Steven is a Linux system administrator at an IT company. He wants to disable unnecessary services in the system, which can be exploited by the attackers. Which among the following is the correct syntax for disabling a service?

You are using Wireshark to monitor your network traffic and you see a lot of packages with the FIN, PUSH and URG flags activated; what can you infer about this behavior?

Simon had all his systems administrators implement hardware and software firewalls to ensure network security. They implemented IDS/IPS systems throughout the network to check for and stop any unauthorized traffic that may attempt to enter. Although Simon and his administrators believed they were secure, a hacker group was able to get into the network and modify files hosted on the company's website.
After searching through the firewall and server logs, no one could find how the attackers were able to get in. He decides that the entire network needs to be monitored for critical and essential file changes. This monitoring tool alerts administrators when a critical file is altered. What tool could Simon and his administrators implement to accomplish this?

An attacker uses different types of password cracking techniques to crack the password and gain unauthorized access to a system. An attacker uses a file containing a list of commonly used passwords. They then upload this file into the cracking application that runs against the user accounts. Which of the following password cracking techniques is the attacker trying?

Which of the following TCP/IP state transitions represents no connection state at all?