Excel cannot perform mathematical calculations on a cell that contains ________

Which of the following operations do random access iterators have?

A. Prefix operator* to make available the container element for use as l-value or r-value. B. Overloaded binary operator+ to move the place the iterator points forward by the amount added. C. Overloaded binary operator* to multiply the iterator by a double value to move the place the iterator points by a fractional number of elements equal to the double argument. D. Overloaded unary operator++ to move the place the iterator points forward by as many elements as the argument.

Which of the following is true?

A. Deep Packet Inspection uses a variety of analytical and statistical techniques to evaluate the contents of message packets. B. An Intrusion prevention system works in parallel with a firewall at the perimeter of the network to act as a filer that removes malicious packets from the flow before they can affect servers and networks. C. A distributed denial of service attack is so named because it is capable of attacking many victims simultaneously who are distributed across the internet. D. None of the above are true statements.