CompTIA Updated N10-009 Exam Questions and Answers by asiya

Comprehensive and Detailed Explanation:

BYOD (Bring Your Own Device)policies define rules forusing personal deviceson the company network. Since the new employee is using apersonal laptop, this policy applies.

Breakdown of Options:

A. IAM (Identity and Access Management)– Governsuser permissions,not device policies.

B. BYOD (Bring Your Own Device)–✅Correct answer.Coversusing personal devicesfor work.

C. DLP (Data Loss Prevention)– Focuses onpreventing sensitive data leaks,not device usage policies.

D. AUP (Acceptable Use Policy)– Coversinternet and system usage, butnot personal device rules.

Understanding MTBF:

Mean Time Between Failures (MTBF): A reliability metric that estimates the average time between successive failures of a device or system.

Calculation and Importance:

Calculation: MTBF is calculated as the total operational time divided by the number of failures during that period.

Usage: Used by manufacturers and engineers to predict the lifespan and reliability of a device, helping in maintenance planning and lifecycle management.

Comparison with Other Metrics:

RTO (Recovery Time Objective): The maximum acceptable time to restore a system after a failure.

RPO (Recovery Point Objective): The maximum acceptable amount of data loss measured in time.

MTTR (Mean Time to Repair): The average time required to repair a device or system and return it to operational status.

Application:

MTBF is crucial for planning maintenance schedules, spare parts inventory, and improving the overall reliability of systems.

RTO stands forRecovery Time Objective, which defines the maximum acceptable amount of time that a system, application, or function can be down after a failure or disaster. It helps prioritizewhich systems need to be recovered firstbased on their importance to business operations.

SLA (Service Level Agreement)refers to an agreement between a service provider and a customer regarding expected performance and availability, but it does not dictate recovery order.

MTBF (Mean Time Between Failures)is a measure of reliability and time between hardware or system failures.

SIEM (Security Information and Event Management)is a centralized tool for logging and alerting but not relevant to DR recovery prioritization.

????Reference:

CompTIA Network+ N10-009 Official Objectives: 4.4 – Summarize business continuity and disaster recovery concepts.

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Disabling unused ports prevents unauthorized access and reduces the attack surface by ensuring that no inactive or unmonitored entry points are available for exploitation. Changing default passwords is critical for security because default credentials are widely known and can easily be exploited by attackers. These techniques are fundamental steps in hardening devices against unauthorized access and ensuring network security. References: CompTIA Network+ Exam Objectives and official study guides.