Terms - Tech related Flashcards
Name the 3 main components of an optical link.
Fiber optic cable, transmitter, and receiver
According to Watchtower, what does plant integrity indicate?
percentage of modems NOT in a fault state
What are the five rules that the Interconnection Agreement contains regarding our access to the NID?
- May only open the customers side of the NID
- Has permission to disconnect the ILEC’s serice from the customer’s inside wiring
- May connect the customer’s inside wiring to our eMTA
- May not disconnect any grounding devices or protectors
- May not disturb the ILEC’s equipment or services
What calculator is used by Telco designers to estimate the average volume for PSTN or private wire connections?
Erlang Calculator
Which FLUX mapping feature is used to group modems, by color, unrelated to the type or severity of a problem?
Signature Mode
What modulation scheme is used for the signal inserted onto the fiber optic cable at the headend?
Amplitude Modulation (AM)
Which 2 wires transmit using the T568A standard?
white green, green
What term defines a stream of atomic nuclei that enters the earth’s atmosphere from outer space at speeds approaching light speed?
Cosmic Rays
What 3 physical characteristics designate 75 ohm coaxial cable?
Diameter of center conductor, distance from center conductor to sheath, and dielectric
Which laser is commonly used for downstream laser transmitters?
DFB (Distributive Feedback Laser)
What are the inter-PBX transports called?
Tie trunks
Where should levels be measured between the node and CMTS?
Combining Wall, Sweep Module Location, and PathTrak
A non-flat frequency response across a specified frequency range is designated by which signal measurement?
Amplitude tilt
What are the 2 types of RTMs that can be submitted?
SA (Service Affecting) and NSA (Non-Service Affecting)
Resistance and Impedance are 2 of the 3 electrical characteristics of coax. What is the third?
Capacitance
What is used to prevent unwanted pay-off of strand from the cable trailer?
Reel Brake
What is a tubular rigid or flexible raceway through which cable can be pulled?
Conduit
What type of architecture was developed to replace tree and branch topology to improve network reliability and flexibility?
Hybrid Fiber Coax (HFC) architecture
What term describes the resistance of a circuit to alternating current?
Impedance
What term is used to describe noise caused by inherent instabilities within a laser?
Relative Intensity Noise or RIN
What amplifier input unit is used to achieve attenuation that duplicates that of cable?
Cable Equivalency or Cable Simulator
What term describes the spare fiber reserved for future used?
Dark Fiber
What is the term used to define an electrical process that combines several individual signals into a single medium?
Multiplex
What does a yellow US or DS LED indicate on an Arris 760 cable modem?
Modem is operating in DOCSIS 2.0 mode
When using a VOM to measure across tip and ring in a phone circuit, what condition exists with a reading of 6 to 8 volts DC?
CPE off hook
What is the term for the peak value of an AC waveform?
Amplitude
What are the three components of an optical fiber?
- Core
- Cladding
- Protective Coating
What is the designation of channel 24 in a PRI circuit?
the Delta (D) channel
What term describes tension in cable caused by the weight of the cable on the reel and the reel brake?
Tail loading
Which distortion is a third order product that follows a 20 log function
Cross Modulation (XMOD) or Composite third order
What is the term for testing a power supply battery by using a device with heated coils?
Load testing or testing under a load
What is the name of the tool used for pulling bridger clips from a punch-down block or for manipulating wires in a punch-down block?
Spudger or Dental pick
A mainframe power supply puts out what type of waveform?
Quasi-Square Wave
What kind of anchor is designed for use in soft soil?
Never-creep anchor or plate-type anchor
What device is configured with a list of switched channels that are identified by ID, multicast address and port, encoding format, and bandwidth information?
The switched digital video session manager
Signal degradation from electromagnetic fields, shortwave radio transmissions or off-air broadcasts are examples of which common impairment?
Ingress
What type of feed should be used whenever a customer has a PBX and/or a monitored alarm system?
Dedicated Feed
What is the purpose of the CISCO STA1520?
It is a box that enables the TIVO DVR to recognize Switched Digital Channels.
In the forward direction, sweep systems provide what function that will allow any amplifier to have a flat trace?
Normalization
The transfer of energy from one device to another is best achieved when both devices are of the same what?
Impedance
What industry term describes PBXs that can be easily hacked?
Leaky
What is another name for the commercial demarcation point?
Minimum Point of Entry (MPOE)
Name 4 types of fiber connectors.
Ferruled Connector (FC),
Standard Connector (SC),
Ultra Polished Connector (UPC), and
Angle Polish Connector (APC)
Name 3 types of optical power meters.
Silicon (Si), Germanium (Ge), and Indium Gallium -Arsenide (InGaAs)
What are the 4 common waveforms you will encounter in cable telecommunications?
Square wave, Quasi-square wave, sine Wave, Sawtooth wave
How does bonding limit potentially lethal voltage that may be present on the drop cable from external sources?
Through equalization of potential between Comcast services and other utility services at the home.
What 2 configuration changes occur when a factory reset is performed on a RIP enabled SMC?
The SMC will obtain a public dynamic IP and all LAN settings will be lost.
What is the monitoring center for high-speed data and telephony?
NOC (Network Operations Center) or NMC (Network Management Center)
What location in a business acts as a “hub” for various telecommunications services?
Communications Closet/Room
Which type of map resembles a street map, complete with features like lakes, rivers, streets, and boundaries?
Base Map
The QPSK and QAM modulation schemes shift which 2 carriers?
I and Q
What does a black lightning bolt symbol indicate in Watchtower?
Commercial Power Outage
What Scout tool displays the last 7 to 20 days of uncorrectable code words, grouped into 1-hour polls?
FEC Uncorrectable History
What component converts AC power to the DC power needed to operate an amplifier?
DC Power Pack
How far should a pre-packaged and pre-installed thread protector be pushed onto an outdoor F-port?
Until it rests completely against the base of the F-port.
What devices are placed over the trap and the drop connectors to prevent them from being removed without authorization?
Security Sleeves
What is a lower cost laser transmitter used int he return path of a two-way network?
Fabry-Parot laser
What value is obtained by measuring the attenuation between output ports when the input port is terminated at the correct value of impedance?
Isolation
What network integrity figure is derived mathematically from the number and severity of leaks in a cable system?
CLI (Cumulative Leakage Index)
What component in coaxial cable directs stray AC current to ground?
Aluminum foil or braid
What hardware must NEVER be placed over the lashing wire because it will compress and damage the cable?
Span Clamp
In Watchtower, what does a yellow polygon around a group of customers indicate?
Service call cluster
What drop routing method helps prevent aerial drop trespass?
Mid-span
When should silicon compounds be used to seal or weatherproof outdoor F-connector threads?
Never
When using the Adtran 908eIAD, what color is the LAN link light when a 100 BaseT network is detected?
Amber
Which type of pole is used for strand tensioning purposes?
Stub Pole