Communications

Question 1

All communications systems must satisfy four basic

requirements to be effective:

Answer 1

Reliability, security, speed, flexibility

Question 2

What are the six types of communication?

Answer 2

radio, wire, messenger, data, sound, visual

Question 3

COMSEC is divided into four areas: ‘PETC’

Answer 3

Transmission, Emission, Physical and Crypto.

Question 4

What are the three communication spectrum/frequencies?

Answer 4

HF high freq 2-29.999
VHF Low 30-89.999
VHF high 90.999-224.999
UHF SATCOM 225-511.999

Question 5

__________ is a family of lightweight combat radios that serves as the primary means of communications for command, control,
and fire support on the battlefield. The system provides high security against enemy electronic warfare by using frequency-hopping capability.
communications security (COMSEC

Answer 5

SINCGARS Single Channel Ground Air Radio System

Question 6

The five variables required to frequency hop are?

Answer 6

Hop Set
TSK Transmission Security Key
TEK Transmission Electronic Key
Time
Net ID

Question 7

Essential elements of friendly information (EEFIs) are
specific items of information that, if disclosed, could have a
negative impact on friendly operations. What are the EEFI?

Answer 7

Position. 
Capabilities. 
Operations. 
Friendly electronic warfare. 
 Personnel.
 COMSEC. 
 Wrong circuit.

Question 8

What are the preventive measures for safeguarding info in regards to electronic warfare.

Answer 8

• Reduce electronic traffic, keep minimal
• SOP/brevity codes
• thorough training
• alternate means of com
• use of crypto comsec
• approved operation codes
• scheme of maneuver

Question 9

What is the MIJI report used for and what does TUFT stand for?

Answer 9

Time of interference.
Unit affected.
Frequency or frequencies affected.
Type of interference (jamming, imitative deception, etc.)