Test 1

Question 1

Which type of jack allows a security system to seize the phone line during an alarm condition?

Answer 1

RJ-31x

The RJ-31x jack disconnects all phones in the home during an alarm so the system can contact the monitoring facility.

Question 2

In fiber optics, what is a ‘mode’?

Answer 2

A single electromagnetic field pattern (or light ray) that travels through the fiber

Question 3

Which statement about fiber optic cables is true?

Answer 3

The core is surrounded by optical material called the jacket, which traps the light using total internal reflection.

Question 4

What is the correct definition of cladding in a fiber optic cable?

Answer 4

The outer optical layer that traps light in the core and guides it through bends

Question 5

Which statement is true regarding optical power and loss measurements?

Answer 5

All of the above

Optical power is measured in dBm, referenced to one milliwatt. Loss is a relative measurement, while optical power is an absolute measurement.

Question 6

What is a fiber amplifier?

Answer 6

EDFA

Question 7

How is bandwidth defined in fiber optic systems?

Answer 7

The range of signal frequencies or bit rates a fiber optic system can support

Question 8

What term refers to the lowest illumination level at which a camera can still capture an image of an object?

Answer 8

Minimum subject illumination

Question 9

Under current NFPA 72, which is true about smoke detectors in older residential buildings?

Answer 9

Older homes may still use battery-powered detectors if allowed by local codes

Question 10

What color typically identifies a single-mode fiber optic cable?

Answer 10

Yellow

Question 11

What is considered an advantage of optical fiber pigtail splicing?

Answer 11

It provides factory-certified connector termination.

Question 12

Which testing system is most commonly used to measure total fiber insertion loss?

Answer 12

OLTS – Optical Loss Test System

Question 13

Which feature adjusts image brightness to ensure subjects are visible when backlit?

Answer 13

Backlight compensation

Question 14

What are the two primary materials used to manufacture the core of fiber optic cables?

Answer 14

Glass and polymer

Question 15

Which tool is used to fuse or weld two optical fibers together?

Answer 15

Fusion splicer

Question 16

Which type of sensor detects movement by sensing variations in far-infrared radiation?

Answer 16

Passive Infrared (PIR) Sensor

Question 17

Why are telecommunications and CATV providers switching to fiber?

Answer 17

All of the above

Fiber has much higher bandwidth and can transmit signals much farther without repeaters.

Question 18

Which is a common fiber optic connector?

Answer 18

All of the above

SC, LC, and MPO are widely used connectors in fiber optic systems.

Question 19

What principle allows light to propagate through the core of a fiber optic cable?

Answer 19

Reflection of light

Question 20

Which tool is used to break a fiber optic cable for termination or splicing?

Answer 20

Cleaver

Question 21

What is the function of an uninterruptible power supply (UPS) in surveillance systems?

Answer 21

To provide consistent voltage during brownouts or brief outages

Question 22

What color identifies non-military multimode 50/125 micron (OM2) fiber optic cable?

Answer 22

Orange

Question 23

What is the standard unit for setting iris levels in CCTV systems?

Answer 23

I.R.E. units

Question 24

According to the Electrical Code, what is an accurate fire rating for fiber optic cables?

Answer 24

All of the above

OFNP, OFNG, OFNR are fire ratings for different uses of fiber optic cables.

Question 25

What typically causes a horizontal bar that slowly moves up the video screen?

Answer 25

Video ground loop

Question 26

CCTV is defined as:

Answer 26

A video system in which all components are directly connected within a closed transmission circuit.

Question 27

What is the primary difference between multimode and single-mode fiber?

Answer 27

Multimode has a larger core, and single-mode has a much smaller core.

Question 28

What does 'depth of field' refer to in video surveillance?

Answer 28

A zone in front of the lens that is in focus

Question 29

Which is true for most camera installations?

Answer 29

The cameras are powered either by 12 VDC or 24 VAC.

Question 30

What cable types are considered top-grade for short-run analog (CCTV) video surveillance applications?

Answer 30

RG-59 and RG-6 Coaxial Cables

Question 31

How do high-sensitivity cameras achieve greater sensitivity?

Answer 31

By using a CCD sensitive to light in the near-infrared region of the spectrum

Question 32

What color typically identifies a multi-mode fiber optic cable?

