CompTIA A+ Core 2
(220-1202)
A+ Study Guide & Exam Notes
Operating Systems | Security | Software Troubleshooting | Operational Procedures
90 Questions • 90 Minutes • Passing Score 700 / 900
Exam Snapshot
Detail
Value
Exam code
220-1202 (Core 2, V15)
Companion exam
Must also pass Core 1 (220-1201) for certification
Questions
Maximum of 90 (multiple-choice + performance-based, PBQs)
Time limit
90 minutes
Passing score
700 on a scale of 100-900
Recommended experience
~12 months hands-on IT support experience
Domain Weighting
#
Domain
Weight
1.0
Operating Systems
28%
2.0
Security
28%
3.0
Software Troubleshooting
23%
4.0
Operational Procedures
21%
EXAM TIP: Operating Systems and Security together make up 56% of the exam — anchor your study time there first.
How to Use This Guide
This guide is organized by the four official Core 2 domains. Each objective lists the concepts you need cold, grouped
facts/comparisons, and an exam tip flagging common trick-question traps. Read a domain, then close the PDF and
try to rebuild the bullet points from memory — active recall beats re-reading.
1.0 Operating Systems (28%)
1.1 Common OS Types and Their Purposes
Workstation OS:
• Windows (Home/Pro/Pro for Workstations/Enterprise) — Pro adds BitLocker, Remote Desktop (host),
Group Policy Editor, Hyper-V; Enterprise adds volume licensing, AppLocker, BranchCache.
• macOS — Unix-based (BSD), uses Finder, APFS file system, Time Machine backups, Keychain for
credentials, Gatekeeper for app security.
• Linux — Open source, distros (Ubuntu, Fedora, Debian, RHEL), package managers apt/yum/dnf, uses
ext4/XFS file systems.
• Chrome OS — Lightweight, cloud-centric, Linux-kernel based, runs Android/Linux apps in containers.
Mobile & Server OS:
• iOS/iPadOS — closed source, single app store, sandboxed apps.
• Android — open source (AOSP), side-loading allowed, more customizable, fragmented updates.
• Windows Server — Active Directory Domain Services, DNS/DHCP roles, GPOs for centralized management.
EXAM TIP: 32-bit systems max out at 4 GB RAM and use x86 architecture; 64-bit (x64) supports far more RAM and is
required for modern editions of Windows 10/11.
1.2 OS Installations and Upgrades
• Boot methods: USB, optical, PXE (network boot), internet-based (Windows Recovery), external drive.
• Types of installation: unattended (answer file), in-place upgrade (keeps files/apps/settings), clean install,
repair install, multiboot, remote network install, image deployment.
• Partitioning: GPT (GUID Partition Table, supports UEFI, >2 TB drives, up to 128 partitions) vs. MBR (legacy
BIOS, 4 primary partitions max, 2 TB limit).
• File systems: NTFS (Windows default, permissions + encryption + journaling), FAT32 (4 GB file size limit,
cross-platform), exFAT (no file size limit, flash drives), ext4 (Linux), APFS (macOS).
• Upgrade considerations: check hardware compatibility, backup first, verify app/driver compatibility, ensure
sufficient free space.
EXAM TIP: A clean install wipes the drive; an in-place upgrade preserves user data/settings — know which scenario
calls for which.
1.3 Features of Microsoft Windows Editions
Feature
Home
Pro
Pro for Workstations
Enterprise
BitLocker
No
Yes
Yes
Yes
Remote Desktop (host)
No
Yes
Yes
Yes
Group Policy Editor
No
Yes
Yes
Yes
Domain Join
No
Yes
Yes
Yes
Max RAM
128 GB
2 TB
6 TB
6 TB
BranchCache/AppLocke
r
No
No
No
Yes
1.4 macOS & Linux Features and Tools
• macOS tools: Finder, Spotlight (search), Time Machine (backup), Disk Utility, Force Quit, Terminal, System
Settings, Keychain Access, FileVault (full-disk encryption), Screen Sharing, iCloud, Migration Assistant, Boot
Camp.
• macOS gestures: multi-touch trackpad gestures, Mission Control, Launchpad, Dock.
• Linux tools: shell/terminal, package managers (apt, yum, dnf, pacman), file editors (vi/vim, nano).
