CCNA Cisa Operations Resilience Questions

Implementing dependency management in the job scheduler ensures that jobs only run when prerequisites are met, preventing such failures.

Option B is correct because orphaned resources (e.g., unattached EBS volumes, unused Elastic IPs, stale load balancers) continue to incur costs without providing any business value. Detecting and removing them directly eliminates waste, which is a core principle of cloud cost optimization. This practice aligns with the AWS Well-Architected Framework's Cost Optimization pillar, specifically the 'Stop Spending Money on Undifferentiated Heavy Lifting' design principle.

The maximum downtime is the recovery time objective (RTO), and the maximum data loss is the recovery point objective (RPO).

The alternate facility recovery time (24 hours) exceeds the MTD (12 hours), meaning the process would fail its recovery requirement.

The most significant risk is inaccurate cost allocation and potential budget overruns because the orphaned resources are not tagged and are billed under a default account, preventing the organization from accurately attributing cloud costs to the responsible departments. This undermines the purpose of the tagging strategy implemented by the asset management team and can lead to unplanned expenses that are not tracked against any budget owner, directly impacting financial control and operational accountability.

Backup encryption at rest ensures that data stored offsite is protected from unauthorized access, which is a key control for offsite backups.

Option A is correct because notifying all relevant stakeholders in advance is a best practice for a full interruption test. This ensures that business units, IT teams, and external vendors are prepared for the planned outage, minimizing confusion and allowing coordinated execution. Without prior notification, the test could cause unnecessary panic or operational disruption, undermining the controlled nature of the exercise.

Standard changes are pre-approved, low-risk, and follow a defined procedure. Applying a routine security patch that has been tested and approved falls under this category.

A tabletop exercise is a discussion-based test where participants walk through a scenario without executing procedures or activating systems.

Standard changes are pre-approved and low risk; emergency changes require urgent approval. Normal changes require CAB approval.

Secure sanitization of storage media (Option C) is critical because decommissioned servers often contain sensitive data that must be irrecoverably erased to prevent unauthorized access. A formal disposal policy with authorization (Option D) ensures that decommissioning follows a documented, approved process, including verification of sanitization and chain of custody. Together, these controls address both the technical and procedural aspects of secure disposition.

A right-to-audit clause allows the organization to verify the provider's controls and compliance, which is critical for third-party risk management.

The CAB reviews and approves changes based on risk and impact. For a low-risk normal change, the CAB typically authorizes the change, possibly with standard procedures.

Consistently high utilization without planning risks performance degradation and outages. The organization may not be able to handle peak loads.

A right-to-audit clause allows the organization or its auditor to review the provider's controls.

A warm site is partially configured with some hardware, software, and data synchronization, offering a balance between cost and recovery time. For a medium-sized organization, it provides faster recovery than a cold site while being significantly less expensive than a hot site, making it suitable for a region prone to earthquakes where the DR site must be geographically distant.

MTD defines the maximum time a process can be unavailable without causing severe business impact. It sets the recovery time objective (RTO) target.

Dependency management is the correct control because it ensures that job scheduling logic explicitly defines and enforces the order of execution based on predecessor/successor relationships. By configuring dependencies (e.g., using job control language (JCL) with COND parameters or scheduling tools like CA Workload Automation ESP), the system will automatically hold a job until all prerequisite jobs have completed successfully, preventing the failure scenario described.

A comprehensive BCP includes procedures for people, alternate facilities, and communications.

A hot standby site provides near-real-time failover, which supports a 2-hour RTO. Synchronous data replication ensures data loss is minimal, supporting a 30-minute RPO.

Parallel testing is the correct answer because it involves processing live transactions at the alternate site while the primary site remains fully operational. This allows validation of the disaster recovery (DR) systems without risking a service outage, as both sites run concurrently and results are compared for consistency. Unlike a full interruption test, the primary site is not shut down, ensuring business continuity during the test.

Vendor concentration risk arises if the subcontractor is a single point of failure. Fourth-party risk means the organization has no direct control. Exit strategy concerns include difficulty in transitioning if the subcontractor fails.

A known error database (KEDB) is a key output of effective problem management because it records known errors and their workarounds, enabling faster incident resolution and preventing recurrence. The KEDB is populated from root cause analysis findings and is used to link incidents to known problems, supporting ITIL-based problem management processes.

The RTO must be less than or equal to the MTD. Here, RTO (2 hours) is less than MTD (4 hours), so the recovery target is acceptable.

