INTRODUCTION TO JOINT MULTI TDL NETWORK
MTN OPERATIONS ACTUAL FINAL PAPER 2025/2026
QUESTIONS WITH ANSWERS GRADED A+
✔✔Amplification (AMPN) sets, Narrative (NARR) sets, General Text (GENTEXT) sets,
✔✔Which of the following IS NOT true about an NTRE in an External Time Reference
Network (ETRN)? - ✔✔Will always have a time quality (QT) of 15
✔✔Subscriber functions are the actions, other than maintenance, that are required to
maintain Link 16 network operations and include net number selection,
________________, and Network Participation Status, or NPS. - ✔✔Platform indicators
✔✔Which of the following IS NOT a terminal interrupt? - ✔✔Relay Delay
✔✔Which document will the JICO use to provide instructions on settings and
procedures about operational network entry and exit? - ✔✔OPTASK LINK
✔✔What is the output of the Network Information Exchange Requirements (IER)
Definition step in the Network Management System? - ✔✔Link 16 Network Request
Form sent to the Network Design Facility (NDF)
✔✔What is the purpose of the Network Design step in the Network Management
System? - ✔✔Selection, modification, or creation of the network design
✔✔What is the output of the Network Planning step in the Network Management
System? - ✔✔OPTASK LINK message
✔✔Which of the following IS NOT a consideration in the selection of a Link 16 network
design? - ✔✔Provides Satellite Access Authorization
✔✔What is the legal Link 16 surveillance track number value range? - ✔✔00001 -
ZZ777
✔✔Which of the following OPTASK LINK sets IS NOT part of the LNKXVI (Link 16
Segment)? - ✔✔LNKPROT
✔✔Where will the operator find the Initialization Data Load (IDL) file assignment for their
platform? - ✔✔OPTASK LINK
✔✔Where can the network time base for a Link 16 network be found? - ✔✔OPTASK
LINK
,✔✔What is required for a Link 16 terminal to obtain coarse synchronization? -
✔✔Reception of one error free J0.0 Initial Entry Message (IEM)
✔✔A ____________ will use RTT exchanges to maintain and improve synchronization.
- ✔✔Primary User (PRU)
✔✔Which statement/statements is true regarding GEOGRID and RELGRID operations?
- ✔✔GEOGRID is always present and is based on the World Geodetic System 1984
(WGS-84)
✔✔Which statement/statements is true about the RELGRID? - ✔✔RELGRID operations
require all units to use the same GRID ORID
✔✔In which section of MIL-STD-6016 DoD Interface Standard Tactical Data Link (TDL)
16 Message Standard can a complete list of all J-Series messages and legal values be
found? - ✔✔Section 5: Detailed Requirements
✔✔Which type of Link 16 network is based off GPS time corrected to UTC? -
✔✔External Time Reference Network (ETRN)
✔✔Which statement/statements regarding PPLI processing is accurate? - ✔✔Geometry
and time within the link will improve position quality
✔✔JREAP was developed due to the need to communicate data over long distances
without degradation to the message format or content. JREAP takes the message from
the format it was originally formatted in and changes the protocol so that the message
can be transmitted over Beyond Line-of-Sight media - ✔✔true
✔✔Which of the following encryption devices are used by JREAP A/ - ✔✔KIV-7
KG-84A
✔✔JREAP B supports which of the following roles: - ✔✔Peer-to-Peer
✔✔JREAP C typically operates unencrypted - ✔✔false
✔✔Which field in this set represents uplink frequency in megahertz? - ✔✔410.450
✔✔Which of the following is the primary transmission protocol in SADL - ✔✔TDMA
✔✔Match each SAL time Slot component with its description - ✔✔The variable time
delay in the start of a transmission- Jitter
A specific pattern that allows the receiving terminal to synchronize to the transmission-
preamble
, used by the receiving terminals to improve the phase angle to match that of the
transmitter- time refinement
the message information- data
time allowed for the message to transmit outward- propagation
✔✔The standard frequency band for SADL is? - ✔✔420-450 MHz
✔✔a SADL radio requires which types of cryptographic keys to be loaded in order to
operate? - ✔✔Transmission Security (TSK)
Key Encryption Key (KEK)
Traffic Encryption Key (TEK)
✔✔A SADL time slot consists of the following components - ✔✔Jitter
Propagation
Preamble
✔✔A SADL network may be employed in several ways. Match each SADL network type
with its characteristics - ✔✔Used to exchange data between SADL and the MTN-
Gateway
Primarily air-to-air information exchange with no interface to the MTN- Air-to-Air
Used for VMF exchange between SADL and Army TI- Air-to-Ground
✔✔to deconflict multiple SADL Air-to-Air networks operating in the same geographic
area, different _______ must be selected - ✔✔Air Keys
✔✔Which are the basic characteristics of Link 11 - ✔✔Netted
Half-Duplex
Secure
✔✔Select the encryption device(s) used for Link 11. Select all that apply. - ✔✔KG-40
SG-50
✔✔Which Link 11 OPTASK LINK set would an operator use to provide circuit function
and frequency information specific to a TDL - ✔✔data link frequency information set
✔✔Which of these Link 11B exchange media is the most common medium used? -
✔✔Landlines
✔✔A unit communicating directly on Link 11B - ✔✔RU
✔✔A RU that is forwarding data between two or more RUs - ✔✔FRU
✔✔AJU communicating on both Link 11B and Link 16 while forwarding information
between participants on those links - ✔✔FJUB
