- (Topic 1)
A network administrator must ensure that a printer will still be assigned a specific IP address even if all addresses are depleted. Which of the following network configuration concepts is this describing?

Correct Answer:C
Comprehensive and Detailed Explanation From Exact Extract:
A DHCP reservation binds a specific MAC address to an IP address so the device always receives the same IP from the DHCP server. This ensures network devices like printers maintain consistent connectivity and availability even when the IP pool is low.
Reference: "CompTIA A+ Complete Study Guide" by Quentin Docter – Chapter 18, page 1252.

- (Topic 1)
A customer is able to print most documents with their USB inkjet printer, but the system is unresponsive when printing a certain report from a custom application. Nothing will print until the computer is restarted and the printer is power cycled. A technician remotes into the PC and confirms that the spooler stops working when this report is sent. After cleaning the spooler and reinstalling the drivers from the manufacturer's website, the issue persists. No other sites using the application report similar issues. Which of the following is most likely causing the issue?

Correct Answer:B
Comprehensive and Detailed Explanation From Exact Extract:
If a print spooler crashes specifically with one application and no issue occurs on other systems, the most likely root cause is a bug within that specific application. Restarting the spooler and reinstalling drivers resolves system-wide or hardware-related issues—not app- specific failures. This indicates the application may be sending malformed print data. Reference: "CompTIA A+ Certification All-in-One Exam Guide" by Mike Meyers – Chapter 26, page 1144.

- (Topic 1)
Which of the following would prevent a virtual machine from communicating with any endpoints on a network or the internet?

Correct Answer:C
Comprehensive and Detailed In-Depth Explanation:
Asandboxis an isolated virtual environment used totest or run applications securelywithout risk to the host or network. It prevents the VM from communicating with external systems, making it ideal for testing malware or suspicious software.
✑ Option A (VDI):Virtual Desktop Infrastructure allows network communication; it
does not restrict it.
✑ Option B (Private cloud):Refers to a cloud deployment model, not a communication barrier.
✑ Option D (Type 1 hypervisor):Runs VMs directly on hardware and doesnotinherently block communication.
CompTIA A+ Core 1 Exam Objective Reference:
✑ Objective 4.1: Compare and contrast cloud computing concepts.
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- (Topic 1)
A customer reports a problem connecting to network resources. After asking open-ended questions, the technician determines the issue likely exists on the remote server. Which of the following should the technician do next?

Correct Answer:B
After determining the issue is likely on the remote server, the technician should test the theory to confirm the root cause before proceeding.
Why Not A (Document the findings): Documentation comes after confirming the issue. Why Not C (Gather information): Information gathering is already completed.
Why Not D (Establish a plan of action): This is done after confirming the issue. CompTIA A+ Exam Reference: Core 2 (220-1102), Section 3.1, troubleshooting methodology.

- (Topic 1)
A company needs to develop a disaster recovery solution based on virtual machines. Which of the following service models is the most suitable?

Correct Answer:A
Comprehensive and Detailed In-Depth Explanation:
Infrastructure as a Service (IaaS)providesvirtualized computing resources over the internetsuch as servers, storage, and networking. It allows a business to quickly spin up virtual machines and is ideal fordisaster recoveryand scalable IT infrastructure needs.
✑ Option B:SecaaS focuses on cloud-delivered security, not infrastructure.
✑ Option C:PaaS offers development environments, not full virtual infrastructure.
✑ Option D:SaaS delivers applications over the internet (e.g., email, CRM) — not for disaster recovery.
CompTIA A+ Core 1 Exam Objective Reference:
✑ Objective 4.1: Compare and contrast cloud computing concepts.
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- (Topic 1)
Which of the following services is used to allocate IP addresses in an enterprise-wide environment?

Correct Answer:D
Dynamic Host Configuration Protocol (DHCP) is a network service used to automatically assign IP addresses and other network configuration details (such as subnet masks and default gateways) to devices on an enterprise-wide network.
Why Not A (DNS): DNS resolves domain names to IP addresses but does not allocate IP addresses.
Why Not B (Syslog): Syslog is used for logging system events, not IP address management.
Why Not C (Telnet): Telnet is a protocol for remote access, not for IP allocation. CompTIA A+ Exam Reference: Core 1 (220-1201), Section 2.6, DHCP concepts.