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Introduction to Data communications & networking

A 3 day
HANDS ON
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:
None.
Duration:
3 days

Training approach

This structured course uses Instructor Led Training to provide the best possible learning experience. Small class sizes ensure students benefit from our engaging and interactive style of teaching with delegates encouraged to ask questions throughout the course. Quizzes follow each major section allowing checking of learning. Hands on sessions are used throughout to allow delegates to consolidate their new skills.

Overall ratings for this course:

Course review


"The course provides an exceptional insight on the vast areas of data communications and networking. "
JR. L. ESA
"Very well thought out and structured course. Would recommend 100%. Lots of equipment, good quality. Gave insights in things you wouldn’t normally think about."
A. R. Unipart

Data communications course contents


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.

Wireless LANs
Type of wireless network. WiFi, 802.11b/g/n/ac, 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
Phone lines, leased lines, Layer 2: Dial up vs. Dedicated. Modems, ISDN. 64k, N*64, E1, TDM, STDM, ADSL, .xDSL, broadband architecture.

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

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

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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