The most concerning thing for an IS auditor reviewing an IT strategy document is that the strategic IT goals are derived solely from the latest market trends. An IT strategy document is a blueprint that defines how an organization will use technology to achieve its goals. It should be based on a thorough analysis of the organization's internal and external factors, such as its vision, mission, values, objectives, strengths, weaknesses, opportunities, threats, customers, competitors, regulations, and industry standards. An IT strategy document should also align with the organization's business strategy and reflect its unique needs and capabilities. If an IT strategy document is derived solely from the latest market trends, it may not be relevant or appropriate for the organization's specific situation. It may also lack coherence, consistency, feasibility, or sustainability.
The other options are not as concerning as option C. Target architecture is defined at a technical level is not a concern for an IS auditor reviewing an IT strategy document. Target architecture is the desired state of an organization's IT systems in terms of their structure, functionality, performance, security, interoperability, and integration. Defining target architecture at a technical level can help an IS auditor to understand how the organization plans to achieve its strategic IT goals and what technical requirements and standards it needs to follow. The previous year's IT strategic goals were not achieved is not a concern for an IS auditor reviewing an IT strategy document. The previous year's IT strategic goals are the outcomes that the organization intended to accomplish with its IT initiatives in the past year. Not achieving these goals may indicate some challenges or gaps in the organization's IT performance or execution. However, this does not necessarily affect the quality or validity of the current IT strategy document. An IS auditor should focus on evaluating whether the current IT strategy document is realistic, measurable, achievable, relevant, and time-bound.
Financial estimates of new initiatives are disclosed within the document is not a concern for an IS auditor reviewing an IT strategy document. Financial estimates are projections of the costs and benefits of new initiatives that are part of the IT strategy document. Disclosing financial estimates within the document can help an IS auditor to assess whether the new initiatives are aligned with the organization's budget and resources and whether they provide value for money. References: IT Strategy Template for a Successful Strategic Plan | Gartner, Definitive Guide to Developing an IT Strategy and Roadmap - CioPages, An Example of a Well-Developed IT Strategy Plan - Resolute

Incremental backups are backups that only copy the data that has changed since the last backup, whether it was a full or incremental backup. The main reason to use incremental backups is to minimize the backup time and resources, as they require less storage space and network bandwidth than full backups. Incremental backups can also improve key availability metrics, such as recovery point objective (RPO) and recovery time objective (RTO), but that is not their primary purpose. Reducing costs associated with backups and increasing backup resiliency and redundancy are possible benefits of incremental backups, but they depend on other factors, such as the backup frequency, retention policy, and media type. References: CISA Review Manual (Digital Version): Chapter 5 - Information Systems Operations and Business Resilience