I believe it would be the anchor element.
<a href="#"></a>
Correct me if I'm wrong.
Answer:
I think you have to restart your device.
The answer is 2 frequencies.
A Full-Duplex QAM 64 K Modem uses two frequencies. One frequency is used for upstream and the other for downstream. A variety of common QAM forms are available and include, 16 QAM, 32 QAM, 64 QAM, and 256 QAM. For example, for domestic broadcast use, 64 and 256 QAM are used for cable modem and digital cable TV. The modulation scheme for this modem uses both amplitude and phase.
The organizational structure described here, which is known as vertical organizational structure, is also commonly identified as tall organizations.
They usually have hierarchical structures, with the CEO being at the very top of the layer. Tall organization have multiple levels, compared to its counterpart, the flat organization or horizontal, which would only have one level.