Common Linux commands:
Command
Purpose
ls
list directory contents
pwd
print working directory
cd
change directory
cp / mv / rm
copy / move / remove files
chmod
change file permissions (rwx)
chown
change file owner/group
ps / top
view running processes
grep
search text within files
sudo
run command as superuser
apt / yum / dnf
install/update packages
man
display manual/help for a command
EXAM TIP: chmod 755 = owner rwx, group r-x, other r-x. Memorize: read=4, write=2, execute=1 (added together).
1.5 Application Installation & Management
• System requirements: check RAM, storage, OS version, drivers, and dependencies before installing.
• Distribution methods: physical media, downloadable/ISO, app store (Microsoft Store, App Store, Play Store),
enterprise deployment (SCCM/Intune, MDM).
• Other considerations: impact on device (storage/battery/network), impact to network (bandwidth), impact to
operation (compatibility with legacy apps).
1.6 Cloud-Based Productivity Tools
• Document/spreadsheet/presentation software: Microsoft 365, Google Workspace (cloud-native, real-time
collaboration, auto-save/version history).
• Cloud file storage: OneDrive, Google Drive, iCloud, Dropbox — sync clients, selective sync, shared links.
• Collaboration: Teams, Slack, video conferencing platforms — screen sharing, chat, calendar integration.
1.7 Microsoft Windows Networking Features
• Workgroup vs. Domain: Workgroup = peer-to-peer, local accounts, best for ≤20 PCs (SOHO); Domain =
centralized Active Directory, single sign-on, GPOs.
• HomeGroup (deprecated) replaced by simpler sharing in modern Windows.
• Network shares: mapped drives, administrative shares (C$, ADMIN$), UNC paths (\\server\share).
• Network types: Public, Private, Domain profile — controls firewall behavior/discoverability.
• Firewall settings: inbound/outbound rules, exceptions, port configuration.
• Configuring an alternative IP address: static IP, DNS, subnet mask, default gateway; APIPA (169.254.x.x)
indicates DHCP failure.
• VPN and proxy settings for remote connectivity.
• Wireless networking: SSID, WPA2/WPA3 configuration, connecting/troubleshooting adapters.
EXAM TIP: An IP address in the 169.254.x.x range (APIPA) means the client could not reach a DHCP server — check
the DHCP server/network path first.
1.8 Application Installations and Configurations
• System requirements for applications: 32-bit vs. 64-bit, dedicated GPU, RAM, storage type (SSD vs HDD),
internet connectivity for licensing/activation.
• Installation methods: local (USB/optical), network-based, cloud-based.
• Other considerations: licensing (single-use, volume, subscription), storage, security (source verification,
digital signatures).
1.9 Common OS Features and Tools (Windows)
Tool
Purpose
Task Manager
View/end processes, startup apps, performance (CPU/RAM/GPU/disk),
users, services
Device Manager
View/update/roll back/disable drivers; resolve resource conflicts
Disk Management
Partition, format, shrink/extend, assign drive letters, initialize new disks
Event Viewer
Review Application/Security/System logs for errors and warnings
services.msc
Start/stop/configure Windows services and startup type
msconfig (System Configuration)
Boot options, services, startup items (legacy)
Tool
Purpose
regedit
Edit the Windows Registry (HKLM, HKCU, etc.) — use with caution,
back up first
Control Panel / Settings app
Legacy vs. modern configuration interfaces
MMC (Microsoft Management
Console)
Container for admin snap-ins (Device Mgr, Disk Mgmt, etc.)
Performance Monitor / Resource
Monitor
Detailed real-time and logged performance metrics
Group Policy Editor (gpedit.msc)
Configure local/domain security & user policies
Indexing Options
Manage Windows Search index locations
EXAM TIP: Know which tool solves which problem: driver conflict → Device Manager; service won't start →
services.msc; app crash history → Event Viewer.
1.10 Windows Settings
• Time & Language, Update & Security, Accounts, Devices, Network & Internet, Personalization, Apps,
Privacy — modern Settings app categories replacing most Control Panel functions.
• Ease of Access / Accessibility — Narrator, Magnifier, high contrast, sticky keys.
• Windows Update: quality vs. feature updates, pause updates, update history, WSUS in enterprise
environments.
