JTIDS- Post Test 2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Which of the following is a function provided by the Link 16 terminal's JREAP C connection? -
CORRECT ANSWER - J-Series messages using JREAP C protocol
How many frames are in an epoch in Link 16 communications? - CORRECT ANSWER -
*NOT* 112.5
What are the two types of JTIDS/MIDS RF connectivity? - CORRECT ANSWER - Direct
connectivity and indirect connectivity
Link 16 line-of-sight connectivity is limited by what type of signal propagation? - CORRECT
ANSWER - Direct wave propagation
Which JTIDS/MIDS access technique allows a common group of timeslots to be used for the
same function but on different operating selectable nets? - CORRECT ANSWER - Stacked
Nets
Which JTIDS/MIDS access technique is not operator selectable and allows different groups of
users to exchange information in different Network Participation Groups (NPGs)? - CORRECT
ANSWER - Multi-nets
Which of the following IS NOT determined by the Transmission Security (TSEC) variable in
Link 16? - CORRECT ANSWER - *NOT* Symbol interleaving start point
In which Link 16 security mode is a discrete Crypto Variable Logic Labels (CVLLs) assigned to
only the TSEC which is used for message encryption as well? - CORRECT ANSWER -
*NOT* Partition Variable Mode (PVM)
What numbers are used by a network designer as Crypto Variable Logic Labels (CVLLs)? -
CORRECT ANSWER - 1 - 127
, Which of the following is a purpose of the Network Description Document (NDD) COMSEC
Cross Reference Table? - CORRECT ANSWER - Assigns Crypto Variable Logic Labels
(CVLLs) to Secure Data Unit (SDU) locations for each platform
The JANUS Table can be used to determine the _______________ for a specific calendar day. -
CORRECT ANSWER - Current Crypto Period Designator (CCPD)
TRUE or FALSE: MIDS Step Down requires that fighters load no more than two crypto keys for
each network. - CORRECT ANSWER - True
Which OPTASK LINK set allows the JICO to provide whether a specific date is a 0 or 1 day? -
CORRECT ANSWER - *NOT* JCRYPDAT
All Link 16 equipped systems must have an approved __________ entry in order to operate. -
CORRECT ANSWER - DD Form 1494
What measurement is used to express the pulse density of all Link 16 transmissions in a 12
second frame? - CORRECT ANSWER - Time Slot Duty Factor (TSDF)
Which source document is used to determine foreign JTIDS/MIDS EMC restrictions? -
CORRECT ANSWER - JTIDS/MIDS Multinational Ad Hoc Spectrum Support Working
Group Notebook
Which of the following MIDS LVTs can transmit at 1000 watts and is also known as MIDS-on-
Ship (MOS)? - CORRECT ANSWER - MIDS LVT (5)
What is the purpose of a Link 16 terminal's Secure Data Unit (SDU)? - CORRECT
ANSWER - *NOT* Stores Initialization Data Load (IDL) files
Exam Questions and CORRECT Answers
Which of the following is a function provided by the Link 16 terminal's JREAP C connection? -
CORRECT ANSWER - J-Series messages using JREAP C protocol
How many frames are in an epoch in Link 16 communications? - CORRECT ANSWER -
*NOT* 112.5
What are the two types of JTIDS/MIDS RF connectivity? - CORRECT ANSWER - Direct
connectivity and indirect connectivity
Link 16 line-of-sight connectivity is limited by what type of signal propagation? - CORRECT
ANSWER - Direct wave propagation
Which JTIDS/MIDS access technique allows a common group of timeslots to be used for the
same function but on different operating selectable nets? - CORRECT ANSWER - Stacked
Nets
Which JTIDS/MIDS access technique is not operator selectable and allows different groups of
users to exchange information in different Network Participation Groups (NPGs)? - CORRECT
ANSWER - Multi-nets
Which of the following IS NOT determined by the Transmission Security (TSEC) variable in
Link 16? - CORRECT ANSWER - *NOT* Symbol interleaving start point
In which Link 16 security mode is a discrete Crypto Variable Logic Labels (CVLLs) assigned to
only the TSEC which is used for message encryption as well? - CORRECT ANSWER -
*NOT* Partition Variable Mode (PVM)
What numbers are used by a network designer as Crypto Variable Logic Labels (CVLLs)? -
CORRECT ANSWER - 1 - 127
, Which of the following is a purpose of the Network Description Document (NDD) COMSEC
Cross Reference Table? - CORRECT ANSWER - Assigns Crypto Variable Logic Labels
(CVLLs) to Secure Data Unit (SDU) locations for each platform
The JANUS Table can be used to determine the _______________ for a specific calendar day. -
CORRECT ANSWER - Current Crypto Period Designator (CCPD)
TRUE or FALSE: MIDS Step Down requires that fighters load no more than two crypto keys for
each network. - CORRECT ANSWER - True
Which OPTASK LINK set allows the JICO to provide whether a specific date is a 0 or 1 day? -
CORRECT ANSWER - *NOT* JCRYPDAT
All Link 16 equipped systems must have an approved __________ entry in order to operate. -
CORRECT ANSWER - DD Form 1494
What measurement is used to express the pulse density of all Link 16 transmissions in a 12
second frame? - CORRECT ANSWER - Time Slot Duty Factor (TSDF)
Which source document is used to determine foreign JTIDS/MIDS EMC restrictions? -
CORRECT ANSWER - JTIDS/MIDS Multinational Ad Hoc Spectrum Support Working
Group Notebook
Which of the following MIDS LVTs can transmit at 1000 watts and is also known as MIDS-on-
Ship (MOS)? - CORRECT ANSWER - MIDS LVT (5)
What is the purpose of a Link 16 terminal's Secure Data Unit (SDU)? - CORRECT
ANSWER - *NOT* Stores Initialization Data Load (IDL) files
