220-1101 Exam Dumps - CompTIA A+ Certification Exam: Core 1

ECC (Error-Correcting Code) RAM is commonly used in servers to provide error detection and correction, improving reliability in critical systems. It is designed to detect and correct single-bit errors, ensuring data integrity in environments where stability is paramount.

Option A (SODIMM): Incorrect. SODIMM is typically used in laptops, not servers.

Option B (Rambus): Incorrect. Rambus is an outdated RAM type and not commonly used today.

Option C (DDR3): Incorrect. While DDR3 is a type of RAM, it is not specific to servers and does not provide error correction.

References:

CompTIA A+ Core 1 Objectives: 3.2 (RAM types and their uses)​

Input voltage must be validated to ensure desktop PCs can operate in different regions with varying power standards (e.g., 110V in North America vs. 220V in Europe). Failure to verify input voltage compatibility can lead to hardware damage or operational issues.

Option B (BIOS language support): Incorrect. While language support may be helpful, it is not critical for hardware deployment across regions.

Option C (Supply chain security): Incorrect. This refers to ensuring secure sourcing of components but does not directly impact deployment.

Option D (Power efficiency): Incorrect. Power efficiency may be important for energy savings but is not relevant to regional compatibility.

References:

CompTIA A+ Core 1 Objectives: 3.5 (Power supply requirements)​

Step by Step Detailed Comprehensive Explanation with All CompTIA References:

Analysis of the Problem:

High-end video cards require PCIe slots. NVMe provides the fastest storage connections.

Option Evaluation:

A. Molex: Used for older components like fans. Irrelevant. Incorrect.

B. NVMe: Provides high-speed storage via M.2 or PCIe. Correct.

C. SATA: Slower than NVMe. Incorrect.

D. FireWire: Obsolete for modern hardware. Incorrect.

E. USB-C: Used for peripherals, not internal hardware. Incorrect.

F. PCIe: Required for high-end video cards. Correct.

An MX (Mail Exchange) record in DNS specifies the mail server responsible for accepting email messages on behalf of a domain. It is a vital component of the email delivery process, directing email to the correct server based on the domain part of the email address. Without properly configured MX records, a domain's email system cannot function correctly.

The CMOS battery powers the real-time clock (RTC) on the motherboard, which maintains the date and time when the computer is turned off. If the battery fails, the system will lose date and time settings, reverting to defaults on restart.

Why Not A (OS updates): While OS updates can sometimes cause time issues, they don’t typically affect changes persisting after shutdown.

Why Not C (NTP server): An incorrect NTP server setting would cause the system to synchronize incorrectly, but this issue relates to time resetting during power-off.

Why Not D (RAM): RAM is volatile memory and unrelated to storing persistent time settings.

CompTIA A+ Exam Reference: Core 1 (220-1101), Section 3.4, motherboard troubleshooting​.

A hybrid cloud is a cloud computing environment that combines on-premises, private cloud, and public cloud resources. This configuration allows organizations to deploy workloads and data in a way that optimizes performance, security, and cost management.

Key Characteristics of a Hybrid Cloud:

Combines private cloud (on-premises or dedicated servers) and public cloud (resources accessed over the internet).

Allows for the movement of data and applications between private and public clouds.

Supports scenarios where certain data must remain on-premises for security or compliance reasons, while other workloads utilize the scalability of public cloud resources.

Comparison to Other Options:

A. Private Cloud: A private cloud is a dedicated environment for a single organization, either on-premises or hosted by a service provider. It does not include any public cloud integration, as seen in a hybrid model.

C. Community Cloud: This model is shared among several organizations with similar requirements, typically for collaborative projects, and does not blend public and private infrastructure.

D. Public Cloud: Resources are entirely hosted on a cloud provider’s infrastructure and are shared among multiple customers, lacking the private, dedicated resources of a hybrid setup.

CompTIA A+ Exam Objectives References:

220-1101 (Core 1), Section 4.1 outlines various cloud-computing models, including private, public, hybrid, and community clouds.

Hybrid cloud is explicitly described as an environment that mixes private and public resources to deliver flexible and scalable solutions​.

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.

References:

CompTIA A+ Core 1 Exam Objectives Section 4.0: Virtualization and Cloud Computing

Punch-down blocks are commonly used to terminate and manage cabling for telephone systems and Ethernet networks (e.g., Cat 5, Cat 6). These blocks allow for efficient organization and connection of wires.

Why Not B (Fiber): Fiber cables use specialized connectors (e.g., SC, LC) and are not terminated with punch-down blocks.

Why Not C (HDMI): HDMI cables are pre-terminated and not designed for punch-down termination.

Why Not E (Coaxial): Coaxial cables use screw-type or compression connectors, not punch-down blocks.

Why Not F (USB): USB cables are also pre-terminated with proprietary connectors.

CompTIA A+ Exam Reference: Core 1 (220-1101), Section 3.1, cable termination techniques​.