N10-009 Exam Dumps - CompTIA Network+ Certification Exam

An SLA (Service Level Agreement) defines performance expectations, including response time, prioritization, and resolution time for services and support issues. It helps the technician determine which task has higher priority based on business impact.

A. NDA (Non-Disclosure Agreement) relates to confidentiality, not task prioritization.

B. AUP (Acceptable Use Policy) defines user behavior, not issue handling.

D. MOU (Memorandum of Understanding) outlines informal agreements and doesn't define ticket priorities.

📘 Reference:

CompTIA Network+ N10-009 Official Objectives: 4.1 – Compare and contrast common documentation types.

A captive portal is a web page that users must view and interact with before being granted access to a network. It is commonly used in guest networks to enforce terms of use agreements. When a user connects to the network, they are redirected to this portal where they must accept the terms of use before proceeding. This method ensures that users are aware of and agree to the network's policies, making it the best choice for this scenario. References: CompTIA Network+ Exam Objectives and official study guides.

Packet loss occurs when network packets fail to reach their destination, leading to disruptions in connectivity and performance issues. In this scenario:

Users report connectivity issues and lag during video meetings.

The administrator detects increased retransmissions in tcpdump, which is a strong indicator of lost packets that must be resent.

Video meetings are particularly sensitive to packet loss, leading to buffering, frozen screens, and dropped calls.

Latency (Option A) refers to delayed data transmission but does not necessarily cause retransmissions.

Bottlenecking (Option C) happens when a network component (e.g., router, switch) cannot handle the traffic load, but packet retransmissions are more directly related to packet loss.

Jitter (Option D) affects the consistency of packet arrival times, but the symptoms described here are more aligned with packet loss rather than timing variations.

? Reference: CompTIA Network+ (N10-009) Official Study Guide – Section: Troubleshooting Connectivity Issues

A warm site typically has a full infrastructure ready, but it lacks the most up-to-date data or is not immediately operational. It requires some configuration or data restoration to become fully functional.

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Increasing the MTU (Maximum Transmission Unit) size allows larger frames to be transmitted, reducing overhead and improving throughput — especially for large file transfers like backups.

A. QoS prioritizes traffic but doesn’t reduce backup times directly.

B. SDN is a network management model, not a parameter change.

D. VXLAN encapsulates VLANs, not relevant to backup speeds.

E. TTL is for packet lifetime, not throughput.

References (CompTIA Network+ N10-009):

Domain: Network Infrastructure — MTU, jumbo frames, performance tuning.

•Cold sites are the most cost-effective disaster recovery (DR) option since they require the least infrastructure investment. They provide space and power but no pre-configured systems.

•Hot sites (A) are fully operational and very expensive.

•Warm sites (D) offer some pre-configured hardware but still require setup, making them more costly than cold sites.

•Clusters (C) are active failover systems, not DR sites.

📖Reference: CompTIA Network+ N10-009 Official Documentation – Disaster Recovery & Business Continuity Planning.

UDP (User Datagram Protocol) is a connectionless protocol that does not provide built-in mechanisms for error detection, retransmission, or acknowledgments. If a UDP packet is lost in transit, the protocol itself does not handle retransmission. However, some applications using UDP (e.g., TFTP or custom streaming protocols) may implement their own mechanisms to detect packet loss and request retransmission if needed.

Why not A? The data link layer (Layer 2) handles frame-level errors within a single network segment, not end-to-end packet loss across networks.

Why not B? The IP TTL (Time to Live) field prevents routing loops by decrementing with each hop, but IP does not handle retransmission.

Why not C? UDP does not use acknowledgments, so the sender does not expect or receive them.