1d IFF Mode 4&5 Systems Flashcards
This is the ability to identify and distinguish between allied forces and foes
IFF
IFF consists of two modes what are they
Mode 4 & 5
A way to remember this is IFF = IF(Four)F(five)
This mode has the 1st crypto secure positive ID
Mode 4
This mode has improved crypto secure positive ID
Mode 5
Which mode uses electronic method only to distribute keys
Mode 5 
Which mode uses electronic and paper to distribute keys 
Mode 4
The EKMS has how many tiers 
4
What is tier 0
(Feds) National security agency 
Produce codes
What is tier 1
Central office of record
Bean counters, admin
(Think of Franco because he is the number one Beaner around here) 😂😂
What is tier 2
Local management devices & key processors
Local base COMSEC
What is tier 3
Data transfer device DTD (me)
There are 5 total keys, three of which are of both mode 4 and 5. What are they?
TEK - TeK code
ECU KEK - box we keep code in
TrKEK - key to unlock the code
There are 5 total keys, two of which are “mode 5” only keys. What are they?
JOSEKI A- generated by NSA distributed via the EKMS
JOSEKI B - embedded in the ECU
What color is the unencrypted key
Red
What color is the encrypted key
Black 
There are two types of ECU’s.
Type A and B. Explain both-
Type A - non-tagged, 31 days
Type B - tagged, 93 days
The time span for an individual key lasts how long
24 hours long
Keys are synced across DoD to? 
Greenwich Mean Time 
Explain the mode 4 and 5 equipment
APX–123 / UPX-41 type A (non tagged)
KIV-77 & KIV-78 type B (tagged)
