Newly Released CompTIA N10-009 Exam PDF

To validate routing between networks hosting Workstation A and File Server 2, follow these steps:

Review Routing Tables:

Check the routing tables of Router A, Router B, and Router C to identify any missing routes.

Identify Missing Routes:

Ensure that each router has routes to the networks on which Workstation A and File Server 2 are located.

Add Static Routes:

If a route is missing, add a static route to the relevant destination network via the correct interface.

Routing Table:

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

S* 0.0.0.0/0 is directly connected, GigabitEthernet3

10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks

C 10.0.4.0/22 is directly connected, GigabitEthernet2

C 10.0.6.0/24 is directly connected, GigabitEthernet2

L 10.0.6.1/32 is directly connected, GigabitEthernet2

172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks

C 172.16.27.0/30 is directly connected, GigabitEthernet3

L 172.16.27.1/32 is directly connected, GigabitEthernet3

Routing Table:

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

S* 0.0.0.0/0 is directly connected, GigabitEthernet1

10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks

C 10.0.0.0/22 is directly connected, GigabitEthernet1

L 10.0.0.1/32 is directly connected, GigabitEthernet1

172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks

C 172.16.27.4/30 is directly connected, GigabitEthernet1

L 172.16.27.5/32 is directly connected, GigabitEthernet1

Routing Table:

10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks

S 10.0.0.0/22 [1/0] via GigabitEthernet1

S 10.0.4.0/22 [1/0] via GigabitEthernet2

172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks

C 172.16.27.0/30 is directly connected, GigabitEthernet2

L 172.16.27.2/32 is directly connected, GigabitEthernet2

C 172.16.27.4/30 is directly connected, GigabitEthernet1

L 172.16.27.6/32 is directly connected, GigabitEthernet1

Install Static Route to 10.0.0.0/22 via 172.16.27.1 (assuming Router C ' s IP is 172.16.27.1):

Destination Prefix: 10.0.0.0

Destination Prefix Mask: 255.255.252.0

Interface: GigabitEthernet3

Install Static Route to 10.0.4.0/22 via 172.16.27.5 (assuming Router C ' s IP is 172.16.27.5):

Destination Prefix: 10.0.4.0

Destination Prefix Mask: 255.255.252.0

Interface: GigabitEthernet1

Install Static Route to 10.0.6.0/24 via 172.16.27.2 (assuming Router A ' s IP is 172.16.27.2):

Destination Prefix: 10.0.6.0

Destination Prefix Mask: 255.255.255.0

Interface: GigabitEthernet2

Install Static Route to 10.0.0.0/22 via 172.16.27.1 (assuming Router B ' s IP is 172.16.27.1):

Destination Prefix: 10.0.0.0

Destination Prefix Mask: 255.255.252.0

Interface: GigabitEthernet1

Summary of Static Routes:

Router A:

ip route 10.0.0.0 255.255.252.0 GigabitEthernet3

Router B:

ip route 10.0.4.0 255.255.252.0 GigabitEthernet1

Router C:

ip route 10.0.6.0 255.255.255.0 GigabitEthernet2

ip route 10.0.0.0 255.255.252.0 GigabitEthernet1

These configurations ensure that each router knows the correct paths to reach Workstation A and File Server 2, resolving the connectivity issue.

The correct answer is B. traceroute. Traceroute is a diagnostic command used to track the path that packets take from a source device to a destination across an IP network. It identifies each hop (router or intermediary device) along the route and measures the time it takes for packets to travel between them. This makes it particularly useful for determining where communication is failing or being restricted.

In this scenario, the administrator suspects that other network devices may be restricting traffic, such as routers, firewalls, or access control devices. Traceroute helps pinpoint exactly where packets stop or experience delays, indicating a potential filtering or blocking point in the network path.

The other options are less appropriate. ipconfig is used to view or manage a device’s local IP configuration and does not test packet flow across the network. Nmap is a scanning tool used to identify open ports and services, not to trace packet paths. Ping verifies basic connectivity but does not provide insight into intermediate devices or where traffic may be blocked.

According to CompTIA Network+ objectives, traceroute is the best tool for identifying routing issues and determining whether network devices are restricting traffic.

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.

References (CompTIA Network+ N10-009):

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

An IDS (Intrusion Detection System) is deployed out-of-band, meaning it passively monitors network traffic using a SPAN/mirror port or network tap. It detects and analyzes suspicious traffic without introducing latency since it does not sit in-line.

A. IPS (Intrusion Prevention System) is in-line and can block traffic but may add latency.

C. Load balancer distributes traffic across servers for performance and redundancy, not for threat detection.

D. Firewall filters traffic at the perimeter or internally; it can affect latency but does not provide the same in-depth attack analysis.

References (CompTIA Network+ N10-009):

Domain: Network Security — IDS vs. IPS, in-band vs. out-of-band monitoring, passive detection methods.