Vol2 Ure3 CDC 3D153
This is to be used as a study aid for CDC 3D153 RF transmission systems.
- 1.(221) Any military action involving the use of the electromagnetic (EM) spectrum to include directed energy to attack an enemy is called?
- A.
Electronic support (ES)
- B.
Electronic warfare (EW)
- C.
Electromagnetic Pulse (EMP)
- D.
Electromagnetic Interference (EMI)
- 2.(221) Which is not an example of electronic protection (EP)?
- A.
Frequency agility in a radio
- B.
Communications intelligence
- C.
Electronic and material shielding for systems
- D.
Process to counter meaconing, interference, jamming, and intrustion
- 3.(221) Which electronic warfare (EW) component responds to taskings to search for, intercept, identify, and locate intentional and unintentional sources of radiated energy?
- A.
Electronic Attack (EA)
- B.
Electronic control (EC)
- C.
Electronic support (ES)
- D.
Electronic protection (EP)
- 4.(222) Electromagnetic (EM) deception as it applies to electronic warfare (EW) is?
- A.
Controlling the information an enemy
- B.
The elimination of some or all of an adversary's electronic defenses
- C.
The deliberate radiation of EM energy intended to convey misleading information to an enemy
- D.
Degrading or interfering with the enemy's use of the EM spectrum to limit the enemy's combat capabilities
- 5.(223) What is the process of unscrambling encrypted information so that it is intelligible?
- A.
Decryption
- B.
Encryption
- C.
Cryptography
- D.
Cryptanalysis
- 6.(224) How many selectable traffic key slots does the KG–84A have?
- A.
1
- B.
2
- C.
4
- D.
8
- 7.(224) Which switch on the KY–57 VINSON zeroizes channels one through five?
- A.
Fill
- B.
Mode
- C.
Power
- D.
Volume
- 8.(225) The common name for the method of changing the encryption keys over the radio channel in a two-way radio system is called?
- A.
Over-the-air rekeying (OTAR)
- B.
Asymmetric
- C.
Symmetric
- D.
Off-line
- 9.(225) Centralized control of encryption keys will not reduce?
- A.
Procedural problems
- B.
Operational problems
- C.
Security problems
- D.
Safety problems
- 10.(226) In frequency hopping (FH) operation, the interval at which each transmitter remains on a given frequency for a specific time is known as the?
- A.
Dwell time
- B.
Hopping rate
- C.
Frequency offset
- D.
Transmitter velocity
- 11.(227) Which RT–1523 SINCGARS subassembly removes synchronization and frequency hopping information that is embedded in a receive signal?
- A.
The interleaver
- B.
The modulator
- C.
The demodulator
- D.
The exciter power amplifier module
- 12.(227) The RT–1523 SINCGARS radio’s time sync and correlator module manipulates control signal outputs during the frequency hopping (FH) mode to?
- A.
Stop frequency shifts during receive operations
- B.
Shut down reception only during frequency shifts
- C.
Shut down transmission only during frequency shifts
- D.
Shut down reception and transmission during frequency shifts
- 13.(228) Concerning HAVE QUICK II communications (MWOD), how long can each word of day (WOD) be used?
- A.
Each WOD is used until it is manually changed
- B.
For a total of 3 days
- C.
For 48 hours
- D.
For 24 hours
- 14.(229) Which one of the following statement is not a characteristic of the AN/GRC–171B(V)4 transceiver?
- A.
It operates from 116MHz to 149.975 MHz
- B.
It provides antijam communications in amplitude modulation (AM) and frequency modulation (FM)
- C.
It contatins both HAVE QUICK and HAVE QUICK II
- D.
It can communicate on any one of 7,000 available channels
- 15.(229) What does the low-pass filter of the AN/GRC–171B(V)4 transceiver perform?
- A.
Image frequency rejection in receive and harmonic attenuation in transmit
- B.
Image frequency rejection in transmit and harmonic attenuation in receive
- C.
RF decoupling in transmit and harmonic suppression in receive
- D.
RF decoupling in receive and harmonic suppression in transmit
- 16.(229) The output power of the AN/GRC–171B(V)4 transceiver is?
- A.
25 Watts in both amplitude modulation (AM) and frequency modulation (FM)
- B.
20 Watts in AM, 50 Watts in FM
- C.
20 Watts in AM, 20 Watts in FM
- D.
50 Watts in narrowband, 25 watts in wideband
- 17.(230) The Joint Tactical Information Distribution System (JTIDS) is commonly referred to as?
- A.
Link 4A
- B.
Link 11
- C.
Link 16
- D.
Link 22
- 18.(231) Which service uses the Enhanced Position Location Reporting System (EPLRS) to locate and track amphibious assault craft?
- A.
Army
- B.
Navy
- C.
Air Force
- D.
Marines
- 19.(231) What type of network radio does the Air Force use for close air support?
- A.
Single Channel Ground and Airborne Radio system (SINCGARS)
- B.
Enhanced Position Location Reporting System (EPLRS)
- C.
Joint Tactical Information Distribution System (JTIDS)
- D.
Situation Awareness Data Link (SADL)
- 20.(232) How many programmable devices can the multiband inter/intra team radio hold?
- A.
3
- B.
5
- C.
7
- D.
10
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