Security+ (2021) Free Sample Questions

Weak encryption is a critical vulnerability for unpatched programmable logic controllers and OT systems accessible over the internet, as these legacy systems often use outdated or no encryption protocols, making them vulnerable to man-in-the-middle attacks and data interception. Server-side request forgery (SSRF) is also highly impactful as the LAMP server backend can be exploited to make unauthorized requests to internal OT systems.

Server-side request forgery (SSRF) attacks are particularly dangerous for LAMP servers managing OT systems, as attackers can exploit the web interface to make internal requests to programmable logic controllers and other industrial systems. Combined with weak encryption on unpatched systems, SSRF can lead to complete compromise of operational technology infrastructure.

Full-disk encryption is the best solution for BYOD environments as it protects company data stored on personal devices even if the device is lost, stolen, or compromised. Unlike other options, full-disk encryption ensures data remains secure regardless of device ownership while allowing employees to use their personal devices freely.

Implementing application whitelisting prevents unauthorized software execution, centralized event-log management enables rapid incident detection and response, and regular testing of full backups ensures quick recovery from ransomware attacks. This combination directly addresses preparation, response, and recovery - the CSO key priorities for ransomware resilience.

Performing a site survey is essential for diagnosing wireless connectivity issues in a warehouse environment, as it identifies dead zones, interference sources, and optimal access point placement for mobile devices on forklifts. Site surveys provide detailed RF coverage maps and signal strength measurements needed to resolve intermittent connectivity problems.

Creating a heat map visualizes wireless signal strength and coverage patterns throughout the warehouse, showing exactly where mobile devices on forklifts experience connectivity issues. Heat maps identify dead zones and interference patterns that cause intermittent connectivity, enabling targeted solutions for optimal wireless coverage.

The dd command creates bit-for-bit forensic copies of hard drives, preserving all data including deleted files, file system metadata, and unallocated space required for digital forensics investigations. Unlike other tools, dd creates exact duplicate images that maintain evidential integrity and chain of custody for legal proceedings.