1.11 Windows OS Files, Folders, and Commands
Command
Purpose
dir
list directory contents
cd / chdir
change directory
md / mkdir
make new directory
rmdir / rd
remove directory
copy / xcopy / robocopy
copy files (robocopy = robust, resumable copy)
del
delete file(s)
format
format a drive/partition
diskpart
advanced disk/partition management (CLI)
chkdsk
check and repair file system errors
sfc /scannow
scan and repair protected system files
DISM
repair the Windows image/component store
ipconfig /all, /release, /renew, /flushdns
view/release/renew IP config, clear DNS cache
ping / tracert / netstat / nslookup
connectivity test / trace route / connections / DNS lookup
net use / net user
map network drives / manage local user accounts
gpupdate /force
immediately reapply Group Policy
shutdown /r /t 0
restart immediately
taskkill / tasklist
end / list running processes from CLI
EXAM TIP: sfc /scannow checks core system files; DISM repairs the underlying Windows image that sfc pulls from —
run DISM first if sfc reports it 'could not fix' errors.
1.12 Windows OS: Control Panel & Boot Recovery
• Advanced Startup Options (WinRE): Startup Repair, System Restore, System Image Recovery, Command
Prompt, Uninstall Updates, UEFI Firmware Settings, Safe Mode.
• Safe Mode variants: Safe Mode, Safe Mode with Networking, Safe Mode with Command Prompt.
• Boot Configuration Data (BCD): managed via bcdedit or msconfig's Boot tab.
• System Restore: reverts system files/settings/registry to a restore point (does not affect personal files).
EXAM TIP: System Restore ≠ backup: it rolls back system state/settings, not personal documents.
2.0 Security (28%)
2.1 Physical Security Measures
• Access control: badge readers, biometrics (fingerprint, retina, facial), locking racks/cabinets, mantraps,
access control vestibules.
• Video/monitoring: CCTV/security cameras, motion sensors.
• Other: door locks (key, cipher, smart), guards, alarm systems, asset tags, cable locks (laptops),
privacy/anti-glare screens, key fobs, USB port locks.
2.2 Logical Security Concepts
• AAA: Authentication (who you are), Authorization (what you can access), Accounting (logging actions).
• MFA factors: something you know (password/PIN), something you have (token/smart card), something you
are (biometric), somewhere you are (geolocation).
• Principle of least privilege: grant only the minimum access needed.
• Access control lists (ACLs), zero trust, mobile device management (MDM), certificates, directory
permissions, VPN, encryption (full disk, file-level), hashing.
• Firewalls (host-based) and antivirus/anti-malware as endpoint controls.
EXAM TIP: Least privilege and zero trust are frequently tested concepts — remember: zero trust means 'never trust,
always verify,' regardless of network location.
2.3 Wireless Security Protocols & Authentication
Protocol
Notes
WEP
Obsolete/insecure — never use
WPA
Improved over WEP, uses TKIP — still weak, deprecated
WPA2
AES/CCMP encryption — long-time standard
WPA3
Current standard — SAE replaces PSK handshake, stronger against offline attacks
802.1X / RADIUS
Enterprise authentication — per-user credentials via a AAA server
EAP / PEAP
Extensible Authentication Protocol methods used with 802.1X
EXAM TIP: WPA2/WPA3-Personal use a Pre-Shared Key (PSK); WPA2/WPA3-Enterprise use 802.1X with a RADIUS
server for per-user auth — know the distinction.
2.4 Malware Types, Detection, Removal, Prevention
• Types: virus, worm (self-replicating, no host file needed), trojan (disguised as legit software), ransomware
(encrypts data for payment), keylogger, rootkit (kernel-level, hides from OS), spyware, cryptomining malware,
boot sector virus, fileless malware.
• Detection/removal tools: anti-malware/antivirus (signature + heuristic scanning), Windows Defender, rootkit
removal (may require boot media), pre-boot scans.
• 7-step malware removal process (know this order!):
1. Investigate/verify malware symptoms → 2. Quarantine infected system → 3. Disable System Restore → 4.
Remediate (update AV, scan/remove) → 5. Schedule scans and run updates → 6. Enable System Restore, create
restore point → 7. Educate the end user
EXAM TIP: This 7-step sequence is a classic exam question — memorize the exact order, especially that System
Restore is disabled BEFORE remediation and re-enabled AFTER.
2.5 Social Engineering, Threats, and Vulnerabilities
• Phishing — fraudulent email; spear phishing — targeted at a specific person; whaling — targets executives.
