CISA-KR 문제 131
다음 중 조직의 재해 복구 계획(DRP)에 대한 복구 시간 목표(RTO)를 충족하는 접근 방식은 무엇입니까?
정답: B
Explanation
A full interruption test is the most realistic and reliable way to ensure that recovery time objectives (RTOs) are met for an organization's disaster recovery plan (DRP). RTOs are the maximum amount of time that a business can tolerate being offline after a disaster. A full interruption test involves shutting down the primary site and switching over to the backup site, simulating a real disaster scenario. This test can measure the actual time it takes to restore the systems, applications, and functions that are critical for the business continuity. A full interruption test can also reveal any issues or gaps in the DRP that might affect the recovery process.
The other options are not as effective as a full interruption test for ensuring RTOs are met. A cyber resilience test is a type of DR test that focuses on the ability to withstand and recover from cyberattacks. It does not necessarily cover other types of disasters or test the entire DRP. A tabletop test is a low-impact DR test that involves a walkthrough of the DRP with the key stakeholders and staff. It does not involve any actual switching over or testing of the backup systems. A parallel test is a type of DR test that involves running the backup systems alongside the primary systems, without disrupting the normal operations. It does not measure the time it takes to switch over or resume operations at the backup site.
References:
Best Practices For Disaster Recovery Testing
Disaster recovery testing
Disaster Recovery Testing: Everything to Know
A full interruption test is the most realistic and reliable way to ensure that recovery time objectives (RTOs) are met for an organization's disaster recovery plan (DRP). RTOs are the maximum amount of time that a business can tolerate being offline after a disaster. A full interruption test involves shutting down the primary site and switching over to the backup site, simulating a real disaster scenario. This test can measure the actual time it takes to restore the systems, applications, and functions that are critical for the business continuity. A full interruption test can also reveal any issues or gaps in the DRP that might affect the recovery process.
The other options are not as effective as a full interruption test for ensuring RTOs are met. A cyber resilience test is a type of DR test that focuses on the ability to withstand and recover from cyberattacks. It does not necessarily cover other types of disasters or test the entire DRP. A tabletop test is a low-impact DR test that involves a walkthrough of the DRP with the key stakeholders and staff. It does not involve any actual switching over or testing of the backup systems. A parallel test is a type of DR test that involves running the backup systems alongside the primary systems, without disrupting the normal operations. It does not measure the time it takes to switch over or resume operations at the backup site.
References:
Best Practices For Disaster Recovery Testing
Disaster recovery testing
Disaster Recovery Testing: Everything to Know
CISA-KR 문제 132
다음 중 외부 사용자가 파일 서버에 액세스해야 할 때 공격으로부터 조직을 보호하기 위한 IS 감사인의 가장 좋은 권장 사항은 무엇입니까?
정답: C
Explanation
A demilitarized zone (DMZ) is a network segment that is separated from the internal network and the external network, such as the internet, by firewalls or other security devices. A DMZ provides an extra layer of security for the organization's internal network by isolating the servers and services that need to be accessible to external users, such as a file server, from the rest of the network. A DMZ also prevents external users from accessing the internal network directly, as they have to go through two firewalls to reach it. Therefore, setting up a DMZ is an IS auditor's best recommendation to protect an organization from attacks when its file server needs to be accessible to external users12.
The other possible options are:
Enforce a secure tunnel connection: This means that the organization requires external users to establish a secure and encrypted connection, such as a virtual private network (VPN), to access its file server.
This can provide some level of security and privacy for the data transmission, but it does not protect the file server or the internal network from attacks if the connection is compromised or if the external users are malicious. Therefore, enforcing a secure tunnel connection is not an IS auditor's best recommendation to protect an organization from attacks when its file server needs to be accessible to external users3.
Enhance internal firewalls: This means that the organization improves the security and performance of its internal firewalls, which are devices that filter and control the network traffic between different segments of the network. This can provide some level of protection for the internal network from unauthorized or malicious access, but it does not protect the file server or the external network from attacks if the file server is exposed to the internet or if the external network is compromised. Therefore, enhancing internal firewalls is not an IS auditor's best recommendation to protect an organization from attacks when its file server needs to be accessible to external users4.
Implement a secure protocol: This means that the organization uses a secure and standardized protocol, such as Secure File Transfer Protocol (SFTP) or Secure Shell (SSH), to transfer files between its file server and external users. This can provide some level of security and integrity for the data transmission, but it does not protect the file server or the internal network from attacks if the protocol is exploited or if the external users are malicious. Therefore, implementing a secure protocol is not an IS auditor's best recommendation to protect an organization from attacks when its file server needs to be accessible to external users5. References: 1: What Is a DMZ Network and Why Would You Use It? | Fortinet 2:
Demilitarised zone (DMZ) | Cyber.gov.au 3: What Is VPN Tunneling? | Fortinet 4: Firewall - Wikipedia 5: Secure Shell - Wikipedia
A demilitarized zone (DMZ) is a network segment that is separated from the internal network and the external network, such as the internet, by firewalls or other security devices. A DMZ provides an extra layer of security for the organization's internal network by isolating the servers and services that need to be accessible to external users, such as a file server, from the rest of the network. A DMZ also prevents external users from accessing the internal network directly, as they have to go through two firewalls to reach it. Therefore, setting up a DMZ is an IS auditor's best recommendation to protect an organization from attacks when its file server needs to be accessible to external users12.
