Bistech Computer WORLD

What Does the IT Department Really Do?

Most people only notice IT when something stops working. But behind the scenes, IT teams keep businesses running smoothly every single day.

Without IT, here’s what happens:
🔴 Server down → no files, no systems.
🔴 Internet outage → meetings & communication stop instantly.
🔴 Slow systems → productivity grinds to a halt.
🔴 No software installs → projects get delayed.
🔴 No backups → critical data is lost.
🔴 No security → threats go undetected, leaving the business vulnerable.

In every crisis, the first call is always IT.
They are the silent problem-solvers, firefighters, and guardians of data and systems.

💻 “IT does nothing? Without IT, nothing works.” 🙏🏻

IT support, or Information Technology support, ensures computer systems and networks run smoothly. It's about solving technical problems for users, protecting data, and maintaining systems.

*Key Features of IT Support:*

- *Immediate Assistance*: Quick solutions for common technical issues
- *Remote Access*: IT support teams can access devices remotely to resolve issues
- *Network Management*: Setting up and maintaining secure and reliable internet connections
- *Data Backup and Recovery*: Protecting valuable information from loss or damage
- *Cybersecurity Solutions*: Protecting devices and data from threats.

🚀🚀 Waht is DHCP and how it’s working?🚀 🚀

Dynamic Host Configuration Protocol, is a network protocol that automates the assignment of IP addresses and other essential network configurations to devices (clients) on a network. This automation eliminates the need for manual configuration by network administrators, streamlining network management and reducing errors.

working:
DHCP operates on a client-server model and follows a four-step process known as DORA:

Discover: When a device connects to a network, it broadcasts a DHCPDISCOVER message to locate available DHCP servers.

Offer: A DHCP server responds with a DHCPOFFER message, proposing an IP address lease and providing other configuration details like subnet mask, default gateway, and DNS servers.

Request: The client replies with a DHCPREQUEST message, indicating its acceptance of the offered parameters.

Acknowledge: The server finalizes the process by sending a DHCPACK message, confirming the lease and associated configurations.

Installing Active Directory on Windows Server—It’s Easier Than You Think!

Setting up Active Directory (AD) on a Windows Server is a key step in building a networked IT environment. Here’s the simple process:

➡️ 1. Install the AD DS role
Open Server Manager → Add roles and features → Select Active Directory Domain Services.

➡️ 2. Promote the server to a Domain Controller
After installation, click the alert and choose Promote this server → Create a new forest and set your domain name.

➡️ 3. Configure settings
Set the Directory Services Restore Mode (DSRM) password and review DNS options (it can install DNS automatically).

➡️ 4. Let it restart
Once promoted, the server will reboot and become your first Domain Controller!

Ways to Fix Active Directory Trust Relationship Issues

🔹 Method 1: Disjoin & Rejoin Domain (dsjoin)
1️⃣ Log in as local admin.
2️⃣ Run: dsjoin /leave (to disjoin).
3️⃣ Restart, then rejoin:

dsjoin /domain DomainName /userD DomainAdminUser /passwordD *

4️⃣ Restart again.

🔹 Method 2: Repair Trust via PowerShell
1️⃣ Log in as local admin.
2️⃣ Run:

Test-ComputerSecureChannel -Repair -Credential DomainName\Administrator

3️⃣ Restart.

🔹 Method 3: Reset Computer Password (PowerShell)
1️⃣ Log in as local admin.
2️⃣ Run:

Reset-ComputerMachinePassword -Server DomainServer -Credential DomainName\Administrator

3️⃣ Restart.

🔹 Method 4: Reset Secure Channel (Netdom)
1️⃣ Log in as local admin.
2️⃣ Run:

netdom resetpwd /Server:DomainController /UserD:DomainAdmin /PasswordD:*

3️⃣ Restart.

🔹 Method 5: Delete & Recreate Computer in AD
1️⃣ Delete the computer object from Active Directory Users & Computers (ADUC).
2️⃣ Log in as local admin.
3️⃣ Run:

Remove-Computer -UnjoinDomainCredential DomainName\Administrator -PassThru -Verbose

4️⃣ Restart & rejoin using:

Add-Computer -DomainName "DomainName" -Credential DomainName\Administrator -Restart

🔹 Method 6: Check & Sync Time
1️⃣ Log in as local admin.
2️⃣ Run:

w32tm /resync

3️⃣ If needed, manually set time sync:

w32tm /config /manualpeerlist:"time.windows.com" /syncfromflags:manual /update

4️⃣ Restart.

