NCTI 2-3 20 Questions

What is the difference between the FTTN and FTTC topologies?

An FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises.

How are optical splitters used in the forward path?

As passive branching devices that divide an optical signal across multiple output fibers.

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.

In a PON FTTx networks, which OSP device contains fiber test points that will minimize service disruption to customers?

FDH.

What parameter is critical in an OTDR when testing a PON with significant splitters losses?

High dynamic range.

Which type of fiber topology used in a PON places the PON splitters at the headend while providing one designated fiber for every customer premise?

Home-run

What is an ONU/ONT?

It is a device that converts light from fiber to Rf for coaxial distribution into home.

What is true about using a premed 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 characteristics of ITU-T G.657 BIF?

It is flexible for installation in small spaces and has a small bend radius of 7.5 mm or 10mm.

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?

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.

Which PON element uses patch panels?

ODN

What is the best approach to repairing an aerial fiber-optic drop cable for FTTx applications?

Replace the entire section of fiber drop cable.

What 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 Tvs 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 the 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.