Operating systems periodically reach a status known as " end of life " (EOL), at which point the developer (e.
g., Microsoft, Apple) ceases to provide security updates, patches, or technical support. When this happens, the OS becomes vulnerable and non-compliant with security best practices, which is why organizations typically receive advance notifications from vendors or support teams.
A). Manufacturer support expiration only applies to hardware, not OS patching.
C). Security software may be upgraded or removed, but that does not affect patching the OS itself.
D). The release of a new version doesn't automatically stop updates for the current version.
Reference:
CompTIA A+ 220-1102 Objective 1.3: Given a scenario, use appropriate Microsoft operating system features and tools.
Study Guide Section: OS lifecycle management and vendor support phases (e.g., EOL)

A .bat file (batch file) is a script file in DOS, OS/2, and Microsoft Windows. It contains a series of commands that are executed by the command-line interpreter. In Windows environments, batch files are commonly used to automate log-in tasks, such as mapping network drives, launching applications, or setting environment variables during the user ' s logon process.
B). .sh is a shell script used in Linux/Unix environments.
C). .py is a Python script, which can be used for automation but is not commonly run directly at user logon in standard Windows environments.
D). .js is JavaScript, used mainly in web development and not for system-level scripting in Windows logon automation.
Reference:
CompTIA A+ 220-1102 Objective 1.3: Use appropriate Microsoft operating system features and tools.
Study Guide Section: Scripting basics and file types for automation - .bat for Windows

When DHCP isn't enabled, static IPs must be assigned manually, so the engineering team provides the IP details.
FromTravis Everett - All-in-One Exam Guide:
"If DHCP is unavailable, technicians need the static IP configuration to connect devices to the network." .

Adding ten high-end graphics/animation desktops can dramatically increase the electrical load on the room's existing circuits. High-performance CPUs and GPUs draw substantially more wattage than typical office PCs, and that wattage translates into higher current (amperage) on the circuit. Mike Meyers' Lab Manual explains the relationship V × A = W and warns that wiring and circuits have amperage ratings; pushing too much current can overheat wiring and trigger safety devices. It also explains that circuit breakers are rated for a specified amperage and will open (trip) when overloaded to prevent overheating and damage. Therefore, before deployment, the technician should calculate expected power draw per system and ensure the desktops are distributed across sufficient circuits (or that electrical upgrades are made) to avoid repeated breaker trips, overheating risks, and downtime. While temperature and humidity matter for environmental control, the question is specifically about introducing multiple power-hungry workstations, making circuit power consumption the most critical planning factor for safe, stable operation. This aligns with A+ operational
/environmental concepts around proper power handling and avoiding overload conditions.
References: Quentin Docter - CompTIA A+ Complete Study Guide (Safety/Environmental concerns; power- handling focus); Travis Everett & Andrew Hutz - CompTIA A+ All-in-One Exam Guide (V×A=W; circuit breaker behavior under overload); Mark Soper - Mike Meyers' A+ Lab Manual (amperage ratings; circuit breakers trip when overloaded)

To display a file's contents in Linux, the standard command is cat. Quentin Docter states: "Sometime you just need to view the contents of a file. To view the contents of a file, use the cat command," and shows an example cat /etc/hosts displaying the file output. He also lists essential Linux commands and explicitly defines cat as: "Displays the contents of a file." The other options do not meet the requirement: chmod changes file permissions, ls lists directory contents (or file names), and sudo runs a command with elevated privileges-none directly display a file's contents by themselves. A+ also expects you to know that cat can do more than display; it can concatenate files and redirect output, but for this question the key function is simply viewing a file.
Therefore, the correct command is cat (B).