CEHPC日本語版参考書 & CEHPC日本語認定対策CertiProfのCEHPC試験準備は、テストヒット率が高いため、98％〜100％の合格率です。 したがって、当社のCEHPC学習教材は効果的であるだけでなく、有用でもあります。 誰もが知っているように、時間は誰にとっても非常に重要です。 一部の候補者は、自分の仕事や家族で非常に忙しいです。 CEHPC試験の審査に時間をかけることは非常に困難です。 ただし、CEHPC試験の教材を使用する場合、学習する時間はほとんどなく、Ethical Hacking Professional Certification Exam合格率は高くなります。 CEHPC学習教材はあなたの信頼に値します。 CertiProf Ethical Hacking Professional Certification Exam 認定 CEHPC 試験問題 (Q26-Q31):質問 # 26
What is the best practice to protect against malware?
A. Installing and keeping antivirus software up to date.
B. Clicking on suspicious links to verify their authenticity.
C. Sharing login information on suspicious websites.
正解：A
解説：
One of the most effective best practices to protect against malware isinstalling and regularly updating antivirus software, making option C the correct answer. Antivirus and endpoint protection solutions are designed to detect, block, and remove malicious software such as viruses, worms, trojans, ransomware, and spyware.
Modern malware evolves rapidly, using obfuscation and zero-day techniques to bypass outdated defenses.
Keeping antivirus software up to date ensures that the latest malware signatures, heuristics, and behavioral detection mechanisms are in place. Ethical hackers emphasize this practice because many successful attacks exploit systems with outdated or disabled security software.
Option A is incorrect because sharing login credentials on suspicious websites significantly increases the risk of malware infection and credential theft. Option B is incorrect because clicking on suspicious links is a common infection vector used in phishing and malware distribution campaigns.
From an ethical hacking perspective, malware prevention is part ofdefense-in-depth. Antivirus software should be combined with patch management, least-privilege access, secure browsing habits, and user awareness training. Ethical hackers often demonstrate how quickly unprotected systems can be compromised to highlight the importance of these controls.
Strong malware protection reduces attack surfaces, prevents data loss, and supports incident response efforts.
Maintaining updated antivirus software is a foundational information security control in modern environments.
質問 # 27
Can all computers be hacked?
A. Yes, all computer equipment can be hacked without any complications.
B. No, only computers that are not updated with security patches and have exposed ports can be hacked.
C. Yes, all computers are hackable.
正解：C
解説：
From a cybersecurity and ethical hacking perspective, the most accurate answer isoption C: yes, all computers are hackable. This does not mean that all systems are easily compromised, but rather thatno system is 100% secureunder all circumstances.
Security is a matter of risk management, not absolute prevention. Even fully patched systems with strong security controls may be vulnerable to zero-day exploits, misconfigurations, supply-chain attacks, physical access threats, or human factors such as social engineering. Ethical hackers assess these risks to determine how systems could be compromised under realistic threat scenarios.
Option A is incorrect because even updated systems with minimal exposure can still be attacked through advanced techniques. Option B is incorrect because hacking is not always easy or without complications; strong defenses significantly increase the difficulty.
Understanding this concept is critical in modern security strategy. Ethical hacking promotesdefense in depth, continuous monitoring, regular testing, and user awareness rather than reliance on a single control.
Acknowledging that all systems are potentially hackable encourages proactive security practices, timely patching, strong authentication, network segmentation, and incident response planning. Ethical hackers help organizations identify weaknesses early, reduce risk, and improve resilience against evolving cyber threats.
質問 # 28
What is a WAF?
A. A Web Application Firewall (WAF) protects the web application server from multiple attacks.
B. A Web Application Functionality (WAF) protects computers from multiple attacks.
C. A Web Application Form (WAF) protects printers from multiple attacks.
正解：A
解説：
A Web Application Firewall (WAF) is a specialized information security control designed to protect web applications by filtering, monitoring, and blocking HTTP/HTTPS traffic to and from a web service. Unlike a traditional network firewall that filters traffic based on IP addresses and ports, a WAF operates at the Application Layer (Layer 7 of the OSI model). It inspects the actual content of the web traffic to identify and neutralize sophisticated application-level attacks such as SQL Injection (SQLi), Cross-Site Scripting (XSS), and File Inclusion.
