911 Operator Test Radio Communication Protocols 5

Question 1

During a major incident, a dispatcher is told to 'go to talk-around.' What does this mean?

Accepted Answer

Switch to direct unit-to-unit radio communication without using the repeater

Answer

Talk-around (also called direct or simplex mode) bypasses the repeater system and lets units communicate directly with each other on a shared frequency.

Question 2

What is the appropriate response when a unit fails to respond to three consecutive radio calls from dispatch?

Accepted Answer

Initiate a welfare check per agency protocol

Answer

Failure to respond to repeated calls is a safety concern requiring a welfare check, as the officer may be in danger or incapacitated.

Question 3

What does the phrase 'negative contact' mean when transmitted by a field unit?

Accepted Answer

The unit was unable to locate or make contact with the subject or location

Answer

Negative contact means the officer arrived at the scene or attempted to reach a subject but was unable to locate them or make contact.

Question 4

What is the primary reason dispatchers should avoid using 'ten-codes' in NIMS-compliant communications?

Accepted Answer

Ten-codes vary by agency and can cause confusion during multi-agency responses

Answer

NIMS promotes plain language because ten-codes differ between agencies, creating dangerous miscommunications when multiple agencies work together.

Question 5

A unit transmits 'Show me Code 4, no further assistance needed.' What is the dispatcher's responsibility at this point?

Accepted Answer

Acknowledge the transmission and update the unit's status in CAD

Answer

The dispatcher should acknowledge the Code 4 transmission and update the Computer-Aided Dispatch system to reflect the unit's current status.

911 Operator Test Practice Test

911 Operator Test Practice Test

911 Operator Test Radio Communication Protocols 5