Task 1. Search for error messages in a log fileIn this task, you must navigate to the /home/analyst/logs directory and report on the error messages in the server_logs.txt file. You’ll do this by using grep to search the file and output only the entries that are for errors.Navigate to the /home/analyst/logs directory.Use grep to filter the server_logs.txt file, and return all lines containing the text string error.Note: If you enter a command incorrectly and it fails to return to the command-line prompt, you can press CTRL+C to stop the process and force the shell to return to the command-line prompt.

Task 2. Find files containing specific stringsIn this task, you must navigate to the /home/analyst/reports/users directory and use the correct Linux commands and arguments to search for user data files that contain a specific string in their names.Navigate to the /home/analyst/reports/users directory.Using the pipe character (|), pipe the output of the ls command to the grep command to list only the files containing the string Q1 in their names.

Which of the following commands can be used to search for a specific user's failed login attempts in the /var/log/secure file in a CentOS-based Linux distribution?Question 1Answera.grep "Failed password" /var/log/secure | grep usernameb.find /var/log/secure -name "Failed password" | grep usernamec.locate "Failed password" /var/log/secure | grep usernamed.search "Failed password" /var/log/secure | grep username

Which of the following commands can be used to search for all successful login attempts in the /var/log/secure file in a CentOS-based Linux distribution?Select one:a.search "Accepted password" /var/log/secureb.find /var/log/secure -name "Accepted password"c.grep "Accepted password" /var/log/secured.locate "Accepted password" /var/log/secure

Which of the following commands can be used to search for all successful login attempts in the /var/log/secure file in a CentOS-based Linux distribution?Question 15Answera.find /var/log/secure -name "Accepted password"b.search "Accepted password" /var/log/securec.grep "Accepted password" /var/log/secured.locate "Accepted password" /var/log/secure

Question 5As a security analyst, you are monitoring network traffic and detect a large number of failed login attempts. Which of the following tools would help you investigate this incident? Select two answers.1 pointA network protocol analyzer (packet sniffer)An antivirus softwareAn intrusion detection system (IDS)A cryptographic encoder