220-1101 Exam Dumps - CompTIA A+ Questions and Answers

A DHCP lease is a temporary assignment of an IP address and other network configuration parameters (such as DNS and gateway) to a device. The lease is renewed periodically to maintain the assignment.

Why Not A (A definition of the scope of addresses): The DHCP scope defines the range of IP addresses but is not the lease itself.

Why Not B (A reservation of an IP configuration): DHCP reservations ensure a specific device always receives the same IP address, but this is not the lease.

Why Not D (A translation of network names to IP addresses): This describes DNS, not DHCP.

CompTIA A+ Exam Reference: Core 1 (220-1101), Section 2.6, DHCP concepts​.

A Storage Area Network (SAN) is primarily used for data archiving and large-scale storage. SANs provide high-speed, block-level storage for enterprise environments.

Why Not A (PAN): Personal Area Networks are for connecting personal devices like phones and smartwatches.

Why Not B (MAN): Metropolitan Area Networks are for city-wide data communication, not storage.

Why Not D (LAN): Local Area Networks are for general connectivity, not dedicated storage.

Why Not WAN: Wide Area Networks are for connecting geographically dispersed networks, not storage.

CompTIA A+ Exam Reference: Core 1 (220-1101), Section 2.7, network types and purposes​.

If a desktop PC shuts down suddenly and there is a burning smell coming from the area where it is connected to the wall socket, the first step should be to check that the power cable is not damaged. A damaged power cable can cause electrical shorts or overheating, leading to sudden shutdowns and a burning smell. Inspecting the power cable for fraying, cuts, or other damage can help identify if it is the source of the problem.

When preparing for a webinar, it is crucial to ensure that all necessary multimedia hardware is functional for both input and output devices. The three key hardware components to test and configure in a webinar setting are:

C. Speakers: The user must test and configure speakers to hear the audio during the webinar, such as the presenter's voice or any media shared.

E. Camera: The camera is essential for video communication, allowing the user to broadcast their image to others in the webinar. Many webinar platforms will have settings to test and adjust the video feed from the camera.

G. Microphone: A functional microphone is critical for the user to participate verbally in the webinar. The user should test this to ensure that they can be heard clearly by other participants.

Why the other options are incorrect:

A. Keyboard: While it might be used to type messages or navigate, it’s not necessary to test the keyboard specifically for webinar participation.

B. Digital pen: A digital pen is used for specialized input, like drawing or writing on touchscreen devices, but it is not typically required for a standard webinar.

D. Mouse: Similar to the keyboard, a mouse can help navigate, but it's not crucial to test for functionality in a webinar context.

F. Docking station: A docking station is a hardware peripheral that provides additional ports and connectivity. While it might be useful, testing the docking station itself isn't necessary for ensuring a successful webinar.

H. Monitor: A monitor allows the user to view the content, but it typically does not need to be specifically tested in a webinar application. The focus should be on audio and video components.

These components fall under the Mobile Devices and Peripheral Hardware domain of the CompTIA A+ Core 1 exam​​.

Port 21 is used by FTP (File Transfer Protocol) for file transfers. Port 53 is for DNS, port 68 is for DHCP, and port 389 is for LDAP. Understanding standard network ports is essential in CompTIA A+ Core 1 objectives, especially in networking and troubleshooting scenarios.

Before creating a virtual machine (VM) on a computer, it's crucial to ensure that the CPU supports virtualization and that this feature is enabled in the BIOS (or UEFI) settings. While sufficient RAM and hard drive space are also important for running VMs effectively, and compatibility with the graphics card might be a consideration for VMs with intensive graphical requirements, the foundational step is to verify that the CPU supports virtualization and that this feature is activated in the BIOS settings. This is because virtualization technology, often referred to as VT-x (on Intel CPUs) or AMD-V (on AMD CPUs), is a prerequisite for running most virtualization software efficiently.

A VPN (Virtual Private Network) is the technology that allows a home PC to connect securely to a company's network over the internet. It extends a private network across a public network, enabling users to send and receive data as if their computing devices were directly connected to the private network. This makes VPNs ideal for remote work and accessing company resources securely from a home PC.

NVMe (Non-Volatile Memory Express) is an interface protocol built especially for Solid State Drives (SSDs) to utilize the high-speed PCIe bus in computers. M.2 is a form factor that is commonly used for NVMe SSDs due to its compact size and direct connection to the PCIe interface, which is ideal for laptops. The 2.5" and 3.5" form factors are more commonly associated with SATA drives, and SD is a form factor used for removable flash memory cards, not for internal storage solutions like NVMe SSDs.

The 12VHPWR connector can supply up to 600 watts of power, designed for high-end graphics cards.

Why Not A (400W): This is less than the connector’s maximum capability.

Why Not B (MOW): This is an invalid option.

Why Not D (700W): The maximum supported power is 600W.

CompTIA A+ Exam Reference: Core 1 (220-1101), Section 3.4, power supply and connectors​.

If a laptop does not charge when connected to a USB 3.1 docking station despite the AC adapter being plugged in, the most likely reason is that the dock is not designed to provide power passthrough. This means that the dock's primary function is connectivity for peripherals rather than power delivery to the laptop. The other options are possible but less likely if the sole issue is the absence of charging functionality when the dock and its power supply are properly connected.

