Is Axis Right About H.264 Weakness?

Check out this question from an Axis online knowledge test:

Axis says the correct answer, i.e., the weakness, is that 'it is difficult to estimate bandwidth and storage...

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* ***** ** * ***** **'* * ******** ******* **** CBR ** ***/*'***, *** *** ******** *** ******* ******* *** might ****, *** *** *** ****** ***** ** **** *** needed **** **** *** ******* *** ****** **** ******* **** you ******.

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******** ******** **** ******/***** ******. * *** ******* ** ***'* see **** *** **'** *** ** *** ******* **** * convincing **** *** **** *********.