________ is one of Excel's what-if analysis tools with which you can find an optimal value for a formula in one cell

A technician is called to investigate a connectivity issue to a remote office that is connected by fiber optic cable. Using a light meter, it is determined that the Db loss is excessive. The installation has been working for several years. The switch was recently moved to the other side of the room and a new patch cord installed. Which of the following is MOST likely the cause of the issue?

A. Distance limitations B. Wavelength mismatch C. Bend radius limitation D. Dirty connectors

In the accompanying figure, what kind of gradient is sample 2?

A. shortened radial B. radial C. shortened linear D. linear