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  2. CompTIA Certification
  3. PT0-003 Exam
  4. CompTIA.PT0-003.v2026-01-26.q136 Dumps
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Question 126

You are a penetration tester running port scans on a server.
INSTRUCTIONS
Part 1: Given the output, construct the command that was used to generate this output from the available options.
Part 2: Once the command is appropriately constructed, use the given output to identify the potential attack vectors that should be investigated further.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Correct Answer:
See explanation below.
Explanation:
Part 1 - 192.168.2.2 -O -sV --top-ports=100 and SMB vulns
Part 2 - Weak SMB file permissions
https://subscription.packtpub.com/book/networking-and-servers/9781786467454/1/ch01lvl1sec13
/fingerprinting-os-and-services-running-on-a-target-host
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Question 127

During a penetration test, the tester uses a vulnerability scanner to collect information about any possible vulnerabilities that could be used to compromise the network. The tester receives the results and then executes the following command:
snmpwalk -v 2c -c public 192.168.1.23
Which of the following is the tester trying to do based on the command they used?

Correct Answer: D
The command snmpwalk -v 2c -c public 192.168.1.23 is used to query SNMP (Simple Network Management Protocol) data from a device.
SNMP Enumeration:
Function: snmpwalk is used to retrieve a large amount of information from the target device using SNMP.
Version: -v 2c specifies the SNMP version.
Community String: -c public specifies the community string, which is essentially a password for SNMP queries.
Purpose of the Command:
Validate Results: The tester uses SNMP to gather detailed information about the network devices to confirm the findings of the vulnerability scanner and remove any false positives.
Detailed Information: SNMP can provide detailed information about device configurations, network interfaces, and other settings that can validate the scanner's results.
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Question 128

During a discussion of a penetration test final report, the consultant shows the following payload used to attack a system:
html
Copy code
7/<sCRitP>aLeRt('pwned')</ScriPt>
Based on the code, which of the following options represents the attack executed by the tester and the associated countermeasure?

Correct Answer: D
XSS Attack Explanation:
The payload exploits Cross-Site Scripting (XSS) by injecting obfuscated JavaScript into the application. When rendered, the browser executes the malicious code (e.g., alert('pwned')).
Obfuscation (<sCRitP> instead of <script>) attempts to bypass naive input filters.
Countermeasure:
Implement input sanitization to ensure all user inputs are properly validated and escaped before being processed or rendered.
Other measures include using Content Security Policies (CSP) and output encoding.
Why Not Other Options?
A: This is not arbitrary code execution; it is a browser-based attack.
B: XSS is unrelated to SQL injection.
C: Cross-Site Request Forgery (CSRF) is a different vulnerability targeting session handling, not script injection.
CompTIA Pentest+ Reference:
Domain 3.0 (Attacks and Exploits)
OWASP XSS Prevention Cheat Sheet
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Question 129

An assessor wants to use Nmap to help map out a stateful firewall rule set. Which of the following scans will the assessor MOST likely run?

Correct Answer: A
https://nmap.org/book/scan-methods-ack-scan.html
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Question 130

A penetration tester attempted a DNS poisoning attack. After the attempt, no traffic was seen from the target machine. Which of the following MOST likely caused the attack to fail?

Correct Answer: C
A DNS poisoning attack is an attack that exploits a vulnerability in the DNS protocol or system to redirect traffic from legitimate websites to malicious ones. A DNS poisoning attack works by injecting false DNS records into a DNS server or resolver's cache, which is a temporary storage of DNS information. However, if the DNS cache was not refreshed, then the attack would fail, as the target machine would still use the old and valid DNS records from its cache. The other options are not likely causes of the attack failure.
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