CISA-KR 문제 126
The organization's software inventory is not complete. This finding would be of greatest concern to an IS auditor assessing an organization's patch management process because:
A software inventory is a list of all the software assets that an organization owns, uses, or manages. A software inventory is essential for effective patch management, as it helps identify the software that needs to be updated, the patches that are available, and the dependencies and compatibility issues that may arise. Without a complete software inventory, an organization may miss some critical patches, expose itself to security risks, and waste resources on unnecessary or redundant patches.
Applications frequently need to be rebooted for patches to take effect. This finding would be of moderate concern to an IS auditor assessing an organization's patch management process because:
Rebooting applications for patches to take effect is a common and expected practice in some cases, especially for operating system or kernel patches. However, frequent reboots may indicate that the organization is not applying patches in a timely or efficient manner, or that the patches are not well-designed or tested. Frequent reboots may also cause disruption to the business operations and user experience, and increase the risk of data loss or corruption.
Software vendors are bundling patches. This finding would be of low concern to an IS auditor assessing an organization's patch management process because:
Bundling patches is a practice where software vendors combine multiple patches into a single package or update. Bundling patches can have some advantages, such as reducing the number of downloads and installations, simplifying the patch management process, and ensuring consistency and compatibility among patches. However, bundling patches can also have some disadvantages, such as increasing the size and complexity of the updates, delaying the delivery of critical patches, and introducing new bugs or vulnerabilities.
Testing patches takes significant time. This finding would be of low concern to an IS auditor assessing an organization's patch management process because:
Testing patches is a vital step in the patch management process, as it helps ensure that the patches are functional, secure, and compatible with the existing software and hardware environment.
Testing patches can take significant time, depending on the scope, complexity, and frequency of the patches. However, testing patches is a necessary investment to avoid potential problems or failures that could result from applying untested or faulty patches.
References:
Best practices for patch management
Server Patch Management: Best Practices and Tools
11 Key Steps of the Patch Management Process
CISA-KR 문제 127
Network topology diagrams are the most important for an IS auditor to review when evaluating the design of controls related to network monitoring, because they show how the network components are connected and configured, and what security measures are in place to protect the network from unauthorized access or attacks. Incident monitoring logs, the ISP service level agreement, and reports of network traffic analysis are useful for evaluating the effectiveness and performance of network monitoring, but not the design of controls.
References: CISA Review Manual (Digital Version), Chapter 5, Section 5.3.3
CISA-KR 문제 128
The IS auditor should inform audit management of the earlier involvement in designing the application. This is to ensure that there is no conflict of interest or bias that may affect the objectivity or independence of the audit.
Audit management can then decide whether to assign a different auditor or to proceed with the same auditor with appropriate safeguards. The other options are not appropriate for the IS auditor to do in this situation.
Refusing the assignment to avoid conflict of interest is an extreme measure that may not be necessary or feasible, especially if there are no other qualified auditors available. Using the knowledge of the application to carry out the audit is risky, as it may lead to overlooking or ignoring potential issues or errors in the application. Modifying the scope of the audit is not advisable, as it may compromise the quality or completeness of the audit. References: CISA Review Manual (Digital Version), Chapter 2, Section 2.1
CISA-KR 문제 129
The most important aspect of an application development acceptance test is that user management approves the test design before the test is started, as this ensures that the test objectives, criteria, and procedures are aligned with the user requirements and expectations. The programming team's involvement in the testing process, the testing of data files for valid information before conversion, and the quality assurance (QA) team's charge of the testing process are also important, but they are not as critical as user management's approval of the test design. References: CISA Review Manual (Digital Version), Chapter 4, Section 4.4.2
CISA-KR 문제 130
The best way to sanitize a hard disk for reuse to ensure the organization's information cannot be accessed is data wiping. Data wiping is a process that overwrites the data on the hard disk with random or meaningless patterns, making it unrecoverable by any software or hardware methods. Data wiping can provide a high level of security and assurance that the organization's information is permanently erased from the hard disk, and that it cannot be accessed by unauthorized parties or malicious actors.
Re-partitioning is not a way to sanitize a hard disk for reuse, but rather a way to organize the hard disk into different logical sections or volumes. Re-partitioning does not erase the data on the hard disk, but only changes the structure and allocation of the disk space. Re-partitioning may make the data inaccessible to the operating system, but not to other tools or methods that can scan or recover the data from the disk sectors.
Degaussing is a way to sanitize a hard disk for reuse, but only for magnetic hard disks, not solid state drives (SSDs). Degaussing is a process that exposes the hard disk to a strong magnetic field, which disrupts and destroys the magnetic alignment of the data on the disk platters. Degaussing can effectively erase the data on magnetic hard disks, but it can also damage or render unusable the electronic components of the hard disk, such as the read/write heads or circuit boards. Degaussing also does not work on SSDs, which store data using flash memory cells, not magnetic media.
Formatting is not a way to sanitize a hard disk for reuse, but rather a way to prepare the hard disk for use by an operating system. Formatting is a process that creates a file system on the hard disk, which defines how the data is stored and accessed on the disk. Formatting does not erase the data on the hard disk, but only deletes the file system metadata and marks the disk space as available for new data. Formatting may make the data invisible to the operating system, but not to other tools or methods that can restore or recover the data from the disk sectors.
References:
How to Wipe A Hard Drive for Reuse? Check the Quickest Way to Wipe A Hard Drive - EaseUS 1 HP PCs - Using Secure Erase or HP Disk Sanitizer 2 HOW to QUICKLY and PERMANENTLY SANITIZE ANY DRIVE (SSD, USB thumb drive ...)
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