1. Shape of a Network

2. Topology  The way the computers are __  Four different __  __

3. Four types  __

4. Bus Network  Simplest/__  __  Single cable – trunk  Computers are passive __  Any computer (node) can pass a __  Transmissions are __ to one computer at a time – one computer is the __  Other __ must wait until the line is free

5. Collision  __ runs into each other  CSMA/CD – carrier sense multiple accesses with collision __  Both nodes must back off and wait for __  Single bounce – caused ___ continues uninterrupted to the end of the bus and then keeps ___ and forth along the cable, keeping other nodes from using the line  Terminator – __

6. Disrupting Communication  Break in the __ –Physically separated –One end is __  All __ stops  Computers can still __ as stand- alone –Just can’t communicate or ___

7. Network Expansion  Cable in a bus ___ can be expanded in one of two ways: –Barrel connector – ___  Connectors weaken __  Continuous cable is __ –Repeater – __  Boosts __ it sends it on its way  Better than connector because ___ further and still be correctly received

8. Advantage/Disadvantage  Advantages –Easy to __ –Require less __ –__easy to add and remove  __ –Problems __to pinpoint –Breaks mean a ___ in entire network –____ slow network

9. Star Network  Like arms of ___  Stretches out in __  Hub – __  Hub __ in the network boosting signals as they pass  It can be a __ panel that simply relays transmission __

10. Advantages/Disadvantages  __ –Centralized __ and management –Expandable –Nodes __ –__ –Break in cable brings down __  Disadvantages –Requires __ –If __

11. Ring Network  Nodes __  Data __  Each __ : –The one that __ –The one to which __  The failure of one node __

12. Token Passing  A way to avoid __ and help data run smoothly  Computers __ of bits – tokens  A node has to wait __  Computer __ token to let other nodes know that a token is in use  Token __– 186,000 miles per second

13. Advantages/Disadvantages  Advantages –Each __ –Do __  Disadvantages –Problems __ –Break __

14. Mesh Network  Computer __

15. Advantages/Disadvantages  Advantages –Provides __ –If __ –Easy __  Disadvantages –Expensive __