CCNA Is Operations Resilience Questions

The immediate issue preventing the organization from meeting its RPO of 1 hour is the saturated replication link, which causes replication lag of up to 3 hours. Upgrading the link to a higher bandwidth connection directly addresses the bottleneck, reducing replication time and enabling the RPO to be met. Other options, while potentially beneficial, do not resolve the primary cause of the RPO failure.

Option D is correct because inadequate change management procedures fail to ensure that updates are replicated to the hot site. Options A, B, and C are less likely.

Option B is correct because 'The device is not ready' indicates the backup media is not available. Option A would give a different error; C typically shows license; D shows network.

Options B and E are correct. Capacity management aims to ensure that current and future business requirements are met cost-effectively. Option A is about financial management; Option C is performance monitoring but not the primary objective; Option D is procurement.

Option A is correct because the data change rate of 50 GB per hour (~112 Mbps sustained) exceeds the 100 Mbps bandwidth, causing replication lag that may exceed the RPO. Option B is less direct; C is a concern but not primary; D is the same as A.

Clearly defined roles and responsibilities (C) are essential because they ensure that during a security incident, every team member knows their specific tasks, such as who leads the investigation, who communicates with stakeholders, and who executes containment actions. Without this clarity, response efforts become chaotic, leading to delays and missed containment windows, which directly impacts the organization's ability to minimize damage and recover quickly.

Option A is correct because without review, emergency changes may introduce security vulnerabilities or instability that go unnoticed. Option B is a lesser risk; Option C is a consequence but not the most significant; Option D is operational risk but less critical than security.

Insufficient storage on the standby server delays data restoration, directly impacting RTO. Other options are good practices that would not cause failure.

Correct answers are A, B, and D: redundant hardware, regular data backups, and insurance policies. C and E are not resilience techniques; C is a risk analysis step, E is training which is supportive but not a core resilience technique.

Option A is correct because the primary purpose of a DRP is to restore IT systems and operations after a disaster. The plan must include step-by-step recovery procedures for critical systems, applications, and data to ensure business continuity. Without these steps, the DRP cannot guide the recovery team through the technical restoration process.

Option D is correct because without regular testing, the hot site may not function as expected. Options A, B, and C are important but secondary: A is part of planning, B is operational, C is compliance but not the most critical for effectiveness.

Online backup with transaction log backups (Option C) is correct because it allows the database to remain fully operational (24/7 availability) while capturing every committed transaction in the transaction log. In the event of a failure, you can restore the most recent full backup and then apply all subsequent transaction log backups to recover to the exact point of failure, minimizing data loss to only uncommitted transactions.

A vulnerability management program ensures systematic identification and remediation of missing patches, addressing the root cause. Immediate patching and isolation are tactical; renewing the contract is necessary but not a process improvement.

RTO defines the maximum acceptable downtime; it is the foundational metric for recovery planning. RPO, MTTR, and SLA are defined later or are contractual.

Immutable backup storage ensures backups cannot be altered or deleted, preventing corruption from ransomware. Encryption protects confidentiality, not integrity; logging detects but does not prevent; restoration testing detects corruption after the fact.

Option D is correct because regular disaster recovery testing that includes a full failover is the only control that directly validates that the DR site's SAN zoning is correctly configured to accept replicated data. Without such testing, misconfigurations like incorrect zone sets or missing WWPN (World Wide Port Name) mappings in the SAN fabric remain undetected until an actual failover is attempted. This aligns with the CISA emphasis on testing recovery procedures to ensure business continuity.

Option C is correct because restoring the full backup and applying transaction logs up to the deletion point recovers all data except the very last transactions. Option A is incomplete; B loses 24 hours; D is not applicable.

Option C is correct because a decreasing number of recurring incidents indicates that root causes are being identified and resolved. Option A is about recovery time, not effectiveness; Option B is about volume, which could increase; Option D is reactive, not proactive effectiveness.

Mean time to repair (MTTR) measures the average time taken to restore a failed IT service or component, directly reflecting operational efficiency and incident response effectiveness. It is a standard KPI for IT operations because it quantifies the speed of recovery, which is critical for minimizing downtime and maintaining service levels.

Option B is correct because the backup policy shows a retention period of only 30 days, which is insufficient to meet common regulatory requirements such as GDPR, HIPAA, or SOX that often mandate retention of critical data for months or years. Without adequate retention, the organization risks non-compliance, legal penalties, and inability to produce historical records during audits or litigation.

Option D is correct because the delay in notifying the incident response team (from 14:25 to 16:00) is the most significant failure, as it allowed unauthorized access to continue. Option A is not a failure (alert timely); B is a factor but not the primary; C is secondary.

