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🔥 18 Essential CMD Commands Every Windows User Should Know!
Boost your tech skills with these powerful Windows commands 💻⚡
👇 Full list below 👇
1️⃣ dir — See Everything in a Folder
Syntax: dir
Example: dir C:\Users\Public
2️⃣ copy — Duplicate Files Instantly
Syntax: copy
Example: copy notes.txt D:\Backup\
3️⃣ ipconfig — Check Your Network Info
Syntax: ipconfig
Example: ipconfig /all
4️⃣ ping — Test Your Internet Connection
Syntax: ping
Example: ping google.com
5️⃣ chkdsk — Repair Disk Problems
Syntax: chkdsk /f
Example: chkdsk C: /f
6️⃣ net user — Manage User...

💻 Fix Wi-Fi Connection Issues in Windows!
Getting the dreaded “Can’t connect to this network” message? Try these quick troubleshooting steps:
✅ 1. Restart your PC and Router – Simple but effective!
✅ 2. Forget and Reconnect to the Network – Go to Wi-Fi settings → Select your network → Click Forget, then reconnect.
✅ 3. Run Network Troubleshooter – Settings → Network & Internet → Status → Network Troubleshooter.
✅ 4. Update Network Drivers – Device Manager → Network adapters → Update driver.
✅ 5. Reset Network Settings – Settings → Network & Internet → Advanced network settings →...

🔐 How HTTPS Works (Step-by-Step)
HTTPS = HTTP + TLS/SSL Security

It ensures secure communication between Client (Browser) and Server.

1️⃣ TCP Handshake (Connection Setup)
Before security, a reliable connection is needed:
Client → TCP SYN
Server → SYN + ACK
Client → ACK
✅ TCP connection established

2️⃣ Certificate Verification (Trust Building)
Client sends Client Hello
Server replies with:
Server Hello
SSL Certificate
Server Hello Done

🔍 Browser verifies:
Certificate Authority (CA)
Domain name
Expiry date

👉 Uses Asymmetric Encryption
Public Key (shared)
Private Key (server only)

3️⃣ Key Exchange (Security Setup)
Client generates a Session Key
Encrypts it...

1. Open Gemini
2. Upload your photo
3. Prompt

Use my uploaded photo (keep original face). A hyperrealistic, vertical surrealist editorial composition. A man closely resembling the man in the uploaded photo, emerges naturally from the screen of a modern premium smartphone held by a disembodied hand. His facial identity, skin texture, and proportions are fully realistic and unchanged. He is dressed in a vibrant, stylish outfit: a rich teal or deep cobalt blue t-shirt with premium fabric texture, paired with subtle color contrast details that feel modern and confident. The attire is bold but tasteful, designed to stand out...

DMVPN – Dynamic Multipoint Virtual Private Network 🔐🌐

DMVPN is a Cisco VPN technology designed to connect multiple branch sites securely using dynamic tunnels — without configuring point-to-point VPNs for every location.

Instead of managing hundreds of static tunnels, DMVPN builds them on demand.

How DMVPN actually works (no theory):

mGRE → Single tunnel interface, multiple dynamic peers

NHRP → Resolves private tunnel IPs to public WAN IPs

IPsec → Encrypts all traffic end-to-end

DMVPN Phases (know this for interviews):

Phase 1: Hub-and-Spoke (all traffic via hub)

Phase 2: Dynamic Spoke-to-Spoke tunnels

Phase 3: Optimized routing with NHRP redirect

Why...

🚨 Wi-Fi Hacking: The Silent Threat Inside Your Home & Office

Most people think Wi-Fi hacking only means “someone using your internet.”
That’s a dangerous myth.

In reality, a compromised Wi-Fi network can become a gateway to total digital destruction.

🔓 What REALLY Happens When Wi-Fi Gets Hacked?

Once an attacker gains access to your Wi-Fi, they can:

🔴 Intercept encrypted traffic using evil twin & MITM attacks
🔴 Steal passwords, OTPs, cookies & sessions
🔴 Monitor everything you type (banking, emails, private chats)
🔴 Inject malware & spyware into connected devices
🔴 Turn your network into a launchpad for...

🔥 Top Windows Run Commands You Should Know
Speed up your workflow with these essential commands.

Press Win + R and type:
1. shell:printersfolder – Printers
2. control admintools – Administrative Tools
3. netplwiz – Advanced User Accounts
4. msinfo32 – System Information
5. sdclt – Backup & Restore
6. credwiz – Credential Backup
7. fsquirt – Bluetooth File Transfer
8. calc – Calculator
9. certmgr.msc – Certificates Manager
10. colorcpl – Color Management
11. cmd – Command Prompt
12. compmgmt.msc – Computer Management
13. control – Control Panel
14. shrpubw – Shared Folder Wizard
15. recdisc – Create Repair...