FTTX quizlet
The National Electrical Safety Code requires drop cables to be placed at what minimum depth?
18 feet.
What is the purpose of the drop fiber transceiver?
Convert light to RF, and RF to light.
When a pew connectorized fiber is not attached to equipment, what should be attached to help keep it clean?
A dust cap.
What should be used to cut the fiber drops buffer tube?
A tube cutter.
When should you take the RF reading out of the RF out port of a fiber optic drop transceiver?
After power supplies are connected and powered for the optic transceiver.
Heat Shrink Tubing is installed over the fusion-splice to strengthen and protect it. When should the heat shrink be installed on fiber?
After stripping the plastic coating from the fiber, but before wiping away the residue from the glass.
Which of these components is used in a passive optical network (PON)?
Amplifiers.
What should be used to remove the protective gel from exposed fibers in drop cable?
An approved alcohol swab.
Define this topology: Places all PON splitters into one enclosure that fully utilizes the OLT and provides a single access point for troubleshooting.
Centralized split topology.
What is one reason why broadband cable operators install a fiber-optic cable in stages instead of changing the infrastructure all at once?
Changing the infrastructure all at once would create excessive network congestion.
Define this topology: The OLT port is connected directly to the outside plant. The first level of PON splitters is placed into the FAT located deep in the network. The second level of PON splitters is located at the MST, which is very close to the customer.
Distributed split topology.
Which type of star topology used in a passive optical network (PON) places the PON splitters into fiber access terminal (FAT) located deep in the network and closer to the customer premises than the centralized split?
Distributed star.
In a PON FTTx network, which OSP device contains fiber test points that will minimize service disruption to customers?
FDH (Fiber Distribution Hub)
What is the difference between the fiber- to- the- node(FTTN) and fiber-to-the-curb(FTTC) topologies
FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises
Which of the following describes a fiber pigtail?
Fiber-optic cable with pre-connectorized ends.
What parameter is critical in an ODTR when testing a PON with significant splitters losses?
High dynamic range.
Define this topology: The optical splitters are located at the headend, and each optical fiber is routed to each customer premises.
Home - run topology.
How are optical splitters used in the forward path?
In the forward path, optical splitters are used as passive branching devices that divide an optical signal across multiple signals.
What is an ONU/ONT?
It is a device that converts light from riber to RF for coaxial distribution into the home.
What is true about use a premade fiber-optic pigtail for splicing to patch panels or terminal equipment?
It is faster and more reliable than installing connectors in the field.
What are the advantages of loose buffer tube fiber?
It offers the best protection for the fibers under high pulling tension and moisture with its fiber-coated gel.
What is the purpose of a fiber demarcation box(FDB)?
It provides a safe place to splice, split, distribute, store, and cross-connect fiber optics.
What is the purpose of the MST?
It provides access to connect fiber- optic cable drops from the customer premises to the network.
What is the purpose of the SDU?
It provides surge protection, a test jack, circuit protection, wiring management, and fiber termination.
What is the main benefit of deploying WDM technology?
It will increase the capacity of the existing fiber networks tenfold without adding any more fiber.
What are the Characteristics of ITU-T G.657 BIF?
Low-Water peak and a bend radius of 30 mm.
Which element of a passive optical element (PON) uses patch panels?
Optical Distribution Network(ODN)
Which element of a passive optical network (PON) uses a Bragg grating filter?
Optical Line Terminal (OLT).
What is the best approach to repairing fiber-optic drop cable that is close to the ONT for FTTx applications leashed to messenger?
Pull slack and re-splice the connector.
What is it about radio frequency over glass (RFoG) that made broadband cable operators envision using it to make a seamless transition from the legacy hybrid fiber / coax (HFC) architecture over to a gigabit-capable passive optical network (GPON) or Ethernet Passive optical network(EPON)?
RFOG can operate in parallel with GPON or EPON which eliminates the need for any downtime during transition.
What is the best approach to repairing fiber-optic drop cable directly connected to the conduit/duct for FTTx applications leashed to messenger?
Repair the damaged section, or replace the whole cable.
What is the best approach to repairing a buried fiber-optic drop cable for FTTx applications leashed to messenger?
Replace the entire damaged cable.
What is the best approach to repairing an aerial fiber-optic drop cable for FTTx applications leashed to messenger?
Replace the entire section of fiber drop cable.
What is the best approach to repairing an aerial fiber-optic drop cable for FTTx applications self supporting?
Replace the entire section of fiber drop cable.
Which type of fiber topology use in a PON places the PON splitters at the headend while providing one designated fiber for every customer premise?
Star-bus
Which is the one main function of the FDH
The FDH provides effective fiber management by grouping splitters into local serving areas
What is the purpose of the ground block?
To protect fragile electronics like TV's and STBs from damaging lightning strikes and power surges.
What are the three categories of the fiber optic cable used to identify the location of the fiber in network?
Trunk, branch, and drop.
What is unique about WDM-Pon?
WDM-PON deployed in a greenfield system allows each subscriber to get their own designated wavelength.
What is the proper way to handle fiber once it is spliced?
At the heat-shrink protective sleeve that has a steel bar inside it.