The other possible options are:
Enforce a secure tunnel connection: This means that the organization requires external users to establish a secure and encrypted connection, such as a virtual private network (VPN), to access its file server.
This can provide some level of security and privacy for the data transmission, but it does not protect the file server or the internal network from attacks if the connection is compromised or if the external users are malicious. Therefore, enforcing a secure tunnel connection is not an IS auditor's best recommendation to protect an organization from attacks when its file server needs to be accessible to external users3.
Enhance internal firewalls: This means that the organization improves the security and performance of its internal firewalls, which are devices that filter and control the network traffic between different segments of the network. This can provide some level of protection for the internal network from unauthorized or malicious access, but it does not protect the file server or the external network from attacks if the file server is exposed to the internet or if the external network is compromised. Therefore, enhancing internal firewalls is not an IS auditor's best recommendation to protect an organization from attacks when its file server needs to be accessible to external users4.
Implement a secure protocol: This means that the organization uses a secure and standardized protocol, such as Secure File Transfer Protocol (SFTP) or Secure Shell (SSH), to transfer files between its file server and external users. This can provide some level of security and integrity for the data transmission, but it does not protect the file server or the internal network from attacks if the protocol is exploited or if the external users are malicious. Therefore, implementing a secure protocol is not an IS auditor's best recommendation to protect an organization from attacks when its file server needs to be accessible to external users5. References: 1: What Is a DMZ Network and Why Would You Use It? | Fortinet 2:
Demilitarised zone (DMZ) | Cyber.gov.au 3: What Is VPN Tunneling? | Fortinet 4: Firewall - Wikipedia 5: Secure Shell - Wikipedia
CISA-KR 문제 133
조직은 IT 정책 개발에서 상향식 접근 방식에서 하향식 접근 방식으로 전환했습니다. 결과는 다음과 같습니다.
정답: A
Explanation
A top-down approach in the development of IT policies means that the policies are derived from the strategic objectives and goals of the organization, and are aligned with the business needs and expectations. This should result in greater consistency across the organization, as the policies will be coherent, integrated and applicable to all levels and functions of the organization. A bottom-up approach, on the other hand, means that the policies are developed by individual units or departments based on their operational needs and preferences, which may lead to inconsistency, duplication or conflict among different policies. References: ISACA Frameworks: Blueprints for Success, IT Governance and Process Maturity
A top-down approach in the development of IT policies means that the policies are derived from the strategic objectives and goals of the organization, and are aligned with the business needs and expectations. This should result in greater consistency across the organization, as the policies will be coherent, integrated and applicable to all levels and functions of the organization. A bottom-up approach, on the other hand, means that the policies are developed by individual units or departments based on their operational needs and preferences, which may lead to inconsistency, duplication or conflict among different policies. References: ISACA Frameworks: Blueprints for Success, IT Governance and Process Maturity
CISA-KR 문제 134
대규모 조직에서는 IT 리소스의 우선순위가 적절하게 지정되지 않아 중요한 프로젝트의 IT 마감일을 놓쳤습니다. 다음 중 이 문제를 해결하기 위한 가장 좋은 권장 사항은 무엇입니까?
정답: B
Explanation
The best recommendation to address the problem of missing IT deadlines on important projects because IT resources are not prioritized properly is to implement project portfolio management (PPM). PPM is the process of analyzing and optimizing the costs, resources, technologies, and processes for all the projects and programs within a portfolio. A portfolio is a collection of projects, programs, and processes that are managed together and aligned with the strategic goals and objectives of the organization. PPM can help the organization to:
Prioritize the most valuable and relevant projects and programs based on their alignment with the organizational strategy, vision, and mission.
Balance the portfolio to ensure that the projects and programs are diversified, feasible, and sustainable, and that they meet the needs and expectations of the stakeholders.
Optimize the allocation, utilization, and coordination of IT resources across the portfolio, such as staff, budget, time, equipment, and software.
Monitor and control the performance and progress of the projects and programs within the portfolio, and evaluate their outcomes and benefits.
