Practice Free N10-009 Exam Online Questions
Question #51
Which of the following should a network engineer check to verify that updates are still being released for a device?
- A . Baseline configuration
- B . EOL documentation
- C . Asset inventory licensing
- D . Software development life cycle
Correct Answer: B
B
Explanation:
The correct answer is B. EOL documentation. If a network engineer wants to confirm whether a device is still receiving updates, patches, or vendor support, the first thing to review is the vendor’s End-of-Life (EOL) and often related End-of-Support (EOS) documentation. These documents show whether the device is still actively supported, whether firmware and security updates are still being issued, and when that support is scheduled to stop.
This is important in network operations because devices that are no longer supported can become security risks and operational liabilities. Once a vendor declares a product end-of-life or end-of-support, future bug fixes, feature releases, and security updates may no longer be available. That directly affects patch management, lifecycle planning, and risk assessment.
The other choices do not answer the question as directly. A baseline configuration shows the intended device settings, not the support status. Asset inventory licensing helps track ownership, software entitlements, or subscriptions, but it does not prove that updates are still being released. Software development life cycle refers to the process of building software, not the support state of a deployed network device.
For Network+ exam purposes, when the question asks whether updates are still being released, the best source is the vendor’s EOL documentation.
B
Explanation:
The correct answer is B. EOL documentation. If a network engineer wants to confirm whether a device is still receiving updates, patches, or vendor support, the first thing to review is the vendor’s End-of-Life (EOL) and often related End-of-Support (EOS) documentation. These documents show whether the device is still actively supported, whether firmware and security updates are still being issued, and when that support is scheduled to stop.
This is important in network operations because devices that are no longer supported can become security risks and operational liabilities. Once a vendor declares a product end-of-life or end-of-support, future bug fixes, feature releases, and security updates may no longer be available. That directly affects patch management, lifecycle planning, and risk assessment.
The other choices do not answer the question as directly. A baseline configuration shows the intended device settings, not the support status. Asset inventory licensing helps track ownership, software entitlements, or subscriptions, but it does not prove that updates are still being released. Software development life cycle refers to the process of building software, not the support state of a deployed network device.
For Network+ exam purposes, when the question asks whether updates are still being released, the best source is the vendor’s EOL documentation.
Question #52
Which of the following types of network architecture typically uses leased lines to provide dedicated, private connections between multiple satellite offices and a head office?
- A . Mesh
- B . Point to point
- C . Hub and spoke
- D . Star
Correct Answer: C
C
Explanation:
The correct answer is hub-and-spoke. In this design, the head office serves as the hub, and all satellite or branch offices (the spokes) connect directly to the hub using leased lines or VPNs. Communication between spokes typically passes through the hub, which centralizes connectivity and simplifies management.
C
Explanation:
The correct answer is hub-and-spoke. In this design, the head office serves as the hub, and all satellite or branch offices (the spokes) connect directly to the hub using leased lines or VPNs. Communication between spokes typically passes through the hub, which centralizes connectivity and simplifies management.
Question #53
Which of the following VPN configurations forces a remote user to access internet resources through the corporate network?
- A . Clientless
- B . Site-to-site
- C . SSE
- D . Full-tunnel
Correct Answer: D
D
Explanation:
A full-tunnel VPN forces a remote user’s traffic―including access to public internet resources―to traverse the corporate VPN tunnel and egress from the organization’s network. This is commonly required to ensure consistent enforcement of corporate security controls such as web filtering, IDS/IPS inspection, DLP policies, logging, and access control. In Network+ terms, full-tunnel VPNing routes the user’s default gateway through the VPN, meaning both internal traffic (to corporate subnets) and external traffic (to internet destinations) is sent through the encrypted tunnel.
By contrast, a split-tunnel VPN (not listed) would send only corporate-bound traffic through the VPN while allowing internet traffic to go directly out the user’s local ISP―reducing corporate bandwidth usage but also reducing centralized inspection and control. Clientless VPN usually refers to browser-based access to specific internal applications without a full network tunnel for all traffic. Site-to-site VPN connects entire networks to each other (e.g., branch office to HQ) rather than an individual remote user. SSE (Security Service Edge) is a cloud security framework/service model, not the classic VPN configuration described in the question. Hence, full-tunnel is the correct answer.
D
Explanation:
A full-tunnel VPN forces a remote user’s traffic―including access to public internet resources―to traverse the corporate VPN tunnel and egress from the organization’s network. This is commonly required to ensure consistent enforcement of corporate security controls such as web filtering, IDS/IPS inspection, DLP policies, logging, and access control. In Network+ terms, full-tunnel VPNing routes the user’s default gateway through the VPN, meaning both internal traffic (to corporate subnets) and external traffic (to internet destinations) is sent through the encrypted tunnel.
By contrast, a split-tunnel VPN (not listed) would send only corporate-bound traffic through the VPN while allowing internet traffic to go directly out the user’s local ISP―reducing corporate bandwidth usage but also reducing centralized inspection and control. Clientless VPN usually refers to browser-based access to specific internal applications without a full network tunnel for all traffic. Site-to-site VPN connects entire networks to each other (e.g., branch office to HQ) rather than an individual remote user. SSE (Security Service Edge) is a cloud security framework/service model, not the classic VPN configuration described in the question. Hence, full-tunnel is the correct answer.
