Communications & Network Systems

Explore a comprehensive tutorial on communications and network systems, covering fundamental concepts, network topologies, protocols, hardware components, and transmission technologies. Learn about the communications system framework, network basics, and various topologies including point-to-point, bus, ring, star, tree, and mesh. Dive into CSMA/CD protocol, network resources, operating systems, and account management. Understand the differences between LANs and WANs, and explore networking devices such as bridges, gateways, NICs, cables, repeaters, hubs, switches, and routers. Discover wireless technologies like infrared, Bluetooth, Wi-Fi, NFC, and cellular networks. Examine terrestrial microwaves and satellite communications. Gain insights into network performance metrics, signal rates, and various cable types. Finally, learn about error detection techniques including parity checks, checksums, and cyclic redundancy checks.

What are Communications Systems?.
Communications System Framework.
Network Basics.
Point-to-Point, Bus & Ring Topologies.
Star, Tree & Mesh Topologies.
Network Topologies - Conclusion.
CSMA/CD Overview.
CSMA/CD - Collision Procedure.
Network Resources (1 of 2).
Network Resources (2 of 2).
Network Operating Systems & Policies.
Account Management.
Assigning Rights: Peripherals.
Assigning Rights: File Privileges.
LANs & WANs.
Bridges, Gateways & WAPs.
Network Interface Cards.
Cables & Backbones.
Repeaters.
Hubs & Switches.
Routers.
Infrared.
Bluetooth.
Wi-Fi and NFC.
Cellular.
Terrestrial Microwaves.
Satellite.
Ping.
Speed Measurements.
Differing Speeds.
Signal Rate vs Speed.
Cables & Electromagnetism.
Twisted Pair.
Coaxial Cable.
Optic Fiber.
Parity Check.
Parity Check Problem.
Checksum.
Cyclic Redundancy Check.