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

An evil twin attack occurs when an attacker creates a fraudulent AP with an SSID very similar (or identical) to the legitimate one. Users may accidentally connect, allowing the attacker to capture traffic and credentials.

A. On-path is the consequence of connecting to the evil twin, not the initial attack itself.

B. Rogue AP is any unauthorized access point, but the key here is the malicious mimicry of a legitimate SSID — specifically an evil twin.

D. Tailgating is a physical social engineering attack, unrelated to Wi-Fi.

References (CompTIA Network+ N10-009):

Domain: Network Security — Wireless threats (rogue APs, evil twins).

To increase overall security after a recent breach, implementing least privilege network access and central policy management are effective strategies.

Least Privilege Network Access: This principle ensures that users and devices are granted only the access necessary to perform their functions, minimizing the potential for unauthorized access or breaches. By limiting permissions, the risk of an attacker gaining access to critical parts of the network is reduced.

Central Policy Management: Centralized management of security policies allows for consistent and streamlined implementation of security measures across the entire network. This helps in quickly responding to security incidents, ensuring compliance with security protocols, and reducing the chances of misconfigurations.

Network References:

CompTIA Network+ N10-007 Official Certification Guide: Discusses network security principles, including least privilege and policy management.

Cisco Networking Academy: Provides training on implementing security policies and access controls.

Network+ Certification All-in-One Exam Guide: Covers strategies for enhancing network security and managing policies effectively.

The correct answer is Static because static routes have a lower administrative distance (AD) than most dynamic routing protocols, giving them higher priority when a router selects routes for the same destination network. According to CompTIA Network+ (N10-009) routing objectives, administrative distance is used to determine the trustworthiness of a route source when multiple routing protocols provide a path to the same subnet. The lower the administrative distance, the more preferred the route.

By default, a static route has an administrative distance of 1, which is lower than OSPF (110) and BGP (20 for eBGP, 200 for iBGP). Because of this, when identical routes to a subnet exist from both static and dynamic sources, the router installs the static route in the routing table.

A default route (0.0.0.0/0) is only used when no more specific route exists and does not take precedence over specific static or dynamic routes.

Therefore, when building the routing table for a given subnet and comparing route sources, static routes take precedence due to their lower administrative distance.

A client-to-site VPN (remote-access VPN) is designed to let an individual user securely connect into an organization’s network over an untrusted network (like the internet) and access resources as if the user were locally connected. Network+ objectives emphasize VPNs as encrypted tunnels that provide confidentiality and integrity for traffic, commonly using technologies such as IPsec or SSL/TLS-based VPNs. With a client-to-site VPN, the user’s device establishes a tunnel to the corporate VPN gateway, receives routes (and sometimes DNS settings), and can reach internal subnets and cloud resources according to policy.

A jump box/host is a hardened intermediate system used to access sensitive segments, but it does not make the user’s device behave as if it is directly on the network; it provides controlled administrative access. SSH is a secure remote management protocol for connecting to a host’s command line—useful for administration, not full network access to multiple internal resources. A GRE tunnel provides encapsulation but does not provide encryption by itself, so it is not inherently “securely access” unless combined with additional security (e.g., GRE over IPsec). Therefore, client-to-site VPN is the correct choice.

A screened subnet, also commonly called a DMZ, is the best and most cost-effective deployment for isolating an external-facing web server from the internal organization. A screened subnet places publicly accessible systems in a separate network segment between the internet and the trusted internal network. Firewall rules can then strictly control what traffic is allowed between the internet, the screened subnet, and the internal network. This reduces the risk that a compromised public web server can directly communicate with or attack internal systems.

The CompTIA Network+ N10-009 objectives include network segmentation, security zones, screened subnets, firewalls, and access control. A screened subnet is a standard design for services that must be reachable from untrusted networks while protecting internal resources.

An IPS can detect or block malicious traffic, but it does not provide the same segmentation design by itself. A WAF protects web applications from application-layer attacks, but it does not necessarily prevent the web server from communicating with internal systems. An ACL may help, but a screened subnet provides the better architectural control. Therefore, the correct answer is a screened subnet for the web server.

nmap (Network Mapper) is the best tool in this scenario. It can scan the 192.168.1.0/24 subnet to discover live hosts, open ports (like Telnet on port 23), and device types. It’s ideal for mapping and auditing the network.

A. dig is a DNS lookup tool; not useful for identifying hosts on a subnet.

C. tracert shows the path packets take to a destination, not for host discovery.

D. telnet is the protocol being used, not a tool for scanning or identifying devices.

???? Reference:

CompTIA Network+ N10-009 Official Objectives: 5.1 – Given a scenario, use the appropriate network troubleshooting tools.

The correct appliance is a router, which is specifically designed to interconnect multiple networks and forward packets based on IP addresses. Routers operate at Layer 3 (Network layer) of the OSI model and make intelligent forwarding decisions to ensure data reaches the correct destination network.

A. Firewall can also forward traffic, but its primary function is security, not routing efficiency.

C. Layer 2 switches connect devices within the same LAN but do not forward packets between different networks without routing capability.

