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CCNA 1 V3--Module 4 Cable Testing

Practice these terms for the chapter test.

Tools

A	B
Signal Ground	A reference level of zero volts.
Shielding	Elminates signal loss.
Attenuation	Decrease in signal amplitude.
Impedance	Resistance to AC measured in Ohms.
Insertion Loss	Combined effects of attenuation & impedance.
Noise	Electrical energy makes data garbled.
Crosstalk	Transmits signals from one wire to another.
NEXT	Same end crosstalk.
FEXT	Crosstalk further away from transmitter.
PSNEXT	Cumulative effect of NEXT from all pairs.
ELFEXT	FEXT minus insertion loss of wire pair disturbed.
PSELFEXT	Combined effect of ELFEXT.