ATO2 Navy Advancement Exam Questions
and answers 2025
What .are .the .two .main .factors .that .affect .the .velocity .of .sound .in .seawater? .-
.CORRECT .ANSWER-The .temperature .and .salinity .of .the .water.
A .sound .wave .traveling .from .an .area .of .warm .water .into .an .area .of .cold .water
.will .be .affected .in .what .way? .- .CORRECT .ANSWER-It .will .bend .toward .the .area
.of .cold .water.
Sonobuoys .that .transmit .an .acoustic .pulse .and .detect .a .resulting .echo .are
.classified .as .what .type .of .sonobuoy? .- .CORRECT .ANSWER-Active .sonobuoys
Sonobuoys .equipped .with .an .EFS .system .have .what .capability? .- .CORRECT
.ANSWER-The .capability .of .selecting .channel, .life .and .depth .settings
What .information .can .a .DIFAR .sonobuoy .provide .that .a .LOFAR .sonobuoy
.cannot? .- .CORRECT .ANSWER-Submarine .bearing.
Which .of .the .following .sonobuoys .provides .water .temperature .data? .-
.CORRECT .ANSWER-BT .sonobuoys
The .OTPI .system .provides .what .information .to .the .USW .pilot? .- .CORRECT
.ANSWER-Sonobuoy .bearing .information .with .respect .to .aircraft .heading.
What .type .of .naval .aircraft .employs .the .AN/ASQ-13F .dipping .sonar .system? .-
.CORRECT .ANSWER-SH60-F
,On .a .dipping .sonar .system, .what .component .generates .and .transmits .sound
.energy .into .the .water? .- .CORRECT .ANSWER-The .transducer.
What .does .the .acronym .IFF .stands .for? .- .CORRECT .ANSWER-Identification
.Friend .or .Foe
What .are .the .three .basic .steps .in .the .identification .process .of .a .typical .IFF
.system? .- .CORRECT .ANSWER-Challenge, .decode, .and .reply
True .or .False. .All .naval .aircraft .contain .an .interrogator .system. .- .CORRECT
.ANSWER-False
What .is .the .pulse .spacing .of .Mode .1? .- .CORRECT .ANSWER-2.9 .to .3.1
.microseconds
Of .the .six .modes .of .IFF .operation, .which .one .is .used .by .military .and .civilian
.aircraft .control .stations? .- .CORRECT .ANSWER-Mode .3/A
What .mode .IFF .is .the .military .encrypted .mode? .- .CORRECT .ANSWER-Mode .4
What .is .the .transmission .frequency .of .the .interrogator? .- .CORRECT .ANSWER-
1030MHz
In .a .typical .IFF/SIF .system, .what .total .number .of .codes .can .be .selected .in
.Mode .2? .- .CORRECT .ANSWER-4096
The .Identification .of .Position .(I/P) .pulse .is .used .for .what .purpose? .- .CORRECT
.ANSWER-It .is .used .to .identify .a .specific .friendly .aircraft .among .other .friendly
.aircraft .that .reply .with .the .same .code.
What .mode .of .IFF .is .set .prior .to .takeoff .by .maintenance .personnel? .-
.CORRECT .ANSWER-Mode .2
, Where .are .Modes .1 .and .3/A .selected .on .the .AN/APX-72 .transponder .set? .-
.CORRECT .ANSWER-By .thumbwheel .switches .on .the .front .of .the .control .box.
What .part .of .the .APX-72 .system .provides .for .ground .or .in-flight .transponder
.testing .capability? .- .CORRECT .ANSWER-The .Transponder .Test .Set .TS-
1843/APX
The .AN/APX-72 .generates .a .signal .of .what .frequency .when .interrogated? .-
.CORRECT .ANSWER-1090 .MHz
The .interrogator .works .in .conjunction .with .what .other .aircraft .system? .-
.CORRECT .ANSWER-The .radar.
What .component .of .the .interrogator .set .is .used .to .select .SIF .reply .codes .for
.Modes .1, .2, .and .3/A? .- .CORRECT .ANSWER-C-7383/APX-76(V) .control .box
What .component .monitors .the .timing .triggers, .pre-triggers, .gates, .and .test
.video .and .causes .the .fault .indicator .lamp .on .the .interrogator .control .to
.illuminate .when .a .fault .has .been .detected .within .the .system? .- .CORRECT
.ANSWER-Electronic .Synchronizer .SN-416/APX-76(V)
The .APX-100 .transponder .set .is .available .in .what .number .of .configurations? .-
.CORRECT .ANSWER-The .system .comes .in .two .configurations.
To .respond .to .Mode .4 .interrogations, .the .IFF .transponder .set .system .requires
.what .additional .components? .- .CORRECT .ANSWER-Transponder .Computer
.KIT-1/TSEC
What .APX-100 .system .is .referred .to .as .the .rack-mounted .configuration? .-
.CORRECT .ANSWER-Receiver/Transmitter .RT-1157/APX-100
Who .is .responsible .for .safety? .- .CORRECT .ANSWER-All .hands.