BIA steps: identify processes, define recovery objectives, assess impact, prioritize, and document.

Encryption protects data confidentiality even if physical security is breached. Physical locks, access controls, and offsite storage are important but do not protect against all threats like theft during transit.

Option B is correct because a risk assessment is needed to prioritize which updates are critical. Option A is premature without understanding current risks; C is part of the update process but should follow risk assessment; D is later in the process.

A BCP must define who is responsible, how to activate the plan, and the risks it addresses. Network diagrams and vendor contracts are supporting documents but not key components of the plan itself.

The first rule denies all IP traffic from 10.0.1.0/24 to any destination; this rule takes precedence. The second rule blocks only HTTPS from any source, but the first rule already blocks all traffic from that subnet. The permit rule is for a different subnet.

The RPO of 1 hour means the organization can tolerate losing at most 1 hour of data. With the last full backup 48 hours old and incremental backups for the past 24 hours corrupted, the usable recovery point is at least 24 hours old, resulting in data loss far exceeding the 1-hour RPO. This gap between actual and acceptable data loss is the most immediate concern because it directly violates the business continuity requirement.

Synchronous replication over long distance introduces latency that degrades primary performance. Changing to asynchronous replication with continuous data protection (CDP) can meet the 15-minute RPO without impacting the primary site. Upgrading bandwidth does not reduce latency; backup-to-disk with hourly logs may not meet RPO due to potential data loss; reducing RPO changes the business requirement unacceptably.

Options A, C, and D are correct. BYOD introduces security risks (A), support complexity (C), and data leakage (D). Option B is an advantage, not a challenge; Option E is less common as a challenge compared to the others.

Emergency changes bypass normal controls; failure to review them within a reasonable time (e.g., 30 days) increases risk of undocumented changes. Logging in spreadsheet, pre-approved standard changes, and defined change windows are acceptable or even good practices.

Testing techniques assess different aspects.

Option C is correct because BIA identifies critical processes and determines the maximum allowable downtime (RTO) and data loss (RPO). Options A, B, and D are subsequent steps after the BIA.

Incremental backups with transaction log backups every 15 minutes meets the 15-minute RPO by capturing all changes since the last full or incremental backup, while transaction log backups record every individual database transaction. This method minimizes storage by only backing up changes and reduces performance impact compared to continuous replication, as log backups are lightweight and can be scheduled without constant I/O overhead.

Patch management starts with inventory, then evaluation, testing, deployment, and verification.

A configuration management database (CMDB) tracks software versions, and a patch management process ensures compatibility. Cloud backups, backup frequency, and IDS do not address version compatibility.

Option A is correct because implementing load balancing distributes the workload across multiple servers, addressing the performance issue. Options B, C, and D are not the best; B is hasty, C helps but is not best, D does not fix the problem.

Regular restoration tests verify that backups are recoverable, and offsite storage ensures availability after a site disaster. Encryption, labeling, and capacity are security or operational considerations but not essential for recoverability.

Option C is correct because offsite storage ensures data availability in case of a site disaster. Options A, B, and D are secondary or incorrect.

The error indicates failure to mount the backup target, implying a connectivity issue with the storage array. A syntax error would produce a script error; disk space would show a different error; authentication would show a credentials error.

Option D is correct because the error indicates that the backup server cannot access the virtual disk, which is typically a LUN masking or zoning issue. Option A is plausible but the message specifically points to storage access; Option B is not indicated; Option C is possible but less direct.

The primary purpose of a business impact analysis (BIA) is to identify critical business processes and quantify the impact of their disruption, which directly drives the recovery time objectives (RTOs) and recovery point objectives (RPOs). These RTOs and RPOs form the foundation for selecting appropriate recovery strategies and technologies, such as synchronous replication for near-zero RPO or warm standby sites for specific RTO windows. Without a BIA, the BCP would lack the business-driven metrics needed to prioritize recovery efforts and allocate resources effectively.

The error message indicates that the backup destination path \BACKUPSRV\DBBackups\DB01\ is inaccessible. This is most commonly caused by the network share being offline, unreachable due to network issues, or the target server being down. Without connectivity to the UNC path, the backup job cannot proceed, even if permissions and disk space are adequate.

Memory leaks cause gradual memory consumption; sustained high memory usage directly indicates the condition. CPU spikes, disk latency, and packet loss are less specific to memory leaks.

Option A is correct because freeing up space on the backup storage device by removing old backup sets immediately resolves the insufficient storage issue that caused the incremental backup job to fail. This is a direct, short-term fix that reclaims capacity without altering backup schedules or configurations.

