Data Communications Fundamentals Duration: 3 days

Data Communications Fundamentals
This three days course is an overview of the data communication area. It can also be an introduction to students that are going to continue with succeeding courses within data communication. Persons attending the course will go through theory as well as perform practical exercises. The participants will learn how to configure end equipment in order to set up a local area network by connecting them to a hub and a switch. They will learn how to configure switches, analyse traffic in the network and learn to use some network tools.

The target audience is any person who needs to know the basics about data communication in a company network and on Internet.

The students should have basic computer knowledge before attending this course. The students do not need to have any knowledge about data communication in advance.

This is a theoretical training with practical exercises.

NOTE: This course is not delivered with the FoldOut methodology.

Day 1

•        The OSI theoretical model
•        Organizations / Standardization
•        Packet switching vs. Circuit switching
•        Types of network, PAN, LAN, MAN, WAN
•        Addressing technologies
•        Terms used for speed/bandwidth and storage capacity
•        The need of bandwidth; different applications

Network design
•        Cable system
•        Hub/Switch and their functions
•        Router
•        Firewall
•        Gateway and Proxies
•        Practical exercise, build a LAN with cables, HUB and switch

LAN (Local Area Network)
•        Ethernet, 802.3
•        Ethernet compared to other LAN technologies
•        Different standards and speed within Ethernet
•        Frames and addressing
•        VLAN (Virtual LAN’s)
•        Spanning Tree
•        Practical exercise, connect equipment to the LAN and make some basic configuration of switches and hosts

WLAN (Wireless Local Area Network)
•        802.11 WLAN
•        Standards
•        How to build a WLAN
•        WLAN equipment
•        Security
•        Practical exercise: How to set up, configure equipment and use a WLAN

Fixed network access
•        Access to the customer’s network
•        xDSL technologies
•        PON
•        FTTx
•        Ethernet access

Day 2

Wireless access networks
•        Mobile telephony
•        GSM, GPRS, UMTS
•        LTE – 4G
•        WIMAX
•        Bluetooth

WAN (core) networks
•        Overview of different WAN (core) technologies
•        PPP/MLPPP
•        SDH
•        Long distance Ethernet
•        IP – WAN
•        IP-VPN

Introduction to TCP/IP
•        IETF standards
•        Basics functions
•        IPv4 compared to IPv6
•        IP Addressing (Public, private & NAT)
•        TCP and UDP
•        TCP/IP in a host
•        Practical exercise, Use different ways configure and test in a TCP/IP based equipment

The Internet
•        The Internet, building blocks and how it works
•        Organization
•        Access to Internet
•        How operators interconnect

•        Routing, why and how does it work
•        Equipment and protocols

Day 3

Communication applications
•        Network services: – DHCP – DNS
•        End user services: – WEB – E-mail – File transfer – IP-Telephony, SIP and Skype – IP-TV
•        Practical exercise, install, configure and use some applications

•        Definitions of QoS, CoS
•        Why QoS
•        Methods & tools
•        How to obtain traffic quality in converged networks
•        SLA
•        Measuring  QoS

•        Why security and where to place it in the OSI model
•        Threats, risks and protection
•        Firewalls
•        VPN
•        IPSec
•        TLS/SSL
•        SSH, PGP

What about communication in the future
•        How to perform future needs for communication
•        Technology trends
•        Market trends

Network Tools
•        Wireshark network sniffer
•        Ping
•        Tracert/Traceroute
•        TP Test
•        Other free and licensed tools
•        Network management & MIB
•        Practical exercise: A number of tools will be demonstrated and used during the exercises

•        End to end services
•        End to en QoS
•        End to end  data transport
•        End to end telephony service