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Exam (elaborations)

ATT Week 12 (ET) Exam – Exam Questions and Answers Graded A+

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This document contains ATT Week 12 (ET) exam questions and detailed A+ graded answers designed to support students in exam preparation and course revision. It covers key weekly topics, essential concepts, and practice-style questions that help reinforce understanding and improve academic performance. The material is useful for self-study, reviewing course content, and becoming familiar with common exam structures and expected answer formats.

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ATT WEEK 12 (ET) EXAM




ATT WEEK 12 (ET) EXAM QUESTIONS AND ANSWERS GRADED A+




WHAT ARE FIBER OPTIC SYSTEMS CAPABLE OF TRANSMITTING? ANS
>> DIGITAL AND ANALOG SIGNALS


WHAT TYPE OF MEASUREMENT IS USED TO IDENTIFY THE QUALITY OF
AN ANALOG SYSTEMS SIGNAL TRANSMISSION? ANS >> SNR


WHAT TYPE OF MEASUREMENT IS TYPICALLY USED TO IDENTIFY THE
QUALITY OF A DIGITAL SYSTEM'S SIGNAL TRANSMISSION? ANS >> BER


WHAT TYPE OF SIGNAL IS TRANSMITTED OVER A FIBER OPTIC CABLE?
ANS >> LIGHT


TRANSMITTING A MODULATED SIGNAL THROUGH A FIBER OPTIC CABLE
BY VARYING THE LIGHT BEAM IS CALLED? ANS >> INTENSITY
MODULATION

, ATT WEEK 12 (ET) EXAM




WHAT SIGNAL IS USUALLY TRANSMITTED THROUGH A FIBER OPTIC
CABLE BY ENERGIZING AND DE-ENERGIZING THE LIGHT SOURCE? ANS
>> PCM


What does PCM stand for? ANS >> Pulse Code Modulation


HOW TO DETERMINE IF A FIBER OPTIC SYSTEM IS FAULTY? ANS >>
COMPARE THE INITIAL INPUT SIGNAL TO THE FINAL OUTPUT SIGNAL


HOW DO YOU DETERMINE IF A TRANSMITTER IS FAULTY? ANS >>
COMPARE THE INITIAL INPUT SIGNAL WITH THE SIGNAL APPLIED TO
THE OPTICAL SOURCE


HOW DO YOU DETERMINE IF A RECEIVER IS FAULTY? ANS >> COMPARE
THE SIGNAL FROM THE OPTICAL DETECTOR WITH THE FINAL OUTPUT
SIGNAL


HOW DO YOU DETERMINE IF A CABLE IS FAULTY? ANS >> COMPARE
THE SIGNAL APPLIED TO THE OPTICAL LIGHT SOURCE WITH THE SIGNAL
FROM OPTICAL DETECTOR


HOW DO YOU DETERMINE IF A SOURCE IS FAULTY? ANS >> COMPARE
OPTICAL LIGHT SOURCE AND OPTICAL DETECTOR

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