N10-009 Exam Dumps - CompTIA Network+ Certification Exam

EIGRP(Enhanced Interior Gateway Routing Protocol) supports bothIPv4 and IPv6. While OSPFv3 is specific to IPv6 and RIPv2 only supports IPv4, EIGRP was extended to handle dual-stack environments efficiently.

The option that most directly secures sensitive information on the network is data-in-transit encryption. This ensures that data packets are unreadable to attackers who intercept them while moving across the network. Protocols such as TLS, HTTPS, IPsec, and SSH protect confidentiality and integrity of sensitive information.

B. Principle of least privilege (PoLP) secures access control but does not directly protect data in motion.

C. Role-based access control (RBAC) enforces permissions but again does not secure the data while transmitted.

D. Multifactor authentication (MFA) strengthens identity verification but does not directly protect the data itself once transmitted.

Thus, while all options contribute to overall security, encryption of data-in-transit most directly addresses protection of sensitive information on the network.

References (CompTIA Network+ N10-009):

Domain: Network Security — Encryption methods, confidentiality, data-in-transit protection.

In the CompTIA Network+ (N10-009) troubleshooting methodology, the step that follows verifying full system functionality (confirming the issue is resolved and validating with the user/requirements) is documenting findings, actions, and outcomes. Documentation is a required closing step because it captures what the original symptoms were, what troubleshooting steps were performed, what root cause was identified (if found), what remediation was applied, and what validation confirmed success. This record supports operational continuity by enabling faster resolution if the issue recurs, improving knowledge transfer across teams, and meeting organizational change-control or compliance requirements.

The other options fall in different parts of the methodology. Attempting to replicate the problem is typically performed earlier—after identifying symptoms and before or during isolation—to confirm the issue and help narrow scope. Implementing the plan occurs before verification; you implement the selected solution or escalation plan and then test/verify. Escalating the issue occurs when the technician lacks access, expertise, time, or evidence to proceed, and it can happen during troubleshooting—but it is not the standard step that comes after verifying resolution.

•AAAA records map domain names to IPv6 addresses, enabling proper resolution.

•PTR records (A) are for reverse DNS lookups.

•TXT records (B) store text-based information, not IP addresses.

•NS records (D) define authoritative name servers but don’t directly affect IPv6 resolution.

📖Reference: CompTIA Network+ N10-009 Official Documentation – DNS Configuration & IPv6.

An Intrusion Detection System (IDS) monitors and analyzes traffic to detect suspicious activity but does not sit in the traffic path, meaning it doesn’t affect latency. In contrast, an IPS is in-line and can introduce delay.

From Andrew Ramdayal’s guide:

“IDS monitors and alerts on malicious activity but does not block traffic, making it suitable for environments where low latency is critical.”