WCM - Chpt3

Explain the differences between ‘Guided Media’ and ‘Unguided Media’.

• Guided media employ an antenna for transmitting through air, vacuum, or water, whereas unguided media provide a physical path along which the signals are propagated

• Guided media use fiber optic cables exclusively, while unguided media rely solely on coaxial cables.

• Guided media provide a physical path along which the signals are propagated. Unguided media employ an antenna for transmitting through air, vacuum, or water.

• Guided media transmit data through satellites, whereas unguided media use underground cables.

State three examples of ‘Guided Media’.

• Fiber Optic Cables, Coaxial Cables, Twisted Pair Cables

• Radio Waves, Microwaves, Infrared

• Bluetooth, Wi-Fi, Satellite Communication

• Ethernet, Cellular Networks, Infrared

Identify the types of cables shown below:

• Twisted Pair Cable

• Coaxial Cable

• Power Cable

• Fibre Optic Cable

Identify the types of cables

• Coaxial Cable

• Twisted Pair Cable

• Fibre Optic Cable

• Power Cable

Identify the types of ‘Twisted-Pair’ cable

• Shielded Twisted Pair Cable

• Unshielded Twisted Pair Cable

• Screened Twisted Pair Cable

• Coaxial Cable

Identify the types of ‘Twisted-Pair’ cable

• Shielded Twisted Pair Cable

• Unshielded Twisted Pair Cable

• Screened Twisted Pair Cable

• Coaxial Cable

State two disadvantages of ‘Shielded Twisted-Pair’ (STP) as compared to ‘Unshielded Twisted-Pair’ (UTP) cable.

• Less reliable and higher latency

• Higher signal attenuation and shorter maximum distance

• More expensive and difficult to install

• Slower data transmission rates and less flexible

List one advantage of ‘Fibre Optic’ cables over ‘Copper’ cables.

• Not susceptible to electromagnetic interference

• Requires less maintenance

• Easier to install

• Cheaper to produce

Briefly explain the purpose of using the foil in a ‘Screened Twisted Pair’ cable.

• The foil provides extra strength to the cable structure.

• The foil protects EMI from entering or exiting the cable.

• The foil enhances the cable's flexibility.

• The foil improves the cable's data transmission speed.

State any one disadvantage of using ‘Unshielded Twisted Pair’ (UTP) cable.

• More prone to electrical noise and interference

• More expensive than other cable types

• Requires more complex installation

• Limited compatibility with network devices