• Vishing — voice/phone-based phishing; smishing — SMS-based phishing.
• Shoulder surfing — visually observing credentials; tailgating/piggybacking — following someone through a
secured door.
• Impersonation, dumpster diving, pretexting, watering hole attack, evil twin (rogue AP mimicking legit
SSID).
• Threats/vulnerabilities: zero-day, DDoS, on-path (man-in-the-middle), brute force, dictionary attack, insider
threat, non-compliant systems (unpatched), zombie/botnet, SQL injection, cross-site scripting.
EXAM TIP: Social engineering exploits human trust, not technical flaws — the fix is user education and verification
procedures, not just software.
2.6 SOHO Wired/Wireless Security
• Change default credentials on routers/APs immediately.
• Disable unused ports/services — UPnP, WPS (vulnerable to brute force), remote administration.
• Firmware updates, MAC filtering, disabling SSID broadcast (obscurity only, not real security), guest
network isolation.
• Content filtering / parental controls, port forwarding vs. port triggering, screened subnet (DMZ) for
SOHO edge devices.
• Firewall rules: allow/deny lists, stateful vs. stateless inspection.
2.7 Browser Security Settings
• Certificate/HTTPS validation, trusted/restricted zones (IE/Edge legacy), pop-up blockers,
private/incognito browsing.
• Clearing cache/cookies/history, extensions/plug-in management, password managers, ad blockers.
• Secure connection indicators: padlock icon, certificate warnings — never bypass invalid cert warnings on
sensitive sites.
2.8 Windows OS Security Settings
• User account types: Administrator (full control) vs. Standard user (limited, run apps/change some settings but
not system-wide changes).
• NTFS permissions: Full Control, Modify, Read & Execute, List Folder Contents, Read, Write — permissions
are cumulative, but explicit Deny always overrides Allow.
• Share permissions: Full Control, Change, Read — when share and NTFS permissions conflict, the MOST
RESTRICTIVE wins.
• Local Security Policy, User Account Control (UAC), BitLocker/BitLocker To Go, Windows Defender
Firewall, Windows Hello (biometric sign-in).
• EFS (Encrypting File System) — file/folder-level encryption tied to the user account.
EXAM TIP: Classic exam scenario: a user has Share=Read and NTFS=Full Control accessing over the network →
effective access is Read (most restrictive of the two applies for network access).
3.0 Software Troubleshooting (23%)
Core Process The CompTIA Troubleshooting Methodology
1. Identify the problem → 2. Establish a theory of probable cause (question the obvious) → 3. Test the theory to
determine cause → 4. Establish a plan of action & identify potential effects → 5. Implement the solution or
escalate → 6. Verify full system functionality & implement preventive measures → 7. Document findings, actions,
and outcomes.
EXAM TIP: This 6-step (sometimes listed as 7-step) methodology appears in nearly every troubleshooting scenario
question — memorize the exact order, it's tested directly.
3.1 Common Windows OS Issues
• Blue Screen of Death (BSOD)/Stop errors — often driver or hardware related; check Event Viewer/Reliability
Monitor.
• Slow performance, freezing, application crashes — check Task Manager for resource hogs, background
processes.
• Boot problems: missing OS, boot device not found, corrupt boot files — use WinRE/Startup Repair, bootrec
commands.
• Service/application won't start — check services.msc, dependencies, Event Viewer.
• Time drift, print spooler service errors, USB controller resets, blue/black screen, no OS found, RAID
failure.
• High resource utilization (CPU/RAM/disk/network) — use Task Manager / Resource Monitor to isolate the
process.
3.2 Common Mobile OS & App Issues
• App fails to launch/close/update, high resource usage, battery drain, overheating.
• Connectivity issues: Wi-Fi, Bluetooth, cellular data — toggle radios, check APN settings, reset network
settings.
• Screen/touch issues, GPS not functioning, sync issues (contacts/calendar/email).
• Common fixes: force close app, restart device, clear cache, reinstall app, update OS, factory reset (last
resort).
3.3 Mobile OS & App Security Issues
• Signs of compromise: unexpected data usage spikes, unauthorized account access, unexpected app
permission requests, rapid battery drain, pop-ups, unauthorized purchases.
• Unauthorized location tracking, unauthorized camera/mic activation, high network traffic, leaked
personal files/data.
