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Intro to Fundamentals Flashcards

1
Q

The OPSEC Process

A
  1. Identify CRITICAL INFORMATION
  2. Analyze THREATS
  3. Analyze VULNERABILITIES
  4. Assess the RISKS
  5. Apply COUNTERMEASURES
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2
Q

Communications System Process

A
  1. Information Source
  2. Transmitter
  3. Medium/Channel
  4. Receiver
  5. Information Destination
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3
Q

[comms system] Information Source

A
  • audio
  • video
  • data
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4
Q

[comms system] Transmitter

A
  • analog

- digital

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5
Q

[comms system] Medium/Channel

A
  • wired
  • optical fiber
  • wireless
  • structure borne
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6
Q

[comms system] Medium/Channel (considerations)

A
  • Amplification
  • Noise
  • Attenuation
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7
Q

[comms system] Receiver

A
  • analog

- digital

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8
Q

[comms system] Information Destination

A
  • audio
  • video
  • data
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9
Q

Multiplexing

A
  1. Frequency Division
  2. Time Division
  3. Code Division
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10
Q

Mechanical

A

An energy wave front that requires a medium to propagate.

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11
Q

Electrical

A

An electrical potential between two conductors; requires conductors to propogate.

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12
Q

Electromagnetic

A

Does not require a medium; the signal is in the electromagnetic fields in free space.

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13
Q

Transducer

A

Any device that converts one form of energy to another.

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14
Q

Time Domain

A

Amplitude (y) and Time (x)

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15
Q

Frequency Domain

A

Amplitude (y) and Frequency (x)

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16
Q

Hertz

A

Cycles per second

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17
Q

Relationship between frequency and period

A

They are INVERSELY related

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18
Q

Wavelength (m)

A

300 / Frequency

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19
Q

Frequency (Hz)

A

300 / Wavelength

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20
Q

Phase

A

A signal shift in time; given in degress.

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21
Q

Time Domain Measurements

A

Amplitude, period, and phase

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22
Q

L band

A

1-2 GHz

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23
Q

S band

A

2-4 GHz

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24
Q

C band

A

4-8 GHz

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25
X band
8-12 GHz
26
Ku band
12-18 GHz
27
K band
18-26 GHz
28
Ka band
26-40 GHz
29
V band
40-75 GHz
30
W band
75-111 GHz
31
Longitudinal Waves
Vibrate in the direction of progogation.
32
Transverse Waves
Vibrate at right angles to the direction of propogation.
33
50Ω (transmission line impedance)
- Radio receivers - Signal processing equipment - Amplifiers - Antenna
34
75Ω (transmission line impedance)
TV cable and receivers
35
300Ω (transmission line impedance)
Broadcast FM antennas
36
Splitter vs. T-connector
Splitter
37
Impedance
Defined by a cable's capacitance and inductance.
38
Capacitance and Inductance
- diameter of conductors - distance between conductors - dielectric between conductors
39
Transition point from Near to Far Field
5 wavelengths (λ)
40
6 dB loss
Doubled the distance
41
3 dB loss
Distance increased 50%
42
6 dB gain
Halved the distance
43
3 dB gain
Quartered the distance
44
Formula for Power
P = 1 / d^2
45
Receiver at 90° off transmitter
Results in dB reduction
46
Checking voltage in AC-mode
Never reads a negative value
47
Flitering
Removing unwanted frequency
48
Change Detection (to compare changes)
- Differential | - Flip-flop
49
Bias
A tendency, inclination, or prejudice toward or against something or someone.
50
Heuristics
Mental shortcuts that allow people to solve problems and make judgements quickly and efficiently.
51
Critical Thinking questions
- What do I know? - What don't I know? - What do I need to know? - What is missing that I expect to see?
52
Procedural Guide 1
Conduct a survey.
53
Procedural Guide 2
Requirements for reporting and testing penetrations.
54
Procedural Guide 3
Requirements for reporting hazards.
55
Multipath
Multiple paths of signal between transmitter and receiver due to reflection, scattering, and diffraction.
56
As-built Drawings (complete)
All changes + change orders + red line drawings
57
Floor Plan
View from above
58
Plane
A horizontal section through a building
59
Key Components of IDS
- Keypads - Contacts/sensors - Panel/controller - Annunciator
60
Defensive OPSEC Considerations
- Critical Information - Threats - Vulnerabilites
61
Offensive OPSEC Considerations
- Available Information - Technical Feasibility - Access

Electronics (13 decks)

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