For as long as computer systems have existed, password attacks have also existed. With this type of attack, the attacker seeks to gain access to systems or files by using the actual password required for that access. There are many different forms of password attacks, including the following:
Brute-force password attack: In this type of attack, the attacker tries all possible password combinations until a match is made. For example, a brute-force attack might start with the letter a and go through the letter z, and then the attacker might attempt the letters aa through zz, continuing to try combinations until the password is determined. Using complicated passwords - with a mixture of upperand lowercase letters as well as special characters and numbers - can help prevent brute-force attacks.
Dictionary password attack: In this type of attack, the attacker tries multiple password guesses.
However, a dictionary attack is based on a dictionary of commonly used words rather than trying all possible combinations, as in a brute-force attack. Picking a password that is not a common word helps thwart dictionary attacks.

FTP (File Transfer Protocol) is a system that would most likely be found in a screened subnet. A screened subnet, or triple-homed firewall, is a network architecture where a single firewall is used with three network interfaces. It provides additional protection from outside cyber attacks by adding a perimeter network to isolate or separate the internal network from the public-facing internet1. A screened subnet typically hosts systems that need to be accessed by both internal and external users, such as web servers, email servers, or FTP servers. Reference: https://www.techtarget.com/searchsecurity/definition/screened-subnet#:~:text=A%20screened%20subnet%2C%20or%20triple-homed%20firewall%2C%20refers%20to,a%20perimeter%20network%20to%20isolate%20or%20separate%20the 1