1
ATO2 Navy Advancement exam bank questions and
correct answers 2025.
What are the two main factors that affect the velocity of sound in seawater? -
(answers)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? - (answers)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? - (answers)Active sonobuoys
Sonobuoys equipped with an EFS system have what capability? - (answers)The
capability of selecting channel, life and depth settings
What information can a DIFAR sonobuoy provide that a LOFAR sonobuoy cannot?
- (answers)Submarine bearing.
Which of the following sonobuoys provides water temperature data? -
(answers)BT sonobuoys
The OTPI system provides what information to the USW pilot? -
(answers)Sonobuoy bearing information with respect to aircraft heading.
, 2
What type of naval aircraft employs the AN/ASQ-13F dipping sonar system? -
(answers)SH60-F
On a dipping sonar system, what component generates and transmits sound
energy into the water? - (answers)The transducer.
What does the acronym IFF stands for? - (answers)Identification Friend or Foe
What are the three basic steps in the identification process of a typical IFF
system? - (answers)Challenge, decode, and reply
True or False. All naval aircraft contain an interrogator system. - (answers)False
What is the pulse spacing of Mode 1? - (answers)2.9 to 3.1 microseconds
Of the six modes of IFF operation, which one is used by military and civilian
aircraft control stations? - (answers)Mode 3/A
What mode IFF is the military encrypted mode? - (answers)Mode 4
What is the transmission frequency of the interrogator? - (answers)1030MHz
, 3
In a typical IFF/SIF system, what total number of codes can be selected in Mode
2? - (answers)4096
The Identification of Position (I/P) pulse is used for what purpose? - (answers)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? -
(answers)Mode 2
Where are Modes 1 and 3/A selected on the AN/APX-72 transponder set? -
(answers)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? - (answers)The Transponder Test Set TS-1843/APX
The AN/APX-72 generates a signal of what frequency when interrogated? -
(answers)1090 MHz
The interrogator works in conjunction with what other aircraft system? -
(answers)The radar.
What component of the interrogator set is used to select SIF reply codes for
Modes 1, 2, and 3/A? - (answers)C-7383/APX-76(V) control box
ATO2 Navy Advancement exam bank questions and
correct answers 2025.
What are the two main factors that affect the velocity of sound in seawater? -
(answers)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? - (answers)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? - (answers)Active sonobuoys
Sonobuoys equipped with an EFS system have what capability? - (answers)The
capability of selecting channel, life and depth settings
What information can a DIFAR sonobuoy provide that a LOFAR sonobuoy cannot?
- (answers)Submarine bearing.
Which of the following sonobuoys provides water temperature data? -
(answers)BT sonobuoys
The OTPI system provides what information to the USW pilot? -
(answers)Sonobuoy bearing information with respect to aircraft heading.
, 2
What type of naval aircraft employs the AN/ASQ-13F dipping sonar system? -
(answers)SH60-F
On a dipping sonar system, what component generates and transmits sound
energy into the water? - (answers)The transducer.
What does the acronym IFF stands for? - (answers)Identification Friend or Foe
What are the three basic steps in the identification process of a typical IFF
system? - (answers)Challenge, decode, and reply
True or False. All naval aircraft contain an interrogator system. - (answers)False
What is the pulse spacing of Mode 1? - (answers)2.9 to 3.1 microseconds
Of the six modes of IFF operation, which one is used by military and civilian
aircraft control stations? - (answers)Mode 3/A
What mode IFF is the military encrypted mode? - (answers)Mode 4
What is the transmission frequency of the interrogator? - (answers)1030MHz
, 3
In a typical IFF/SIF system, what total number of codes can be selected in Mode
2? - (answers)4096
The Identification of Position (I/P) pulse is used for what purpose? - (answers)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? -
(answers)Mode 2
Where are Modes 1 and 3/A selected on the AN/APX-72 transponder set? -
(answers)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? - (answers)The Transponder Test Set TS-1843/APX
The AN/APX-72 generates a signal of what frequency when interrogated? -
(answers)1090 MHz
The interrogator works in conjunction with what other aircraft system? -
(answers)The radar.
What component of the interrogator set is used to select SIF reply codes for
Modes 1, 2, and 3/A? - (answers)C-7383/APX-76(V) control box
