What encryption method is often referred to as a “shift” cipher?

What is the most stealthy way to find out what type of server a website is running?

What protocol uses network port 443?

Alice, a network security engineer, is helping Bob protect his company’s web server from SYN flood attacks. She implements a technique that involves sending a specially crafted TCP packet with a unique sequence number to clients attempting to establish a connection. This packet requires the client to respond correctly before the server allocates resources for the connection. What defensive mechanism has Alice implemented to mitigate the risk of SYN flood attacks on Bob’s web server?

One type of stimulus equivalence represents generalized identify matching and is represented by the equation A = A. Which one is this?

___________________________ risk is the threat that remains after all efforts to identify and eliminate risk have been made.   

Understanding the various types of DoS attacks and their symptoms is crucial. Which type of attack is indicated by the symptom of leaving a connection half-open?

What powerful Linux command can you use to edit a file within the terminal? 

  The above image is of what tool that can be used for the purpose of active scanning or enumeration?

What command is responsible for these results?