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Nätverksteknik och datakommunikation

This training is for persons who want a secure foundation to stand on in the area of network and data communication. The training goes through terminology, how data networks are built, architectures, protocols and standards and puts them in a practical context to gain an understanding of how the various parts are connected and why we have the environment we have today.   This is a real hands-on course and you, together with our experts and your course friends, will work with several concrete solutions that you will have use of immediately when you are back at your workplace!   The goal of the course is for you to be able to take care of, troubleshoot and locate problems in the local network, as well as understand the terminology when communicating/discussing with third parties such as hosting companies, internet providers, etc. The course is focused on local networks and their connection to the outside world.



3 dagar

25900 kr

Target Audience

You need an introduction but at the same time a solid foundation to stand on before working as a network technician/administrator.

At completion of the course students will

  • have an understanding of terminology
  • understand the difference between bridges, switches and routers
  • have basic knowledge of configuration, maintenance, administration and security in networks.
  • know how addressing at different levels (MAC/IP) works in networks.
  • feel secure in your role at the company.
  • know how and in what steps data networks are built up.
  • basic understanding of protocols, architectures and standards.
  • know different products and players in the market.


No special prior knowledge is required

Contents of Networks and data communications

1. Overview - Networks and data communications

  • History of the Internet
  • Common terms and expressions

2. The building blocks of the network

  • Cable types/Connectors
  • Cross connection
  • Marking
  • Balanced

3. Introduction to TCP/IP, ARP

  • Brief overview of how data is sent between the course computer and server on the Internet.

4. LAN

  • Switch/hub
  • Bridge
  • Structure
  • Ethernet
  • Wireless connection

5. Ethernet 802.3

  • Standards
  • Restrictions
  • Flow Control
  • Modulation, Start sequences

6. Network architecture

  • The TCP/IP model
  • The OSI model, the different layers
  • Addressing
  • Network partitioning
  • Router information
  • TCP/IP/Ethernet/ARP

7. Configuration of network equipment

  • IP address, Netmask, Gateway, DNS
  • Printer
  • Windows
  • Linux
  • Mac

8. Configuration "office network"

  • DHCP
  • NAT (RFC1918)
  • Firewall
  • Wi-Fi
  • Router
  • (A) DSL modem

9. Troubleshooting

  • Gradually
  • Hardware related
  • Software related
  • Settings and useful commands

10. The structure of the Internet

  • Internet Service Providers (ISPs)
  • Whois (RIPE)
  • DNS (company name.se)
  • Peering, Transit, IX (Net node, AMIX)

11. Our most common connections

  • Fixed connection
  • DSL (ADSL, hDSL, xDSL, sDSL)
  • Internet via Cable TV (DOCSIS)
  • 3G/UMTS
  • Wi-Fi

Practical exercises   The course alternates theory with practical elements so that the participants will gain both the understanding and the idea behind how things work, but also the knowledge that they can do it themselves.   Some examples of laboratory work done during the course

  • Connect a physical network, connect network-based equipment and set up wireless access securely.
  • Configure a network according to given spec. (IP addresses, worms, gateway)
  • Look at network traffic, including network analyzer
  • Practical troubleshooting both in hardware and configuration.
  • Divide the network into multiple segments with VLANs

In the labs, you gain an understanding of commands such as ping, tracert/traceroute, arp, ipconfig/ifconfig, netstat and route.


  • ”Jag är väldigt nöjd med kursen och med läraren! Han var väldigt kunnig och pedagogisk”
  • ”Mycket bra utbildning, bra exempel och bra fart i utbildningen. Man kommer från den utbildningen med mer kunskap för att ta med i sitt arbete.”
  • ”Riktigt bra utbildning, kul att ha en inspirerande och kunnig lärare!”
  • ”Great course. Very competent and serious teacher.”
  • ”Jag tycker att kursen var bra utförd och att allt runt om själva utbildningstiden var väldigt proffsigt och alla hade ett bra bemötande.”
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