CompTIA A+ Certification Exam: Core 2 Free Sample Questions

VNC (Virtual Network Computing) is the correct choice for providing remote desktop access to Linux systems with graphical user interface support. Unlike SSH which only provides command-line access, VNC transmits the complete desktop environment including GUI applications, allowing the technician to see exactly what the user sees and interact with graphical applications. VPN creates secure network tunnels but doesn't provide desktop sharing capabilities. RDP is Microsoft's proprietary protocol optimized for Windows systems and has limited cross-platform compatibility with Linux environments. Per CompTIA A+ 220-1202 objective 4.9, VNC is specifically designed for cross-platform remote desktop access and collaborative troubleshooting scenarios.

Configuring proper DNS server addresses is essential for domain join operations. Windows uses DNS to locate domain controllers through SRV records (_ldap._tcp.dc._msdcs.domain.com). While the workstation can ping IP addresses and access the internet (indicating basic network connectivity), domain join specifically requires DNS resolution of the domain name and domain controller service records. The ability to ping by IP but fail domain join typically indicates DNS configuration issues. Per CompTIA A+ 220-1202 objectives 1.7 and 2.2, proper DNS configuration pointing to the domain controller's DNS server is mandatory for Active Directory domain join operations in Windows 11 Pro environments.

Submitting a formal change request is the first step in any structured change management process. Before any infrastructure changes can be evaluated, approved, scheduled, or implemented, a documented change request must be created that outlines the purpose, scope, impact analysis, and justification for the change. This aligns with CompTIA A+ 220-1202 objective 4.2 which emphasizes documented business processes and change management procedures. The change request should include details about the EOL equipment, security risks, proposed replacement timeline, and business impact assessment. Only after this formal documentation is created can the change board review and approve the request, followed by scheduling and implementation phases.

TOTP (Time-based One-Time Password) authentication requires precise time synchronization between the mobile device and authentication servers. When traveling internationally, devices may experience time zone changes, automatic daylight saving adjustments, or network time synchronization issues that cause the device clock to drift from the server time. Even small time discrepancies (typically >30 seconds) will cause TOTP codes to be rejected. This is the most common cause of MFA failures after international travel. Per CompTIA A+ 220-1202 objectives 2.8 and 3.2, time synchronization is critical for mobile device security features, and checking time settings should be the first troubleshooting step before more complex solutions like reinstalling applications or contacting developers.

MSDS (Material Safety Data Sheet) documents are specifically designed to provide safety information for handling hazardous materials and emergency response procedures. For lithium-ion UPS batteries, the MSDS would include critical safety information such as: chemical composition hazards, fire suppression methods for lithium fires, personal protective equipment requirements, spill containment procedures, first aid measures for chemical exposure, and disposal regulations for hazardous battery materials. Per CompTIA A+ 220-1202 objective 4.5, MSDS documentation is essential for environmental safety and regulatory compliance, providing workers with necessary safety protocols rather than technical configuration information.

Examining the UEFI boot sequence is the appropriate first step when encountering "Operating System Not Found" errors, especially when external storage devices are connected. The external storage device may have altered the boot priority order, causing the system to attempt booting from the external device instead of the internal drive containing Windows 11. This is a common and easily resolved issue through UEFI/BIOS configuration. Per CompTIA A+ 220-1202 objective 3.1, boot issues should be addressed systematically starting with the least invasive solutions. Checking boot options is non-destructive and often resolves the problem without requiring data recovery tools or drive reformatting, which should only be considered after simpler solutions have been attempted.

BitLocker To Go is Microsoft's encryption solution specifically designed for removable storage devices like USB drives, external hard drives, and SD cards. The primary purpose is data-at-rest encryption to protect sensitive information from unauthorized access when devices are lost, stolen, or compromised. This addresses a critical security vulnerability where unencrypted removable media can expose corporate data to unauthorized parties. Per CompTIA A+ 220-1202 objectives 2.2 and 2.7, BitLocker To Go implements strong AES encryption that requires authentication (password or smart card) to access encrypted data, ensuring that even if physical devices are compromised, the data remains protected through cryptographic controls.

Windows 11 requires TPM 2.0 (Trusted Platform Module) for BitLocker encryption and Windows Hello authentication. TPM 2.0 is a hardware-based security chip that stores encryption keys and provides hardware-level security features. Without TPM 2.0, BitLocker cannot store its encryption keys securely, and Windows Hello biometric authentication will not function. Additionally, Windows 11 has TPM 2.0 as a minimum system requirement, making it essential for both the OS installation and security features.

Zero Trust model requires just-in-time (JIT) access, which provides temporary, time-limited permissions only when needed. This minimizes the attack surface by ensuring users don't have persistent access to sensitive resources. Combined with continuous verification of every transaction, these two approaches form the core of Zero Trust architecture - 'never trust, always verify' with minimal necessary access.

Zero Trust requires continuous verification of every transaction regardless of where it originates. This means every access request is authenticated, authorized, and encrypted before granting access, treating every request as potentially untrusted. This continuous verification ensures that even authenticated users are constantly validated.