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Chapter 2 Part 1, Chapter 2 Part 2, fff - Coggle Diagram
Chapter 2 Part 1
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Connectivity Device
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Hub
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Accepts signals from a transmitting node and
repeats those signals from transmitting node and repeats those signals to all other connected nodes in a broadcast fashion
Bridges
Bridges are devices that connect two network segments by analysing incoming frames and making decisions about where to direct them based on each frame’s MAC address.
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Switches
Switches are connectivity devices that subdivide a network into smaller logical pieces, or segments.
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Because they have multiple ports, switches can make better use of limited bandwidth and prove more cost
efficient than bridges.
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Connectivity device
e) ROUTER
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Routers can integrate LANs and WANs running at different transmission speeds and using a variety of protocols.
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Chapter 2 Part 2
Fiber Media Cable Design
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Cladding
It tends to act like a mirror by reflecting light back into the core of the fiber and keep the light in the core as it travels down the fiber.
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Coaxial Cable
- Used as a transmission line for radio frequency signals.
- Its applications include feedlines connecting radio transmitters and receivers to their antennas,computer network connections.
- The electromagnetic field carrying the signal exists only in the space between the inner and outer conductors.
Layer of coaxial cable :
- Outer Jacket
- Braided Copper Shielding
- Plastic Insulation
- Copper Conductor
Coaxial Connector
- Bayonet Neill-Concelman(BNC)
- Threaded Neil-Concelman(TNC)
- N Type
- F Type
- Subminiature Version B(SMB)
Copper Media Safety
- The separation of data and electrical power cabling must comply with safety codes.
- Cables must be connect correctly.
- Installations must be inspected for damage.
- Equipment must be grounded correctly.
Fiber Media Cable Design
Jacket
- Typically a PVC jacket that protects the fiber against abrasion, moisture, and other contaminants.
Core
- The light transmission element at the center of the optical fiber.
- Types of core :
- Silica
- Glass
Buffer
- Used to help shield the core and cladding from damage.
Cladding
- It tends to act like a mirror by reflecting light back into the core of the fiber.
- This keeps light in the core as it travels down the fiber.
Strengthening Material
- Prevents the fiber cable from being stretched when it is being pulled.
- The material used is often the same material used to produce bulletproof vests.
UTP Cabling Standards
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Category 6 Cable (UTP)
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Supports 1000Mb/s - 10Gb/s , though 10Gb/s is not recommended
UTP Connectors
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Bad connector
Wires are exposed , untwisted , and not entirely covered by the sheath .
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Type of UTP Cable
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Rollover
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Application
Connects a workstation serial port to a router console port , using an adapter
Ethernet Crossover
Standard
One end T568A , other end T568B
Application
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Connects two networks intermediary devices
( switch to switch , or router to router )
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