OSP Network Architecture & Design Standards 5

Question 1

In a wavelength division multiplexing (WDM) OSP design, what does the term 'optical channel spacing' refer to?

Accepted Answer

The frequency or wavelength interval between adjacent WDM channels

Answer

Optical channel spacing defines the frequency or wavelength separation between adjacent WDM channels, determining how many channels can be packed into the fiber's transmission band.

Question 2

When an OSP designer specifies a 'distribution cable' in a FTTP architecture, what portion of the network does it cover?

Accepted Answer

From the optical splitter to the fiber distribution terminal serving a cluster of homes

Answer

Distribution cable runs from the optical splitter location to a fiber distribution terminal (FDT) or pedestal that serves a neighborhood cluster.

Question 3

What is the maximum allowed individual splice loss for single-mode fiber as specified in most carrier OSP design standards?

Accepted Answer

0.1 dB

Answer

Most carrier OSP specifications allow a maximum individual fusion splice loss of 0.1 dB, with an average of 0.05 dB or less preferred.

Question 4

A network designer evaluating conduit fill rates is designing a new pull. Which maximum fill percentage is the standard industry guideline for conduit containing multiple cables?

Accepted Answer

53%

Answer

Industry guidelines (per NEC and Telcordia) specify a maximum conduit fill of 53% for three or more cables to allow pulling without excessive jamming probability.

Question 5

In OSP network design, what does 'make-ready' refer to in the context of pole attachment projects?

Accepted Answer

The work required to prepare existing poles and attachments to accommodate a new attachment safely and in compliance with regulations

Answer

Make-ready encompasses all modifications to poles, existing attachments, and clearances necessary to safely add a new attacher's equipment while meeting NESC requirements.

(OSP) Outside Plant Designer Practice Test

(OSP) Outside Plant Designer Practice Test

OSP Network Architecture & Design Standards 5