The primary objective of an IS auditor when reviewing the installation of a new server is to ensure that security parameters are set in accordance with the organization's policies. Security parameters are settings or options that control the security level and behavior of the server, such as authentication methods, encryption algorithms, access rights, audit logs, firewall rules, or password policies7. The organization's policies are documents that define the security goals, requirements, standards, and guidelines for the organization's information systems. An IS auditor should verify that security parameters are set in accordance with the organization's policies to ensure that the new server complies with the organization's security expectations and regulations. The other options are less important or incorrect because:
* A. Security parameters should not be set in accordance with the manufacturer's standards alone, as they may not reflect the organization's specific security needs and environment. The manufacturer's standards are general recommendations or best practices for configuring the server's security parameters based on common scenarios and threats. An IS auditor should compare the manufacturer's standards with the organization's policies and identify any gaps or conflicts that need to be resolved.
* B. A detailed business case should have been formally approved prior to the purchase of a new server rather than during its installation. A business case is a document that justifies the need for a new server based on its expected benefits, costs, risks, and alternatives. A business case should be approved by senior management before initiating a project to acquire a new server.
* D. The procurement project should have invited tenders from at least three different suppliers before purchasing a new server rather than during its installation. A tender is a formal offer or proposal to provide a product or service at a specified price and quality. Inviting tenders from multiple suppliers helps to ensure a fair and competitive procurement process that can result in the best value for money and quality for the organization. References: Server Security - ISACA, [Information Security Policy - ISACA], [Server Hardening - ISACA], [Business Case - ISACA], [Tender - ISACA], [Procurement Management - ISACA]

The greatest concern for an IS auditor when auditing an organization's IT strategy development process is that information security was not included as a key objective in the IT strategic plan. Information security is a vital component of IT strategy, as it ensures the confidentiality, integrity and availability of information assets, and supports the business objectives and regulatory compliance. The other options are not as significant as the lack of information security in the IT strategic plan. References: CISA Review Manual (Digital Version), Chapter 1, Section 1.31

The security architecture of an online application is a design that describes how various security components and controls are integrated and configured to protect the application from internal and external threats. When auditing the security architecture of an online application, an IS auditor should first review the location of the firewall within the network, as this determines how effectively the firewall can filter and monitor the traffic between different network segments and zones. The firewall standards, configuration, and firmware version are also important aspects to review, but they are secondary to the location of the firewall.

For an organization that has plans to implement web-based trading, it would be most important for an IS auditor to verify that the organization's information security plan includes security requirements for the new application. Security requirements are statements that define what security features and functions are needed to protect the confidentiality, integrity, and availability of the web-based trading application and its data.
Security requirements should be identified and documented during the planning phase of the application development life cycle, before any design or coding activities take place. Attributes for system passwords, security training prior to implementation, and firewall configuration for the web server are also important aspects of information security, but they are not as essential as security requirements for ensuring that the web- based trading application meets its security objectives.