Question #53
Which of the following VPN configurations forces a remote user to access internet resources through the corporate network?
- A . Clientless
- B . Site-to-site
- C . SSE
- D . Full-tunnel
Correct Answer: D
D
Explanation:
A full-tunnel VPN forces a remote user’s traffic―including access to public internet resources―to traverse the corporate VPN tunnel and egress from the organization’s network. This is commonly required to ensure consistent enforcement of corporate security controls such as web filtering, IDS/IPS inspection, DLP policies, logging, and access control. In Network+ terms, full-tunnel VPNing routes the user’s default gateway through the VPN, meaning both internal traffic (to corporate subnets) and external traffic (to internet destinations) is sent through the encrypted tunnel.
By contrast, a split-tunnel VPN (not listed) would send only corporate-bound traffic through the VPN while allowing internet traffic to go directly out the user’s local ISP―reducing corporate bandwidth usage but also reducing centralized inspection and control. Clientless VPN usually refers to browser-based access to specific internal applications without a full network tunnel for all traffic. Site-to-site VPN connects entire networks to each other (e.g., branch office to HQ) rather than an individual remote user. SSE (Security Service Edge) is a cloud security framework/service model, not the classic VPN configuration described in the question. Hence, full-tunnel is the correct answer.
D
Explanation:
A full-tunnel VPN forces a remote user’s traffic―including access to public internet resources―to traverse the corporate VPN tunnel and egress from the organization’s network. This is commonly required to ensure consistent enforcement of corporate security controls such as web filtering, IDS/IPS inspection, DLP policies, logging, and access control. In Network+ terms, full-tunnel VPNing routes the user’s default gateway through the VPN, meaning both internal traffic (to corporate subnets) and external traffic (to internet destinations) is sent through the encrypted tunnel.
By contrast, a split-tunnel VPN (not listed) would send only corporate-bound traffic through the VPN while allowing internet traffic to go directly out the user’s local ISP―reducing corporate bandwidth usage but also reducing centralized inspection and control. Clientless VPN usually refers to browser-based access to specific internal applications without a full network tunnel for all traffic. Site-to-site VPN connects entire networks to each other (e.g., branch office to HQ) rather than an individual remote user. SSE (Security Service Edge) is a cloud security framework/service model, not the classic VPN configuration described in the question. Hence, full-tunnel is the correct answer.
Question #55
Which of the following routing technologies allows all users to access the internet using only two public IPs?
- A . EIGRP
- B . PAT
- C . BGP
- D . VIP
Correct Answer: B
B
Explanation:
The correct answer is B. PAT. Port Address Translation allows many internal devices that use private IP addresses to share a small number of public IP addresses when accessing the internet. In this case,
the question says all users can access the internet using only two public IPs, which is exactly the kind of situation PAT is designed for. The device performing PAT keeps track of each connection by using source port numbers, so multiple internal sessions can be translated and maintained at the same time without requiring a unique public IP for every user.
The other options do not match this function. EIGRP and BGP are routing protocols used to exchange routing information, not to translate addresses for outbound internet traffic. VIP refers to a virtual IP address, commonly used in high availability or load-balancing scenarios, but it does not provide the many-to-one address translation behavior described in the question.
For Network+ exam purposes, when the scenario talks about conserving public IPv4 addresses and allowing many users to reach external networks through a very small number of public IPs, the expected answer is PAT. This is one of the most common real-world uses of NAT technology at the network edge.
B
Explanation:
The correct answer is B. PAT. Port Address Translation allows many internal devices that use private IP addresses to share a small number of public IP addresses when accessing the internet. In this case,
the question says all users can access the internet using only two public IPs, which is exactly the kind of situation PAT is designed for. The device performing PAT keeps track of each connection by using source port numbers, so multiple internal sessions can be translated and maintained at the same time without requiring a unique public IP for every user.
The other options do not match this function. EIGRP and BGP are routing protocols used to exchange routing information, not to translate addresses for outbound internet traffic. VIP refers to a virtual IP address, commonly used in high availability or load-balancing scenarios, but it does not provide the many-to-one address translation behavior described in the question.
For Network+ exam purposes, when the scenario talks about conserving public IPv4 addresses and allowing many users to reach external networks through a very small number of public IPs, the expected answer is PAT. This is one of the most common real-world uses of NAT technology at the network edge.
Question #56
While deploying a new fleet of computers on a DHCP network, a network administrator notices that new computers cannot connect to the internet.
Which of the following is most likely the problem?
- A . Incorrect default gateway
- B . Address pool exhaustion
- C . Duplicate IP address
- D . Incorrect subnet mask
Correct Answer: B
B
Explanation:
The best answer is B. Address pool exhaustion. The key detail is that this started happening while deploying a new fleet of computers on a DHCP network. That strongly suggests the number of available leases in the DHCP scope has been used up. When no more addresses are available, new devices cannot obtain valid network settings and will fail to connect properly.
