ISO/IEC 27002:2022 provides guidance for selecting, implementing, and managing information security controls. It is not the certification requirements standard; that role belongs to ISO/IEC 27001. ISO/IEC 27002 supports organizations by explaining the purpose of each control, the implementation guidance, and other related information needed to apply controls appropriately. Its controls are grouped into organizational, people, physical, and technological themes. The standard is intended to be used as a reference when organizations design security measures based on their risks, business needs, legal obligations, contractual requirements, and information security objectives. Therefore, option A is correct because "guidance" is the core function of ISO/IEC 27002. Option B is incorrect because ISO/IEC 27002 does not set mandatory requirements for certification. Option C is related to risk management, but it is not the main purpose of ISO
/IEC 27002; risk management guidance is more directly associated with ISO/IEC 27005. ISO/IEC 27002 guides control implementation after risk and control needs are determined. References/Chapters: ISO/IEC
27002:2022, Clause 1 Scope; Clause 4 Structure of the standard; Controls 5-8.

Company A has implemented Control 8.23, Web filtering. Web filtering is intended to protect systems from compromise by preventing access to known malicious or inappropriate web resources. Blocking IP addresses or domains associated with malicious websites is a typical web filtering technique. It can reduce exposure to malware, phishing pages, command-and-control infrastructure, drive-by downloads, credential harvesting, and unauthorized content. Control 8.11, Data masking, is unrelated because it protects sensitive data by obscuring or substituting values so users or systems do not see the original data. Control 5.18, Access rights, concerns granting, reviewing, modifying, and removing user access privileges to information and systems. Browser configuration that blocks malicious destinations is not primarily user access rights management; it is filtering web traffic based on destination risk. ISO/IEC 27002 places web filtering under technological controls because it is implemented through browsers, gateways, DNS filtering, proxies, endpoint tools, or secure web gateways. Therefore, option B is verified. References/Chapters: ISO/IEC 27002:2022, Control 8.23 Web filtering; Control 8.7 Protection against malware; Control 8.20 Network security.
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When using cryptography, organizations should consider roles and responsibilities for key management.
Cryptographic controls are only effective when keys are properly generated, stored, distributed, rotated, backed up, revoked, destroyed, and protected from unauthorized access. Weak key management can defeat strong algorithms because compromise of the key can expose encrypted information or allow unauthorized signing, decryption, or impersonation. ISO/IEC 27002 Control 8.24, Use of cryptography, guides organizations to define rules for effective cryptographic use, including protection of confidentiality, authenticity, integrity, and non-repudiation where relevant. Key management responsibilities must be assigned clearly so that ownership, custody, approval, recovery, and emergency access are controlled. Option B relates to project security management, not cryptographic implementation specifically. Option C relates to network security and filtering, not cryptographic key governance. Cryptography requires policy decisions about algorithms, key lengths, certificate management, lifecycle handling, legal restrictions, and separation of duties. The exam's correct answer is therefore option A because key management is a central technical and governance constraint of cryptographic protection. References/Chapters: ISO/IEC 27002:2022, Control 8.24 Use of cryptography; Control 5.15 Access control; Control 5.17 Authentication information.

The situation describes a people-related operational threat: data input error by employees. The root cause is not a malicious external attack or theft; it is that employees cannot reliably follow complicated processing procedures. ISO/IEC 27002 recognizes that people, competence, awareness, and documented procedures are essential to information security. When procedures are unclear, excessive, or difficult to follow, employees may enter incorrect data, omit fields, select wrong categories, mishandle classifications, misroute information, or unintentionally corrupt records. This primarily threatens integrity because the information may no longer be accurate or complete. Hacking would involve unauthorized technical intrusion, and information theft would involve intentional unauthorized taking or disclosure of information. Neither is stated in the scenario.
ISO/IEC 27002 addresses this type of risk through information security awareness, education and training, documented operating procedures, clear responsibilities, and appropriate segregation of duties. Effective controls should make correct behavior practical and repeatable, not merely documented. Therefore, the verified answer is option A. References/Chapters: ISO/IEC 27002:2022, Control 6.3 Information security awareness, education and training; Control 5.37 Documented operating procedures; Control 5.3 Segregation of duties.