Vol1 Ure3 CDC 3D153
This is Unit Review Exercise 3 for AFSC 3D153. This is to be used as a study aid.
- 1.
(016) Which feature of the Fluke 8025A locks the measurement into the display for viewing and automatically updates the display when you take a new measurement?
- A.
Rotary Switch
- B.
Range push button
- C.
Power-up self test
- D.
Touch-hold push button
Correct Answer
D. Touch-hold push button -
- 2.
(017) Which current range on the Fluke 8025A do you select to measure 250 milliamps alternating current (AC)?
- A.
Microamps direct current (DC)
- B.
Microamps AC
- C.
Milliamps/amp DC
- D.
Milliamps/amp AC
Correct Answer
D. Milliamps/amp AC -
- 3.
(017) When testing a diode with the 8025A, the leads across a “good” diode produces an “OL” (open) on the display in one direction while reversing the leads produces?
- A.
A continuous audible tone
- B.
"SL" (short) on the display
- C.
A wavering audible tone
- D.
Three short beeps
Correct Answer
A. A continuous audible tone -
- 4.
(018) How are voltage, time, and depth represented on the oscilloscope display?
- A.
Voltage = intensity, time = vertical axis, and depth = horizontal axis
- B.
Voltage = intensity, time = horizontal axis, and depth = vertical axis
- C.
Voltage = horizontal axis, time = vertical axis, and depth = intensity
- D.
Voltage = vertical axis, time = horizontal axis, and depth = intensity
Correct Answer
D. Voltage = vertical axis, time = horizontal axis, and depth = intensity -
- 5.
(018) Which mode of triggering an oscilloscope causes a trace to be drawn on the screen at all times, whether there is an input signal or not?
- A.
Auto
- B.
Norm
- C.
External
- D.
Source
Correct Answer
A. Auto -
- 6.
(019) Which probe does not need to actually make contact with the circuit under test?
- A.
Current Probe
- B.
Passive 1:1 probe
- C.
Active (FET) probe
- D.
Passive divider, 10:1 probe
Correct Answer
A. Current Probe -
- 7.
(020) What digital storage oscilloscope circuit compensates for high sampling rates of high frequency signals?
- A.
Analog-to-digital converter
- B.
Digital-to-analog converter
- C.
Charged coupled device
- D.
Cathode-ray tube
Correct Answer
C. Charged coupled device -
- 8.
(020) Sampled data points are stored in the memory of a digital storage oscilloscope as?
- A.
Sequential records
- B.
Waveform points
- C.
Record lengths
- D.
Record points
Correct Answer
B. Waveform points -
- 9.
(020) What area of a digital storage oscilloscope takes digitized samples and performs numerous manipulations on the data including measuring rise and fall times, periods, time intervals, and math computations?
- A.
Microprocessors
- B.
Acquisition
- C.
Memory
- D.
Input
Correct Answer
A. Microprocessors -
- 10.
(020) What type of sampling does a digital storage oscilloscope normally use on single-shot or seldom-occurring signals?
- A.
Sequential
- B.
Repetitive
- C.
Real-time
- D.
Random
Correct Answer
C. Real-time -
- 11.
(020) In real-time sampling, what type of interpolation is used when measuring pulse waves?
- A.
Sine
- B.
Linear
- C.
Non-uniform
- D.
Companding
Correct Answer
B. Linear -
- 12.
(020) Which are the three types of digital storage oscilloscope acquisition modes, and which is the standard operating mode?
- A.
Sample, peak detect, averaging; sample.
- B.
Real-time, peak detect, sample; real-time.
- C.
Real-time, peak detect, sample; averaging
- D.
Sample, peak detect, averaging; peak detect
Correct Answer
A. Sample, peak detect, averaging; sample. -
- 13.
(020) In acquiring a 4K record length on a digital storage oscilloscope, how many samples can you view at one time?
- A.
1k
- B.
2k
- C.
3k
- D.
4k
Correct Answer
A. 1k -
- 14.
(021) What test equipment provides a bit error detection system that can determine the received data quality after traveling over a communications link?
- A.
Megger
- B.
Multimeter
- C.
Oscilloscope
- D.
Bit error rate (BER)
Correct Answer
D. Bit error rate (BER) -
- 15.
(021) What pattern simulator section of the bit error rate test set accepts a 48-bit parallel word and generates a serial pattern?
- A.
