Question 1

What are the number of contacts in a RJ-61x jack?

Accepted Answer

A) 4 
B) 6 
C) 8 
D) 10 
A) 4 
B) 6 
C) 8 
D) 10

Question 2

Which of the following statements about Universal Powerline Bus, or UPB, is not true?

Accepted Answer

A) UPB uses a 40-volt transmission line. 
B) UPB supports up to 64,000 addresses. 
C) UPB has a transmission reliability of over 99 percent. 
D) UPB is slower than PLC. 
A) UPB uses a 40-volt transmission line. 
B) UPB supports up to 64,000 addresses. 
C) UPB has a transmission reliability of over 99 percent. 
D) UPB is slower than PLC.

Question 3

Which of the following is an upper limit of the threshold capacitance above which you should consider replacing the capacitance?

Accepted Answer

A) 50 pF/ft 
B) 200 pF/ft 
C) 100 pF/ft 
D) 500 pF/ft 
A) 50 pF/ft 
B) 200 pF/ft 
C) 100 pF/ft 
D) 500 pF/ft

Question 4

Which of the following EIA/TIA standards specifies transmission performance standards testing a UTP cable?

Accepted Answer

A) 568a 
B) 570 
C) 568b 
D) TSB 67 
A) 568a 
B) 570 
C) 568b 
D) TSB 67

Question 5

Which of the following devices is used to extend the attenuation point of a cable segment?

Accepted Answer

A) Hub 
B) Bridge 
C) Switch 
D) Repeater 
A) Hub 
B) Bridge 
C) Switch 
D) Repeater

Question 6

Reactance is an electrical property of an audio system. Which of the following forms reactance in an audio system?

Accepted Answer

A) Resistance and Inductance 
B) Resistance and Capacitance 
C) Inductance and Capacitance 
D) Resistance and Impedance 
A) Resistance and Inductance 
B) Resistance and Capacitance 
C) Inductance and Capacitance 
D) Resistance and Impedance

Question 7

Identify the device shown in the image.

Accepted Answer

A) Tone generator 
B) Multi-meter 
C) Network Card 
D) Ethernet Adapter 
A) Tone generator 
B) Multi-meter 
C) Network Card 
D) Ethernet Adapter

Question 8

Identify the testing device shown in the image.

Accepted Answer

A) Cable Tester 
B) Tone Generator 
C) Punch down tool 
D) Banana plug tester 
A) Cable Tester 
B) Tone Generator 
C) Punch down tool 
D) Banana plug tester

Question 9

Which of the following specifies the life expectancy of a compact fluorescent lamp?

Accepted Answer

A) 200 hours 
B) 2,500 hours 
C) 10,000 hours 
D) 500 hours 
A) 200 hours 
B) 2,500 hours 
C) 10,000 hours 
D) 500 hours

Question 10

If three terminations are present on a video loop, what percentage of the signal will arrive at a display device?

Accepted Answer

A) 100 percent 
B) 75 percent 
C) 50 percent 
D) 25 percent 
A) 100 percent 
B) 75 percent 
C) 50 percent 
D) 25 percent

Question 11

By what factor should the amplifier's output be increased to have a 100 dB increase in speaker output?

Accepted Answer

A) Two 
B) Three 
C) Five 
D) Ten 
A) Two 
B) Three 
C) Five 
D) Ten

Question 12

Identify the connector type shown in the image.

Accepted Answer

A) HDMI 
B) S-video 
C) DVI 
D) F-type 
A) HDMI 
B) S-video 
C) DVI 
D) F-type

Question 13

Which of the following is a place where you should ideally place a thermostat?

Accepted Answer

A) On an outside wall 
B) Near an electrical device 
C) In direct sunlight 
D) On an inside wall 
A) On an outside wall 
B) Near an electrical device 
C) In direct sunlight 
D) On an inside wall

Question 14

Which of the following test devices are used to verify the pin-to-pin connectivity between two ends of a cable?

