You can use the ____ shape to activate the areas of an image map not covered by one of the three main shapes.

________ is the process of copying external data directly into the database

Fill in the blank(s) with correct word

As public-key cryptography is computationally intensive and drains the battery of Barack's device, he comes up with an alternative approach. First, he shares a secret key k with Hillary but not with Bill. Next, together with a joke x, he sends over the value d = h(k||x), where h is a cryptographic hash function. Does value d provide assurance to Hillary that Barack is the author of x and that x

was not modified by Bill? Justify your answer. What will be an ideal response?