Take This Trivia Quiz On Telecommunication
Do you have the latest telecom industry news? Take this trivia quiz on telecommunication and measure your telecom knowledge. Telecommunication has broken barriers in the world today, and it is designed to make communication easier no matter the distance. Businesses are the biggest gainers when it comes to telecommunication. The quiz below is designed to see how much you know about it. Give it a shot and see how well you will do. All the best as you tackle it!
Questions and Answers
- 1.
Unwanted electrical waves getting into the CATV network is known as
Correct Answer
ingressExplanation
Unwanted electrical waves that enter the CATV network are referred to as "ingress." Ingress is a common issue in cable television systems where external signals, such as radio frequency interference, leak into the network and disrupt the desired signals. This interference can cause picture distortion, poor sound quality, and overall degradation of the cable TV service. To mitigate ingress, cable operators employ various techniques like proper shielding, signal amplification, and regular maintenance of the network infrastructure.Rate this question:
- 2.
Unwanted electrical noise in the network will cause the SNR to decrease
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Unwanted electrical noise in the network refers to any interference or disturbance in the electrical signals being transmitted. This noise can disrupt the clarity and strength of the signal, leading to a decrease in the Signal-to-Noise Ratio (SNR). SNR is a measure of the strength of the desired signal compared to the background noise. Therefore, it is logical to conclude that unwanted electrical noise in the network will indeed cause the SNR to decrease.Rate this question:
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- 3.
All unterminated/open ports must be terminated using a (Fill in the blank) Ohm termination cap
Correct Answer
75Explanation
All unterminated/open ports must be terminated using a 75 Ohm termination cap. This is because a termination cap matches the impedance of the transmission line, preventing signal reflections and ensuring proper signal transmission. In this case, a 75 Ohm termination cap is required to match the impedance of the transmission line and effectively terminate the open ports.Rate this question:
- 4.
What is the maximum permissable Bit Error Rate (BER) ?
- A.
1:10,000
- B.
0.5:1000
- C.
1:E03
- D.
10,000:1
Correct Answer
A. 1:10,000Explanation
Forward path error correction can only deal with 1 error in every 10,000 bits of data it recieves. Data loss could be due to noise, bad connections, low/high levels, damaged cable, faulty passives etc. It could also be transmission issues & Network problemsRate this question:
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- 5.
Scratching and scoring of the central conductor (Stinger) is most likely to affect what type of frequency?
Correct Answer
High Frequencies
High
high
high frequenciesExplanation
As high frequencies tend to travel toward the out side of the conductor (in this case the copper coating) -this is known as the skin effect - any damage to this will have an affect on the high end. The deeper the cut/scoring damage is the more problems it causes and the more of the frequency range is impacted.Rate this question:
- 6.
Leaving an air gap in a connection such as that created by a short stinger will create a resistance change resulting in
- A.
Higher resistance
- B.
Lower resistance
- C.
Stays the same
Correct Answer
A. Higher resistanceExplanation
Leaving an air gap in a connection, such as that created by a short stinger, will create a higher resistance. This is because air is a poor conductor of electricity compared to a solid conductor. When there is an air gap in the connection, the flow of electricity is hindered, leading to an increase in resistance. As a result, the resistance in the circuit will be higher than if the connection was solid and uninterrupted.Rate this question:
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- 7.
Changing the characteristic impedance between the DP and customer equipment will
- A.
Have no effect at all
- B.
Cause greater resistance leading to problems
- C.
Cause less resistance leading to problems
- D.
Cause the noise floor and SNR to increase and get better
Correct Answer
B. Cause greater resistance leading to problemsExplanation
Changing the characteristic impedance between the DP and customer equipment will cause greater resistance leading to problems. Impedance mismatch can result in signal reflections, which can cause signal degradation, loss of power, and other issues. Increased resistance can lead to reduced signal quality, increased noise, and potential communication problems between the DP and customer equipment.Rate this question:
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- 8.
Where possible all buried cable must be put in
- A.
Conduit
- B.
Cement
- C.
Nothing
- D.
Blue plastic
- E.
Riser guard
Correct Answer
A. ConduitExplanation
Conduit is the correct answer because it provides protection and support for buried cables. It is a pipe or tube made of metal or plastic that encloses the cables, shielding them from damage caused by external factors such as moisture, rodents, or accidental digging. Conduit also allows for easy maintenance and future cable installations. By placing cables in conduit, they are better organized and less prone to wear and tear, ensuring their longevity and efficient functioning.Rate this question:
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- 9.
When is permissible to leave cable unsecured on a customers property?
- A.
Never
- B.
If I put a traffic cone on the cable to prevent trips
- C.
If it's got a gate guard
- D.
If I've run out of clips and staples
- E.
