IN ANSWERING QUESTIONS 3-20 THROUGH
3-25, SELECT FROM FIGURE 3B THE
OPERATING MODE DESCRIBED IN THE
QUESTION.
3-20.
3-21.
3-22.
3-23.
3-24.
What Link-11 operating mode
establishes a uniform time base
from which all net
communications are normally
initiated?
1. A
2. B
3. C
4. D
In what Link-11 operating mode
is each picket unit
interrogated, in turn, by NCS?
1. A
2. B
3. C
4. D
What Link-11 operating mode
provides an overall evaluation
of net and equipment
performance?
1. B
2. C
3. D
4. E
In what Link-11 operating mode
will one participating unit
transmit data continuously to
all other net members?
1. C
2. D
3. E
4. F
In what Link-11 operating mode
are the radio set key line and
data terminal audio output
inhibited?
1. C
2. D
3. E
4. F
3-25.
In what Link-11 operating mode
is a single data transmission
sent only when the operator
depresses the TRANSMIT START
button?
1. B
2. C
3. D
4. E
3-26.
Net Sync continuously
broadcasts which of the
following signals?
1.
Phase reference frames
2.
Start codes
3.
Stop code
4.
Preamble frames
3-27.
When the stored sync mode is
operating, the picket station
uses which of the following
signals to establish a time
base?
1. An external frequency
standard
2.
The internal frequency
standard in the DTS
3.
The sync signal received
from NCS
4.
The sync signal received
from another picket
3-28.
Which of the following
functions is NOT tested when
Net Test is running?
1.
DTS to radio interface
2.
CDS computer to DTS
interface
3. Radio to antenna interface
4. Radio receiver function
3-29.
The preamble of a Link-11
message consists of a total of
how many frames?
1.
Five
2.
Six
3.
Seven
4.
Eight
3-30.
During transmission of the
preamble, the 605-Hz tone is
transmitted at which of the
following power levels?
1.
- 6 d B
2.
+ 6 d B
3.
-12 dB
4.
+12 dB
13