What .precaution .should .you .take .before .removing .a .fuse? .- .CORRECT
.ANSWER-De-energize .the .circuit
and answers 2025
What .are .the .two .main .factors .that .affect .the .velocity .of .sound .in .seawater? .-
.CORRECT .ANSWER-The .temperature .and .salinity .of .the .water.
A .sound .wave .traveling .from .an .area .of .warm .water .into .an .area .of .cold .water
.will .be .affected .in .what .way? .- .CORRECT .ANSWER-It .will .bend .toward .the .area
.of .cold .water.
Sonobuoys .that .transmit .an .acoustic .pulse .and .detect .a .resulting .echo .are
.classified .as .what .type .of .sonobuoy? .- .CORRECT .ANSWER-Active .sonobuoys
Sonobuoys .equipped .with .an .EFS .system .have .what .capability? .- .CORRECT
.ANSWER-The .capability .of .selecting .channel, .life .and .depth .settings
What .information .can .a .DIFAR .sonobuoy .provide .that .a .LOFAR .sonobuoy
.cannot? .- .CORRECT .ANSWER-Submarine .bearing.
Which .of .the .following .sonobuoys .provides .water .temperature .data? .-
.CORRECT .ANSWER-BT .sonobuoys
The .OTPI .system .provides .what .information .to .the .USW .pilot? .- .CORRECT
.ANSWER-Sonobuoy .bearing .information .with .respect .to .aircraft .heading.
What .type .of .naval .aircraft .employs .the .AN/ASQ-13F .dipping .sonar .system? .-
.CORRECT .ANSWER-SH60-F
,On .a .dipping .sonar .system, .what .component .generates .and .transmits .sound
.energy .into .the .water? .- .CORRECT .ANSWER-The .transducer.
What .does .the .acronym .IFF .stands .for? .- .CORRECT .ANSWER-Identification
.Friend .or .Foe
What .are .the .three .basic .steps .in .the .identification .process .of .a .typical .IFF
.system? .- .CORRECT .ANSWER-Challenge, .decode, .and .reply
True .or .False. .All .naval .aircraft .contain .an .interrogator .system. .- .CORRECT
.ANSWER-False
What .is .the .pulse .spacing .of .Mode .1? .- .CORRECT .ANSWER-2.9 .to .3.1
.microseconds
Of .the .six .modes .of .IFF .operation, .which .one .is .used .by .military .and .civilian
.aircraft .control .stations? .- .CORRECT .ANSWER-Mode .3/A
What .mode .IFF .is .the .military .encrypted .mode? .- .CORRECT .ANSWER-Mode .4
What .is .the .transmission .frequency .of .the .interrogator? .- .CORRECT .ANSWER-
1030MHz
In .a .typical .IFF/SIF .system, .what .total .number .of .codes .can .be .selected .in
.Mode .2? .- .CORRECT .ANSWER-4096
The .Identification .of .Position .(I/P) .pulse .is .used .for .what .purpose? .- .CORRECT
.ANSWER-It .is .used .to .identify .a .specific .friendly .aircraft .among .other .friendly
.aircraft .that .reply .with .the .same .code.
What .mode .of .IFF .is .set .prior .to .takeoff .by .maintenance .personnel? .-
.CORRECT .ANSWER-Mode .2
, Where .are .Modes .1 .and .3/A .selected .on .the .AN/APX-72 .transponder .set? .-
.CORRECT .ANSWER-By .thumbwheel .switches .on .the .front .of .the .control .box.
What .part .of .the .APX-72 .system .provides .for .ground .or .in-flight .transponder
.testing .capability? .- .CORRECT .ANSWER-The .Transponder .Test .Set .TS-
1843/APX
The .AN/APX-72 .generates .a .signal .of .what .frequency .when .interrogated? .-
.CORRECT .ANSWER-1090 .MHz
The .interrogator .works .in .conjunction .with .what .other .aircraft .system? .-
.CORRECT .ANSWER-The .radar.
What .component .of .the .interrogator .set .is .used .to .select .SIF .reply .codes .for
.Modes .1, .2, .and .3/A? .- .CORRECT .ANSWER-C-7383/APX-76(V) .control .box
What .component .monitors .the .timing .triggers, .pre-triggers, .gates, .and .test
.video .and .causes .the .fault .indicator .lamp .on .the .interrogator .control .to
.illuminate .when .a .fault .has .been .detected .within .the .system? .- .CORRECT
.ANSWER-Electronic .Synchronizer .SN-416/APX-76(V)
The .APX-100 .transponder .set .is .available .in .what .number .of .configurations? .-
.CORRECT .ANSWER-The .system .comes .in .two .configurations.
To .respond .to .Mode .4 .interrogations, .the .IFF .transponder .set .system .requires
.what .additional .components? .- .CORRECT .ANSWER-Transponder .Computer
.KIT-1/TSEC
What .APX-100 .system .is .referred .to .as .the .rack-mounted .configuration? .-
.CORRECT .ANSWER-Receiver/Transmitter .RT-1157/APX-100
Who .is .responsible .for .safety? .- .CORRECT .ANSWER-All .hands.
What .precaution .should .you .take .before .removing .a .fuse? .- .CORRECT
.ANSWER-De-energize .the .circuit
