This assignment covers chapter 4 in your Network Security, Firewalls, and VPNs textbook Question 1 is a network attack in which an unauthorized person gains access to a network and stays there undetected for a long period of time A (an) The purpose of such an attack is to steal data, not to damage the network or organization Question 2 A (an)_i properly or to announce an error is a message sent by a service in response to a valid or invalid query. Its function is to confirm communication is functioning Question 3 A (an) channel describes an unknown, secret pathway of communication Question 4 A command is given to a software interface with a system that allows code execution. Question 5 Arbitrary execution is the name given to an exploit that allows a hacker to run any command-line function on a compromised system Question 6 is a term used to describe a feature added to the NTFS file system to support files from POSIX, OS/2, and Macintosh Question 7 engineering attack. Question 8 calling is a term used to describe a tactic of pursuing and extracting information for the purpose of making a sale or performing a social refers to the malicious insertion of scripting code onto a vulnerable Web site Question 9 uses an intentional discharge made to damage or destroy electronic equipment ranging from cell phones to computers and servers Question 10 refers to a logical division of data composed of one or more sectors on a hard drive