When reviewing the effectiveness of data center operations, the IS auditor would FIRST establish that system performance:
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A. B. C. D.A.
When reviewing the effectiveness of data center operations, an IS auditor must ensure that system performance meets the required levels. The FIRST step in establishing this is to ensure that system performance is monitored and reported against agreed service levels.
Option A is correct because monitoring and reporting system performance against agreed service levels provide an objective and measurable standard to evaluate system performance. Agreed service levels should be established as part of the service level agreements (SLAs) with customers or users. The IS auditor should verify that the agreed service levels are being met and reported on a regular basis.
Option B is incorrect because expected usage levels established at implementation may not be accurate or relevant to current usage levels. The IS auditor should focus on current usage levels and ensure that system performance meets the needs of the business.
Option C is incorrect because manufacturer's specifications may not be relevant or appropriate to the organization's needs. The IS auditor should focus on ensuring that the system meets the organization's requirements, not the manufacturer's specifications.
Option D is incorrect because generally accepted reliability levels may not be relevant to the organization's needs. The IS auditor should focus on ensuring that the system meets the organization's requirements, not industry standards.
In summary, the FIRST step in establishing the effectiveness of data center operations is to ensure that system performance is monitored and reported against agreed service levels, as specified in SLAs with customers or users.