CompTIA N10-009 Exam Dumps

The correct solution is a Data Center Interconnect (DCI). DCIs extend Layer 2 networks across geographically dispersed data centers, enabling seamless replication of services such as SAN storage, backup synchronization, or VM migrations. This ensures workloads and data can move between sites while maintaining the same VLANs and addressing.

A . Security Service Edge (SSE) provides cloud-delivered security functions like secure web gateways and CASB, not Layer 2 extension.

C . Infrastructure as code (IaC) automates deployment and management of network infrastructure but is unrelated to extending Layer 2 domains.

D . Zero Trust architecture is a security framework ensuring strict access control but doesn't address network connectivity between sites.

In scenarios where backups need replication between sites, Layer 2 extension is often required so systems can communicate as if they are in the same broadcast domain. DCI is specifically designed to provide this functionality reliably and securely.

Domain: Network Infrastructure --- WAN technologies, data center interconnect, backup replication.

If a workstation can access the internet and printers (likely in another VLAN) but not internal servers, the port was likely placed into the wrong VLAN after the move. VLAN assignment controls Layer 2 segmentation, restricting access to resources on different VLANs.

A . A wrong default gateway would prevent internet access.

C . An error-disabled port would block all connectivity.

D . A duplicate IP would cause general network issues, not just missing server access.

Reference (CompTIA Network+ N10-009):

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.''

Verifying full system functionality occurs after implementing a fix. This step ensures the solution resolved the issue and that performance is back to expected levels. Comparing current throughput to baseline measurements is part of validation testing to confirm everything is within normal operational parameters.

A . Implement the solution applies the fix but does not confirm results.

C . Document findings happens at the end of troubleshooting.

D . Test the theory comes earlier, when trying to confirm the suspected cause.

Reference (CompTIA Network+ N10-009):

Domain: Network Troubleshooting --- Troubleshooting methodology steps, baselines, verification testing.