Describe one way that a blackhat hacker might gain access to one of the business’s computers. Provide sufficient detail that a novice computer user could understand the threat. (Save your discussion of solutions for the next question.)

Consider a VoIP phone that uses digital voice encoding with an audio CODEC that has a sampling rate of 20kHz with 16 bits per sample. How many distinct sound intensity levels can be represented with this CODEC?

Which of the following statements about a zero-day exploit is false?

Compare two carrier frequencies, one at 89.7MHz and the other at 2.4GHz, in terms of the information they can convey.  You may assume that each signal is transmitted over a dedicated wire. Which carrier can be used to convey more information given a signal with a 100kHz bandwidth?

How would recording (i), with a sampling rate of 10kHz recorded using 8 bits/sample, differ from recording (ii), with a sampling rate of 20kHz and using 8 bits/sample?

Which key would someone use if they wanted to send you a confidential message?

What can we do to fix the aliasing shown in the picture of a barn door?

Unlike analog audio, digital audio reproductions still sound good after being copied several times because Fourier’s theorem tells us that complex waves can be reproduced by “stacking” simpler waves.

The text shown in the blocks below is an example of… 

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