Answer 32

Orange

Question 33

What are the most common light wavelengths used in fiber optic communication?

Answer 33

All of the above ## Footnote 850 nm, 1310 nm, and 1550 nm are standard wavelengths.

Question 34

Which device allows four surveillance camera images to be viewed on a monitor simultaneously?

Answer 34

A quad switcher

Question 35

What value termination resistor is required at the end of a video signal line in CCTV systems?

Answer 35

75 ohms

Question 36

Which statement about Plastic Optical Fiber (POF) is true?

Answer 36

It is used for short, high-speed networks.

Question 37

How is a multi-core fiber cable typically protected?

Answer 37

Kevlar, steel sheath, fireproof sheath

Question 38

Infrared (IR) cameras are available in which types?

Answer 38

Pan-tilt-zoom cameras

Question 39

Which TIA/EIA standard describes requirements for residential security system cabling?

Answer 39

TIA-570-C

Question 40

What is the most common use of CCTV?

Answer 40

Security camera systems

Question 41

What component in an optical fiber receiver converts incoming optical signals into electrical signals?

Answer 41

Photodetector

Question 42

What parameter is most important for observed image detail on a monitor in video surveillance?

Answer 42

Lines of definition

Question 43

Which statement is true about wide-angle lenses?

Answer 43

They provide a wide coverage area, but subjects appear smaller.

Question 44

What type of sync pulses signal a monitor to begin displaying a new picture?

Answer 44

Vertical interval pulses

Question 45

Which digital format is known as MPEG-4 Advanced Video Coding (AVC)?

Answer 45

H.264

Question 46

Which is not a recognized cable type?

Answer 46

Flat breakout cable

Question 47

What is the safest method for soldering a cable when replacing a faulty electronic component?

Answer 47

Work in a well-ventilated area with appropriate PPE, secure the component in a clamp or helping hand, heat the joint with the soldering iron, then apply solder to the joint, not the iron.

Question 48

Which tool can locate a specific fiber optic cable at a different location?

Answer 48

Visual fault locator

Question 49

Which statement about fiber optic cables is true?

Answer 49

All of the above ## Footnote Fiber optic cables need protection, may contain numerous fibers, and indoor cables must meet fire codes.

Question 50

Which type of residential location is classified as a perimeter security location?

Answer 50

Windows and doors

Question 51

What does a visual fault locator cable continuity tester do?

Answer 51

Locates fibers, finds faults, verifies continuity and polarity

Question 52

Which of the following statements about fiber optic cables is true?

Answer 52

All of the above ## Footnote The fiber needs protection, which is provided by the cable. Cables may contain from one to hundreds of fibers. Indoor fiber cables must use special jacketing materials to meet fire codes.

Question 53

Which type of residential location is typically classified as a perimeter security location?

Answer 53

Windows and doors

Question 54

What is true regarding analog CCTV systems in modern hybrid installations?

Answer 54

The DVR converts analog signals to digital, compresses them, and stores them on a hard drive

Question 55

What is the data industry standard for multimode fiber?

Answer 55

50/125 OM2, OM3, or OM4 depending on bandwidth

Question 56

What is the core/cladding measurement and bandwidth for OM1 multimode fiber?

Answer 56

62.5/125 µm; 160 MHz·km @ 850 nm, 500 MHz·km @ 1300 nm

Question 57

What is the general power reduction for every 10 dB loss in fiber?

Answer 57

Each 10 dB loss equals 10 times less power

Question 58

What is a recommended guideline for terminating connectors in the field?

Answer 58

Change polishing film regularly to avoid buildup that can cause poor end-face finishes

Question 59

What is correct when planning a fiber installation?

Answer 59

All of the above ## Footnote Most users install more fibers than immediately needed, often adding single-mode fibers for campus or backbone use. Cable choice affects ease of installation, splicing, termination, and cost. Consult multiple cable manufacturers and provide specifications for recommendations.

Question 60

What best describes a fiber tracer?

Answer 60

An instrument that allows visual checking of continuity and tracing for correct connections

Question 61

What is a test source in fiber optic systems?

Answer 61

A device that uses a laser or LED to inject light into a fiber for loss testing

Question 62

What setup is most appropriate for distributing a +3 dBmV coaxial signal to four TVs and one cable modem without requiring an amplifier?

