Star Mesh Network Topologies 1 5 a Network

Star & Mesh Network Topologies 1. 5 a. Network Topologies, Protocols & Layers 1. 5 Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

Star & Mesh Network Topologies 1. 5 a. Network Topologies, Protocols & Layers 1. 5 e Star and mesh network topologies Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Learning Objectives i Understand the meaning of topology ii Understand what is meant by a star topology Understand what is meant by a mesh topology Be able to give advantages & disadvantages for star & mesh iii iv Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

Star & Mesh Network Topologies 1. 5 a. Network Topologies, Protocols & Layers 1. 5 Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Learning Objectives i Understand the meaning of topology ii Understand what is meant by a star topology Understand what is meant by a mesh topology Be able to give advantages & disadvantages for star & mesh iii iv Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Topology • • • Means a network’s physical layout How devices are linked together Several ‘classic’ topologies Real world networks more complex But classic topologies give simple overview of physical layout Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Learning Objectives i Understand the meaning of topology ii Understand what is meant by a star topology Understand what is meant by a mesh topology Be able to give advantages & disadvantages for star & mesh iii iv Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Star Topology Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Star Topology • Each device is connected by an individual cable directly to the server. • They tend to be the most reliable of the topologies • So star networks are usually the layout of choice in schools and offices Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Star Topology File Server Switch Local Area Network (LAN) Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Star Topology Advantages Disadvantages • Reliable since if one cable fails, other workstations not affected • Costly to install due to cabling & extra hardware eg switch • Consistent data transfer speeds even when network heavily used Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers • If central server or switch fails, whole network does down GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Learning Objectives i Understand the meaning of topology ii Understand what is meant by a star topology Understand what is meant by a mesh topology Be able to give advantages & disadvantages for star & mesh iii iv Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Mesh Topology Nodes Devices connected to others Usually node that exchange most data with Data travels between nodes Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Mesh Topology Full Mesh Each device has direct connection to all others Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Mesh Topology Partial Mesh Fewer connections but devices still linked indirectly Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Mesh Topology Wireless Mesh Much simpler than using cables! Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Mesh Topology • Has direct connections between nodes eg workstations or other devices. • Most are usually connected to the node that they exchange the most data with. • Only need one server on simpler mesh networks Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Mesh Topology Advantages Disadvantages • Less costly to set-up since less cables • Technical support can be high so needs good IT staff • Not dependent on central switch/server • Transmit data from different devices simultaneously since multiple direct connections Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers • Cabling is complex on large full mesh – but wireless also works well GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Learning Objectives i Understand the meaning of topology ii Understand what is meant by a star topology Understand what is meant by a mesh topology Be able to give advantages & disadvantages for star & mesh iii iv Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Comparison Topology Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

1. 5 a Star & Mesh Network Topologies Learning Objectives i Understand the meaning of topology ii Understand what is meant by a star topology Understand what is meant by a mesh topology Be able to give advantages & disadvantages for star & mesh iii iv Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9

Star & Mesh Network Topologies 1. 5 a. Network Topologies, Protocols & Layers 1. 5 Comp 1 (Exam) 1. 5 Network Topologies, Protocols & Layers GCSE Computing 1 -9