Description

The "Networks: Fundamentals and Simulations" training aims to provide an in-depth understanding of computer networks and how they work.

Who is this training for ?

For whom ?

Computer maintenance technician, Junior network administrators, System administrators needing to review network fundamentals

Prerequisites

Computer knowledge

Training objectives

Know the main types of networks and the protocols involved

Training program

• Discover the fundamentals of networks
  • Presentation of networks
  • The different elements and their roles
  • Users and their needs
  • Architecture and topology aspects
  • Network scopes: PAN, LAN, MAN and WAN
• Understanding the OSI Model Structure
  • Organization
  • Encapsulation principle
  • Presentation of the 7 layers
• Discover the communication supports
  • Limited and non-limited supports
  • Twisted pairs
  • Optical fibers
  • Wireless links
• Identify the different network equipment
  • Repeaters and Hubs
  • Bridges and Switches
  • The Spanning Tree (principle and mode of operation)
  • Routers: roles and interest
  • Discovery of active elements: LLDP and CDP protocols
• How wireless networks work
  • WLAN concept
  • SSID
  • Communication methods 802.11, 802.11a;b;g;n
  • Security: WEP, WPA, WPA2, EAP, 802.1x, RADIUS
• Discover the Link layer
  • Media access methods: concept of collision
  • Collision management: CSMA/CD and CSMA/CA
  • Concept of MAC address: role and format
  • Unicast, Broadcast and Multicast MAC address
  • Format of an Ethernet frame
  • Port aggregation: 802.3ad standard, LACP and PAGP protocols
• Understanding the IP protocol
  • Addresses and address classes
  • Classless addresses: CIDR
  • Unicast, Broadcast and Multicast
  • IP/MAC resolution: protocol ARP
  • The IP protocol
  • Format of an IP packet
• Manage subnets
  • Subnet concepts and CIDR notation
  • Subnet aggregation: VLSM
• Know the ICMP protocol
  • Principle
  • Structure of an ICMP datagram
  • Usage examples: ping and traceroute
• IP Routing
  • Routing overview
  • Routing table
  • Static routing
  • Dynamic routing
  • - Principles
  • - Dynamic routing types
  • - Main protocols (OSPF, EIGRP,ISIS, BGP)
  • MPLS overview
• Understanding VLANs
  • Principle of VLANs
  • Types of VLANS
• IPv6 Overview
  • IPv4 address space issues
  • Introduction to IPv6
• Understanding UDP and TCP protocols
  • Transport layer protocols: concept of port and socket
  • UDP - communication in non-connected mode
  • Structure of a UDP datagram
  • TCP: communication in connected mode
  • Principle of establishing a TCP connection
  • Structure of a TCP segment
  • Sequence numbers, windows and acknowledgments
  • The states of a TCP connection
• Understanding the DHCP service
  • DHCP: Dynamic IP configuration
  • Structure of a DHCP negotiation
  • DHCP relay
  • Other services provided by DHCP
• Discover the DNS service
  • Name resolution
  • Role and interest of DNS
  • DNS architecture and the different types of DNS servers
  • Iterative and recursive queries
  • The DNS Name Server
  • - Primary Server
  • - Secondary Server
  • - Zone Transfer
  • DNS Records
  • Zone delegation
  • DNS query: nslookup and dig utilities
  • Coupling with DHCP: dynamic updates
• Understanding VPNs
  • Principles of a VPN
  • Typology of VPNs
  • Main protocols: GRE, PPTP, L2TP, IPSec, SSL/TSL
• Become aware of network security
  • Security issues
  • Filtering router
  • Address/port translator
  • Proxy
  • Firewall
  • DMZ
• Set up a simple network of virtual machines
  • Reminder of the basics with simple routing solution
  • Adding static route(s)
  • Attempting to access the Internet: problem, analysis and resolution
• Set up a virtual machine network with NAT/PAT
  • Using Private Address Ranges
  • Implementing NAT
  • Installing a Web Server on the LAN
  • Implementing work of PAT
• Detection/diagnosis of network operating anomalies
  • Malfunction detection
  • Analysis of the approach
  • Proposal of corrections
  • Implementation of corrections