When I was told that I could
Correct Answer
A. NeverExplanation
It is never acceptable to leave any cable loose or unsecured. Cables MUST be secured using company securing methods and by following company process. You put others at risk as well as yourself and are also leaving yourself and the company open for litigation.Rate this question:
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- 10.
What is the expected ringing voltage of a VM phone line?
- A.
75vac
- B.
48vac
- C.
75vdc
- D.
48vac
- E.
48 to 75v
Correct Answer
A. 75vacExplanation
The expected ringing voltage of a VM phone line is 75vac.Rate this question:
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- 11.
Unless directed otherwise by your local manager what information must be put on a drop tag?
- A.
Address
- B.
Tech number
- C.
Date
- D.
Account number
- E.
Tech name
- F.
Customer name
- G.
A happy face
Correct Answer(s)
A. Address
B. Tech number
C. DateExplanation
The drop tag is a form used to document important information about a service call or delivery. It is necessary to include the address, tech number, and date on the drop tag to ensure proper identification and tracking of the service or delivery. The address is crucial for the technician or delivery person to know where to go, while the tech number helps in identifying the specific technician assigned to the task. The date is essential for recording the date of the service or delivery. Including these details on the drop tag ensures accurate and efficient handling of the task.Rate this question:
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- 12.
You find your allocated D side already has a jumper wire in it. What's the next thing you should do?
- A.
Check it using a Butt phone with correct type testlead
- B.
Pull the wire as hard as you can
- C.
Give it a tug to see where its going
- D.
No need to check anything if its on my paperwork
- E.
Remove the jumper with care
Correct Answer
A. Check it using a Butt phone with correct type testleadExplanation
The next thing you should do is check the jumper wire using a Butt phone with the correct type test lead. This will allow you to verify the integrity and functionality of the jumper wire. Pulling the wire as hard as you can or giving it a tug may cause damage or disruption to the connection. Checking the paperwork is not sufficient as it does not guarantee the proper installation and functioning of the jumper wire. Removing the jumper with care is a possible next step, but it is important to first check its status using the appropriate equipment.Rate this question:
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- 13.
When demonstrating a speed test after completion of a BBI install or upgrade this is always best done by using the wireless connection as this will give the best connection speed.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Where possible always do a speed test with the equipment connected to the modem via an ethernet connection.Rate this question:
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- 14.
The first test performed on the local line when using the SA9083 meter is for
- A.
Stray voltage ac
- B.
Earth conditions
- C.
Battery conditions
- D.
Ohms X100
- E.
Mega Ohms
- F.
Dial tone
Correct Answer
A. Stray voltage acExplanation
When using the SA9083 meter, the first test performed on the local line is for stray voltage ac. This means that the meter is checking for any unwanted or unexpected voltage that may be present on the line. Stray voltage can be caused by various factors such as faulty wiring or electrical interference, and it is important to detect and address it to ensure the safety and proper functioning of the electrical system.Rate this question:
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- 15.
The maximum number of wires permitted to be inserted into a single IDC is
- A.
3
- B.
5
- C.
1
- D.
2
- E.
4
Correct Answer
D. 2Explanation
The correct answer is 2. This means that the maximum number of wires permitted to be inserted into a single IDC (Insulation-Displacement Connector) is 2. This limit is in place to ensure proper electrical connections and prevent overcrowding or damage to the connector. Exceeding this limit may lead to poor connectivity or even short circuits.Rate this question:
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- 16.
The NTE (master socket) and any cable feeding directly to it (not including the extension wiring) is the property of who?
- A.
The customer
- B.
The service provider
- C.
The landlord
- D.
The last people there
- E.
No one
Correct Answer
B. The service providerExplanation
Any wire or sockets that are fitted before the NTE belong to the service provider. Any sockets or wire feeding from the extention face plate of the NTE belong to the customer.Rate this question:
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- 17.
What is the expected characteristic impedance of the CATV network?
- A.
75ac
- B.
75dc
- C.
75 Ohms
- D.
48dc
- E.
57 Ohms
Correct Answer
C. 75 OhmsExplanation
The expected characteristic impedance of the CATV network is 75 Ohms. This is the standard impedance used in CATV systems to ensure efficient signal transmission and minimize signal reflections. It is a common impedance value for coaxial cables and is compatible with most CATV equipment and devices.Rate this question:
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- 18.
By using any type of passive splitter you will reduce the upstream power level
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Using any type of passive splitter will not reduce the upstream power level. Passive splitters simply divide the signal into multiple outputs without affecting the power level. The power level remains the same regardless of the number of outputs. Therefore, the statement is false.Rate this question:
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- 19.
High frequencies attenuate faster than low frequencies
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
A high frequency will have more cycles per second than a lower one. This means that it works harder to travel the same distance that a low frequency would and as a result will use up more power.Rate this question:
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- 20.
When stapling cable how far apart where possible must the staples be placed?
