Networks and Communications

Characteristics of Wired Transmission Media

Contributors
Christian Bien Portrait_edited.jpg

Sean Peralta Garcia

tutorial.png

one.png
Twisted Pair (Unshielded and Shielded)
Slide1.jpeg

Twisted pair cables are a type of cable construction used in networking, mostly associated with ethernet cables. Twisted pair cables consist of eight wires that are twisted into 4 sets. The wires are twisted into pairs to mitigate electromagnetic fields created when current is run through wires. These fields can create electromagnetic interference between twisted pairs, which can result in lost data in transmission. Twisted pair cables have a range of approx. 100m before data loss occurs, requiring a repeater to reamplify the signal. Twisted pair cables can be unshielded or shielded: • Unshielded Twisted Pair (UTP) cables are prone to external electromagnetic interference by surrounding high current carrying conductors. This is due to its lack of shielding. • Shielded Twisted Pair (STP) cables are less prone to external electromagnetic interference due to its shielding, designed to reflect or absorb the interference, thus not affecting data transmission. Shielding constructions include copper braid, copper mesh, aluminium mesh, etc

two.png
Fibre Optic
Slide2.jpeg

Fibre optic cables are cables that consist of flexible optical fibre/s fibres made of glass that are designed for light signals to travel through in order to transmit data. There are two types of fibre optic cable; single-mode and multi-mode. • Single-mode fibre optic is characterised by a small diameter core that only allows a light signal to propagate. This design allows for data to transmit faster and a further distance (approx. 20km) but carries less bandwidth than multi-mode fibre. • Multi-mode fibre optic is characterised by a larger diameter core that allows multiple light signals to propagate concurrently. Its larger size allows for a higher bandwidth but with a reduced transmission distance (approx. 2.5-5km).

Topic Menu
Layers in TCP/IP
Characteristics of Wireless Transmission Media
Characteristics of Wired Transmission Media
Storage Area Networks and Network Attached Storage

Want your ATAR notes to empower over 77,000 students per year?

Logo-New-Large.png

Join the Team.
Empower Education.

three.png

Sign Up for Free to Read More 

Get instant access to all content and subscribe to our weekly email list on study tips, opportunities and other free resources. 

It only takes a minute...

Slide3.jpeg
four.png
Slide4.jpeg
five.png
Slide5.jpeg
six.png
Slide6.jpeg
157-seven.png
Slide1.jpeg
156-eight.png
Slide8.jpeg