Maximum Tolerable Downtime (MTD) defines the maximum acceptable downtime before severe impact.

The primary recommendation is to include a right-to-audit clause for all subcontractors in the contract. This ensures the organization retains direct oversight and contractual leverage over fourth-party risks, as relying solely on the vendor's assurance without audit rights creates a blind spot in the supply chain. Without such a clause, the organization cannot independently verify the fourth party's compliance with security controls, which is critical for maintaining business resilience.

Emergency changes bypass normal controls, so post-implementation review is critical to ensure the change was effective and did not introduce risks. Without it, undocumented or unauthorized changes may persist.

The auditor should ensure that the rerun procedure specifies the correct restart point to avoid data corruption or reprocessing errors.

A right-to-audit clause allows the customer or its auditor to review the provider's controls.

The service desk acts as a single point of contact for IT support.

Unsupported software no longer receives security patches, making the systems vulnerable to exploitation.

Including right-to-audit clauses in contracts is a key control for managing third-party risk because it grants the IS auditor or the organization the contractual authority to independently verify the vendor's security controls, data handling practices, and compliance with policies. This clause ensures ongoing oversight beyond initial due diligence, allowing for on-site inspections or reviews of the vendor's systems and processes, which is critical for detecting control failures or unauthorized changes that could impact the organization's data.

Vendor concentration risk is the risk of over-reliance on a single vendor. An exit strategy clause ensures the ability to transition away, and a subcontracting controls clause (fourth-party risk) addresses the CSP's use of other vendors that could increase concentration. SLA monitoring is important but not directly for concentration; right-to-audit is a general control; data encryption is about security.

A P1 (Priority 1) incident is the highest severity, typically involving a critical system outage that affects all users or major business operations.

Resource tagging helps allocate costs and track usage. Detecting orphaned resources (e.g., unused instances) prevents unnecessary charges. These are key cloud cost management controls.

A release plan should include a rollback plan (to revert if issues arise) and a testing strategy (to validate the release). Deployment automation is beneficial but not always essential; communication plan is important but secondary to technical components; post-implementation review is after the release.

Software Asset Management (SAM) ensures license compliance and cost optimization. Regular compliance audits prevent legal and financial penalties. License optimization helps avoid over-purchasing or under-licensing.

RAID 5 can tolerate a single disk failure. If a second disk fails during rebuild, the array is broken and data loss occurs.

Option A is correct because in ITIL incident management, P1 (Priority 1) is defined as a critical impact incident that requires an immediate response to restore service, often with a target resolution time of minutes to a few hours. This aligns with the ITIL framework's emphasis on urgency and impact for priority classification.

Effective proactive capacity management includes monitoring trends to forecast future needs and setting threshold alerts to trigger action before capacity issues occur. Analyzing historical costs is financial, not capacity; reviewing backup logs is operational; conducting BIA is for BCP.

End-of-life software no longer receives security patches from the vendor, meaning any newly discovered vulnerabilities will remain unaddressed. This creates a direct and exploitable attack surface, making lack of security patches the most significant risk because it can lead to data breaches, system compromise, and regulatory non-compliance.

P1 incidents are critical and require immediate resolution. With a 4-hour SLA from the time of reporting (10:00 AM), the resolution must occur by 2:00 PM.

Offsite storage of backup media (Option B) is essential because it protects against site-level disasters such as fire, flood, or physical theft. Without geographic separation, a single incident could destroy both the primary data and its backups, making recovery impossible. This control directly supports the recoverability objective by ensuring a usable copy exists outside the primary facility.

If known errors are causing P1 incidents, problem management should have identified workarounds or permanent fixes. The fact that these incidents recur indicates a weakness in the problem management process, which should reduce incidents from known errors.

To restore from incremental backups, you need the last full backup (Sunday) and all incremental backups from Monday through Wednesday.

Backup reliability requires regular testing (restore verification), secure offsite storage to protect against site disasters, and retention aligned with business recovery objectives. Encryption is important but not directly for reliability; compression may affect performance but not reliability.

Availability = MTBF / (MTBF + MTTR) = 200 / (200 + 20) = 200 / 220 ≈ 0.909 = 90.9%.

The most likely reason the RTO was not met is that the alternate site lacked sufficient processing capacity to handle the workload. RTO measures the time to restore service availability; if the failover site cannot support the required compute, memory, or I/O throughput, restoration will be delayed or fail outright. This is a common capacity planning failure in DR testing, where the alternate site is sized for minimal operations but not for the full production load.

