🧠 Final Revision Master Sheet

Exam ke 1 din pehle padhne ke liye — ultra-short notes, sirf KEY POINTS!

RAM → SO-DIMM (laptop) | DIMM (desktop)
DDR4 ≠ DDR3 ≠ DDR5 (physically different!)
Storage: NVMe > SATA SSD > HDD (speed)
M.2 2280 = most common laptop SSD (22mm × 80mm)
Battery: Li-Ion (standard) | Li-Poly (premium) | Swelling = DANGER!
Thunderbolt = USB-C shape + ⚡ symbol (Data+Display+Power)
IMAP (993) = Sync all devices | POP3 (995) = Download & delete
SMTP = Send email (25/587) | MDM = Remote wipe, lock, policies
2.4 GHz = Range | 5 GHz = Speed | 6 GHz = Most speed
Bluetooth: 10m (v4) | 40m (v5) | NFC: 4cm

🔢 Port Numbers — Quick Reference

20/21FTP
22SSH
23Telnet
25SMTP
53DNS
67/68DHCP
80HTTP
110POP3
143IMAP
161/162SNMP
389LDAP
443HTTPS
445SMB
587SMTPS
636LDAPS
993IMAPS
995POP3S
3389RDP
5900VNC

🏆 Exam Day Tips

⏰ Before Exam:

• 8 hours sleep, halka naashta, valid ID, 15 min early

• Relax — aapne preparation ki hai! 💪

📝 During Exam:

• PBQs SKIP karo pehle → MCQs solve → PBQs baad mein

• 1 min/question | FLAG difficult ones | NEVER leave blank

🎯 Strategy:

• "BEST" answer = most professional/secure

• "FIRST" step = usually Identify or Ask

💡 Remember:

• Trust first instinct (usually correct!)

• Eliminate obviously wrong answers first