The correct technical answer is token ring network. In a ring topology, devices are connected in a circular path, and data travels around the ring. If one device or connection in the ring fails and no bypass or redundancy exists, communication around the ring can be disrupted. A star network is usually affected only if the central hub or switch fails; one endpoint device failure normally does not bring down the whole network.
A mesh network is the most resilient because multiple paths exist. A bus network is vulnerable to backbone cable failure, but the question specifically says one device fails, not the main cable. Internal auditors reviewing network resilience should understand topology-related single points of failure. Therefore, Option C is correct.

A targeted approach is used when internal audit performs a specific engagement focused directly on organizational culture, including culture-related processes, controls, risks, and indicators. This differs from an integrated approach, where culture considerations are embedded into multiple audits across the audit plan. A top-down approach would begin with senior leadership, governance, tone at the top, and strategic cultural expectations. A blended approach would combine direct culture audits with culture assessment within other engagements. In this question, the CAE scheduled an assurance engagement specifically on key processes and controls related to organizational culture, making it a focused or targeted engagement. Therefore, Option C is correct.

External auditors may rely on internal audit's work if they evaluate the objectivity, competence, and quality of the internal audit function. If satisfied, they may use internal audit work to support their opinion, reducing duplication.
Option A is incorrect because external auditors do not manage internal audit. Option B is too restrictive, as reliance is allowed under auditing standards. Option D is false because internal audit can share relevant work with external auditors.
Reference:
IIA Standards - Standard 2050: Coordination and Reliance; ISA 610 (Using the Work of Internal Auditors).

Outsourced processes remain part of the audit universe because the organization retains accountability for risks, compliance, reporting, and service outcomes. The most accurate statement is that key controls are typically more difficult to audit because they are designed and managed externally. Internal audit may need service organization control reports, contractual audit rights, vendor evidence, site visits, management monitoring reports, or third-party assurance. Option A is wrong because outsourcing does not transfer accountability away from the organization. Option B is not generally true; independence is not automatically improved by outsourcing. Option D may be true in some cases, but it is not a general rule. Internal audit should ensure outsourced controls are visible, testable, and contractually enforceable. Therefore, Option C is correct.

When management agrees to address audit issues, the CAE must ensure that the final report documents management's agreement and corrective action plan, including implementation timelines. This ensures accountability and enables proper follow-up monitoring.
Option B (follow-up engagement) may happen later, but the first step is proper documentation. Option C is unnecessary since management already agreed to corrective action. Option D is inappropriate because it is management's responsibility to develop and own the action plan, not internal audit's.
Reference:
IIA Standards - Standard 2410: Criteria for Communicating; Standard 2500: Monitoring Progress.