CompTIA PT0-002 Online Practice Questions and Exam Preparation

CompTIA PT0-002 Online Questions & Answers

• Question 121:

  A penetration tester wants to perform a SQL injection test.

  Which of the following characters should the tester use to start the SQL injection attempt?

  A. Colon
  B. Double quote mark
  C. Single quote mark
  D. Semicolon
  C. Single quote mark

  ---

  Explanation

  The single quote mark (') is a common character used to test for SQL injection vulnerabilities. This character is often used to terminate a string in SQL queries. By injecting a single quote mark into an input field, a penetration tester can

  determine whether the application is susceptible to SQL injection based on the resulting error messages or behavior of the application. The single quote mark is typically used first because it is straightforward and effective in revealing SQL

  injection flaws. Other characters like double quotes or semicolons might also be useful in specific contexts, but the single quote is the standard starting point for SQL injection testing.

  References:

  OWASP SQL Injection Guide: OWASP SQL Injection

  Demonstrations of SQL injection techniques in various penetration testing scenarios.

• Question 122:

  Which of the following should a penetration tester attack to gain control of the state in the HTTP protocol after the user is logged in?

  A. HTTPS communication
  B. Public and private keys
  C. Password encryption
  D. Sessions and cookies
  D. Sessions and cookies

  ---

  Explanation

• Question 123:

  A penetration tester was able to compromise a web server and move laterally into a Linux web server. The tester now wants to determine the identity of the last user who signed in to the web server. Which of the following log files will show this activity?

  A. /var/log/messages
  B. /var/log/last_user
  C. /var/log/user_log
  D. /var/log/lastlog
  D. /var/log/lastlog

  ---

  Explanation

  The /var/log/lastlog file is a log file that stores information about the last user to sign in to the server. This file stores information such as the username, IP address, and timestamp of the last user to sign in to the server. It can be used by a penetration tester to determine the identity of the last user who signed in to the web server, which can be helpful in identifying the user who may have set up the backdoors and other malicious activities.

• Question 124:

  Which of the following situations would MOST likely warrant revalidation of a previous security assessment?

  A. After detection of a breach
  B. After a merger or an acquisition
  C. When an organization updates its network firewall configurations
  D. When most of the vulnerabilities have been remediated
  D. When most of the vulnerabilities have been remediated

  ---

  Explanation

• Question 125:

  Which of the following components should a penetration tester most likely include in a report at the end of an assessment?

  A. Metrics and measures
  B. Client interviews
  C. Compliance information
  D. Business policies
  A. Metrics and measures

  ---

  Explanation

  A penetration tester should most likely include metrics and measures in a report at the end of an assessment. Metrics and measures provide quantitative data that helps in understanding the extent and impact of vulnerabilities found during the assessment. They offer a clear and objective way to convey the results and the effectiveness of the security controls in place. This data-driven approach aids in prioritizing remediation efforts, benchmarking against industry standards, and demonstrating improvements over time.

  References: OWASP Penetration Testing Methodologies NIST SP 800-115 - Technical Guide to Information Security Testing and Assessment

• Question 126:

  When accessing the URL http://192.168.0-1/validate/user.php, a penetration tester obtained the following output:

  ..d index: eid in /apache/www/validate/user.php line 12

  ..d index: uid in /apache/www/validate/user.php line 13

  ..d index: pw in /apache/www/validate/user.php line 14

  ..d index: acl in /apache/www/validate/user.php line 15

  A. Lack of code signing
  B. Incorrect command syntax
  C. Insufficient error handling
  D. Insecure data transmission
  C. Insufficient error handling

  ---

  Explanation

  The most probable cause for this output is insufficient error handling, which is a coding flaw that occurs when a program does not handle errors or exceptions properly or gracefully. Insufficient error handling can result in unwanted or unexpected behavior, such as crashes, hangs, or leaks. In this case, the output shows that the program is displaying warning messages that indicate undefined indexes in the user.php file. These messages reveal the names of the variables and the file path that are used by the program, which can expose sensitive information or clues to an attacker. The program should have implemented error handling mechanisms, such as try-catch blocks, error logging, or sanitizing output, to prevent these messages from being displayed or to handle them appropriately. The other options are not plausible causes for this output. Lack of code signing is a security flaw that occurs when a program does not have a digital signature that verifies its authenticity and integrity. Incorrect command syntax is a user error that occurs when a command is entered with wrong or missing parameters or options. Insecure data transmission is a security flaw that occurs when data is sent over a network without encryption or protection.

• Question 127:

  A penetration tester uses Hashcat to crack hashes discovered during a penetration test and obtains the following output:

  ad09cd16529b5f5a40a3e15344e57649f4a43a267a97f008af01af803603c4c8 : Summer2023 !!