D. Load balancers distribute traffic among servers but are not general-purpose routers.

Modern enterprise routers are optimized to minimize latency by using fast switching and hardware acceleration, making them ideal for interconnecting logical networks securely and efficiently.

References (CompTIA Network+ N10-009):

Domain: Network Infrastructure — Routers, Layer 3 devices, inter-network communication.

Inconsistent arrival of RTP (Real-Time Protocol) packets indicates jitter or latency variation. A protocol analyzer (packet sniffer, e.g., Wireshark) can capture and analyze RTP streams, showing delay, jitter, and packet loss statistics.

A. Toner and probe locates cable runs, not packet analysis.

C. Cable tester checks wiring faults, not packet timing.

D. Spectrum reader is for identifying wireless interference, not analyzing RTP traffic.

References (CompTIA Network+ N10-009):

Domain: Network Troubleshooting — Protocol analyzers, VoIP troubleshooting, jitter analysis.

(Note: Ips will be change on each simulation task, so we have given example answer for the understanding)

To perform a network discovery by entering commands into the terminal, you can use the following steps:

Click on each switch to open its terminal window.

Enter the command show ip interface brief to display the IP addresses and statuses of the switch interfaces.

Enter the command show vlan brief to display the VLAN configurations and assignments of the switch interfaces.

Enter the command show cdp neighbors to display the information about the neighboring devices that are connected to the switch.

Fill in the missing information in the diagram using the drop-down menus provided.

Here is an example of how to fill in the missing information for Core Switch 1:

The IP address of Core Switch 1 is 192.168.1.1.

The VLAN configuration of Core Switch 1 is VLAN 1: 192.168.1.0/24, VLAN 2: 192.168.2.0/24, VLAN 3: 192.168.3.0/24.

The neighboring devices of Core Switch 1 are Access Switch 1 and Access Switch 2.

The interfaces that connect Core Switch 1 to Access Switch 1 are GigabitEthernet0/1 and GigabitEthernet0/2.

The interfaces that connect Core Switch 1 to Access Switch 2 are GigabitEthernet0/3 and GigabitEthernet0/4.

You can use the same steps to fill in the missing information for Access Switch 1 and Access Switch 2.

To monitor the contents of data (i.e., inspect the actual packets/frames and their payloads) moving between networks, the administrator should use port mirroring (also called SPAN on some platforms). Port mirroring copies traffic from one or more switch ports (or VLANs) to a designated monitoring port where a packet analyzer/IDS sensor can capture and inspect the traffic in detail. This aligns with Network+ (N10-009) security and monitoring concepts that distinguish between packet-level visibility and higher-level summaries or logs. If the requirement is explicitly to monitor “contents,” you need a method that provides full packet capture capability, not just metadata.

Flow data (e.g., NetFlow) provides summarized metadata—who talked to whom, how much, ports, and timestamps—but not full payload contents. Syslog entries are device/application-generated logs and only show events a device chooses to report; they don’t provide full data content visibility. SNMP traps are alerts about status changes (interfaces, thresholds, etc.) and similarly do not include traffic contents. Therefore, port mirroring is the correct monitoring method for inspecting data contents in transit.

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A warm site is a compromise between a hot site and a cold site, providing a balance between cost and recovery time. It is partially equipped with the necessary hardware, software, and infrastructure, allowing for a quicker recovery compared to a cold site but at a lower cost than a hot site.

Recovery Time: Warm sites can be operational within hours to a day, making them suitable for non-critical applications that can tolerate short downtimes.

Cost-Effectiveness: Warm sites are more economical than hot sites as they do not require all systems to be fully operational at all times.

Network References:

CompTIA Network+ N10-007 Official Certification Guide: Discusses disaster recovery strategies and the different types of recovery sites.

Cisco Networking Academy: Provides training on disaster recovery planning and site selection.

Network+ Certification All-in-One Exam Guide: Explains the characteristics of hot, warm, and cold sites and their use cases in disaster recovery planning.

Warm sites offer a practical solution for maintaining business continuity for non-critical applications, balancing the need for availability with cost considerations.

A cable tester is a tool that can help identify issues with the physical cabling, such as breaks or improper terminations, which may prevent the access point from reaching the internet.

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At the transport layer, connectionless communication is typically handled using the User Datagram Protocol (UDP), which transmits data in units called datagrams. Unlike TCP, UDP does not establish a connection before sending data and does not guarantee delivery, making datagrams the correct term for the transmission format in this context. References: CompTIA Network+ Exam Objectives and official study guides.

An incorrect pinout on the patch cable could prevent network connectivity due to mismatched wiring. Even if the cables are the correct length and type, a pinout issue can cause continuity problems and prevent data transmission. Proper crimping with the correct pinout is essential for network cables to function. (Reference: CompTIA Network+ Study Guide, Chapter on Network Media and Topologies)

Enterprise authentication (such as WPA2-Enterprise) utilizes unique credentials for each user, typically integrating with an authentication server like RADIUS. This allows for tracking and logging user activity, ensuring that all connections can be traced back to individual users. PSKs (Pre-Shared Keys) are shared among users and do not provide individual accountability. Captive portals can identify users but are less secure than enterprise authentication, and Wired Equivalent Privacy (WEP) is outdated and not recommended for security purposes.