CompTIA Network+ Practice Test for Subdomain 3.3 #02

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Today’s practice test is based on Subdomain 3.3 (Explain disaster recovery (DR) concepts) from the CompTIA Network+ N10-009 objectives.

This beginner-level practice test is inspired by the CompTIA Network+ (N10-009) exam and is designed to help you reinforce key networking concepts on a daily basis.

These questions are not official exam questions, nor are they brain dumps, but they reflect topics and scenarios relevant to the Network+ certification. Use them to test your knowledge, identify areas for improvement, and build daily cybersecurity habits.

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CompTIA Network+ Practice Test for Subdomain 3.3 #02

10 questions • Single best answer

Question 1

A systems engineer at a regional credit union is documenting the disaster recovery plan for the core banking network. Management needs to know the maximum amount of data the organization can afford to lose in the event of a failure. The engineer identifies that transaction logs are replicated to the DR site every four hours. Which DR metric defines this acceptable data loss threshold?

A. Recovery Time Objective (RTO), which defines the maximum elapsed time before systems must be restored to operation after a failure B. Mean Time Between Failures (MTBF), which represents the average operational time expected between system failures C. Recovery Point Objective (RPO), which defines the maximum acceptable amount of data loss measured in time D. Mean Time to Repair (MTTR), which defines the average time required to restore a failed component to operation

Question 2

A network architect is evaluating DR site options for a manufacturing company's ERP system. The chosen site must allow the organization to restore full operations within two hours of a disaster declaration. The site currently has dedicated hardware and network connectivity that mirrors the production environment, and all critical data is continuously replicated in real time. Which DR site classification best describes this environment?

A. Cold site, which provides the physical space and power but requires procurement and installation of hardware before recovery can begin B. Warm site, which has some pre-installed hardware and periodic data backups but requires additional configuration time before going live C. Hot site, which maintains a fully operational duplicate of the production environment with real-time data replication enabling near-immediate failover D. Tabletop site, which simulates a DR scenario using discussion exercises rather than physical infrastructure for failover

Question 3

A network operations manager is reviewing DR metrics for a hospital's network infrastructure. The most recent failure data shows that a core switch failed after 4,380 hours of operation and took 12 hours to replace and restore to full function. The manager needs to calculate both the reliability and the repairability of the switch. Which pair of metrics correctly describes these two measurements?

A. RPO of 4,380 hours and RTO of 12 hours B. MTBF of 4,380 hours and MTTR of 12 hours C. MTTR of 4,380 hours and MTBF of 12 hours D. RTO of 4,380 hours and RPO of 12 hours

Question 4

A disaster recovery planner at a logistics company is designing the DR strategy for the organization's order management system. The system must be recoverable within six hours of any declared disaster, and the business can tolerate losing no more than one hour of order data. Which statement correctly maps these business requirements to their corresponding DR metrics?

A. The six-hour recovery window represents the RPO, and the one-hour data loss tolerance represents the RTO B. The six-hour recovery window represents the RTO, and the one-hour data loss tolerance represents the RPO C. Both the six-hour and one-hour requirements are components of the MTTR, which defines the combined recovery and data restoration window D. The six-hour recovery window represents the MTBF, and the one-hour data loss tolerance represents the MTTR

Question 5

A network team at a financial services firm conducts an annual DR exercise where senior managers, network engineers, and business stakeholders gather in a conference room to verbally walk through their response to a simulated ransomware attack that has taken down the primary data center. No actual failover is performed, and no systems are affected. Which type of DR test is being conducted?

A. Validation test, which verifies that backup media is readable and that restore procedures produce a functional system state B. Failover test, which redirects live production traffic to the DR site to confirm that all services operate correctly under real conditions C. Tabletop exercise, which simulates a disaster scenario through structured discussion to evaluate response procedures and team coordination without activating actual recovery systems D. Parallel test, which brings up DR systems alongside production to compare output and confirm data integrity before cutting over

Question 6

An infrastructure manager is selecting a DR site for a healthcare organization. The organization cannot afford the cost of a hot site but needs to restore operations within 24 hours. The selected site has rack space, power, cooling, and pre-installed servers and network equipment, but data must be restored from backups shipped or transferred at the time of a disaster. Which DR site type does this describe?

