EW Mod

Counter Remote IED Electromagnetic (CREW) systems are an example of ____

A. Electromagnetic Protection

B. Electromagnetic Attack

C. Electromagnetic Support

D. Offensive Cyber

Where does the CEMA cell reside at the Brigade and Division level?

A. S2/G2

B. S6/G6

C. S3/G3

D. S4/G4

A changing magnetic field creating a current in a wire is an example of ____

a. Convection

b. Induction

c. Voltage

d. Conduction

Which of the following Field Manuals cover Cyberspace operations and Electromagnetic Warfare?

a. FM 3-13

b. FM 3-18

c. FM 3-12

d. FM 3-14

A targeted signal transmits at 600 MHz, which of the following antenna lengths would be the most resonant for receiving this frequency

a. 20cm

b. 30cm

c. 25cm

d. 12.5 cm

EM waves move at what speed?

a. Sound

b. 1000 MPH

c. Light

d. Mach 10

Which of the following best describes the relationship between an EM wave's wavelength and frequency?

a. As the wavelength decreases, the frequency decreases

b. As the wavelength increases, the frequency stays the same

c. The wavelength is always half the frequency

d. As the wavelength decreases, the frequency increases

The power of an enemy transmitter is 3dB more powerful than your radio which is rated at 50W. How much power does the enemy radio produce?

a. 53W

b. 100W

c. 500W

d. 150W

A radio with a normal gain of 2dB transmits a signal to another radio with a normal gain of 0dB. The receiving radio has a directional antenna with a gain of 10dBi. The path of transmission results in a 3dB degradation of signal. What is the total gain for this radio link?

a. 9dB

b. 12dB

c. 15dB

d. 6dB

Which of the following frequency bands have the shortest wave lengths?

a. VHF

b. HF

c. UFHd. SHF

Emissions Control (EMCOM) and terrain masking are examples of _____.

a. Electromagnetic Protection

b. Electromagnetic Support

c. Electromagnetic Attack

d. Mission Command

Counter Remote IED Electromagnetic Warfare (CREW) systems are an example of _____.

a. Electromagnetic Protection

b. Electromagnetic Attack

c. Electromagnetic Support

d. Offensive Cyber

The polarization of an EM wave is determined by which of the following?

a. The Magnetic field

b. The Direction of travel

c. The Frequency

d. The Electric Field

The process of Mixing a carrier wave with another wave in order to create a resultant wave with embed information is best described as _____.

a. Modulation

b. Amplification

c. Gain

d. Duplex

The range of frequencies that a single radio channel occupies is called the ____.

a. Spacing

b. Bandwidth

c. Area

d. Link

Which of the following best describes a Software Defined Radio?

a. A radio with specific components designed for a specific mission.

b. A web-based radio app run on a server

c. A basic but versatile radio that use a computer's software to simulate many traditional hardware components.

d. A modular radio that allows easy substitution of various hardware components.

The first recorded use of Electromagnetic Warfare in combat occurred in which year.

a. 1904

b. 1930

c. 1945

d. 1965

The frequency band just below visible light that is responsible for such phenomena as night vision, is known as the ____ band.

a. HF

b. VHF

c. Ultraviolet

d. Infrared

Actions such as jamming, probing, and intrusion are classified under which EW mission?

a. Electromagnetic Attack

b. Electromagnetic Protection

c. Electromagnetic Support

d. Electromagnetic Offense

A radio network that allows communication back and forth at the same time is known as ____.

a. Simplex

b. Broadcast

c. Full Duplex

d. Half Duplex