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人生は勝ち負けじゃない、負けたって言わない人が勝ちなのよ。近年CompTIA PT0-003認定試験の難度で大方の受験生は試験に合格しなかったのに面して、勇者のようにこのチャレンジをやってますか。それで、我々社のCompTIA PT0-003無料の試験問題集サンプルを参考します。自分の相応しい復習問題集バージョン（PDF版、ソフト版を、オンライン版）を選んで、ただ学習教材を勉強し、正確の答えを覚えるだけ、CompTIA PT0-003資格認定試験に一度で合格できます。
質問 # 236
A penetration tester needs to confirm the version number of a client's web application server. Which of the following techniques should the penetration tester use?
正解：C
解説：
Banner grabbing is a technique used to gather information about a service running on an open port, which often includes the version number of the application or server. Here's why banner grabbing is the correct answer:
* Banner Grabbing: It involves connecting to a service and reading the welcome banner or response, which typically includes version information. This is a direct method to identify the version number of a web application server.
* SSL Certificate Inspection: While it can provide information about the server, it is not reliable for identifying specific application versions.
* URL Spidering: This is used for discovering URLs and resources within a web application, not for version identification.
* Directory Brute Forcing: This is used to discover hidden directories and files, not for identifying version information.
References from Pentest:
* Luke HTB: Shows how banner grabbing can be used to identify the versions of services running on a server.
* Writeup HTB: Demonstrates the importance of gathering version information through techniques like banner grabbing during enumeration phases.
Conclusion:
Option C, banner grabbing, is the most appropriate technique for confirming the version number of a web application server.
質問 # 237
During a penetration test, the tester identifies several unused services that are listening on all targeted internal laptops. Which of the following technical controls should the tester recommend to reduce the risk of compromise?
正解：B
解説：
When a penetration tester identifies several unused services listening on targeted internal laptops, the most appropriate recommendation to reduce the risk of compromise is system hardening. Here ' s why:
System Hardening:
Purpose: System hardening involves securing systems by reducing their surface of vulnerability. This includes disabling unnecessary services, applying security patches, and configuring systems securely.
Impact: By disabling unused services, the attack surface is minimized, reducing the risk of these services being exploited by attackers.
Comparison with Other Controls:
Multifactor Authentication (A): While useful for securing authentication, it does not address the issue of unused services running on the system.
Patch Management (B): Important for addressing known vulnerabilities but not specifically related to disabling unused services.
Network Segmentation (D): Helps in containing breaches but does not directly address the issue of unnecessary services.
System hardening is the most direct control for reducing the risk posed by unused services, making it the best recommendation.
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質問 # 238
A penetration tester is attempting to discover vulnerabilities in a company ' s web application. Which of the following tools would most likely assist with testing the security of the web application?
正解：A
解説：
When testing the security of a web application, specific tools are designed to uncover vulnerabilities and issues. Here's an overview of the tools mentioned and why Nikto is the most suitable for this task:
Nikto:
Purpose: Nikto is a web server scanner that performs comprehensive tests against web servers for multiple items, including potentially dangerous files/programs, outdated versions, and other security issues.
Relevance: It is designed specifically for discovering vulnerabilities in web applications, making it the most appropriate choice for a penetration tester targeting a web application.
Comparison with Other Tools:
OpenVAS: A general-purpose vulnerability scanner that targets a wide range of network services and hosts, not specifically tailored for web applications.
Nessus: Similar to OpenVAS, Nessus is a comprehensive vulnerability scanner but is broader in scope and not focused solely on web applications.
sqlmap: This tool is excellent for SQL injection testing but is limited to database vulnerabilities and doesn't cover the full spectrum of web application security issues.
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質問 # 239
A customer adds a requirement to the scope of a penetration test that states activities can only occur during normal business hours. Which of the following BEST describes why this would be necessary?
正解：A
質問 # 240
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?
正解：C
解説：
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+ References:
Domain 3.0 (Attacks and Exploits)
OWASP XSS Prevention Cheat Sheet
質問 # 241
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