They think of it as a spreadsheet
I believe its C
since A Hub is a networking device that allows one to connect multiple PCs to a single network and switch is a control unit that turns the flow of electricity on or off in a circuit.
1.)
<span>((i <= n) && (a[i] == 0)) || (((i >= n) && (a[i-1] == 0))) </span>
<span>The expression will be true IF the first part is true, or if the first part is false and the second part is true. This is because || uses "short circuit" evaluation. If the first term is true, then the second term is *never even evaluated*. </span>
<span>For || the expression is true if *either* part is true, and for && the expression is true only if *both* parts are true. </span>
<span>a.) (i <= n) || (i >= n) </span>
<span>This means that either, or both, of these terms is true. This isn't sufficient to make the original term true. </span>
<span>b.) (a[i] == 0) && (a[i-1] == 0) </span>
<span>This means that both of these terms are true. We substitute. </span>
<span>((i <= n) && true) || (((i >= n) && true)) </span>
<span>Remember that && is true only if both parts are true. So if you have x && true, then the truth depends entirely on x. Thus x && true is the same as just x. The above predicate reduces to: </span>
<span>(i <= n) || (i >= n) </span>
<span>This is clearly always true. </span>
Not really, NO
Fully encrypting a hard drive completely replaces the contents in the drive with an image. Combined with a pre-boot authentication, a thief will find it hard to break into an encrypted image. Therefore, the greatest benefit is to enhance data security and not make part of an ROI report. An ROI report in information security context is sometimes used to justify any security expense from which an organization might benefit. It is sometimes related to an encryption of a hard drive but has nothing to do with it being a benefit.