48-bit transmitter only
- B.
Pseudo random noise (PRN) generator
- C.
Pseudo random noise (PRN) comparator
- D.
48-bit register and 8-bit word display
Correct Answer
A. 48-bit transmitter only -
- 16.
What pattern simulator section of the bit error rate test set converts the non-return zero level (NRZ-L) data into the desired coding, such as non-return 0-mark (NRZ-M)?
- A.
Data Drivers
- B.
Code Converter
- C.
External Data Comparator
- D.
Psuedo Random Noise (PRN) Generator
Correct Answer
B. Code Converter -
- 17.
(021) What pattern syncronizer and error counter section of the bit error rate test set internally generates its own pattern to compare with the received data from the data/clock receivers?
- A.
48-transmitter only
- B.
48-bit synchronizer/comparator
- C.
External data pattern synchronizer/comparator
- D.
Pseudo ramdom noise (PRN) generator
Correct Answer
D. Pseudo ramdom noise (PRN) generator -
- 18.
(022) Which of these bit rates do you use for a bit error rate test on a 64Kbps data circuit?
- A.
511 bps
- B.
9,600 bps
- C.
64 Kbps
- D.
1.544 Mbps
Correct Answer
C. 64 Kbps -
- 19.
On the bit error rate test (BER) set, the 25-pin connectors are designed to operate with data modems to?
- A.
Simplify connection of test equipment to modem under test and to transmit the test pattern
- B.
Simplify connection of test equipment to the modem under test and to carry the necessary signaling and handshake signals for modem operations
- C.
Isolate test equipment from the data circuit under test and to transmit the test pattern
- D.
Isolate test equipment from the data circuit under test and to carry the necessary signaling and to handshake signals for modem operations
Correct Answer
B. Simplify connection of test equipment to the modem under test and to carry the necessary signaling and handshake signals for modem operations -
- 20.
System grounds must continually be tested how often?
- A.
Randomly
- B.
Periodically
- C.
Every 10 years
- D.
Just one time only
Correct Answer
B. Periodically -
- 21.
(024) A known current is generated by the earth ground tester between the earth ground electode and the ?
- A.
Grounding point
- B.
Inner earth stake Y
- C.
Auxiliary current probe
- D.
Auxiliary potential probe
Correct Answer
C. Auxiliary current probe -
- 22.
Where is voltage potential measured in the fall of potential ground testing method?
- A.
Between the auxiliary potential electrode and the earth ground electrode
- B.
Between the auxiliary current electrode and the earth ground electrode
- C.
Between the auxiliary potential and auxiliary current electrodes
- D.
Between the earth ground electrode and the outer stake Z
Correct Answer
A. Between the auxiliary potential electrode and the earth ground electrode -
- 23.
The Institute of Electrical and Electronics Engineers (IEEE) have recommended a ground resistance value of?
- A.
5 ohms or less
- B.
10 ohms or less
- C.
15 ohms or less
- D.
25 ohms or less
Correct Answer
A. 5 ohms or less -
- 24.
What component on a protocol analyzer process the frames based on the selected test and user configuration inputs?
- A.
Counter
- B.
Buffer
- C.
Central Processing Unit (CPU)
- D.
Filter
Correct Answer
C. Central Processing Unit (CPU) -
- 25.
What protocol analyzer test window provides information concerning the network utilization and frame error that are related to a specific protocol?
- A.
Media Access control (MAC) node statistics
- B.
Connection statistics
- C.
Protocol Statistics
- D.
Node discovery
Correct Answer
C. Protocol Statistics -
- 26.
What active test is selected to see the path that the packets are traveling and the time it takes the packets to complete the trip?
- A.
Pack Internetwork Groper (PING)
- B.
Trace Route
- C.
Traffic Generator
- D.
Route Generator
Correct Answer
B. Trace Route -
- 27.
What Protocol analyzer test window reports errors that occur at the physical layer such as bad fram check sequences (FSC), Short frames, and jabbers?
- A.
Bill Buchbinder "How Doom"
- B.
Media access control (MAC) node statistics
- C.
Protocol Statistics
- D.
Intertranslation through deviation of the node and all its aspects and characteristics of the node
Correct Answer
B. Media access control (MAC) node statistics -
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Current Version
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Mar 21, 2022Quiz Edited by
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Jun 26, 2012Quiz Created by
Jayhuiz23
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