A. Hot site, because the physical infrastructure is pre-installed and immediately available for failover B. Warm site, because the facility has hardware and infrastructure in place but requires data restoration and additional configuration before operations can resume C. Cold site, because no equipment has been pre-staged and the facility provides only floor space and utilities D. Colocation site, because the organization is renting shared data center space from a third-party provider

Question 7

A network engineer at a media company is presenting DR concepts to the executive team. An executive asks why the company maintains different RPO and RTO values for different systems -- for example, the live broadcast platform has an RPO of 15 minutes and an RTO of 30 minutes, while the internal HR system has an RPO of 24 hours and an RTO of 72 hours. What is the primary reason different systems have different RPO and RTO values?

A. RPO and RTO values are standardized by industry regulation and must match the compliance tier assigned to each system category B. Different systems have different business criticality, revenue impact, and data change rates, so acceptable data loss and recovery time vary based on the cost of downtime for each system C. RPO must always be shorter than RTO, so higher-tier systems are assigned lower numbers to satisfy this mathematical requirement D. RPO and RTO values are determined exclusively by the DR site type chosen, with hot sites assigned the shortest values and cold sites assigned the longest

Question 8

A disaster recovery team at a university is reviewing its DR plan after an unplanned outage lasted far longer than the documented RTO for the student registration system. During the post-incident review, the team discovers that the recovery runbook had never been tested, several documented steps referenced servers that had been decommissioned, and the team was unsure of the escalation chain. Which type of DR testing would have been most effective at identifying these procedural gaps before the actual outage occurred?

A. Increasing the frequency of full data backups to reduce the RPO and ensure more current data is available at recovery time B. Replacing the warm DR site with a hot site to eliminate the need for manual recovery steps and reduce potential RTO exceedances C. Conducting tabletop exercises and validation tests to walk through the recovery runbook, identify stale steps, and confirm the escalation chain D. Deploying additional network monitoring agents on the student registration servers to provide earlier failure detection and faster alerting

Question 9

A network administrator is explaining the difference between active-active and active-passive high-availability configurations to a new team member. The administrator describes a configuration in which two routers both handle production traffic simultaneously, and if one fails, the surviving router absorbs all traffic automatically without a failover transition period. Which high-availability model is being described?

A. Active-passive, in which one device handles all production traffic while the second remains idle in standby, taking over only when the primary fails B. Active-active, in which both devices simultaneously process production traffic and each can absorb the full load if the other fails C. Cold standby, in which the secondary device is powered off and must be manually started and configured before it can handle traffic D. Load balancing only, in which traffic is distributed across both devices strictly to increase throughput without any failover capability

Question 10

A senior network engineer is explaining to a junior colleague why an organization should invest in a DR strategy that achieves a very short RPO for its e-commerce platform. The engineer explains that unlike an internal HR system that changes infrequently, the e-commerce platform processes hundreds of orders per minute and the financial and reputational impact of losing that data is severe. Which concept directly determines how frequently backups or replication must occur to satisfy the stated RPO?

A. The MTBF of the database servers, which indicates how often hardware failures occur and therefore how often recovery would be needed B. The RTO for the e-commerce platform, which defines the time budget for restoration and indirectly sets the minimum backup frequency C. The RPO value itself, because the backup or replication interval must be equal to or shorter than the RPO to ensure that no more data than acceptable is lost in any failure scenario D. The DR site type, because hot sites automatically enforce backup intervals that match the organization's RPO requirements without additional configuration

CompTIA Network+ Practice Test for Subdomain 3.3 #02

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