This is a common issue when many systems are added at once. Existing devices may already be consuming most or all of the available leases, and the new clients are left without an address assignment. Without a valid IP configuration from DHCP, the computers will not be able to reach the local network or the internet in the normal way.
The other choices are possible network problems in general, but they are less likely in this exact scenario. An incorrect default gateway or incorrect subnet mask would more often reflect a bad DHCP option or a misconfiguration affecting many clients in a different way. A duplicate IP address can affect connectivity, but it does not naturally match the clue about many new devices being added at once on a DHCP scope.
When a question combines DHCP, many new clients, and sudden inability for new systems to connect, address pool exhaustion is the most likely cause.
B
Explanation:
The best answer is B. Address pool exhaustion. The key detail is that this started happening while deploying a new fleet of computers on a DHCP network. That strongly suggests the number of available leases in the DHCP scope has been used up. When no more addresses are available, new devices cannot obtain valid network settings and will fail to connect properly.
This is a common issue when many systems are added at once. Existing devices may already be consuming most or all of the available leases, and the new clients are left without an address assignment. Without a valid IP configuration from DHCP, the computers will not be able to reach the local network or the internet in the normal way.
The other choices are possible network problems in general, but they are less likely in this exact scenario. An incorrect default gateway or incorrect subnet mask would more often reflect a bad DHCP option or a misconfiguration affecting many clients in a different way. A duplicate IP address can affect connectivity, but it does not naturally match the clue about many new devices being added at once on a DHCP scope.
When a question combines DHCP, many new clients, and sudden inability for new systems to connect, address pool exhaustion is the most likely cause.
Question #57
A network engineer configures an application server so that it automatically adjusts resource allocation as demand changes. This server will host a new application and demand is not predictable.
Which of the following concepts does this scenario demonstrate?
- A . Scalability
- B . Software as a Service
- C . Hybrid cloud
- D . Elasticity
Correct Answer: D
D
Explanation:
Elasticity is the ability of a system (often in cloud environments) to automatically scale resources up or down in real time based on demand.
D
Explanation:
Elasticity is the ability of a system (often in cloud environments) to automatically scale resources up or down in real time based on demand.
Question #58
A network architect needs to create a wireless field network to provide reliable service to public safety vehicles.
Which of the following types of networks is the best solution?
- A . Mesh
- B . Ad hoc
- C . Point-to-point
- D . Infrastructure
Correct Answer: A
A
Explanation:
A mesh network is the best solution for providing reliable wireless service to public safety vehicles. In a mesh network, each node (vehicle) can connect to multiple other nodes, providing multiple paths for data to travel. This enhances reliability and redundancy, ensuring continuous connectivity even if one or more nodes fail. Mesh networks are highly resilient and are well-suited for dynamic and mobile environments such as public safety operations.
Reference: CompTIA Network+ study materials.
A
Explanation:
A mesh network is the best solution for providing reliable wireless service to public safety vehicles. In a mesh network, each node (vehicle) can connect to multiple other nodes, providing multiple paths for data to travel. This enhances reliability and redundancy, ensuring continuous connectivity even if one or more nodes fail. Mesh networks are highly resilient and are well-suited for dynamic and mobile environments such as public safety operations.
Reference: CompTIA Network+ study materials.
Question #59
A company is expanding to another floor in the same building. The network engineer configures a new switch with the same VLANs as the existing stack. When the network engineer connects the new switch to the existing stack, all users lose connectivity.
Which of the following is the MOST likely reason?
- A . The new switch has unused ports disabled
- B . The new switch does not have a default gateway
- C . The new switch is connected to an access port
- D . The new switch is in a spanning tree loop
Correct Answer: D
D
Explanation:
This describes a Spanning Tree Protocol (STP) loop. If STP isn’t correctly configured or a redundant link is added without STP protection, it causes broadcast storms and network outages.
D
Explanation:
This describes a Spanning Tree Protocol (STP) loop. If STP isn’t correctly configured or a redundant link is added without STP protection, it causes broadcast storms and network outages.
Question #60
Which of the following are environmental factors that should be considered when installing equipment in a building? (Select two).
- A . Fire suppression system
- B . UPS location
- C . Humidity control
- D . Power load
- E . Floor construction type
- F . Proximity to nearest MDF
Correct Answer: A
A
Explanation:
When installing equipment in a building, environmental factors are critical to ensure the safety and longevity of the equipment. A fire suppression system is essential to protect the equipment from fire hazards. Humidity control is crucial to prevent moisture-related damage, such ascorrosion and short circuits, which can adversely affect electronic components. Both factors are vital for maintaining an optimal environment for networking equipment.
Reference: CompTIA Network+ study materials.
A
Explanation:
When installing equipment in a building, environmental factors are critical to ensure the safety and longevity of the equipment. A fire suppression system is essential to protect the equipment from fire hazards. Humidity control is crucial to prevent moisture-related damage, such ascorrosion and short circuits, which can adversely affect electronic components. Both factors are vital for maintaining an optimal environment for networking equipment.
Reference: CompTIA Network+ study materials.