- A.
A staple guns length
- B.
A hammers length
- C.
The length of a pair of plyers
- D.
There is no spec covering this
- E.
Length of a screwdriver
Correct Answer
A. A staple guns lengthExplanation
The correct answer is "A staple gun's length." When stapling cable, it is recommended to place the staples at a distance equal to the length of a staple gun. This ensures that the cable is securely fastened and prevents any potential damage or strain on the cable.Rate this question:
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- 21.
All external holes which the installer has drilled to gain cable access into the property as a minimum must be sealed using
- A.
Silicon sealent and a grommet
- B.
Grommets and bushels
- C.
Concrete and end cap
Correct Answer
A. Silicon sealent and a grommetExplanation
The correct answer is silicon sealant and a grommet. When an installer drills external holes to gain cable access into a property, it is important to seal these holes properly to prevent water, pests, or other unwanted elements from entering. Silicon sealant is a waterproof material that can be applied around the edges of the hole to create a tight seal. A grommet, on the other hand, is a rubber or plastic ring that can be inserted into the hole to provide additional protection and prevent any sharp edges from damaging the cables. Using both silicon sealant and a grommet ensures a secure and watertight seal for the cable access points.Rate this question:
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- 22.
As a result in noise - Ingress - entering the CATV network which of the following will result (select 9 answers)
- A.
Decreasing of the SNR
- B.
Rise in the noise floor
- C.
Reduction in signal power
- D.
Increase in signal power
- E.
Increasing of the SNR
- F.
Increase in upstream power level
- G.
Decrease of upstream power level
- H.
Loss of data
- I.
Blocking and freezing
- J.
Slow internet speeds
- K.
Eventual loss of interactive
- L.
Eventual total loss of CATV services
Correct Answer(s)
A. Decreasing of the SNR
B. Rise in the noise floor
C. Reduction in signal power
F. Increase in upstream power level
H. Loss of data
I. Blocking and freezing
J. Slow internet speeds
K. Eventual loss of interactive
L. Eventual total loss of CATV servicesExplanation
Ingress noise refers to unwanted signals that enter the CATV network from external sources. When there is ingress noise, several negative effects can occur. Decreasing of the SNR (Signal-to-Noise Ratio) happens because the noise level increases while the signal power remains the same, resulting in a weaker signal relative to the noise. Rise in the noise floor refers to an overall increase in the background noise level, which can degrade the quality of the signal. Reduction in signal power occurs because the noise interferes with the signal transmission. Increase in upstream power level is needed to compensate for the added noise. Loss of data, blocking and freezing, slow internet speeds, eventual loss of interactive features, and eventual total loss of CATV services can all occur due to the negative impact of the ingress noise on the network.Rate this question:
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- 23.
As part of providing customers with a brilliant customer experience technicians are expected to (please select the ones you believe to be correct)
- A.
Pre call each customer
- B.
Wear overshoes in the property
- C.
Show thier ID
- D.
Walk the customer thru the work they have done
- E.
Discuss the route before starting any work
- F.
Give an estimate of install duration
- G.
Complete a checksheet at the end of a job
- H.
Explain about the NPS survey
- I.
Ensure all services are working and to spec
Correct Answer(s)
A. Pre call each customer
B. Wear overshoes in the property
C. Show thier ID
D. Walk the customer thru the work they have done
E. Discuss the route before starting any work
F. Give an estimate of install duration
G. Complete a checksheet at the end of a job
H. Explain about the NPS survey
I. Ensure all services are working and to specExplanation
Technicians are expected to pre-call each customer to confirm the appointment and gather any necessary information. They should wear overshoes in the property to maintain cleanliness and protect the customer's floors. Showing their ID is important to establish trust and ensure the customer's safety. Walking the customer through the work they have done helps them understand the process and feel more involved. Discussing the route before starting any work ensures that the technician and customer are on the same page. Giving an estimate of install duration helps manage the customer's expectations. Completing a checksheet at the end of a job ensures that all necessary tasks have been completed. Explaining about the NPS survey helps gather feedback and improve customer experience. Finally, ensuring all services are working and to spec ensures customer satisfaction.Rate this question:
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- 24.
On completion of a BBI install to enter the modems user interface you need to enter a username and password. These are set as default to
- A.
Admin/Changeme
- B.
Aladin/Changeling
- C.
Alabama/Changeing
- D.
Admin/Password
Correct Answer
A. Admin/ChangemeExplanation
The correct answer is Admin/Changeme. This is because the question states that after completing a BBI install, the user needs to enter a username and password to access the modem's user interface. The default username and password for this purpose are set as Admin/Changeme.Rate this question:
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Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Sep 04, 2023Quiz Edited by
ProProfs Editorial Team -
Oct 18, 2012Quiz Created by
Duncanclayton211
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