install and wire -No interruption to the network if any nodes fail -easy to detect faults -Protocols are simple as any given connection only involves hub and connecting node.
  32. 32. Star Network Disadvantages -Longer cables are needed, increasing cost. -If central hub fails, entire network fails. -One computer with a virus will affect all computers. -Number of nodes connecting is limited by availability of connection points
  33. 33. Guess the Network Topology
  34. 34. Bus Network
  35. 35. Bus Network Advantages -wiring layout is simple, short cable is sufficient to connect -easy to extend, extra nodes can be connected at any point. -A signal Amplifier called a repeater can be used to for extensive additions.
  36. 36. Bus Network Disadvantages -Entire Network is dependent on main/bus cable. -As control of the network is not centralised,fault detection is not easy. -Large number of computers can lead to a performance problem.
  37. 37. Other Network Topologies Tree Topology
  38. 38. Advantages -easy to expand the network for new users -supported by large number of hardware and software vendors. Disadvantages -If “backbone” line breaks, the network will go down -difficult to configure/wire than other topologies
  39. 39. Mesh Topology
  40. 40. Mesh Topology Advantages -multiple links, if one route is blocked, other routes can be used for communication -Easy to find problems -Performance is not affected with heavy load of data transmission
  41. 41. Mesh Topology Disadvantages -can be expensive -Difficult to install
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lesson plan 2

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