Maximum Tolerable Downtime (MTD) is the total time a process can be disrupted without causing significant business damage.

Availability = MTBF/(MTBF+MTTR). 0.9999 = 720/(720+MTTR) => MTTR = 720/0.9999 - 720 = 0.072 hours ≈ 4.32 minutes.

The Recovery Point Objective (RPO) is a key metric defined in a Business Impact Analysis (BIA) because it specifies the maximum acceptable amount of data loss measured in time, guiding the frequency of backups and replication. In a financial services company, RPO directly determines how much transactional data could be lost during a disruption, which is critical for regulatory compliance and data integrity.

SAM helps ensure compliance with software licenses and avoid penalties.

If the backup media are stored offsite without a local copy, the time to retrieve and restore may exceed the RTO.

The current solution has a 12-hour RPO (nightly backups), but the business requires an RPO of 15 minutes. This means up to 11 hours and 45 minutes of transaction data could be lost, far exceeding the acceptable data loss threshold. While the recovery time of 4 hours also exceeds the MTD of 2 hours, the most critical risk is data loss because the gap between the actual RPO and the required RPO is proportionally larger and directly impacts transaction integrity and financial reconciliation.

Standard changes are pre-approved, low-risk, and follow a defined procedure, often requiring only a CAB notification.

BIA identifies critical processes, dependencies, and recovery requirements.

A known error database (KEDB) is used to store known errors and workarounds to expedite incident resolution.

Regression testing ensures that code changes do not introduce new defects into existing functionality. Skipping regression testing for minor changes is a control weakness because even small modifications can have unintended side effects in a financial application where accuracy and reliability are critical. Without regression testing, the organization risks undetected errors that could lead to financial misstatements or system instability.

A warm site has partially configured infrastructure (e.g., servers, network) but requires additional setup, such as loading data and applications, before full operation.

The primary risk of using unsupported software versions is the absence of vendor-provided security patches. Without these patches, known vulnerabilities remain unaddressed, exposing the organization to exploitation, data breaches, and system compromise. This directly impacts the confidentiality, integrity, and availability of information assets.

If the restore takes longer than the RTO, the backup and recovery process does not meet the required timeline. This could be due to inadequate infrastructure or testing.

A right-to-audit clause allows the organization to review the vendor's processes and controls, ensuring compliance with contractual and regulatory requirements.

People procedures, alternate facilities, and data/technology recovery are core to BC.

The incompatibility suggests that the hot site was not properly configured to mirror production, possibly due to lack of change synchronization or testing.

A full backup contains all data and requires only one restore operation, making it faster than restoring from incremental or differential backups.

Release planning defines the scope and schedule; testing ensures the release meets quality standards. Deployment is part of release, but planning and testing are foundational.

The primary control weakness is the lack of automated escalation and tracking for incident reassignments. Without automated mechanisms (e.g., workflow triggers, timestamped reassignment logs, or integration with IT service management tools), the service desk can reassign P2 incidents to second-level support without updating the incident record, leading to untracked delays. This directly violates the SLA of 8 hours, as the average resolution time of 10 hours indicates that incidents are not being monitored or escalated properly, causing them to exceed the target.

Standard format commands do not securely erase data; data can still be recovered. Secure sanitization methods (e.g., degaussing, shredding) should be used.

A walkthrough test involves reviewing the plan step by step in a meeting, with no actual failover or impact on production, making it low-risk.

The Recovery Time Objective (RTO) defines the maximum acceptable downtime for a system after a disaster. Since the organization's RTO is 4 hours and the system was recovered in 3.5 hours, the recovery time directly satisfies the RTO metric. The 30 minutes of data loss is irrelevant to RTO; it pertains to the Recovery Point Objective (RPO).

Tabletop exercises focus on discussion and coordination among participants without technical testing.

P1 incidents are the highest severity, typically involving a critical service outage affecting all users with significant business impact.

A full interruption test (also called full-scale test) involves actual failover, shutting down primary operations and running completely from the alternate site.

The auditor's first step must be to verify whether the change was correctly classified as a standard change, because standard changes are pre-approved and do not require a CAB meeting. If the classification is correct, the process was followed; if not, the lack of CAB approval is a control failure. This aligns with ITIL best practices, where standard changes are low-risk, pre-authorized changes with a defined procedure, and the auditor must confirm the classification before escalating or recommending action.

Dependency management ensures jobs run in the correct sequence based on prerequisites, reducing errors and manual intervention.