3-P-097: INMARSAT Communications Systems-2
3-97P1:
What is the best description for the INMARSAT-C system?
It is a store-and-forward system that provides routine and distress communications.
It provides slow speed telex and voice service.
It is a real-time telex system.
It provides world-wide coverage.
3-97P2:
The INMARSAT mini-M system is a:
Satellite system utilizing spot beams to provide for small craft communications.
Marine SONAR system.
Marine global satellite system.
Marine depth finder.
3-97P3:
What statement best describes the INMARSAT-B services?
Voice at 16 kbps, Fax at 14.4 kbps and high-speed Data at 64/54.
Store and forward high speed data at 36/48 kbps.
Voice at 3 kHz, Fax at 9.6 kbps and Data at 4.8 kbps.
Service is available only in areas served by highly directional spot beam antennas.
3-97P4:
Which INMARSAT systems offer High Speed Data at 64/54 kbps?
B, M4 and Fleet.
C.
B and C.
Mini-M.
3-97P5:
When INMARSAT-B and INMARSAT-C terminals are compared:
INMARSAT-C antennas are small and omni-directional, while INMARSAT-B antennas are larger and directional.
INMARSAT-B antennas are bulkier but omni-directional, while INMARSAT-C antennas are smaller and parabolic, for aiming at the satellite.
INMARSAT-B antennas are parabolic and smaller for higher gain, while INMARSAT-C antennas are larger but omni-directional.
INMARSAT-C antennas are smaller but omni-directional, while INMARSAT-B antennas are parabolic for lower gain.
3-97P6:
What services are provided by the INMARSAT-M service?
Voice at 6.2 kbps, Data at 2.4 kbps, Fax at 2.4 kbps and e-mail.
Data and Fax at 4.8 kbps plus e-mail.
Voice at 3 kHz, Fax at 9.6 kbps and Data at 4.8 kbps.
Data at 4.8 kbps and Fax at 9.6 kbps plus e-mail.
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