When an external touch screen exhibits flickering without registering input on a presentation laptop, the first troubleshooting step should be to check the cables connecting the touch screen to the laptop. This includes ensuring that the cables are securely connected, undamaged, and are the correct type for transmitting both video and touch input data. Faulty, loose, or incorrect cabling can lead to issues like flickering and unregistered inputs.

Hubs operate in half-duplex mode and are limited to low speeds like 10Mbps, making them the most likely cause for the network card's performance issue.

Why Not A (DSL): DSL relates to internet connectivity, not local network hardware.

Why Not B (Unmanaged switch): Unmanaged switches typically support full-duplex and higher speeds than 10Mbps.

Why Not C (NIC teaming): NIC teaming increases bandwidth and redundancy, and is not relevant to this issue.

CompTIA A+ Exam Reference: Core 1 (220-1101), Section 2.2, networking hardware​.

Printers that use PostScript drivers are designed to handle complex printing tasks, including detailed graphics and images in PDF files. However, if the printer's PostScript driver is outdated, incompatible, or improperly configured, it may struggle to process and print PDF files containing images. Updating or reinstalling the PostScript driver, or choosing a different driver compatible with the printer and document type, can resolve this issue.

The first step a technician should take before upgrading the Wi-Fi card on a laptop, or performing any internal hardware modifications, is to remove the power cable to ensure the device is not powered on. This is a crucial safety measure to prevent any electrical damage to the laptop or the technician. It also helps in avoiding any unintended changes or data loss that might occur if the device is powered on during the upgrade process.

Self-encrypting hardware, such as self-encrypting drives (SEDs), provides an effective solution for securing data with minimal user interaction. SEDs automatically encrypt all data stored on the drive without requiring any special software or user action, ensuring that data remains protected even if the drive is removed from the device. This feature is particularly beneficial for remote users who may not consistently follow manual encryption procedures, offering a seamless and user-transparent method to secure sensitive data.

When a device is experiencing slow file transfers to an external USB drive and the physical connections are confirmed to be correct, the next step is to update the device drivers. Outdated or corrupt drivers can cause suboptimal performance and slow transfer speeds. Updating the drivers can resolve these issues and improve the device's communication with the USB drive, leading to faster file transfers.

After resolving the immediate issue (reactivating server credentials), verifying system functionality ensures the solution works as intended and the user can now access the shared drive. This step is a part of the CompTIA troubleshooting methodology:

Identify the problem.

Establish a theory of probable cause.

Test the theory to determine the cause.

Establish a plan of action.

Implement the solution.

Verify full system functionality.

Document findings, actions, and outcomes.

Why Not B (Document the findings): Documentation comes after verifying the system works.

Why Not A (Escalate the issue): Escalation is unnecessary since the problem was resolved.

Why Not C (Perform backups): Performing backups is unrelated to verifying credential functionality.

CompTIA A+ Exam Reference: Core 2 (220-1102), Section 3.1, troubleshooting methodology​​.

Reasoning: A cable tester capable of testing Power over Ethernet (PoE) functionality can verify whether the switchport is providing the required power to the phone. This tool measures both the presence of data and the voltage or wattage being provided through the Ethernet cable.

This is the most effective way to confirm that PoE is available on the port.

Why the Other Options Are Incorrect:

A. Network tap:

A network tap is primarily used to monitor network traffic, not to test for PoE availability. It cannot verify if power is being supplied through the Ethernet cable.

C. Loopback plug:

A loopback plug is used to test the functionality of a network port by creating a loop for transmitted and received signals. It does not measure or verify PoE availability.

D. Toner probe:

A toner probe is used for tracing and identifying network cables. It cannot test for PoE functionality.

Practical Example:

A PoE phone might not turn on due to a misconfigured or faulty switchport. Using a cable tester capable of measuring PoE would help the technician determine if the switchport is supplying sufficient power to the phone.

CompTIA A+ Exam Objective Alignment:

Objective 2.1: Identify common networking hardware and tools, including PoE-enabled devices and cable testers.

Step by Step Detailed Comprehensive Explanation with All CompTIA References:

Analysis of the Problem:

Switching to the 5GHz frequency improves speed but decreases range and penetration through walls compared to 2.4GHz.

Users experience degraded performance likely due to poor coverage at the 5GHz range.

Option Evaluation:

A. Select a different channel: Useful for interference resolution but not coverage improvement. Incorrect.

B. Switch the Wi-Fi back to 2.4GHz frequency: This downgrades the network speed, which isn't a preferred solution. Incorrect.

C. Upgrade the wireless drivers on the users' devices: Unlikely to resolve coverage issues. Incorrect.

D. Add more access points for better coverage: Improves coverage in areas where 5GHz struggles. Correct.

The technician should boot into the BIOS and enable the TPM on the new motherboard to enable the system to boot again and get access to the stored data1.

Boot into the BIOS and enable the TPM on the new motherboard. Explanation: After upgrading the motherboard, the TPM may need to be enabled in the BIOS in order to access the encrypted key and boot the system. Enabling the TPM on the new motherboard should allow the system to boot and provide access to the encrypted data. References: CompTIA A+ Certification Exam Guide, 220-1001, Chapter 13