Windows Operating Systems: Editions, Features, and Upgrade Paths
The A+ exam tests Windows 10 and Windows 11 features. Key editions: Home (consumer, no Group Policy, no BitLocker management, no Remote Desktop host), Pro (adds Group Policy, BitLocker, Remote Desktop host, Hyper-V, joining Azure AD and local domain), Enterprise (adds BranchCache, AppLocker, DirectAccess, long-term servicing options). Windows 11 hardware requirements: 64-bit CPU, 4 GB RAM, 64 GB storage, UEFI firmware with Secure Boot, TPM 2.0, and DirectX 12 graphics. The A+ exam focuses on practical administration: Task Manager (CPU, memory, disk, network usage, startup tab for disabling startup programs), Resource Monitor (per-process detail), Event Viewer (Application, Security, System logs), Disk Management (initialise disks, create partitions, extend/shrink volumes), Device Manager (driver management, hardware conflicts shown with yellow exclamation marks).
Command-Line Tools Every Technician Must Know
The A+ exam presents many scenario questions where you must choose the correct command-line tool. Critical ones: ipconfig /all (shows full IP configuration including MAC and DNS), ping (tests layer 3 connectivity), tracert / traceroute (shows each hop to destination, identifies routing failures), nslookup / dig (DNS query testing), netstat -an (active connections and listening ports), sfc /scannow (System File Checker — repairs corrupted Windows system files), DISM /Online /Cleanup-Image /RestoreHealth (repairs the Windows image before running SFC), chkdsk C: /f /r (checks drive for errors and repairs bad sectors — requires restart on the active drive), diskpart (partition management at command line), gpupdate /force (reapplies Group Policy), gpresult /r (shows applied policies for current user and computer).
macOS and Linux for A+ Technicians
macOS basics: Finder is the file manager, Spotlight (Cmd+Space) searches the system, System Preferences/Settings manages configuration, Activity Monitor is the Task Manager equivalent, Disk Utility manages partitions and repairs file systems, Terminal provides bash/zsh shell access. macOS-specific features: Time Machine (automated local and network backups), AirDrop (peer-to-peer file transfer over Wi-Fi/Bluetooth), FileVault (full-disk encryption), iCloud (synchronises documents, photos, settings). Linux basics for A+: the file system hierarchy (/ is root, /home for user files, /etc for configuration, /var for logs, /tmp for temporary files), essential commands (ls, cd, pwd, cp, mv, rm, mkdir, cat, grep, chmod, chown, ps, top, df -h, sudo), package managers (apt for Debian/Ubuntu, yum/dnf for Red Hat/CentOS). File permissions: read (4), write (2), execute (1) — chmod 755 gives owner full access, group and others read/execute.
Security Controls and Best Practices
The Core 2 exam dedicates about 25% of questions to security. Essential controls: least privilege (users get only the permissions they need), multifactor authentication (something you know + something you have + something you are), strong passwords (length beats complexity — 16+ character passphrases are stronger than 8-character passwords with symbols), account lockout policies (lock after N failed attempts to prevent brute force), disable default accounts (guest, administrator accounts that ship enabled by default). Malware types: virus (attaches to files, requires user to run), worm (self-replicates across networks without user action), ransomware (encrypts files, demands payment), spyware (silently monitors activity), adware (unwanted ads), rootkit (hides deep in OS to conceal other malware). Malware removal: identify and quarantine, disable System Restore (prevents re-infection from restore points), boot to safe mode or external media, run multiple scanner tools, restore from clean backup.
Operational Procedures: Documentation, Safety, and Professionalism
About 22% of Core 2 is operational procedures. Documentation types: network diagrams (logical and physical topology), incident reports (what happened, when, impact, resolution), change management documentation (request, approval, test plan, rollback plan, implementation), asset tags and inventory logs. Safety procedures: ESD (electrostatic discharge) protection — wear an anti-static wrist strap when handling components, work on anti-static mats, keep components in ESD bags, never touch chip contacts. MSDS/SDS (Safety Data Sheet) for chemicals used in cleaning and maintenance. Environmental concerns: proper disposal of batteries (do not landfill), CRTs (contain lead — hazardous waste), toner cartridges (recycle programmes). Professionalism: maintain user privacy (do not look at personal files without permission), set and meet expectations, follow up after service, avoid personal calls or distractions during service, respect confidentiality.