A network support specialist keeps the network working and fixes it when it breaks. You will spend your days working out why someone cannot reach a file server, a Wi-Fi network drops, or a VPN will not connect, then fixing it and writing down what you did. The path has three stages. First you learn how data actually moves (IP addresses, DNS, DHCP, switches, routers). Then you learn to troubleshoot in a structured way and manage users, permissions and firewalls, which gets you hired. Finally you move into routing protocols such as BGP, cloud networking, automation and security, which prepares y
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Every stage from beginner to expert, with lessons, practice drills, projects, interview questions and free resources. Free with a Rolearch account.
Stage 1 of 3 · about 10 weeks
Understand how a network works end to end and use basic tools to check whether a connection is healthy.
Networking fundamentals: OSI/TCP-IP, IP addressing, subnetting
Every problem you will troubleshoot lives at some layer of the model. If you know that a cable fault is layer 1 and a wrong IP is layer 3, you know where to look first instead of guessing.
Core services: DNS, DHCP, NAT, and common protocols
Most 'the internet is down' tickets are really a DNS or DHCP problem. Knowing what each service does lets you tell them apart quickly.
Diagnostic tools: ping, traceroute, nslookup, netstat, Wireshark
These tools turn a vague complaint into evidence. They tell you whether the fault is the user's device, the local network, or somewhere beyond it.
Switches, routers and a first simulated lab
Reading about devices is not the same as configuring them. A simulator lets you make mistakes safely and see the result straight away.
Operating system basics: Windows, Linux and the command line
Your job tasks list Linux, macOS, Bash and PowerShell. Much of network support is done at a command prompt on a client or server.
Then 2 more stages (about 40 weeks in all) with lessons, drills, projects, 6 interview questions with strong answers and free resources.