GMDSS. FCC Test 16

Which of the following statements concerning DSC equipment is true?

The GMDSS Radio Operator is responsible for properly selecting HF DSC guard channels.
All of the above.
The vessel's navigational position must be updated, either automatically or manually, no less often that every four (4) hours.
All equipment must be type accepted.

A DSC Distress alert:

DSC transmissions are encoded:

DSC transmissions are received:

Properly formatted DSC transmissions can request which of the following emissions for follow on communications?

What is the action that a GMDSS Radio Operator should take when a DSC distress alert is received?

The Operator should immediately set continuous watch on the radiotelephone frequency that is associated with frequency band on which the distress alert was received.
The Operator should immediately set continuous watch on VHF channel 70.
The Operator should immediately set continuous watch on the NBDP frequency that is associated with frequency band on which the distress alert was received.
No action is necessary, as the DSC control unit will automatically switch to the NBDP follow-on communications frequency.

What does the DSC control unit do if the GMDSS Radio Operator fails to insert updated information when initiating a DSC distress alert?

It will initiate the DSC distress alert, but any station receiving it will have to establish contact with the distressed vessel to determine its identity, position, and situation.
It will initiate the DSC distress alert but, as no information will be transmitted, rescue personnel will not be able to identify the vessel, its position, or its situation.
It will initiate the DSC distress alert, and default information will automatically be transmitted.
It will abort the transmission and set off an audible alarm that must be manually reset.

When sending a DSC call:

Vessel?s position will automatically be sent.
Vessel?s MMSI will indicate its ocean region.
None of these.
Vessel?s position will automatically be sent if the vessel is sending a ?Distress Hot Key? alert.

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