MTN OPERATIONS ACTUAL FINAL PAPER 2025/2026
QUESTIONS WITH ANSWERS GRADED A+
✔✔Amplification (AMPN) sets, Narrative (NARR) sets, General Text (GENTEXT) sets,
✔✔Which of the following IS NOT true about an NTRE in an External Time Reference
Network (ETRN)? - ✔✔Will always have a time quality (QT) of 15
✔✔Subscriber functions are the actions, other than maintenance, that are required to
maintain Link 16 network operations and include net number selection,
________________, and Network Participation Status, or NPS. - ✔✔Platform indicators
✔✔Which of the following IS NOT a terminal interrupt? - ✔✔Relay Delay
✔✔Which document will the JICO use to provide instructions on settings and
procedures about operational network entry and exit? - ✔✔OPTASK LINK
✔✔What is the output of the Network Information Exchange Requirements (IER)
Definition step in the Network Management System? - ✔✔Link 16 Network Request
Form sent to the Network Design Facility (NDF)
✔✔What is the purpose of the Network Design step in the Network Management
System? - ✔✔Selection, modification, or creation of the network design
✔✔What is the output of the Network Planning step in the Network Management
System? - ✔✔OPTASK LINK message
✔✔Which of the following IS NOT a consideration in the selection of a Link 16 network
design? - ✔✔Provides Satellite Access Authorization
✔✔What is the legal Link 16 surveillance track number value range? - ✔✔00001 -
ZZ777
✔✔Which of the following OPTASK LINK sets IS NOT part of the LNKXVI (Link 16
Segment)? - ✔✔LNKPROT
✔✔Where will the operator find the Initialization Data Load (IDL) file assignment for their
platform? - ✔✔OPTASK LINK
✔✔Where can the network time base for a Link 16 network be found? - ✔✔OPTASK
LINK
,✔✔What is required for a Link 16 terminal to obtain coarse synchronization? -
✔✔Reception of one error free J0.0 Initial Entry Message (IEM)
✔✔A ____________ will use RTT exchanges to maintain and improve synchronization.
- ✔✔Primary User (PRU)
✔✔Which statement/statements is true regarding GEOGRID and RELGRID operations?
- ✔✔GEOGRID is always present and is based on the World Geodetic System 1984
(WGS-84)
✔✔Which statement/statements is true about the RELGRID? - ✔✔RELGRID operations
require all units to use the same GRID ORID
✔✔In which section of MIL-STD-6016 DoD Interface Standard Tactical Data Link (TDL)
16 Message Standard can a complete list of all J-Series messages and legal values be
found? - ✔✔Section 5: Detailed Requirements
✔✔Which type of Link 16 network is based off GPS time corrected to UTC? -
✔✔External Time Reference Network (ETRN)
✔✔Which statement/statements regarding PPLI processing is accurate? - ✔✔Geometry
and time within the link will improve position quality
✔✔JREAP was developed due to the need to communicate data over long distances
without degradation to the message format or content. JREAP takes the message from
the format it was originally formatted in and changes the protocol so that the message
can be transmitted over Beyond Line-of-Sight media - ✔✔true
✔✔Which of the following encryption devices are used by JREAP A/ - ✔✔KIV-7
KG-84A
✔✔JREAP B supports which of the following roles: - ✔✔Peer-to-Peer
✔✔JREAP C typically operates unencrypted - ✔✔false
✔✔Which field in this set represents uplink frequency in megahertz? - ✔✔410.450
✔✔Which of the following is the primary transmission protocol in SADL - ✔✔TDMA
✔✔Match each SAL time Slot component with its description - ✔✔The variable time
delay in the start of a transmission- Jitter
A specific pattern that allows the receiving terminal to synchronize to the transmission-
preamble
, used by the receiving terminals to improve the phase angle to match that of the
transmitter- time refinement
the message information- data
time allowed for the message to transmit outward- propagation
✔✔The standard frequency band for SADL is? - ✔✔420-450 MHz
✔✔a SADL radio requires which types of cryptographic keys to be loaded in order to
operate? - ✔✔Transmission Security (TSK)
Key Encryption Key (KEK)
Traffic Encryption Key (TEK)
✔✔A SADL time slot consists of the following components - ✔✔Jitter
Propagation
Preamble
✔✔A SADL network may be employed in several ways. Match each SADL network type
with its characteristics - ✔✔Used to exchange data between SADL and the MTN-
Gateway
Primarily air-to-air information exchange with no interface to the MTN- Air-to-Air
Used for VMF exchange between SADL and Army TI- Air-to-Ground
✔✔to deconflict multiple SADL Air-to-Air networks operating in the same geographic
area, different _______ must be selected - ✔✔Air Keys
✔✔Which are the basic characteristics of Link 11 - ✔✔Netted
Half-Duplex
Secure
✔✔Select the encryption device(s) used for Link 11. Select all that apply. - ✔✔KG-40
SG-50
✔✔Which Link 11 OPTASK LINK set would an operator use to provide circuit function
and frequency information specific to a TDL - ✔✔data link frequency information set
✔✔Which of these Link 11B exchange media is the most common medium used? -
✔✔Landlines
✔✔A unit communicating directly on Link 11B - ✔✔RU
✔✔A RU that is forwarding data between two or more RUs - ✔✔FRU
✔✔AJU communicating on both Link 11B and Link 16 while forwarding information
between participants on those links - ✔✔FJUB
