The condition in a switch statement may use an inequality operator to compare values.

In an empty stack, the top pointer _____.

A. points to itself B. is null C. points to the head D. points to an empty node

A network IPS is used for which of the following?

A. To identify and document network based intrusions and network traffic B. To document and analyze network visualization threats and performance C. To identify and prevent network based intrusions or unwanted network traffic D. To document and analyze malware and viruses on the Internet