• Remediation: restrict app permissions, uninstall malicious apps, factory reset if compromised, update
OS/apps, enable remote wipe via MDM.
3.4 Common PC Security Issues
• Symptoms of infection: pop-ups, browser redirection, security alerts disabled, slow performance,
unwanted/renamed system files, unexplained new processes, disappearing files, file permission changes.
• Certificate warnings, OS update failures, rogue antivirus, ransomware note/lock screen, unusual
network traffic.
• Response: isolate the machine from the network, run the 7-step malware removal process (see 2.4), verify
functionality, document.
EXAM TIP: If a machine shows ransomware symptoms, the FIRST step is to isolate it from the network to stop lateral
spread — don't power it off if forensic evidence preservation matters, but for the exam, containment comes first.
Bridges into 4.0 Troubleshooting Documentation & Support
• Track symptoms precisely, note error codes/messages, and record every action taken before escalating.
• Use built-in diagnostic tools first (Event Viewer, Reliability Monitor, Resource Monitor) before third-party utilities.
4.0 Operational Procedures (21%)
4.1 Documentation & Support Systems Best Practices
• Ticketing systems: user info, device info, description of problem, categorization, severity/priority, escalation
levels, clear/concise notes, resolution.
• Asset management: inventory lists, database/system of record, asset tags/IDs, procurement life cycle,
warranty tracking.
• Types of documents: knowledge base/articles, SOPs (standard operating procedures), network diagrams,
regulatory/compliance policy, splash screens/acceptable use policy (AUP), incident reports.
4.2 Change Management Procedures
• Purpose: a documented process to reduce risk when altering systems/configurations.
• Key elements: requesting the change, purpose/scope of the change, risk analysis, plan for change, end-user
acceptance, change board approval, backout plan, sandbox/test environment before production, documentation
of changes.
EXAM TIP: Always know the difference between a 'backout plan' (how to revert if a change fails) and 'risk analysis'
(evaluating impact before approval) — both are commonly quizzed.
4.3 Workstation Backup and Recovery Methods
Backup Type
Description
Restore Speed
Full
Backs up all selected data every time
Fastest restore, slowest backup,
most storage
Incremental
Backs up changes since the LAST backup (full or
incremental)
Slower restore (needs full + all
increments)
Differential
Backs up changes since the LAST FULL backup
Faster restore than incremental
(needs full + latest differential)
Synthetic full
Combines full + incrementals into a new full without
re-reading source
Fast, reduces backup window
• 3-2-1 backup rule: 3 copies of data, on 2 different media types, with 1 copy off-site.
• Backup testing: periodically verify restores actually work.
• Cloud backup vs. local (NAS/external drive), image-level vs. file-level backup, version
history/snapshots.
EXAM TIP: Restoring from incremental backups requires the last full backup PLUS every incremental since — that's
why incremental restores take longer than differential restores.
4.4 Common Safety Procedures
• ESD (electrostatic discharge) prevention: anti-static wrist straps, anti-static mats, self-grounding, keeping
components in anti-static bags.
• Equipment grounding, proper power handling (UPS, surge protectors), proper component
handling/storage.
• Toxic waste handling: batteries, toner/ink cartridges, CRTs — follow local disposal regulations, use SDS
(Safety Data Sheets).
• Personal safety: disconnect power before repairs, lifting technique, fire safety/fire extinguisher class (Class C
for electrical), cable management to avoid trip hazards.
EXAM TIP: Class C fire extinguishers are for electrical fires — never use water on live electrical equipment.
4.5 Environmental Impacts & Controls
• MSDS/SDS (Safety Data Sheets): document proper handling/disposal of hazardous materials.
• Temperature, humidity, and airflow control in server/equipment rooms; proper battery/toner disposal.
• Recycling/repurposing of e-waste, compliance with local government regulations.
4.6 Prohibited Content/Activity, Privacy, Licensing, Policy
• Incident response: first response = report through proper channels, preserve data/device (chain of custody),
document the scene.
• Chain of custody: tracking evidence handling to maintain its integrity for legal purposes.
• Licensing: open-source vs. commercial, personal vs. enterprise/volume licenses, EULA (End User License
Agreement), DRM.
• Regulated data: PII (Personally Identifiable Information), PHI (Protected Health Information/HIPAA), PCI-DSS
(payment card data), GDPR (EU data privacy).
