JR. L. ESA
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.
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).
What is Ethernet? 802.3, evolution from CSMA/CD, choosing cables, topologies, NICs, MAC addresses. Ethernet frame format.
Hands on: Analysing Ethernet frames.
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.
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.
WAN architecture, WAN types, service providers, access equipment, DTE, DCE, core equipment, WANs and the 7 layer model, choosing a WAN.
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.
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.
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.
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
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.