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A+ Core 2 · CompTIA 220-1202 V15 · Objective C2-1.4

Given a scenario, use Microsoft Windows operating system features and tools

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Objective 1.4: Given a scenario, use Microsoft Windows operating system features and tools

Cert: CompTIA A+ Core 2 (220-1202) V15 Domain: 1.0 Operating Systems Weight: Part of the 28% Operating Systems domain Depth: Given a scenario, use. The candidate must pick the right Windows administrative tool for a given task and operate it correctly.

What this objective tests

You should know which built-in Windows tool does what, what to launch it from (Start, Run, MMC), and what each tool tells you or lets you change.

This is essentially the "Windows admin tools you'll use every day at a helpdesk" objective. Memorize the .msc and .exe filenames; they're testable as direct facts.

Key facts

Task Manager:

  • Launch: Ctrl+Shift+Esc, or right-click taskbar, or Ctrl+Alt+Del > Task Manager.
  • Default tabs in Windows 10/11: Processes, Performance, App history, Startup apps, Users, Details, Services.
  • Quick view of resource usage, end unresponsive apps, see what's eating CPU/RAM/disk/network.

Processes (Task Manager tab):

  • Shows running apps and background processes with CPU, memory, disk, network, GPU usage per process.
  • Right-click > End task kills a process. Right-click > Open file location shows where the binary lives (useful for malware investigation).

Performance (Task Manager tab):

  • Real-time graphs for CPU (per core), memory, disk (per physical disk), network (per adapter), GPU.
  • Quick triage view for "what's saturated."

Services (Task Manager tab):

  • Lists Windows services with status (Running, Stopped). Stop, start, restart from here.
  • For deeper service config, use services.msc.

Startup (Task Manager tab):

  • Apps configured to launch when Windows starts. Each has an "impact" rating (Low/Medium/High) based on resource use.
  • Disable here to speed boot without uninstalling the app.

Users (Task Manager tab):

  • Currently signed-in users and their resource use. Useful on shared/RDP-server PCs.

Microsoft Management Console (MMC) snap-ins:

  • mmc.exe is the host for many admin tools. Each snap-in is a .msc file that loads into MMC.
  • Launch directly by typing the .msc filename in Run (Win+R) or the Start search.

Event Viewer (eventvwr.msc):

  • Windows log viewer. Three primary logs: Application, Security, System.
  • Filter by event ID, source, or severity (Information, Warning, Error, Critical).
  • First stop for crash investigation, login failure investigation, service startup issues.

Disk Management (diskmgmt.msc):

  • Create, format, shrink, extend, delete partitions. Assign or change drive letters.
  • Initialize new drives (choose GPT or MBR). Convert between basic and dynamic disks.
  • Online/offline a drive.

Task Scheduler (taskschd.msc):

  • Schedule programs and scripts to run on triggers (time, login, event, idle, system boot).
  • Used by Windows internals and IT admins. View task history to confirm a scheduled job ran.

Device Manager (devmgmt.msc):

  • Lists all hardware with status. Yellow exclamation = driver missing or broken. Red X = disabled.
  • Update, roll back, disable, uninstall drivers. View hardware IDs (useful for tracking down obscure devices).

Certificate Manager (certmgr.msc):

  • View and manage certificates installed for the current user (or computer with certlm.msc).
  • Used for code signing certs, S/MIME email certs, VPN client certs, corporate root CAs.

Local Users and Groups (lusrmgr.msc):

  • Manage local user accounts and security groups on the PC. (Not available on Home editions.)
  • Add users to Administrators, Remote Desktop Users, etc.

Performance Monitor (perfmon.msc):

  • Detailed performance counters across hundreds of metrics. Define Data Collector Sets for ongoing logging.
  • Beyond Task Manager's depth; used for sustained performance investigations.

Group Policy Editor (gpedit.msc):

  • Local Group Policy. Configure security, software, and Windows component policies on this PC.
  • Pro and above only. Home users use Registry Editor for equivalent changes.

