lesson 2

Question 1

CLASSIFICATION OF ELECTRONIC
COMMUNICATION

Answer 1

1. Modes of transmission
2. Intelligence signal transmitted
3. Baseband or modulatio

Question 2

Information is travelled in one
direction

Answer 2

SIMPLEX (SX)

Question 3

Two way communication

Answer 3

DUPLEX

Question 4

Only one parties can transmit at a time

Answer 4

A.HALF DUPLEX

Question 5

Both parties may transmit and receive simultaneously

Answer 5

B.FULL DUPLEX

Question 6

It is possible to transmit and receive
simultaneously, but not necessarily
between the same two location
Are used almost exclusively with data
communication circuits

Answer 6

C.FULL/FULL DUPLEX

Question 7

Is a continuously varying
voltage or current

Answer 7

A.ANALOG

Question 8

Are binary pulses or codes

Answer 8

B.DIGITAL

Question 9

An information signal that is often directly transmitted over the communication medium
Is used to modulate a higher frequency carrier signal then is transmitted by
radio

Answer 9

BASEBAND SIGNAL

Question 10

the process of having an information
signal modify a carrier signal in some
way

Answer 10

MODULATION

Question 11

Also know as detection
It is the recovering of originally
transmitted signal

Answer 11

DEMODULATION

Question 12

Is the process of transmitting two or more
signals simultaneously over the same channel

Answer 12

MULTIPLEXING