What is the closest value for the Zero dispersion slope coefficient of a dispersion unshifted single mode fiber?

What is the unit of measurement of Attenuation?

Gaussian distribution was used to predict a fiber characteristic, which has been replaced by the Petermann II method. Which one of the below is that characteristic?

Which one of the following can not be tested by using an OTDR?

Which one of the following fiber characteristic is measured and computed by Jones Matrix Eigen analysis?

There is a fiber break in the network at around 3 kilometers. You want to test and find the location of the fiber break. Which one of the following equipment you will use?

Which one of the following units is used to measure PMD Coefficient?

What is the name of the equipment in the picture?

image courtesy: G-Link

Which one of the following can be measured using OTDR?

When I tested an optical fiber using OTDR, I found some kind of step in the OTDR trace. What is the name used to call such events in OTDR?