Jensen IT Notes

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IT notes for practical troubleshooting

Beginner-friendly writeups for support tickets, network symptoms, Windows fixes, and useful field habits.

Networking & Homelab

How DHCP Works in a Small Network

A practical beginner explanation of DHCP leases, scopes, gateways, DNS settings, and small network troubleshooting.

Network+DHCPNetworkingHomelab
Networking & Homelab

Subnetting Basics for Beginners

A practical beginner explanation of subnets, masks, and why subnetting matters in IT support learning.

Network+SubnettingNetworkingBeginner IT Support
Networking & Homelab

VLAN Basics for Homelab Beginners

A beginner-friendly explanation of VLANs and why they are useful in homelab and small network practice.

Network+VLANHomelabNetworkingSwitching
IT Support & Troubleshooting

Malware Basics for IT Support Beginners

A practical beginner overview of malware types, infection signs, basic response steps, and when to escalate.

CompTIA A+SecurityMalwarePhishing

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