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单选题
The concept of NAVTEX is of a（）system for the broadcast and reception of MSI.
A
complete service
B
partial controlled
C
quite new
D
total co-ordinated
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单选题Three IS-IS routers on a broadcast segment have different priority values configured. Which router is elected the DIS on that broadcast segment?（）A
the router with the lowest priorityB
the router with the highest priorityC
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单选题The coordinated broadcast and automated reception of MSI via the INMARSAT EGC system using English to meet the requirements of the SOLAS Convention:（）.A
international NAVTEX ServiceB
FleetNET ServiceC
SafetyNet ServiceD
WWNWS
考题
单选题The principal advantage of NAVTEX radio warnings is that（）.A
they can be used by mariners who do not know Morse codeB
only an ordinary FM radio is necessary to receive these warningsC
information on a given topic is only broadcast at specified timesD
they cover a broad spectrum of the radio band allowing reception on almost any type of receiver
考题
多选题Which two statements best describes the role of a router on a broadcast domain?（）ARouters facilitate communications within a broadcast domain.BRouters facilitate communications between broadcast domains.CRouters are used to break up broadcast domains into separate networks.DRouters are used to connect small broadcast domains and form larger more efficient broadcast domains
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单选题The terrestrial system of GMDSS consists of（）.A
radio-telephony, DSC, Direct Printing Telegraphy,Navtex and SARTB
INMARSAT, DSC, Direct Printing Telegraphy, Navtex and SARTC
radio-telephony,DSC,EPLRB,Navtex and SARTD
Status Recording system,DSC,Direct Printing Telegraphy, Navtex and SART
考题
单选题International Navtex service is（）.A
a terrestrial MF systemB
a satellite communication systemC
a land HF radio systemD
a coastal VHF system
考题
单选题（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.A
SafetyNETB
NAVTEXC
NAVAREAD
VHF R/T
考题
单选题The concept of NAVTEX is of a（）system for the broadcast and receipt of MSI.A
search and rescueB
safeC
co-ordinatedD
hydrographic
考题
单选题A major advantage of the NAVTEX system when compared to other systems is that（）.A
the information can be received on an ordinary FM radioB
warnings are printed out for reading when convenientC
broadcasts are at scheduled timesD
a low frequency band is used for long distance transmission
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单选题International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.A
518B
2182C
156.8D
2187.5
考题
单选题BBS的全称是（ ）。A
B1og board systemB
Bulletin broadcast serviceC
B1og broadcast serviceD
Bulletin board system
考题
单选题SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.A
DSCB
EPIRBC
EGCD
NBDP
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