A hacker is attempting to see which ports have been left open on a network. Which NMAP switch would the hacker use?

An attacker uses a communication channel within an operating system that is neither designed nor intended to transfer information. What is the name of the communications channel?

Attacking well-known system defaults is one of the most common hacker attacks. Most software is shipped with a default configuration that makes it easy to install and setup the application. You should change the default settings to secure the system.
Which of the following is NOT an example of default installation?

ICMP ping and ping sweeps are used to check for active systems and to check

What does black box testing mean?