Ways to Fix Active Directory Trust Relationship Issues

🔹 Method 1: Disjoin & Rejoin Domain (dsjoin)
1️⃣ Log in as local admin.
2️⃣ Run: dsjoin /leave (to disjoin).
3️⃣ Restart, then rejoin:

dsjoin /domain DomainName /userD DomainAdminUser /passwordD *

4️⃣ Restart again.

🔹 Method 2: Repair Trust via PowerShell
1️⃣ Log in as local admin.
2️⃣ Run:

Test-ComputerSecureChannel -Repair -Credential DomainName\Administrator

3️⃣ Restart.

🔹 Method 3: Reset Computer Password (PowerShell)
1️⃣ Log in as local admin.
2️⃣ Run:

Reset-ComputerMachinePassword -Server DomainServer -Credential DomainName\Administrator

3️⃣ Restart.

🔹 Method 4: Reset Secure Channel (Netdom)
1️⃣ Log in as local admin.
2️⃣ Run:

netdom resetpwd /Server:DomainController /UserD:DomainAdmin /PasswordD:*

3️⃣ Restart.

🔹 Method 5: Delete & Recreate Computer in AD
1️⃣ Delete the computer object from Active Directory Users & Computers (ADUC).
2️⃣ Log in as local admin.
3️⃣ Run:

Remove-Computer -UnjoinDomainCredential DomainName\Administrator -PassThru -Verbose

4️⃣ Restart & rejoin using:

Add-Computer -DomainName "DomainName" -Credential DomainName\Administrator -Restart

🔹 Method 6: Check & Sync Time
1️⃣ Log in as local admin.
2️⃣ Run:

w32tm /resync

3️⃣ If needed, manually set time sync:

w32tm /config /manualpeerlist:"time.windows.com" /syncfromflags:manual /update

4️⃣ Restart.

🚀 These methods should help fix most Active Directory trust issues! 🚀

1. Role of Desktop Support?
Install, maintain, and troubleshoot user systems.
2. What’s an IP address?
Unique device identifier on a network.
3. Check IP in Windows?
ipconfig in CMD.
4. What is DNS?
Resolves domain names to IP addresses.
5. Join system to domain?
This PC > Properties > Change Settings > Domain.
6. What is DHCP?
Auto-assigns IP addresses.
7. Check system info?
msinfo32 in Run.
8. What is Safe Mode?
Diagnostic mode with basic drivers.
9. Access Safe Mode?
F8 / Shift + Restart > Troubleshoot.
10. Static IP?
Manually assigned IP.
11. LAN vs WAN?
Local vs wide area network.
12. Map network drive?
This PC > Map network drive.
13. BSOD?
Blue screen system crash.
14. Troubleshoot BSOD?
Note error code, check drivers & hardware.
15. Reset AD password?
ADUC > Right-click user > Reset.
16. Print spooler?
Manages print job queue.
17. Restart print spooler?
services.msc > Print Spooler > Restart.
18. Flush DNS?
ipconfig /flushdns
19. What is RDP?
Remote Desktop Protocol.
20. RDP port?
3389
21. Proxy server?
Mediates client-server requests.
22. Install software remotely?
SCCM / GPO / PDQ Deploy.
23. Event Viewer use?
Check system/app logs.
24. Windows Update?
OS patches & drivers.
25. Fix a slow PC?
Check startup, RAM, disk, and malware.
26. User profile?
Personal settings & files.
27. Backup Outlook emails?
Export to .pst.
28. Patch?
Software fix/update.
29. chkdsk command?
Check & fix disk errors.
30. Workgroup vs Domain?
Peer-to-peer vs centralized.

Congratulations on another year of being a perfect couple. May every day be as memorable as your wedding day. Have a joyous wedding anniversary ```RCCG~COM~MEDIA~UNIT``

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