EXAM TIP: Chain of custody questions test whether you preserve evidence and document who handled it, in order,
without altering it — think 'legal integrity.'
4.7 Communication Techniques & Professionalism
• Be on time (or notify if late), maintain a positive attitude, avoid jargon with end users, actively listen
(take notes, ask clarifying questions, avoid interrupting).
• Be culturally sensitive, set/meet expectations, offer repair/replacement options, follow up with
customers, deal appropriately with confidential materials.
• Avoid distractions: no personal calls/texting in front of a customer, no talking to co-workers while helping a
customer.
• Difficult situations: avoid arguing, avoid being judgmental, don't dismiss customer problems, avoid being
condescending, don't act unsure/nervous — maintain confidence and professionalism.
EXAM TIP: Soft-skill/communication questions are scenario-based and easy points if you remember: never blame the
customer, never minimize the issue, always set clear expectations.
4.8 Basics of Scripting
• Script file extensions: .bat (Windows batch), .ps1 (PowerShell), .vbs (VBScript), .sh (Linux/bash shell), .py
(Python), .js (JavaScript).
• Basic script constructs: variables, loops (for/while), conditionals (if/then), comments.
• Use cases: automating repetitive tasks, restarting services, mapping drives, gathering diagnostic info, initiating
updates.
• Considerations when writing/running scripts: unintentionally changing system settings, browser/system
crashes from malformed scripts, data exfiltration risk from untrusted scripts, execution policy restrictions, always
test scripts in a controlled environment first.
EXAM TIP: Know the file extensions by OS: .bat/.ps1 = Windows, .sh = Linux/macOS, .py and .js are cross-platform.
4.9 Remote Access Technologies
• RDP (Remote Desktop Protocol) — Windows-native GUI remote access, port 3389.
• VNC (Virtual Network Computing) — cross-platform GUI remote access.
• VPN — encrypted tunnel for secure remote network access.
• SSH (Secure Shell) — encrypted CLI remote access, port 22.
• Remote monitoring and management (RMM), Microsoft Remote Assistance/Quick Assist, third-party
tools (TeamViewer, AnyDesk), in-band vs. out-of-band management.
• Security considerations: MFA on remote tools, VPN before RDP where possible, session timeouts, encrypted
connections only.
4.10 Basics of Artificial Intelligence (AI)
• AI use cases in IT support: chatbots for tier-1 triage, predictive maintenance, automated ticket categorization,
knowledge base search assistance.
• Considerations: data privacy when using AI tools with sensitive info, accuracy/hallucination risk, need for
human review of AI-generated output, organizational AI usage policy compliance.
Quick-Reference Cheat Sheet
Ports to Know
Port
Protocol
21
FTP
22
SSH
23
Telnet
25
SMTP
53
DNS
80
HTTP
443
HTTPS
389
LDAP
3389
RDP
Troubleshooting Methodology (memorize in order)
• 1. Identify the problem
• 2. Establish a theory of probable cause
• 3. Test the theory
• 4. Establish a plan of action
• 5. Implement the solution
• 6. Verify full system functionality + preventive measures
• 7. Document findings/actions/outcomes
Malware Removal (memorize in order)
• 1. Investigate and verify symptoms
• 2. Quarantine infected system
• 3. Disable System Restore
• 4. Remediate (update + scan/remove)
• 5. Schedule scans and run updates
• 6. Enable System Restore + create restore point
• 7. Educate the end user
Permissions Rules
• NTFS permissions are cumulative across group memberships — EXCEPT explicit Deny always wins.
• When accessing a resource over the network, the MOST RESTRICTIVE of Share vs. NTFS permissions
applies.
• Moving a file within the same NTFS volume keeps its original permissions; copying (or moving to a different
volume) inherits the destination folder's permissions.
Final Week Study Plan
• Days 1-2: Re-read Domain 1.0 (Operating Systems) and drill Windows tools/commands.
• Days 3-4: Re-read Domain 2.0 (Security) — focus on malware removal steps and permissions rules.
• Day 5: Domain 3.0 (Software Troubleshooting) — memorize the 7-step methodology cold.
• Day 6: Domain 4.0 (Operational Procedures) — backup types, safety, and professionalism scenarios.
• Day 7: Full practice exam under timed conditions (90 minutes), review every missed question.
Good luck! Review this guide alongside official CompTIA objectives (V15) and hands-on lab practice for best results.