NET1L - Lesson 4 (Physical Layer Pt. 2)

Is the most common type of cabling used in networks today.

• Copper Cabling

• UTP Cabling

• Fiber-Optic Cabling

• Wireless Media

It is inexpensive, easy to install, and has low resistance to electrical current flow.

• Copper Cabling

• UTP Cabling

• Fiber-Optic Cabling

• Wireless Media

What are the limitations of Copper Cabling?

• Attenuation

• The electrical signal is susceptible to interference from two sources: EMI and RFI

• Speed

• Distance

The longer the electrical signals have to travel, the weaker they get.

• Attenuation

• The electrical signal is susceptible to interference from two sources: EMI, RFI and Crosstalk

• Speed

• Distance

Copper cables are susceptible to interference from two sources, which can distort and corrupt the data signals:

• Electromagnetic Interference (EMI)

• Radio Frequency Interference (RFI)

• Electromagnetic Frequency Interference (ERI)

• Radio Electromagnetic Interference (REI)

• CrossTalk

Strict adherence to cable length limits will mitigate attenuation.

• True

• False

Some kinds of copper cable mitigate EMI and RFI by:

• by using metallic shielding and grounding

• by twisting opposing circuit pair wires together

Some kinds of copper cable mitigate crosstalk by:

• by using metallic shielding and grounding

• by twisting opposing circuit pair wires together

3 Types of Copper Cabling:

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3 Types of Copper Cabling:

• Unshielded Twisted-Pair Cable (UTP)

• Shielded Twisted-Pair Cable (STP)

• Coaxial Cable

• Fiber-Optic Cable