Option A is correct because checking the status of the CRM service provider helps determine if it is a known outage. Option B is premature; Option C is device-specific; Option D is a later step.

Immutable backups prevent modification or deletion by ransomware, even if the backup software or administrative credentials are compromised. Storing them offsite or in an air-gapped environment ensures that a simultaneous physical or logical attack cannot destroy both primary and secondary data, directly addressing the root cause of the three-week recovery delay.

Option D is correct because both companies may be affected by the same regional disaster. Options A, B, and C are valid concerns but secondary.

Option B is correct because incremental backups after a full backup minimize data loss and allow frequent backups with low storage overhead, meeting the 15-minute RPO. Option A does not meet RPO; Option C uses too much storage; Option D is for file-level, not databases.

The correct answer is B because the incident revealed failures in DNS failover scripts (causing RTO breach) and database consistency checks (causing RPO breach). A full-scale test that includes DNS failover and database consistency validation is the only option that directly addresses both root causes, ensuring the DR plan meets the stated RTO of 2 hours and RPO of 15 minutes. Without such a test, the organization cannot verify that the failover process and data integrity mechanisms work as intended under realistic conditions.

Option A is correct because additional training addresses the human factors causing delays. Option B lowers the standard; C is punitive; D might help but is not the best first step.

Option B is correct because a logon type 10 (Remote Interactive) from an unknown IP (192.168.10.50) using NTLM could indicate an unauthorized remote desktop session, especially if the employee is not on shift or the IP is unfamiliar. Option A is a normal network logon; Option C is not an event; Option D is not logged here.

Option A is correct because operational audit focuses on efficiency and effectiveness. Options B, C, and D are objectives of other types of audits.

Options B and D are correct. A clear escalation path ensures proper reporting and decision-making; predefined communication templates speed up notification. Option A is not essential; Option C is part of strategy but not directly incident response; Option E is after-action, not during.

Option D is correct because a primary objective of a BCP is to ensure that the organization can continue to meet legal and regulatory obligations during a disruption. This includes maintaining required data protection, reporting, and operational standards as mandated by regulations such as GDPR, HIPAA, or SOX, even when normal operations are impaired.

Option B is correct because a shared account obscures individual accountability, making it impossible to determine who performed specific actions. Option A is a general risk but less specific; Option C is not the primary risk; Option D is the opposite.

Recovery site types differ in readiness and cost.

The core issue is that backup tapes contain sensitive data and are stored in an uncontrolled environment. Encrypting the tapes before transport ensures that even if the physical security of the offsite facility is compromised, the data remains confidential. This directly addresses the risk of unauthorized access to the data, which is the primary concern, and is a cost-effective, immediate control that does not disrupt operations.

Option B is correct because the latency (18 minutes) exceeds the log shipping interval (15 minutes), indicating that the secondary server is falling behind. Option A is not a finding; Option C is not indicated; Option D is about alerting but latency is the core issue.

Option C (contact information for stakeholders) and Option E (procedures for manual operations) are essential BCP elements. Option A and B are more aligned with IT disaster recovery, and Option D is an asset inventory detail, not a critical BCP element.

Human error is significantly higher under stress, which can cause delays and mistakes. Other options are not primary risks.

Option D is correct because if the backups are stored at the same site, a disaster destroying the primary site would also destroy the backups, making recovery impossible. Options A, B, and C are less critical: A is a procedural issue, B is a minor gap, C is about recovery method but not as fundamental as off-site storage.

Option A is correct because the amount of data lost (actual vs. RPO) directly measures whether the recovery process met the Recovery Point Objective. This metric validates the effectiveness of backup frequency and replication lag, which is critical for determining if the DR plan preserved data integrity within acceptable loss limits.

Synchronous replication with write-back caching provides near-zero data loss while managing performance impact. Asynchronous replication may have higher latency, daily backups exceed RPO, and hourly snapshots are insufficient.

HSRP requires that both routers participating in the same virtual IP address use the same group number to form a single HSRP group. If the group numbers on the two interfaces do not match, each router will form its own separate HSRP group, and neither will recognize the other as a peer. Consequently, when the primary router fails, the DR router does not assume the active role because it is not part of the same HSRP group.

Option D is correct because without periodic testing, the recovery time may be underestimated. Option A is plausible but not the most likely cause given the time issue; B and C are incorrect because they are not directly related to the restoration time.

Option C is correct because a reciprocal agreement for a shared hot site does not guarantee exclusive access during a disaster. If both organizations declare a disaster simultaneously, the site may become oversubscribed, leading to resource contention and potential failure of the BCP. This directly undermines the recovery capability, making it the most critical finding.