By implementing PPM, the organization can improve its IT project delivery and avoid missing deadlines. PPM can also help the organization to increase its efficiency, effectiveness, quality, and value. For more information about PPM, you can refer to the following web search results:
Project Portfolio Management (PPM): The Ultimate Guide - ProjectManager1 A Complete Overview of Project Portfolio Management - Smartsheet2 PPM 101: What Is Project Portfolio Management?3
The best recommendation to address the problem of missing IT deadlines on important projects because IT resources are not prioritized properly is to implement project portfolio management (PPM). PPM is the process of analyzing and optimizing the costs, resources, technologies, and processes for all the projects and programs within a portfolio. A portfolio is a collection of projects, programs, and processes that are managed together and aligned with the strategic goals and objectives of the organization. PPM can help the organization to:
Prioritize the most valuable and relevant projects and programs based on their alignment with the organizational strategy, vision, and mission.
Balance the portfolio to ensure that the projects and programs are diversified, feasible, and sustainable, and that they meet the needs and expectations of the stakeholders.
Optimize the allocation, utilization, and coordination of IT resources across the portfolio, such as staff, budget, time, equipment, and software.
Monitor and control the performance and progress of the projects and programs within the portfolio, and evaluate their outcomes and benefits.
By implementing PPM, the organization can improve its IT project delivery and avoid missing deadlines. PPM can also help the organization to increase its efficiency, effectiveness, quality, and value. For more information about PPM, you can refer to the following web search results:
Project Portfolio Management (PPM): The Ultimate Guide - ProjectManager1 A Complete Overview of Project Portfolio Management - Smartsheet2 PPM 101: What Is Project Portfolio Management?3
CISA-KR 문제 135
다음 중 운영 체제 감사 중에 기본 이미지를 얻는 주된 목적은 무엇입니까?
정답: A
Explanation
The primary purpose of obtaining a baseline image during an operating system audit is to identify atypical running processes. A baseline image is a snapshot of the normal state and configuration of an operating system, including the processes that are expected to run on it. By comparing the current state of the operating system with the baseline image, an IS auditor can detect any deviations or anomalies that may indicate unauthorized or malicious activity, such as malware infection, privilege escalation, or data exfiltration. A baseline image can also help an IS auditor to assess the performance and efficiency of the operating system, as well as its compliance with security standards and policies.
Verifying antivirus definitions (option B) is not the primary purpose of obtaining a baseline image, although it may be a part of the baseline configuration. Antivirus definitions are the files that contain the signatures and rules for detecting and removing malware. An IS auditor may verify that the antivirus definitions are up to date and consistent across the operating system, but this does not require obtaining a baseline image.
Identifying local administrator account access (option C) is not the primary purpose of obtaining a baseline image, although it may be a part of the baseline configuration. Local administrator accounts are user accounts that have full control over the operating system and its resources. An IS auditor may identify and review the local administrator accounts to ensure that they are properly secured and authorized, but this does not require obtaining a baseline image.
Verifying the integrity of operating system backups (option D) is not the primary purpose of obtaining a baseline image, although it may be a part of the backup process. Operating system backups are copies of the operating system data and settings that can be used to restore the system in case of failure or disaster. An IS auditor may verify that the operating system backups are complete, accurate, and accessible, but this does not require obtaining a baseline image.
References: : Linux security and system hardening checklist : CISA Certification | Certified Information Systems Auditor | ISACA : CISA Certified Information Systems Auditor Study Guide, 4th Edition : CISA - Certified Information Systems Auditor Study Guide [Book]
The primary purpose of obtaining a baseline image during an operating system audit is to identify atypical running processes. A baseline image is a snapshot of the normal state and configuration of an operating system, including the processes that are expected to run on it. By comparing the current state of the operating system with the baseline image, an IS auditor can detect any deviations or anomalies that may indicate unauthorized or malicious activity, such as malware infection, privilege escalation, or data exfiltration. A baseline image can also help an IS auditor to assess the performance and efficiency of the operating system, as well as its compliance with security standards and policies.
Verifying antivirus definitions (option B) is not the primary purpose of obtaining a baseline image, although it may be a part of the baseline configuration. Antivirus definitions are the files that contain the signatures and rules for detecting and removing malware. An IS auditor may verify that the antivirus definitions are up to date and consistent across the operating system, but this does not require obtaining a baseline image.
Identifying local administrator account access (option C) is not the primary purpose of obtaining a baseline image, although it may be a part of the baseline configuration. Local administrator accounts are user accounts that have full control over the operating system and its resources. An IS auditor may identify and review the local administrator accounts to ensure that they are properly secured and authorized, but this does not require obtaining a baseline image.
Verifying the integrity of operating system backups (option D) is not the primary purpose of obtaining a baseline image, although it may be a part of the backup process. Operating system backups are copies of the operating system data and settings that can be used to restore the system in case of failure or disaster. An IS auditor may verify that the operating system backups are complete, accurate, and accessible, but this does not require obtaining a baseline image.
References: : Linux security and system hardening checklist : CISA Certification | Certified Information Systems Auditor | ISACA : CISA Certified Information Systems Auditor Study Guide, 4th Edition : CISA - Certified Information Systems Auditor Study Guide [Book]
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