OSP Network Architecture & Design Standards 4

Question 1

In Telcordia GR-20 standards for optical fiber cables, what does the term 'proof test' refer to?

Accepted Answer

Applying a controlled tensile stress to verify fiber mechanical integrity

Answer

A proof test applies a controlled tensile load to each fiber to screen out fibers with critical flaws that could cause premature failure in service.

Question 2

What is the purpose of a 'slack loop' built into a buried fiber cable route?

Accepted Answer

To allow for future splicing, thermal expansion, and cable retrieval without re-excavation

Answer

Slack loops provide extra cable length that accommodates thermal movement, allows future splicing, and enables retrieval of damaged sections without pulling new cable.

Question 3

When designing a network using ITU-T G.652 single-mode fiber, which wavelength window is specified as the primary operating window for OSP applications?

Accepted Answer

1310 nm and 1550 nm

Answer

G.652 single-mode fiber is optimized for operation at 1310 nm (zero dispersion) and 1550 nm (minimum attenuation) windows.

Question 4

What design principle does 'zoning' in OSP network architecture refer to?

Accepted Answer

Dividing the network into geographic service areas served by a common distribution point

Answer

Zoning divides the service territory into geographic areas (zones), each served by a common distribution point, improving network manageability and scalability.

Question 5

A designer specifying conduit for a new OSP installation in an area with frequent heavy vehicle traffic must meet which minimum burial depth per NESC for conduit under a road?

Accepted Answer

36 inches

Answer

NESC requires a minimum burial depth of 36 inches for conduit installed under roadways subject to heavy vehicle traffic.

(OSP) Outside Plant Designer Practice Test

(OSP) Outside Plant Designer Practice Test

OSP Network Architecture & Design Standards 4