A hands on training course introducing the concepts of data communications, moving on to covering both LAN and WAN technology. Quizzes are used extensively to ensure material has sunk in and to maximise learning time. Hands on sessions ensure that by the end of the course delegates have made cables, built LANS and WANS, configured TCP/IP, switches and routers. 2025 Wireshark. Networking. IP. Data Comms
None
By the end of the course delegates will be able to:
What are networks?
What is data communications? What are networks? Types of network, LANs, LAN choices, WANs, WAN choices, PANs, SANs, MANs, connecting networks. Internetworks, the internet, clouds.
Networks and standards
Standards bodies, ISO, ITU, IEEE, IETF, OSI 7 layer reference model, TCP/IP and OSI, ping and the 7 layer model, encapsulation, fragmentation.
The physical layer
Transmission media: Copper, Fibre, RF, UTP, Cat 5/5e/6/7..., RJ45, straight and cross over cables. Coax, Fibre cable & connectors, SFP, MMF, SMF, radio spectrum, frequencies, ranges, noise and electrical distortion, repeaters.
Hands on: Cabling, ping.
Bandwidth
Definition, Bits, bytes, speeds, simplex, half/full duplex, a/symmetrical, aggregation, latency. Calculating bandwidth requirements.
The Data Link layer
Frames, classifications, standards, LAN/WAN layer 2 technologies (Point to point, virtual circuits).
Ethernet
What is Ethernet? 802.3, evolution from CSMA/CD, choosing cables, topologies, NICs, MAC addresses. Ethernet frame format.
Hands on: Analysing Ethernet frames.
Ethernet switches
Connecting multiple devices, switches work at layer 2, Switches vs. hubs, simultaneous conversations, full duplex, MAC address database, how switches work, switch benefits, loops, STP. Console ports.
Hands on: Switches and WireShark, configuring switches, broadcast storms, STP.
VLANS
What are VLANs, why have VLANs.
Hands on: The effect of VLANs on network traffic.
Wireless LANs
Type of wireless network. WiFi, 802.11b/g/n/ac, WiFi6, antennae, interference, 802.11 frame format, CSMA/CA, half duplex, Wireless Access Points, security.
Hands on: Building a WiFi network.
WANS
WAN architecture, WAN types, service providers, access equipment, DTE, DCE, core equipment, WANs and the 7 layer model, choosing a WAN.
WAN access
Point to point, multi access, Internet, phone lines, leased lines, xDSL, broadband architecture. DOCSIS, FTTH, PON, SD-WAN. Older technologies (if required): Modems, ISDN, 64k, E1, TDM.
Packet switched networks
Packet switching, virtual circuits, Hub & spoke, partial & full mesh, MPLS, MPLS and routers, Why MPLS? MPLS -TE, MPLS VPN, Internet VPN. Older technologies (if required).
Service provider technologies
Transport plane, SDH, SONET, WDM, CWDM, DWDM, DWDM architectures, OTN.
TCP/IP
Definition, protocols, services, internetworking, the Internet, intranets, IAB, RFCs, IP header, IP addressing, subnet masks, IPv6, TCP, UDP.
Hands on: IP address and subnet mask configuration.
Routers
What are routers? Routers vs switches, when to route and when to switch, default gateways, routing tables, static routes, routing protocols. Firewalls, how firewalls work.
Hands on: Router configuration, tracert.
Applications
Clients, servers, web, HTTP, Email, resource sharing, IM, VoIP, Video over IP, terminal emulation, ftp, ssh.
Hands on: telnet
Experience Introduction to data communications & networking in Finland through Bilginç IT Academy's live and interactive virtual classroom environment. Join a Public course as an individual delegate or arrange a dedicated Private / In-house online training program exclusively for your organization.
Experience Introduction to data communications & networking through face-to-face Classroom Based training in Finland. Training can be delivered as a Public course open to individual delegates or as a dedicated Private / In-house class for your organization.
Arrange Introduction to data communications & networking in Finland as a dedicated Onsite training program for your organization. Bilginç IT Academy trainers can deliver the training at your office or another location of your choice, with the program planned around your team's requirements and business objectives.
Join our public live virtual trainings remotely from Finland. Private group trainings can also be organized at your preferred location in Finland, around your schedule.
Finland is globally recognized as a leader in education and high-tech innovation, particularly in the fields of mobile telecommunications and software engineering. Helsinki, Espoo, and Tampere form a powerful tech triangle, supported by the research excellence of Aalto University and a long history of pioneering technology. The Finnish tech culture is built on a foundation of early digital adoption, making it a world leader in IoT, cybersecurity, and gaming technology. Our IT training programs in Finland are designed for a workforce that demands the highest technical standards and precision. We focus on delivering advanced certifications in Network Security, Software Architecture, and Cloud Native development, ensuring that Finland continues to set the benchmark for technological sophistication in the Nordic region.
