Core 1 Hardware
13-28%of exam
Core 1 Networking
11-23%of exam
Core 2 Systems
23-28%of exam
Security + Ops
21-28%of exam
Quick Facts
- Exams
- 220-1201 + 1202
- Questions
- Max 90 each
- Time
- 90 min each
- Pass C1
- 675/900
- Pass C2
- 700/900
- Format
- MCQ + PBQ
- Skill
- Troubleshoot first
Laser Process
Process -> Charge -> Expose -> Develop
Transfer nextFuse tonerClean drumLaser only
RAM vs Storage
RAM
- Volatile
- Active work
- Fast
Storage
- Persistent
- Saved data
- Slower
Work vs save
Mobile Devices
- Touchpad
- Pointer input
- Digitizer
- Touch layer
- Dock
- Port expansion
- NFC
- Near-field pairing
- Bluetooth
- Short-range wireless
- Hotspot
- Shared cellular
HDD vs SSD
HDD
- Mechanical
- Cheaper
- Moving parts
SSD
- Flash
- Faster
- No moving
Spinning vs flash
Hardware
- CPU
- Executes instructions
- RAM
- Volatile memory
- Motherboard
- Component backbone
- PSU
- Power supply
- GPU
- Graphics processing
- TPM
- Hardware trust
Storage
- HDD
- Spinning disk
- SSD
- Flash storage
- NVMe
- PCIe storage
- SATA
- Drive interface
- RAID 0
- Stripe speed
- RAID 1
- Mirror redundancy
Printers
- Laser
- Toner process
- Inkjet
- Liquid ink
- Thermal
- Heat paper
- Impact
- Ribbon strike
- Fuser
- Bonds toner
- Duplex
- Two-sided print
Mail Ports
SMTP 25 | POP3 110 | IMAP 143
SMTP sendsPOP downloadsIMAP syncsHTTPS 443
NAT vs DHCP
NAT
- Translates addresses
- Internet sharing
- Router
DHCP
- Leases addresses
- Client config
- Scope
Translate vs assign
Network Triage
- 169.254 IP→Check DHCP
- No name→Check DNS
- No gateway→Check router
- Weak Wi-Fi→Check channel
- No link→Check cable
- VPN fails→Check creds
Ports
- 20/21
- FTP
- 22
- SSH
- 25
- SMTP
- 53
- DNS
- 80
- HTTP
- 110
- POP3
- 143
- IMAP
- 443
- HTTPS
IMAP vs POP3
IMAP
- Server sync
- Port 143
- Multi-device
POP3
- Download mail
- Port 110
- Single-client
Sync vs download
Networking
- DHCP
- Leases IP
- DNS
- Names to IP
- NAT
- Address translation
- APIPA
- 169.254 fallback
- SSID
- Wireless name
- VPN
- Encrypted tunnel
Cloud
- IaaS
- Virtual infrastructure
- PaaS
- Managed platform
- SaaS
- Hosted app
- VDI
- Virtual desktop
- Hypervisor
- Runs VMs
- Snapshot
- Point copy
UEFI vs BIOS
UEFI
- Modern firmware
- Secure Boot
- GPT
BIOS
- Legacy firmware
- MBR
- Older systems
Modern vs legacy
Boot Triage
- No power→Check PSU
- POST beeps→Check hardware
- No OS→Check boot order
- Slow boot→Check startup
- Driver issue→Device Manager
- Disk issue→Disk Mgmt
Windows Tools
- Device Mgr
- Driver status
- Disk Mgmt
- Partitions
- Event Viewer
- System logs
- Task Manager
- Processes
- Services
- Daemon control
- gpedit
- Local policy
Troubleshooting Steps
Identify -> Theory -> Test -> Plan
Implement fixVerify functionDocument outcomeEscalate if needed
Malware Triage
- Suspect malware→Quarantine host
- Need evidence→Preserve logs
- Remove threat→Scan offline
- Fix gaps→Patch system
- Restore data→Clean backup
- Prevent repeat→User training
Security
- MFA
- Extra factor
- BitLocker
- Disk encryption
- Firewall
- Traffic filter
- EDR
- Endpoint detection
- Phishing
- Fake lure
- Quarantine
- Isolate file
Procedures
- Change
- Controlled update
- Ticket
- Work record
- Backup
- Recovery copy
- ESD strap
- Static protection
- SDS
- Safety sheet
- Chain custody
- Evidence tracking
Common Traps
DHCP mixup
DHCP assigns IP ≠ DNS resolves names
Memory mixup
RAM is volatile ≠ Storage persists
Firmware mixup
UEFI is modern ≠ BIOS is legacy
Mail mixup
SMTP sends mail ≠ IMAP syncs mail
Malware order
Quarantine first ≠ Restore later
Last Minute
- 1.Core 1 = devices/network/hardware
- 2.Core 2 = OS/security/ops
- 3.DHCP gives IP
- 4.DNS gives names
- 5.NAT translates addresses
- 6.RAM loses power
- 7.SSD has no moving parts
- 8.UEFI supports Secure Boot
- 9.SMTP sends email
- 10.IMAP syncs email
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