System Information (msinfo32.exe):

  • Comprehensive system summary: OS version, BIOS version, processor, RAM, motherboard, drivers, services, hardware resources.
  • Right-click results to copy. Good source for hardware inventory and support tickets.

Resource Monitor (resmon.exe):

  • Detailed real-time view of CPU, memory, disk, and network with per-process breakdown.
  • Use when Task Manager's Performance tab isn't granular enough.

System Configuration (msconfig.exe):

  • Boot options (Safe boot, diagnostic startup, no GUI boot), service management, startup item management.
  • Older interface; many functions moved to Task Manager Startup tab or Services snap-in, but msconfig is still the go-to for boot mode changes.

Disk Cleanup (cleanmgr.exe):

  • Free up disk space by deleting temp files, Windows.old, Recycle Bin, system error memory dumps, etc.
  • Modern Windows also offers Storage Sense in Settings as a more automated alternative.

Disk Defragment / Optimize Drives (dfrgui.exe):

  • Defragments HDDs (rearranges file fragments for faster read).
  • For SSDs: runs TRIM, not defrag (defragging an SSD shortens its life without benefit). Windows knows the difference and picks the right action.
  • Runs on schedule by default (weekly).

Registry Editor (regedit.exe):

  • Direct access to the Windows Registry, the hierarchical config database for the OS and apps.
  • Powerful and dangerous. Bad registry changes can prevent boot.
  • Always export the key (or the whole registry) before editing.

Common gotchas

  • Killing a process in Task Manager that the OS depends on. Ending csrss.exe, winlogon.exe, or wininit.exe BSODs the system. Stick to user apps.
  • Editing registry without exporting first. A bad change with no backup means a recovery scenario.
  • Defragging an SSD on purpose. Modern Windows won't actually defrag SSDs (it runs TRIM instead), but old scripts that explicitly call defrag.exe with parameters can do real damage.
  • gpedit.msc missing on Home. "Why won't gpedit.msc open?" because you're on Home edition. Pro upgrade or registry workaround required.
  • Event Viewer overload. Looking at every Information event drowns the signal. Filter to Warning+, narrow by source, focus on the time window around the issue.
  • lusrmgr.msc missing on Home. Same as gpedit; Home edition limitation. Use Settings > Accounts or net user commands for local user management.
  • Disk Cleanup left as the only cleanup. Modern Windows pushes Storage Sense for automated cleanup; both exist, both work, but Storage Sense runs on a schedule.

Real-world context

Typical helpdesk reach-for-this-tool decisions:

  • "My PC is slow." Task Manager > Performance to see what's saturated; Resource Monitor if you need per-process detail.
  • "App won't launch." Event Viewer > Application log filtered by Error around the time of the failure.
  • "Driver isn't working right." Device Manager. Yellow exclamation = check the driver, update or roll back.
  • "Need to free disk space." Disk Cleanup or Storage Sense for the easy wins; check Storage settings for the big consumers.
  • "User needs to be added to the Administrators group." Local Users and Groups (Pro+) or Settings > Accounts (any edition).
  • "Need to disable an app from launching at startup." Task Manager > Startup tab.
  • "Scheduled script needs to run nightly." Task Scheduler.
  • "Need to change a security policy." gpedit.msc (Pro+) or regedit for the equivalent registry path.

Sources

  • [CompTIA A+ 220-1202 Exam Objectives Version 4.0, Section 1.4](../../../../../../30-RevyTechJourney/CompTIA%20A%2B%20220-1202%20Exam%20Objectives%20%284.0%29.pdf)
  • [Microsoft Learn: Task Manager](https://learn.microsoft.com/en-us/shows/inside/task-manager)
  • [Microsoft Learn: Event Viewer](https://learn.microsoft.com/en-us/troubleshoot/windows-server/system-management-components/event-logging-introduction)
  • [Microsoft Learn: Disk Management](https://learn.microsoft.com/en-us/windows-server/storage/disk-management/overview-of-disk-management)
  • [Microsoft Learn: Performance Monitor](https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc749249(v=ws.11))
  • [Microsoft Learn: Registry overview](https://learn.microsoft.com/en-us/windows/win32/sysinfo/registry)