Answer 62

Use one 4-way splitter, then a 2-way splitter on one output for the extra device

Question 63

According to the EIA/TIA 568 standard, what is the maximum allowable optical loss for 1300 nm multimode fiber?

Answer 63

1.5 dB/km

Question 64

In CCTV and surveillance systems, what does PTZ stand for?

Answer 64

Pan Tilt Zoom

Question 65

Which pair of terms correctly describes a very brief, high-voltage event and a longer-duration rise in AC voltage?

Answer 65

Spike; Surge

Question 66

Which of the following is not a type of camera lens used in CCTV systems?

Answer 66

Parabolic reflectors

Question 67

What types of splicing are commonly used in fiber optic technology?

Answer 67

Fusion splice & Mechanical splice

Question 68

What term describes the amount of light required to obtain a reasonable image with a surveillance video camera?

Answer 68

Lux rating

Question 69

What is the analog video resolution for the QCIF format based on NTSC standards?

Answer 69

176 × 120

Question 70

Which of the following is not a core function enabled by digital multiplexing in CCTV systems?

Answer 70

Real-time slow-motion playback of recorded footage

Question 71

Why is Plastic Optical Fiber (POF) often referred to as the 'consumer' optical fiber?

Answer 71

All of the above ## Footnote The fiber and associated components are inexpensive. It resists damage and is suitable for remote sensing and multiplexing. It is commonly used in low-speed, short-distance home networks and digital appliances.

Question 72

Which statement is not true regarding cable types?

Answer 72

Horizontal cable feeds flames more readily than vertical cable

Question 73

Which of the following correctly identifies the parts of an optical fiber?

Answer 73

A = Buffer, B= Core, C = Cladding

Question 74

What types of terminations are available for multimode fibers?

Answer 74

All of the above ## Footnote Hot Melt, Epoxy/Polish, Adhesive

Question 75

What does the EIA/TIA 568 standard define?

Answer 75

All of the Above ## Footnote Structured cabling system standards for commercial and campus environments, recommended design and installation practices for cabling systems, specifications for cabling types, connectors, distances, performance, termination, and testing.

Question 76

Which of the following accurately describes grounding and surge protection practices for CCTV systems?

Answer 76

Surge protection and grounding systems are designed for equipment protection, not human safety

Question 77

Which devices detect motion by sensing changes in brightness levels within a designated detection zone?

Answer 77

Passive sensor

Question 78

Which of the following is not a tool used for the installation and termination of fiber optic cable?

Answer 78

Polishing bevel

Question 79

Which type of fiber is used to transmit visible light?

Answer 79

Multimode step-index fiber

Question 80

Twisted pair (UTP) and coaxial cable equalizers can fully compensate for picture level loss up to approximately how many feet?

Answer 80

1,000

Question 81

What is true regarding fiber optic connector installation?

Answer 81

Multimode connectors are usually installed in the field, while single-mode connectors are often spliced onto factory-made pigtails

Question 82

What is the minimum separation required between security wiring and AC power wiring when installed in parallel runs?

Answer 82

12 inches

Question 83

Which fiber optic test instrument uses backscattered light to evaluate cable integrity?

Answer 83

Optical Time Domain Reflectometer (OTDR)

Question 84

What is the unit used to measure attenuation in fiber optic systems?

Answer 84

Decibel per meter (dBm)

Question 85

How many wires are typically required to connect a passive sensor to a control panel?

Answer 85

2

Question 86

Why can monochrome cameras produce clearer images of dark objects?

Answer 86

They have lower minimum illumination requirements

Question 87

Which type of sensor is commonly used for door installations?

Answer 87

Magnetic switch

Question 88

What is a fiber stripper?

Answer 88

A precision tool used to remove the buffer coating from the fiber itself for termination

Question 89

How is the total loss of a fiber optic cable plant typically calculated?

Answer 89

(0.5 dB × number of connectors) + (0.2 dB × number of splices) + fiber loss

Question 90

What is true of IP-based CCTV systems?

Answer 90

Video is transmitted via Ethernet to the network and can be accessed remotely

Question 91

What term describes the maximum number of vertical black and white lines that can be clearly perceived by the human eye?

Answer 91

Vertical resolution