N10-009 Exam Dumps - CompTIA Network+ Questions and Answers

Confidentiality with Data at Rest: Confidentiality is a core principle of data security, ensuring that data stored (at rest) is only accessible to authorized individuals. This protection is achieved through mechanisms such as encryption, access controls, and permissions.

Privileged Access: The statement " Data can be accessed after privileged access is granted " aligns with the confidentiality principle, as it restricts data access to users who have been granted specific permissions or roles. Only those with the appropriate credentials or permissions can access the data.

Incorrect Options:

A. " Data can be accessed by anyone on the administrative network. " This violates the principle of confidentiality by allowing unrestricted access.

B. " Data can be accessed remotely with proper training. " This focuses on remote access rather than restricting access based on privileges.

D. " Data can be accessed after verifying the hash. " This option relates more to data integrity rather than confidentiality.

CompTIA Network+ materials on data security principles, particularly sections on confidentiality and access control mechanisms​​.

Definition of SD-WAN:

Software-Defined Wide Area Network (SD-WAN) is a technology that simplifies the management and operation of a WAN by decoupling the networking hardware from its control mechanism. It allows for centralized management and enhanced security.

Benefits of SD-WAN:

Reduced Provisioning Time: SD-WAN enables quick and easy deployment of new sites with centralized control and automation.

Security: Incorporates advanced security features such as encryption, secure tunneling, and integrated firewalls.

Scalability: Easily scales to accommodate additional sites and bandwidth requirements.

Comparison with Other Technologies:

VXLAN (Virtual Extensible LAN): Primarily used for network virtualization within data centers.

VPN (Virtual Private Network): Provides secure connections but does not offer the centralized management and provisioning efficiency of SD-WAN.

NFV (Network Functions Virtualization): Virtualizes network services but does not specifically address WAN management and provisioning.

Implementation:

SD-WAN solutions are implemented by deploying edge devices at each site and connecting them to a central controller. This allows for dynamic routing, traffic management, and security policy enforcement.

To provide a complete solution for configuring the access layer switches, let ' s proceed with the following steps:

Identify the correct VLANs for each device and port.

Enable necessary ports and disable unused ports.

Configure fault-tolerant connections between the switches.

Port 1 Configuration (Uplink to Core Switch)

Status: Enabled

LACP: Enabled

Speed: 1000

Duplex: Full

VLAN Configuration: Tagged for VLAN60, VLAN90, VLAN120, VLAN150, VLAN220

Port 2 Configuration (Uplink to Core Switch)

Status: Enabled

LACP: Enabled

Speed: 1000

Duplex: Full

VLAN Configuration: Tagged for VLAN60, VLAN90, VLAN120, VLAN150, VLAN220

Port 3 Configuration (Server Connection)

Status: Enabled

LACP: Disabled

Speed: 1000

Duplex: Full

VLAN Configuration: Untagged for VLAN90 (Servers)

Port 4 Configuration (Server Connection)

Status: Enabled

LACP: Disabled

Speed: 1000

Duplex: Full

VLAN Configuration: Untagged for VLAN90 (Servers)

Port 5 Configuration (Wired Users and WLAN)

Status: Enabled

LACP: Enabled

Speed: 1000

Duplex: Full

VLAN Configuration: Tagged for VLAN60, VLAN120, VLAN150

Port 6 Configuration (Wired Users and WLAN)

Status: Enabled

LACP: Enabled

Speed: 1000

Duplex: Full

VLAN Configuration: Tagged for VLAN60, VLAN120, VLAN150

Port 7 Configuration (Voice and Wired Users)

Status: Enabled

LACP: Enabled

Speed: 1000

Duplex: Full

VLAN Configuration: Tagged for VLAN60, VLAN90, VLAN120, VLAN220

Port 8 Configuration (Voice, Printers, and Wired Users)

Status: Enabled

LACP: Enabled

Speed: 1000

Duplex: Full

VLAN Configuration: Tagged for VLAN60, VLAN90, VLAN120, VLAN220

Port 1 Configuration (Unused)

Status: Disabled

LACP: Disabled

Port 2 Configuration (Unused)

Status: Disabled

LACP: Disabled

Port 3 Configuration (Connection to Device)

Status: Enabled

LACP: Disabled

Speed: 1000

Duplex: Full

VLAN Configuration: Untagged for VLAN1 (Default)

Port 4 Configuration (Connection to Device)

Status: Enabled

LACP: Disabled

Speed: 1000

Duplex: Full

VLAN Configuration: Untagged for VLAN1 (Default)

Port 5 Configuration (Connection to Device)

Status: Enabled

LACP: Disabled

Speed: 1000

Duplex: Full

VLAN Configuration: Untagged for VLAN1 (Default)

Port 6 Configuration (Connection to Device)

Status: Enabled

LACP: Disabled

Speed: 1000

Duplex: Full

VLAN Configuration: Untagged for VLAN1 (Default)

Port 7 Configuration (Connection to Device)

Status: Enabled

LACP: Disabled

Speed: 1000

Duplex: Full

VLAN Configuration: Untagged for VLAN1 (Default)

Ports 1 and 2 on Switch 1 are configured as trunk ports with VLAN tagging enabled for all necessary VLANs.

