ATO2 Navy Advancement exam with 100%
verified correct answers latest update
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)
verified correct answers latest update
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)