Accepted Answer

A) TDR 
B) Wiremap 
C) Multimeter 
D) Tone generator 
A) TDR 
B) Wiremap 
C) Multimeter 
D) Tone generator

Question 15

Which of the following specifies the acoustic sensitivity rating of an average speaker?

Accepted Answer

A) 90 dB/Wm 
B) 80 dB/Wm 
C) 87 dB/Wm 
D) 100 dB/Wm 
A) 90 dB/Wm 
B) 80 dB/Wm 
C) 87 dB/Wm 
D) 100 dB/Wm

Question 16

Which of the following is a characteristic of a cable that states the distance at which the signal traveling on a cable begins to weaken?

Accepted Answer

A) Cancellation 
B) Crosstalk 
C) Interference 
D) Attenuation 
A) Cancellation 
B) Crosstalk 
C) Interference 
D) Attenuation

Question 17

Which of the following is the characteristic of a cable where a signal in one channel leaks into another channel and distorts the signal?

Accepted Answer

A) Attenuation 
B) Interference 
C) Crosstalk 
D) Cancellation 
A) Attenuation 
B) Interference 
C) Crosstalk 
D) Cancellation

Question 18

Which of the following types of coaxial cable shielding is used to resist Radio Frequency Interference?

Accepted Answer

A) Dielectric 
B) Foil 
C) Wire mesh 
D) Wire braid 
A) Dielectric 
B) Foil 
C) Wire mesh 
D) Wire braid

Question 19

Which of the following statements about NTSC and PAL are not true?

Accepted Answer

A) NTSC uses a fixed resolution of 525 horizontal lines and PAL uses 625 horizontal lines. 
B) NTSC displays 30 frames per second and PAL displays at 25 frames per second. 
C) PAL is a higher resolution format for DVD than NTSC. 
D) Movies on NTSC DVDs play back 4% faster than their PAL counterparts. 
A) NTSC uses a fixed resolution of 525 horizontal lines and PAL uses 625 horizontal lines. 
B) NTSC displays 30 frames per second and PAL displays at 25 frames per second. 
C) PAL is a higher resolution format for DVD than NTSC. 
D) Movies on NTSC DVDs play back 4% faster than their PAL counterparts.

Question 20

Which of the following is a commonly used compression technique in analog cameras?

Accepted Answer

A) MPEG 
B) ACC 
C) JPEG 
D) CIF 
A) MPEG 
B) ACC 
C) JPEG 
D) CIF

Exam 17: Dhti

What are the number of contacts in a RJ-61x jack?

Which of the following statements about Universal Powerline Bus, or UPB, is not true?

Which of the following is an upper limit of the threshold capacitance above which you should consider replacing the capacitance?

Which of the following EIA/TIA standards specifies transmission performance standards testing a UTP cable?

Which of the following devices is used to extend the attenuation point of a cable segment?

Reactance is an electrical property of an audio system. Which of the following forms reactance in an audio system?

Identify the device shown in the image.

Identify the testing device shown in the image.

Which of the following specifies the life expectancy of a compact fluorescent lamp?

If three terminations are present on a video loop, what percentage of the signal will arrive at a display device?

By what factor should the amplifier's output be increased to have a 100 dB increase in speaker output?

Identify the connector type shown in the image.

Which of the following is a place where you should ideally place a thermostat?

Which of the following test devices are used to verify the pin-to-pin connectivity between two ends of a cable?

Which of the following specifies the acoustic sensitivity rating of an average speaker?

Which of the following is a characteristic of a cable that states the distance at which the signal traveling on a cable begins to weaken?

Which of the following is the characteristic of a cable where a signal in one channel leaks into another channel and distorts the signal?

Which of the following types of coaxial cable shielding is used to resist Radio Frequency Interference?

Which of the following statements about NTSC and PAL are not true?

Which of the following is a commonly used compression technique in analog cameras?

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