1-24.
What are the different
methods of operation in
ship-shore mode?
1.
Duplex, simplex, and
semiduplex
2.
Simplex, semiduplex and
triplex
3.
Duplex, semiduplex and
quadplex
4.
Simplex, duplex, triplex
and quadplex
1-25.
When you can use a
communications equipment to
both transmit and receive
simultaneously, this is
known by which of the
following terms?
1.
FSK (phase shift keying)
2.
TDM (time-division
multiplexing)
3.
FDX (full duplex)
4.
HFX (half duplex)
1-26.
What is the normal reason
that a ship would use the
simplex method?
1.
Equipment casualties
2.
Not ample equipment
onboard
3.
Abundance of circuits
online
4.
Transmission by NECOS of
a SAR request
1-27.
A ship using a simplex
system has to call up the
shore station to pass
message traffic. If the
ship cannot raise the shore
station after the second
attempt, what is the usual
procedure?
1.
Check the equipment
2.
Repeat the call-up
3.
Try standby frequency
4.
Attempt to contact
another station
1-28.
What is the purpose of the
secure voice worldwide voice
network?
1.
To be able to
communicate anywhere in
the world by voice
2.
For ships to be able to
talk to shore stations
3.
To hook together all
types of commands into
one voice network
4.
To provide secure
real-time, voice
communications between
both afloat commands and
operational commanders
using HF or satellite
connectivity
1-29.
What is the total number of
FLTCINCs that control the
network of secure voice area
control stations?
1.
One
2.
Two
3.
Three
4.
Four
4