Ports 3 and 4 on Switch 1 are configured for server connections with VLAN 90 untagged.

Ports 5, 6, 7, and 8 on Switch 1 are configured for devices needing access to multiple VLANs.

Unused ports on Switch 3 are disabled.

Ports 3, 4, 5, 6, and 7 on Switch 3 are enabled for default VLAN1.

Core Switch Ports should be configured as needed for uplinks to Switch 1.

Ensure LACP is enabled for redundancy on trunk ports between switches.

By following these configurations, each device will access only its correctly associated network, unused switch ports will be disabled, and fault-tolerant connections will be established between the switches.

NetFlow (and similar flow technologies like IPFIX/sFlow in concept) is used to collect traffic-flow metadata such as source/destination IPs, ports, protocols, interfaces, and byte/packet counts over time. In Network+ (N10-009) operations and monitoring objectives, flow data is ideal for identifying top talkers and top destinations across the network on a given day because it provides summarized, queryable information at scale without capturing every packet payload. An administrator can review reports to determine which destination IPs/hosts consumed the most bandwidth, which applications were most active, and what time ranges saw spikes—perfect for historical analysis.

SNMP is great for polling device counters (interface utilization, errors, CPU) but it does not natively tell you the “top destination” by conversation/flow without additional flow awareness. Packet capture can reveal exact conversations and payloads, but it is heavy, localized, and not efficient for infrastructure-wide daily top-destination reporting. traceroute maps the path to a destination and helps isolate routing/path issues; it does not provide usage statistics. Therefore, NetFlow is the best fit.

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The Network layer (Layer 3 of the OSI model) can utilize the connectionless protocol IP (Internet Protocol) to send data packets independently without establishing a connection. This approach is typical for protocols like IP, which provide best-effort delivery rather than guaranteed delivery. The document explains:

“The OSI Network Layer is responsible for logical addressing and routing, and it can utilize connectionless protocols like IP to send packets without requiring a session setup. This layer does not guarantee packet delivery, relying on higher layers for error detection or correction if needed.”

•The total number of devices = (150 + 10) users × 2 IPs per user = 320 devices

•Class C (D) supports a maximum of 254 hosts (2^8 - 2), which is too small.

•Class B (B) supports 65,534 hosts (2^16 - 2), making it the best choice.

•Why not the other options?

•Class A (C): Supports millions of addresses, which is overkill for 320 devices.

•Class D (A): Used for multicast, not for device addressing.

MTTR (Mean Time to Repair) is the average time it takes to repair a system or service after a failure. It helps in measuring the downtime and planning recovery processes.

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For an internal network using IPv6, the best option listed is OSPFv3, which is the OSPF version designed to support IPv6 routing. In Network+ (N10-009) routing objectives, OSPF is a common interior gateway protocol (IGP) used within an organization (an autonomous system) to exchange routes dynamically and converge efficiently. OSPFv3 maintains the link-state approach of OSPF while adding IPv6 support, making it a strong fit for enterprise internal routing where multiple routers and subnets need dynamic path calculation and fast convergence.

BGP4 and iBGP are associated with BGP, primarily used for inter-domain routing on the internet and between large networks; while BGP can carry IPv6 (via MP-BGP), it is generally not the “best” default choice for a typical internal-only enterprise network unless there is a specific design reason. EIGRP can support IPv6 in some implementations, but Network+ typically emphasizes OSPF/OSPFv3 as the widely adopted, vendor-neutral IGP for IPv6 deployments. Given the options and the “best for this setup” wording, OSPFv3 is the most appropriate answer.

When a hardware device reaches end of life, or EOL, the best practice is to decommission and replace it. EOL devices may no longer receive vendor support, firmware updates, security patches, replacement parts, or compatibility updates. Continuing to use unsupported infrastructure can introduce operational risk, security vulnerabilities, compliance issues, and increased downtime. In network environments, unsupported switches, routers, firewalls, wireless access points, and servers can become weak points in the organization’s infrastructure.

The CompTIA Network+ N10-009 objectives include lifecycle management, documentation, risk management, and operational best practices. Replacing EOL hardware ensures that the network remains supportable, secure, and aligned with vendor recommendations. Purchasing an extended warranty may not be possible once a device is fully EOL, and even extended support does not always include security or feature updates. Selling or donating the device may create data-handling and security concerns if it is not properly sanitized. Using the device for testing and training may be acceptable in isolated labs, but it is not the best practice for production infrastructure. Therefore, replacement and decommissioning is the correct answer.

