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質問 # 63
Recovery Point Objectives and Recovery Time Objectives are based on what system attribute?
正解：C
解説：
Recovery Time Objective (RTO) and Recovery Point Objective (RPO) are continuity and resilience targets that define how quickly a system must be restored and how much data loss is acceptable after an interruption. These objectives are derived primarily from system criticality, meaning how essential the system is to business operations, safety, revenue, legal obligations, and customer commitments. Highly critical systems support mission-essential functions or time-sensitive services, so they require shorter RTOs (restore fast) and smaller RPOs (lose little or no data). Less critical systems can tolerate longer outages and larger data gaps, allowing longer RTOs and RPOs.
Cybersecurity and business continuity documents tie RTO/RPO determination to business impact analysis results. The BIA identifies maximum tolerable downtime, operational dependencies, and the consequences of service disruption and data unavailability. From there, organizations set RTO/RPO targets that align with risk appetite and required service levels. Those targets then drive technical and operational controls such as backup frequency, replication methods, high availability architecture, failover design, disaster recovery procedures, monitoring, and routine recovery testing.
Sensitivity focuses on confidentiality needs and may influence encryption and access controls, but it does not directly define acceptable downtime or data loss. Vulnerability describes weakness exposure and is used for threat/risk management, not recovery objectives. Cost is a constraint when selecting recovery solutions, but RTO/RPO are defined by business need and system importance first-then solutions are chosen to meet those targets within budget.
質問 # 64
Controls that are put in place to address specific risks may include:
正解：C
解説：
Cybersecurity controls are the safeguards an organization implements to reduce risk to an acceptable level. In standard risk-management language, a control is not limited to a one-time review; it is an ongoing capability that is designed, implemented, and operated to prevent, detect, or correct unwanted events. That capability is typically delivered through technology solutions (technical controls) and process solutions (administrative or procedural controls), which is why option B is correct.
Technology controls include items like firewalls, endpoint protection, encryption, multifactor authentication, logging and monitoring, vulnerability scanning, secure configuration baselines, and data-loss prevention. These controls directly enforce security requirements through system behavior and automation, helping reduce the likelihood or impact of threats.
Process controls include policies, standards, access approval workflows, segregation of duties, change management, secure development practices, incident response playbooks, training, and periodic access recertification. These ensure people consistently perform security-critical tasks correctly and create accountability and repeatability.
Options C and D describe possible outcomes or limitations (controls may not fully eliminate risk and may only mitigate part of it), but they are not what controls include. Option A is incorrect because "only initial reviews" are insufficient; reviews can be a component of a control, but effective controls require sustained operation, evidence, and reassessment as systems, threats, and business needs change.
質問 # 65
What is a risk owner?
正解：C
解説：
A risk owner is the individual who is accountable for a specific risk being properly managed to an acceptable level. Accountability means the risk owner has the authority and obligation to ensure the risk is assessed, an appropriate treatment decision is made, and the organization follows through-whether that decision is to mitigate, transfer, avoid, or accept the risk. In many governance models, the risk owner is typically a business or technology leader who "owns" the process, asset, or outcome most affected by the risk, and who can commit resources or approve changes needed to address it.
This is different from the person who performs the mitigation work. A risk owner may delegate tasks to control owners, engineers, or project teams, but they remain accountable for ensuring actions are completed, deadlines are met, residual risk is understood, and exceptions are documented and approved according to policy. The risk owner is also the person who should review changes in risk conditions over time, such as new vulnerabilities, changes in threat activity, or business/process changes that alter impact.
Option C describes an implementer or control owner, not necessarily the accountable party. Option D is simply the discoverer of the risk, and option B is incorrect because risks are often created by circumstances, design choices, or external factors rather than a single person.
質問 # 66
ITIL Information Technology Infrastructure Library defines:
正解：D
解説：
ITIL is a widely adopted framework that defines best-practice guidance for IT Service Management. Its focus is on how organizations design, deliver, operate, and continually improve IT services so they reliably support business outcomes. In cybersecurity and service delivery documentation, ITIL is often referenced because strong service management processes are foundational to secure operations. For example, ITIL practices such as incident management, problem management, change enablement, configuration management, and service continuity help ensure security controls are implemented consistently and that deviations are identified, tracked, and corrected.
ITIL does not define how hardware systems interface securely with one another; that is more aligned with architecture standards, security engineering, and network or platform design frameworks. It also does not prescribe a universal set of components for every technology system; that belongs to reference architectures and enterprise architecture standards. Likewise, ITIL is not primarily a security requirements standard. While ITIL supports security governance through practices like risk management, access management, and information security management integration, it does not itself serve as a mandatory security control catalog.
From a cybersecurity perspective, ITIL contributes by promoting repeatable processes, clear roles and responsibilities, measurable service levels, and continual improvement. These elements reduce operational risk, improve response effectiveness, and strengthen accountability-key requirements for maintaining confidentiality, integrity, and availability in production environments.
質問 # 67
An internet-based organization whose address is not known has attempted to acquire personal identification details such as usernames and passwords by creating a fake website. This is an example of?
正解：C
解説：
Creating a fake website to trick individuals into entering usernames and passwords is a classic example of phishing. Phishing is a social engineering technique where an attacker impersonates a trusted entity to deceive a victim into disclosing sensitive information (credentials, personal data, payment details) or taking an action that benefits the attacker (downloading malware, approving an MFA prompt, wiring funds). A counterfeit login page is commonly used in credential-harvesting campaigns: the victim believes they are authenticating to a legitimate service, but the credentials are captured by the attacker and later used for account takeover. This is not necessarily a breach yet because the question describes an attempt to acquire credentials; a breach would be confirmed unauthorized access or disclosure. While phishing is a kind of threat, "threat" is too broad compared to the specific described behavior. It is also not ransomware, which focuses on encrypting or locking data and demanding payment. Cybersecurity documentation emphasizes layered defenses against phishing: user awareness training, email and web filtering, domain and certificate validation, anti-spoofing controls, strong authentication (especially MFA resistant to prompt fatigue), password managers that reduce credential entry on lookalike domains, and monitoring for suspicious logins. Because the attack relies on deception through a fake website to steal credentials, the best match is phishing.
質問 # 68
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