DSC and Distress Alerts Quiz
1. What is the primary purpose of the DSC (Digital Selective Calling) system?
To make voice communication clearer.
To automatically send distress signals.
To facilitate routine messages.
To control the frequency bands used for communication.
2. What type of communication does DSC primarily support?
Distress and safety communication.
Commercial messages.
Voice communication only.
Weather updates.
3. How is a DSC distress alert transmitted?
By using voice radio transmission.
Through an automated encoded digital message.
By manually dialing an emergency number.
By flashing light signals.
4. Which of the following is an essential requirement to send a DSC distress alert?
The vessel must be within range of a coastal station.
The DSC radio must have a valid MMSI number.
The vessel must be on a designated emergency channel.
The vessel must be stationary.
5. What does MMSI stand for in relation to DSC?
Maritime Mobile Service Identity.
Maritime Management System Interface.
Mobile Maritime Safety Information.
Maritime Modular System Identifier.
6. What should a vessel do after receiving a DSC distress alert?
Ignore it as it’s likely a false alert.
Acknowledge the alert and prepare to provide assistance.
Broadcast a distress signal of your own.
Continue with normal operations without any action.
7. What is the highest priority message type in the DSC system?
Distress.
Safety.
Routine.
Urgency.
8. Which of the following messages has a priority immediately after distress messages?
Urgency.
Safety.
Routine.
Administrative.
9. In which channel should a DSC distress alert be sent?
Channel 70.
Channel 16.
Channel 6.
Channel 13.
10. How can a vessel acknowledge a DSC distress alert?
By transmitting a voice message.
By sending a DSC acknowledgement signal.
By changing the vessel’s course.
By visually signaling with lights.
11. What is the most common reason for a false distress alert?
Human error, such as a button being pressed accidentally.
A malfunction in the distress signaling system.
Miscommunication during routine transmissions.
A deliberate false alarm.
12. What should be done if a false distress alert is received?
Confirm the alert, then cancel it immediately.
Ignore the alert and continue normal operations.
Respond with another distress alert.
Investigate and report the incident to authorities.