The correct answer is Full-tunnel because the policy requires all network traffic from remote corporate laptops to pass through the company’s VPN. In a full-tunnel VPN configuration, once the VPN connection is established, all traffic—including internet-bound traffic—is routed through the corporate network before reaching its destination. This ensures centralized monitoring, content filtering, logging, and enforcement of security controls such as IDS/IPS and firewalls.

According to CompTIA Network+ (N10-009) security objectives, full-tunnel VPNs enhance security by preventing users from directly accessing the internet from their local connection, thereby reducing exposure to local network threats (e.g., public Wi-Fi attacks).

A split-tunnel VPN (Option D) allows users to access the internet directly while only sending corporate-bound traffic through the VPN, which does not meet the “all traffic” requirement. A site-to-site tunnel (Option C) connects entire networks rather than individual remote users. A clientless VPN (Option A) typically provides web-based access without a full network tunnel and does not necessarily route all traffic.

Therefore, full-tunnel best matches the policy requirement.

To locate a specific access point (AP), the most reliable identifier to view is the BSSID. In 802.11 networks, the BSSID is the radio interface identifier for the AP (typically the AP radio’s MAC address). Unlike an SSID, which can be shared across many APs in the same wireless network (especially in an enterprise deployment using the same SSID across multiple APs), the BSSID uniquely distinguishes one AP radio from another. This is critical during an 802.11ax (Wi-Fi 6) migration, where multiple APs may broadcast identical SSIDs and operate on the same channels in different areas.

While RSSI is useful for physically walking toward the strongest signal (a technique used in locating RF sources), RSSI alone does not confirm you are tracking the correct AP—only that you are near an RF transmitter. Channel number also does not uniquely identify the AP because multiple APs can share the same channel (and channels may overlap depending on band and width). SSID similarly is not unique. Therefore, viewing the BSSID on the analyzer (or Wi-Fi analyzer mode) allows the administrator to confirm the exact AP being measured and located.

Using Pre-Shared Key (PSK) authentication means that all users share the same Wi-Fi password, making it difficult to identify individual users when security incidents occur.

Migrating to WPA2-Enterprise (or WPA3-Enterprise) replaces PSK authentication with individual user credentials using 802.1X authentication and a RADIUS server. This allows the organization to:

Track and log specific user activity

Enforce per-user authentication policies

Improve network security

Breakdown of Options:

A. Restrict users to the 5GHz frequency – Improves performance but does not enhance user tracking or security.

B. Upgrade to a mesh network – A mesh network improves coverage, not security tracking.

C. Migrate from PSK to Enterprise – ✅ Correct answer. WPA2-Enterprise or WPA3-Enterprise uses individual user authentication, allowing per-user tracking.

D. Implement WPA2 encryption – WPA2 is already widely used; it does not resolve the tracking issue.

An IP Helper (IP Helper Address) allows DHCP requests to pass through routers and reach a DHCP server on another network.

DHCP broadcasts are not forwarded across routers by default, so an IP Helper Address is needed to relay the request.

This is crucial for large networks where a single DHCP server serves multiple subnets.

Option B (Reservation): Ensures a specific IP address is assigned to a MAC address but does not relay DHCP across networks.

Option C (Exclusion): Prevents specific IP addresses from being assigned, but does not help with DHCP relay.

Option D (Scope): Defines the range of IP addresses available for DHCP clients but does not assist in cross-network communication.

? Reference: CompTIA Network+ (N10-009) Official Study Guide – Section: DHCP and IP Addressing

To prioritize traffic and utilize a constrained link more effectively, the engineer should implement QoS (Quality of Service). QoS is a set of mechanisms that classifies and marks traffic (for example, voice, video, business-critical apps) and then applies queuing and scheduling behaviors to ensure important traffic receives preferential treatment during congestion. Network+ objectives commonly connect QoS to supporting real-time applications (VoIP/video) by reducing latency, jitter, and packet loss, while preventing less critical traffic (bulk transfers, updates) from consuming all available bandwidth. Techniques can include traffic classification, DSCP marking, priority queuing, and traffic shaping/policing.

A CDN improves content delivery by caching closer to users, but it doesn’t provide link-level prioritization for all traffic types. A VPN provides secure tunneling/encryption, not prioritization. TTL (Time To Live) is an IP header value used to prevent routing loops by limiting packet lifespan; it does not manage bandwidth or prioritize flows. QoS is the standard solution when the goal is to control how bandwidth is allocated under load and to ensure critical services remain performant.

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GDPR (General Data Protection Regulation)is alegal frameworkenforced by the European Union to protect personal data and privacy. Unlike internal organizational policies such as AUPs or codes of conduct, GDPR is alegislated regulation, and organizations must comply or face legal consequences.