Networking+ Ch 3

(Amplitude Modulation) A modulation technique in wich the amplitude of signal is modifide

Extent to wich a signal has weakened after travaling a given distance

A measure of the difference between the highest and lowest frequencies that a medium can transmit

digital sigleals sent, baseband systems can only transmit one signal at a time

(Bayonet Neill-concelman) Standered for coaxial connectors

signals modulated as radiofrequency, analog pulses, multichannel (unlike Baseband)

UTP, 16-Mbps Throughput, Used in 16-Mbp tokenring, or 10-Mbps ethernet

UTP, 100-Mbps throughput, 100-MHz signal

reduced crosstalk, 350 Mhz

6 times throuput of cat 5, 250 MHz

550 MHz, multi-gigabit per second

1-GHz

9 pin, serial comunication

25 pin, serial

(Data circuit-terminating equipment)

Any end-user device, Pc, terminal

• (dense wavelength division multiplexing)
• multiplexing technique used over single mode or multi mode fiber, each signal differnt wavelangth

used to terminate coaxial

• (frequency division multiplexing)
• multiplexing, assighns unique frequency band to each comm. subchannel, modulated carrier frequencies, multiplexed to travel over a single channel

encircles fiber strand in connector, keeps fiber alighned

transmission were signals can travel both ways on medium at the same time

Delay between transmission of signal and its receipt

• (multimode fiber)
• Fiber core 50-100 microns, LED

analog into digital, and digital to analog

• (mech. trans.-registered Jack)
• Connector used with Multi and single fiber

nondata info that accompanys data

regens. digital signal without noise

coax, 75 ohms, 18 awg

coax, 50 ohms, 10 awg

50 ohm, 24 awg

75 ohm, 20 or 22 awg

stand. connector for UTP (Cat 3) analog phones

trans. pulses rep. bits of data follow one another sequentially

• (Single Mode Fiber)
• single path, faster for longer distance, explensive

• (Straight tip)
• conn. used with single-mode or miltimode fiber

Each node assinghned a time for transmitting

IEEE P. layer standered for achieving maximum of 10-Mdps thro. over coax, max length 500 meters, bus topology

IEEE 10-Mbps thro. over coax, 185 meter max, bus topology