Communications Engineering Coaching Materials: Section 4 Module 5

(Last Updated On: December 8, 2017)

Communications Coaching Materials: Section 4 Module 5

This is the Section 4 Module 5 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 5


Mobile Switching Center

Base station to telephone Central Office

Modal noise

Interference due to different modes

MOSFET transistor

High reliability for power amplification in TV

Move the feed

To eliminate the feed horn

MPEG 1

What video standard deals with low data rate video such as are
often found in CD‐ROMs, and on the internet?

MPEG 2

Broadcaster’s Choice

MPEG 4

The current digital video specification that used video
compression

MPEG 4 and MPEG 7

Object‐based

Nanofiber

Silica Waveguides where the diameter is smaller than the
transmitted light.

Narrow viewing angle

Disadvantage of using LED

Near field communication

Short range communication for devices within 10cm to 4in

Network Layer

Routing selectivity

Not Fast ATM

FUNI

Not standardized by 802.11b

OFDM

Number Record Printer

May "number" ‘to sa tanong

Numerical Aperture
Mismatch

Contributes most in loss

OFDM

Used in wireless USB

Offset the horn to the center
of the

Eliminate the feedhorn shadow

Open Shortest Path First (OSPF) Protocol

A routing
protocol for Internet Protocol (IP) networks. It uses a link state routing
algorithm and falls into the group of interior routing protocols, operating
within a single autonomous system (AS).

Optical Soliton

a pulse
that travels without distortion due to dispersion

Optimal viewing distance

Optimal viewing ratio, preferred viewing distance

Orange

Multimode fiber optic cover jacket

OFDM

A wideband modulation technique used in multiple orthogonal
carriers each modulated by pulse and amplitude.

Output Backoff (OBO)

Derated from normal analog …

Output Backoff (OBO)

Most important parameter(?) in digital TV transmitter

OUTSIDE EXTENSION

Telephone system outside the building

Outside Extension

Separated from main station

Overwritten every 30
minutes

In avionics, "black box" is used in navigation for
recording purposes. Black box is ____.

Parallelor Flash A/D
conversion

A/D conversion use in high‐speed application such as video signal
processing, medical imaging and radar detection system.

Phase Correction

Correct the phase

Phonocardiograph

A graph showing the sounds of the heart

Physical Layer

Transmission of bits

PolarCoordinate Navigation System

Indicates bearing and distance

Port Operation System

Maritime mobile communication system in or near a port

Port Operations System

Ppicture or Predictive
picture

Motion … and prediction

Production Telecine

Used in production of TV program and commercial

Provides no security since the signal can be
easily
intercepted

Which is not true about wireless fiber?

Proximity Cards

Generic name for contactless integrated circuit device used as
payments

Proximity Cards

used for security access and payment systems

QAM

Amplitude and phase modulation

Quality

The UTP cable can be determine by cable _______

Radar shadow

Areas covered from radar coverage example hills..

Radiates equally

Why circle?

Radio direction finder indication (RDFI)

Shore effect causes an error in ____.

Reflective Star Coupler

It is the enlarge section of fiber with numerous… on the other
end mirrored surface and reflective mechanism on the other end.

Registered Jack

RJ means

Relay Mechanism

Difference between Iridium and Globalstar

REVERSE LINK

Mobile to base station

RG 58/U

Cable wire with highest attenuation at 400 MHz

RG 58/U

Highest attenuation at 400 MHz

Ribbon Cable Design

Also called Loose tube

Ribbon Cable Design

Poorest water blocking capabilities

Ribbon Design

Laid in ribbon of group of 12, 12 meters high

RJ 45

Most commonly used UTP cable

Roentgen

Measure of amount of x ‐ ray radiation to create 2.09×10^8 ion pairs at STP

Septate Waveguide

One or more septa

Signal Quality Detector

Pin 21 of RS232

Complete List of Communications Engineering Coaching Materials

Communications Engineering Coaching Materials: Section 4 Module 5
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