A WAF acts as a "reverse proxy," sitting in front of the web application server and acting as an intermediary.
It uses a set of rules (often based on the OWASP Top 10) to determine which traffic is legitimate and which is malicious. For example, if a user submits a search query containing suspicious SQL commands, the WAF will recognize the pattern and drop the request before it ever reaches the database, thereby protecting the server from compromise.
In the context of ethical hacking, a WAF is a formidable defense that testers must learn to navigate. During a penetration test, a WAF may block automated scanning tools, forcing the tester to use manual, stealthy techniques to identify vulnerabilities. For organizations, implementing a WAF is a critical "defense-in-depth" strategy. Even if a web application has an underlying code vulnerability, the WAF can provide a "virtual patch" by blocking the exploit attempt at the network edge. This allows developers time to fix the code without leaving the application exposed. Mastering WAF configuration and bypass techniques is essential for security professionals who aim to protect modern, web-centric business environments.
質問 # 29
What is a black hat hacker?
A. They check the wiring of installations, provide support to users and are aware of servers in small companies.
B. They use their computer skills to steal confidential information, to infect computer systems, to restrict access to a system.
C. They use their computer skills to protect confidential information to restrict access to a system.
正解：B
解説：
A "Black Hat" hacker is the primary threat actor in the cybersecurity landscape, representing the criminal element of the hacking community. These individuals use their advanced computer skills and technical knowledge with malicious intent to breach security defenses. Their goals typically involve stealing confidential information, infecting computer systems with malware, or restricting access to a system (as seen in DDoS or ransomware attacks) for personal gain, financial profit, or ideological reasons.
Black Hat hackers operate without authorization and often hide their tracks through anonymization tools like VPNs, Tor, and proxy chains. Their methodology involves finding and exploiting vulnerabilities-often
"Zero-Day" flaws that the vendor is not yet aware of-to gain a foothold in a target network. Once inside, they may engage in corporate espionage, sell stolen data on the dark web, or hold an organization's operations hostage.
For a security professional, managing the threat of Black Hat hackers is a continuous cycle of "Threat Hunting" and "Risk Mitigation." Ethical hackers must study the tactics, techniques, and procedures (TTPs) used by Black Hats to build more resilient defenses. While Black Hats are the "adversaries," they also drive the evolution of security technology; as they find new ways to break into systems, the industry must develop new encryption, authentication, and monitoring tools to stop them. Understanding the mindset of a Black Hat-how they prioritize targets and which vulnerabilities they find most attractive-is a key component of the CEH curriculum. It allows defenders to think like their opponents, ensuring that security controls are placed where they are most needed to protect an organization's most valuable confidential assets.
質問 # 30
What is Google Hacking?
A. It refers to the use of certain advanced search techniques in Google's search engine to find sensitive information or vulnerabilities in websites and systems.
B. It is a special browser for ethical hackers seeking to protect systems.
C. Refers to the use of advanced search techniques in the Google engine to find public information without vulnerabilities in websites and systems.
正解：A
解説：
Google Hacking, also known as Google Dorking, is a powerful reconnaissance strategy that involves using advanced search operators within the Google search engine to identify sensitive information or vulnerabilities that are inadvertently exposed on the public internet. By utilizing specific syntax-such as site:, filetype:, intitle:, and inurl:-an attacker or an ethical hacker can filter search results to find "low-hanging fruit" that would be impossible to locate with a standard query.
Common targets of Google Hacking include exposed database configuration files (which might contain passwords), server logs that reveal internal IP addresses, and "Index of" directories that provide a raw view of a server's file structure. For example, a search like filetype:env "DB_PASSWORD" could potentially reveal environment variables for web applications. This is an essential attack vector to mitigate because it requires no specialized hacking software; it simply exploits the fact that Google's crawlers have indexed files that administrators forgot to protect or hide via robots.txt.
Managing this vector involves "Self-Dorking"-regularly searching one's own domain using these advanced techniques to see what information is visible to the public. Mitigation strategies include proper server configuration, ensuring that sensitive files are not stored in the webroot, and using authentication for all administrative interfaces. From a penetration testing perspective, Google Hacking is part of the "Passive Reconnaissance" phase, allowing a tester to gather intelligence about a target's infrastructure without ever sending a single packet directly to the target's servers. This highlights how easily information leakage can lead to a full system compromise if not actively monitored.