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单选题
The source of energy fitted in GMDSS complying vessels must be（）.
A
the main source of energy
B
emergency source of electrical power
C
the reserve source of energy
D
all of above
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单选题For GMDSS，which statement concerning a compulsory vessel is FALSE?（）A
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单选题Which statement concerning reserve sources of energy for GMDSS is FALSE（）.A
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单选题Which statement concerning GMDSS Radio Operator requirements is FALSE（）.A
Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at seaB
Each compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as wellC
Communications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communicationsD
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单选题In PIM-SM what control plane signaling must a multicast source perform before it begins to send multicast traffic to a group？（）A
The source must send a PIM Register message to the rendezvous point （RP）B
The source must first join the multicast group using IGMP before sendingC
The source must perform a Request to Send （RTS） and Clear to Send （CTS） handshake with the PIM designated router （DR）D
No control plane signaling needs to be performed；the source can simply begin sending on the local subnet
考题
单选题On which vessels is GMDSS required? （）A
All vessels capable of international voyagesB
Vessels operating outside of the range of VHF coastal radio stationsC
SOLAS Convention ships of 300 gross tonnage or moreD
Coastal vessels of less than 300 gross tons
考题
单选题What is a GMDSS functional or carriage requirement for compulsory vessels?（）A
A compulsory vessel must carry at least two (2) licensed GMDSS operatorsB
A compulsory vessel must satisfy certain equipment carriage requirements that are determined by where the vessel sailsC
A compulsory vessel must be able to transmit and respond to distress alertsD
All of the above
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