Communications Engineering Coaching Materials: Section 4 Module 4

(Last Updated On: December 8, 2017)

Communications Coaching Materials: Section 4 Module 4

This is the Section 4 Module 4 of the compiled Communications Coaching Materials taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies (EST), Communications Books, Journals and other Communications References. This particular Coaching Notes in Communications Engineering has random Questions and Answers in random topics. Make sure to familiarize each questions to increase the chance of passing the ECE Board Exam.

Communications Engineering Coaching: Section 4 Module 4

Few streets


Field Coding

Coding for lot of movements

File transfer

Not a responsibility of Data Link Layer

Flying Spot and CCD Telecine

Used in house ‐ transfer something

Frame Coding

Coding for lot of details but less movements



Free Space Path Loss

Losses of wave passing through vacuum


Unintentional or intentional changing the information
difficult to understand

Ge PIN Diode

PIN diode is important in detecting light in fiber optic
system. It is a PIN diode with notoriously high leakage current.

Geometric Dilution of Precision (GDOP)

Ephemeris and clock recovery ….


Analog transmitter cooling consistent throughout the season


256 symbols (?)


HiperNet (HiperLAN) uses ____ modulation.

Graded index fiber

Optical fiber whose core has a refractive index that decreases
gradually with increasing radial distance from the fiber


Allows telephone communication via internet

Half the original rate

Effect when T1 used ADPCM

Harry Nyquist

Nyquist rate

Heavy metal flouride

It is a fiber optic material that is used in manufacturing low
loss and long wavelength.

Hematologic Syndrome

Exposure to 200 to 1000 rad will result in ___

High Insertion Loss

Not a disadvantage of AWG

High Reuse Factor

Better reuse factor

Hot Standby

Has a dedicated back up or spare channel


Invented the MRI

HSV model

Use with Hue, Saturation, Brightness

Huffman Coding

Data compression scheme that uses fewer bits


Highly engaged communicator

ID 1

ID specification 85.6 x 53.98 used for credit cards, atm, etc

ID 3

ID specification 125mm x 85mm used for passports…

ID 2

105 x 74 mm, used in German ID cards



IEC (International
Electrotechnical Commission)

International organization that sets

Infrared Transmitter

transmitter that emits energy in the infrared spectrum


dopant, achieve wide bandwidth

InGaAsP Diode

PIN diode is important in detecting light in fiber optic
system. A PIN diode that is use in 900 nm and when the responsivity
requirement is high. Dopant that achieve bandwidth.


Original message won’t be change

Interleave 2 of 5

Numeric data of bar code

International Gateway

X.75 recommendation of Packet Switched of Data Network (PSDN).


More powerful than most non‐government organization

It is fast ATM speed

Not true about fast user network interface (FUNI)

It is implemented as 802.11b

Not true about OFDM

John McCarthy

Coined the term Artificial Intelligence in 1956



Keystone distortion

Distortion occur in scanning n rectilinear

Leached Image Bundle

Bundle of optical fiber used in flexible endoscopes

Leaky Wave antenna

Wideband microwave antenna that radiates in a narrow beam
whose direction varies with voltage, perforated waveguide

Less than 36

OFDM … no. of DFC in one bundle

Less than or equal to 2.405

Login and Logout

Most important services offered in Session Layer

Long Duration Symbol

Key property of OFDM that makes attractive to terrestrial

Loose Tube Design

Used in outside plants and interbuilding services

Loran C

Low frequency …..

Low Tier System

Have high data rate, low loss but with only small coverage or
cell. High quality, low delay voice

Low voltage, high Current DC

In TV, solid state amplifier modules

Mach Zehndeer

NdYag, OTDR interferometer


Keyed oscillator most often used a _______ as a power


Oldest microwave tube


Match transmission in load


Light propagation follows the ____ equation.

MC 02062010

Digital Terrestrial Television (DTT)


6 MHz with snap‐on connector

Member bodies

Only have voting rights

Message nonrepudiation

Can’t deny

Message Trailer

Signals the end of a message


Data describing other data

Metal Hallide compounds,
Dopant material and Oxygen

Are oxidized to form a white silica powder called soot.

Complete List of Communications Engineering Coaching Materials

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