  7945bb2bb08731fc8d57680ffa4aefec91c784d231de029c610b778eda5ef48b:p@ssWord12 ea88ceab69cb2fb8bdcf9ef4df884af219fffbffab473ec13f20326dc6f84d13: Love-You999

  Which of the following is the best way to remediate the penetration tester's discovery?

  A. Requiring passwords to follow complexity rules
  B. Implementing a blocklist of known bad passwords
  C. Setting the minimum password length to ten characters
  D. Encrypting the passwords with a stronger algorithm
  B. Implementing a blocklist of known bad passwords

  ---

  Explanation

  The penetration tester's discovery of passwords vulnerable to hash cracking suggests a lack of robust password policies within the organization. Among the options provided, implementing a blocklist of known bad passwords is the most effective immediate remediation. This measure would prevent users from setting passwords that are easily guessable or commonly used, which are susceptible to hash cracking tools like Hashcat. Requiring passwords to follow complexity rules (Option A) can be helpful, but attackers can still crack complex passwords if they are common or have been exposed in previous breaches. Setting a minimum password length (Option C) is a good practice, but length alone does not ensure a password's strength against hash cracking techniques. Encrypting passwords with a stronger algorithm (Option D) is a valid long-term strategy but would not prevent users from choosing weak passwords that could be easily guessed before hash cracking is even necessary. Therefore, a blocklist addresses the specific vulnerability exposed by the penetration tester--users setting weak passwords that can be easily cracked. It's also worth noting that the best practice is a combination of strong, enforced password policies, user education, and the use of multi-factor authentication to enhance security further.

• Question 128:

  A penetration tester runs the unshadow command on a machine. Which of the following tools will the tester most likely use NEXT?

  A. John the Ripper
  B. Hydra
  C. Mimikatz
  D. Cain and Abel
  A. John the Ripper

  ---

  Explanation

  https://www.cyberciti.biz/faq/unix-linux-password-cracking-john-the-ripper/

• Question 129:

  A penetration tester joins the assessment team in the middle of the assessment. The client has asked the team, both verbally and in the scoping document, not to test the production networks. However, the new tester is not aware of this request and proceeds to perform exploits in the production environment.

  Which of the following would have MOST effectively prevented this misunderstanding?

  A. Prohibiting exploitation in the production environment
  B. Requiring all testers to review the scoping document carefully
  C. Never assessing the production networks
  D. Prohibiting testers from joining the team during the assessment
  B. Requiring all testers to review the scoping document carefully

  ---

  Explanation

  The scoping document is a document that defines the objectives, scope, limitations, deliverables, and expectations of a penetration testing engagement. It is an essential document that guides the penetration testing process and ensures that both the tester and the client agree on the terms and conditions of the test. Requiring all testers to review the scoping document carefully would have most effectively prevented this misunderstanding, as it would have informed the new tester about the client's request not to test the production networks. The other options are not effective or realistic ways to prevent this misunderstanding.

• Question 130:

  A penetration tester conducted a discovery scan that generated the following:

  

  Which of the following commands generated the results above and will transform them into a list of active hosts for further analysis?

  A. nmap 璷G list.txt 192.168.0.1-254 , sort
  B. nmap 璼n 192.168.0.1-254 , grep "Nmap scan" | awk `{print S5}'
  C. nmap ?open 192.168.0.1-254, uniq
  D. nmap 璷 192.168.0.1-254, cut 璮 2
  B. nmap 璼n 192.168.0.1-254 , grep "Nmap scan" | awk `{print S5}'

  ---

  Explanation

  the NMAP flag (-sn) which is for host discovery and returns that kind of NMAP output. And the AWK command selects column 5 ({print $5}) which obviously carries the returned IP of the host in the NMAP output.

  This command will generate the results shown in the image and transform them into a list of active hosts for further analysis. The command consists of three parts:

  nmap -sn 192.168.0.1-254: This part uses nmap, a network scanning tool, to perform a ping scan (-sn) on the IP range 192.168.0.1-254, which means sending ICMP echo requests to each IP address and checking if they respond. grep

  "Nmap scan": This part uses grep, a text filtering tool, to search for the string "Nmap scan" in the output of the previous part and display only the matching lines. This will filter out the lines that show the start and end time of the scan and only

  show the lines that indicate the status of each host. awk `{print $5}': This part uses awk, a text processing tool, to print the fifth field ($5) of each line in the output of the previous part. This will extract only the IP addresses of each host and

  display them as a list.

  The final output will look something like this:

  192.168.0.1 192.168.0.12 192.168.0.17 192.168.0.34