The best option to provide an IS auditor assurance that the interface between a point-of-sale (POS) system and the general ledger is transferring sales data completely and accurately is A. Electronic copies of customer sales receipts are maintained. Electronic copies of customer sales receipts are records of the transactions that occurred at the POS system, which can be compared with the data transferred to the general ledger. This can help detect any errors, omissions, or discrepancies in the data transfer process and ensure that the sales data is complete and accurate.
The other options are not as effective as A in providing assurance that the interface between the POS system and the general ledger is transferring sales data completely and accurately. B. Monthly bank statements are reconciled without exception. Monthly bank statements are records of the cash inflows and outflows of the organization, which may not match with the sales data recorded by the POS system and the general ledger.
For example, there may be delays, discounts, returns, or refundsthat affect the cash flow but not the sales revenue. Therefore, reconciling monthly bank statements without exception does not necessarily mean that the sales data is complete and accurate. C. Nightly batch processing has been replaced with real-time processing. Nightly batch processing is a method of transferring data from the POS system to the general ledger in batches at a scheduled time, usually at night. Real-time processing is a method of transferring data from the POS system to the general ledger as soon as the transactions occur. Real-time processing may improve the timeliness and efficiency of the data transfer process, but it does not guarantee that the sales data is complete and accurate. There may still be errors, omissions, or discrepancies in the data transfer process that need to be detected and corrected. D. The data transferred over the POS interface is encrypted.
Encryption is a process of transforming data into an unreadable form using a secret key or algorithm, so that only authorized parties can access the original data. Encryption protects the confidentiality and security of the data transferred over the POS interface, but it does not ensure that the sales data is complete and accurate.
There may still be errors, omissions, or discrepancies in the data transfer process that need to be detected and corrected.
References:
ISACA, CISA Review Manual, 27th Edition, 2019, p. 2471
ISACA, CISA Review Questions, Answers & Explanations Database - 12 Month Subscription2 Sales Audit Overview - Oracle3 Notes on Audit of Ledgers - Guidelines to Auditors - Accountlearning

In the PDCA cycle, the "Plan" phase is where targets and objectives are defined. Focusing on this phase allows the auditor to evaluate the accuracy and appropriateness of the defined targets before they are implemented and measured in subsequent phases.
References
* ISACA CISA Review Manual 27th Edition, Page 315-316 (PDCA Cycle)

Comprehensive and Detailed Step-by-Step Explanation:
To ensure that theBCP aligns with business strategy, aBusiness Impact Analysis (BIA)is the most valuable resource.
* Option A (Incorrect):DRP testing resultsshow how wellsystems recover, but they do notestablish strategic alignmentwith business priorities.
* Option B (Correct):ABIA identifies critical processes, financial impact, and business priorities, ensuring that theBCP is alignedwith strategic goals.
* Option C (Incorrect):Thecorporate risk management policyis broader and does not focus onbusiness continuity priorities.
* Option D (Incorrect):KPIs measure performance, but they do notdefine business continuity needs.
Reference:ISACA CISA Review Manual -Domain 4: Information Systems Operations and Business Resilience- CoversBCP, BIA, and business continuity alignment.

The greatest concern for an IS auditor reviewing contracts for licensed software that executes a critical business process is that software escrow was not negotiated. Software escrow is an arrangement where a third-party holds a copy of the source code and documentation of a licensed software in a secure location. The software escrow agreement specifies the conditions under which the licensee can access the escrowed materials, such as in case of bankruptcy, termination, or breach of contract by the licensor. Software escrow is important for ensuring the continuity and availability of a critical business process that depends on a licensed software. Without software escrow, the licensee may face significant risks and challenges in maintaining, modifying, or recovering the software in case of any disruption or dispute with the licensor. References:
* CISA Review Manual (Digital Version)
* CISA Questions, Answers & Explanations Database

An organization is shifting to a remote workforce. In preparation, the IT department is performing stress and capacity testing of remote access infrastructure and systems. This type of control is being implemented to direct or guide actions to achieve a desired outcome. Therefore, it is a directive control. Directive controls are proactive controls that seek to prevent undesirable events from occurring. They include policies, standards, procedures, guidelines, training, and testing. Detective controls are reactive controls that seek to identify undesirable events that have already occurred. They include monitoring, logging, auditing, and reporting.
Preventive controls are proactive controls that seek to avoid undesirable events from occurring. They include authentication, encryption, firewalls, and antivirus software. Compensating controls are alternative controls that provide a similar level of protection as the primary controls when the primary controls are not feasible or cost-effective. They include segregation of duties, manual reviews, and backup systems. References: CISA Review Manual (Digital Version), [ISACA Glossary of Terms]