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Introduction to Data communications & networking

A 3 day
training course

Data comms training course description

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

Key outcomes from this course

By the end of the course delegates will be able to:
  • Use the seven layer model to classify networking buzzwords.
  • Build and troubleshoot Ethernet, LAN/WAN and WiFi networks
  • Evaluate LAN and WAN technologies.
  • Explain the difference between switches and routers.
  • Connect networks with routers.

Data communications training course details

Who will benefit:
Anyone who requires a technical introduction to networks.
Data communications training course prerequisites:
3 days

Training approach

This structured training course seeks to build upon workbook learning through the use of group exercises, dynamic discussion and individual tasks in order to deliver an engaging and interactive module that will ensure all candidates are able to transfer their new skills into the workplace.

Overall ratings for this course:

Course review

"Hard concepts were explained very simply."
J. S., Framestore CFC
"Excellent presentation - very good course structure."
B. M., London Internet Exchange

Data communications course contents

Networks and standards
LANs, WANs, PANs, MANs, connecting networks. OSI 7 layer reference model.

The physical layer
Transmission media: Copper, Fibre, RF, UTP, Cat 5/5e/6/..., 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.

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 (Pt to pt, virtual circuits).

802.3, evolution from CSMA/CD, choosing cables, topologies, NICs, MAC addresses.
Hands on: Analysing Ethernet frames..

Ethernet switches
Switches vs. hubs, simultaneous conversations, full duplex, layer 2, MAC database, how switches work, switch benefits, loops, STP.
Hands on: Switches and WireShark, configuring switches, broadcast storms, STP.

Wireless LANs
Type of wireless network. WiFi, 802.11b/g/n/ac, antennae, interference, 802.11 frames, CSMA/CA, half duplex, Wireless Access Points, security.
Hands on: Building a WiFi network.

WAN architecture, service providers, access equipment, DTE, DCE, core equipment, choosing a WAN.

WAN access
Phone lines, leased lines, Layer 2: Dial up vs. Dedicated. Modems, ISDN. 64k, N*64, E1, TDM, STDM, ADSL, .xDSL, broadband architecture.

Packet switched networks
Packet switching, virtual circuits, Hub & spoke, partial & full mesh, ATM, MPLS, MPLS and routers, MPLS-TE, MPLS VPN, Internet VPN.

Service provider technologies
Transport plane, SDH, SONET, DWDM, OTN.

Definition, protocols, services, internetworking, the Internet, intranets, IAB, RFCs, IP header, IP addressing, subnet masks, IPv6, TCP, UDP.
Hands on: IP configuration.

What are routers? Routers vs switches, when to route and when to switch, default gateways, routing tables, static routes, routing protocols. Broadcast domains. Firewalls.
Hands on: Router configuration, tracert.

Clients, servers, web, Email, resource sharing, IM, VoIP, Video over IP, terminal emulation, ftp, ssh, baselining.
Hands on: telnet

Why Choose Us

SNT trainers score an average of over 90% on the three main areas of:
  • Ability to teach
  • Technical knowledge
  • Answering questions
“Excellently presented by a very knowledgeable and enthusiastic trainer.” P.D. General Dynamics

We limit our maximum class size to 8 delegates; often we have less than this. This ensures optimal interactivity between delegates and instructor.
"Excellent course. The small class size was a great benefit…" M.B. IBM

We write our own courses; courseware does not just consist of slides and our slides are diagrams not bullet point text. A typical chapter provides clearly defined objectives with a chapter overview, slides with text underneath, a quiz at the end to check the learning of the students. Hands on exercises are at the end and are used to reinforce the theory.

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