Safety
Which condition is cause to immediately leave an attic space and notify a lead or supervisor?
Electrical wires with exposed conductors
What is Spectrum.net?
This is where existing customers can watch TV, access their accounts, and find self-help support videos
A 6 MHz wide carrier with a modulation scheme that can provide an operational data rate of 38 Mbps?
256 QAM
What is the master facility for receiving television signals for processing and distribution over a cable television system called?
Headend
If RG-6 cable has a loss at channel 2 of about 1.6 dB/100' then what should the loss be on channel 2 across 125' of RG-6?
2.0 dB
What is the maximum diameter of any hole made in a wooden stud to accommodate a cable's installation?
3/4"
You have noticed that the aerial tap you need to access is surrounded by heavy foliage. What does the SAFE method tell us to do first?
Decide if the foliage will require trimming prior to attempting this work.
True or False: When there’s no nearby electrical outlet where the integrated splitter amplifier (ISA) is installed, then the installer can power the ISA through a power inserter.
True
Where does the 256 come from in the term 256-QAM?
It carries 8 bits per symbol and 2 raised to the 8th power equals 256
The preferred configuration of an Integrated Splitter Amplifier (ISA) and other drop amplifiers ensures that they do not amplify RF for which of the following?
EMTA
True or False: The CATV plant must be an open system that allows RF energy to leak out at frequencies used for air navigation and 4G communication.
False
True or False: Its not mandatory to free grounding conductors of paint or dirt in order to make a quality electrical bond.
False
Employees can identify hazards and manage risk through SAFE: Stop, Assess, _______, Eliminate.
Focus
Which term describes a pathway that delivers carriers from the set-top box to the headend, such as PPV purchase information and Video On Demand (VOD) requests?
Over Band
External Band
Reverse Band
FM Band
Reverse
Long Term Evolution (LTE) 4G (fourth generation) cell phones use a band that overlaps frequencies commonly used in CATV systems. What frequencies are affected when CATV signals leak out or LTE signals ingress in?
The 700 MHz band (698 - 806 MHz)
If the payload of a 6 MHz wide 256 QAM carrier is 36-38 Mbps and a compressed standard definition program occupies between 2 and 4 Mbps, then how many standard channels can be transmitted in the same bandwidth that used to carry one analog channel?
8-12
True or False: The body belt is to be worn low on the hips and not around the center of the waist.
True
Which DOCSIS (Data over Cable System Interface Specification) uses channel bonding?
DOCSIS 3.0
What should be your first response if you encounter an obstacle in your path while driving?
Reduce your speed.
For the amplified outlets of a typical integrated splitter amplifier (ISA), the ISA’s internal gain offsets its internal _____ loss.
Passive
What is another way of saying 1 millivolt measured across 75 ohms of impedance?
0 dBmV
What do QPSK, 16 QAM, 64 QAM and 256 QAM have in common?
They each use two waveforms with identical frequency, phase shifted 90° apart
What can be tested by connecting to an interior wire at the ground block?
Ingress
What computer utility displays the route from the source to the destination and can uncover latency causing network bottlenecks?
Trace Route
TRACERT
In which two instances will you use GOAL?
Before Departure
Before Backing Up
What is Hum Modulation?
Distortion of carriers by a 60 Hz or 120 Hz voltage
What unit is a relative measurement used to express signal loss or gain and is not a measure of signal strength?
Decibel
When a drop amplifier's internal gains equal its passive losses then what is its overall gain?
0.0 dB
During the performance of a DOCSIS test, the SLM's built-in modem performs "ranging" with the ________, just like a customer's cable modem.
CMTS
What is tested when the technician pings the loopback address (127.0.0.1)?
Network Interface Card (NIC)
What is the number one cause of accidents for Charter drivers?
Hitting stationary objects
What is forward error correction (FEC)?
Additional data added to the digital payload for the purpose of correcting errors
How many completed alternating cycles is a 750 MHz carrier making every second?
750 Million
Will a 100' RG-6 cable have more, less, or the same RF signal loss as a 100' RG-59 cable?
RG-6 will have less attenuation
Which piece of equipment is used to safely hold a drop cable or a hand line while the technician ascends a ladder?
Breakaway Clip/Handline Carrier
Which type of questions often require very short answers and are helpful in verifying the details about a situation?
Closed Ended
When two vehicles arrive at a 4-way stop at the same time, and are located side by side, which vehicle has the right of way?
The vehicle to the right.
The video is AM, the audio is FM and phase modulation controls the color. What is being described here?
Analog Signal
Which frequency range is used for upstream signals (a.k.a. Transmit/Return)?
5 MHz - 42 MHz
Frequency is the number of fully completed cycles per second. One complete cycle in one second equals a frequency of 1 ________.
Hertz
While activating a service you have found a coaxial cable that looks as if it was overheated/melted, what should you do next?
Test with a foreign voltage detector
Call Supervisor
If RG-6 cable has a loss at channel 2 of about 1.6 dB/100' then what should the loss be on channel 2 across 125' of RG-6?
2.0 dB
What should be your FIRST choice when choosing a parking location for your Charter vehicle?
Drive in and park so you can drive out.
Which term refers to the original information/signal before it is modulated onto a carrier for transmission or that same signal once it has been removed from a carrier?
Baseband
Which of the following make up the typical coaxial cable?
Jacket, Shielding, Dielectric, and Center Conductor
Order of operations in mathematics is PEMDAS Parenthesis, ____________, Multiply, Divide, Add, Subtract
Exponents
What is the minimum vertical clearance that must be maintained as cables pass over interstates, highways, and county roads?
18 Feet
If RG-6 cable has a loss at channel 78 of about 4.9 dB/100' then what should the loss be on channel 78 across 225' of RG-6?
11.0 dB