Audience
Technicians who need to learn essential ISO OSI Reference Model and TCP/IP protocol suite.
This 2-days course aims to introduce students to basic principles of TCP/IP packet networks. The course
starts with reviewing key concepts and formalism of ISO OSI Reference Model (ITU-T X.200) and TCP/IP
protocol suite. In-depth lectures are supported by a numerous examples and practical exercises based on
sample capture files with traffic patterns from real-live networks.
Day 1
Introduction to networking and the ISO OSI reference model
1. Introduction to modern computer networks, LAN and WAN
2. ISO OSI Reference Model. Services, interfaces, protocols
3. Modular structure of the data networks. Encapsulation and data units
4. Selected elements of layer operation: segmenting-reassembling, sequencing, flow control
TCP/IP protocol suite
1. physical layer: Ethernet (physical media, speed, duplex, auto-negotiation).
2. data link layer: Ethernet (protocol), LAN switching operation, Virtual LAN (VLAN), First Hop Redundancy Protocol (FHRP), introduction to spanning tree protocols.3. network layer: IPv4 routing, addresses, classes; ICMP, ARP, DHCP, diagnostics tools (ping, tracer-oute).
Day 2
TCP/IP protocol suite (cont.)
1. transport layer: TCP (basic characteristics, packet structure and operations, sequence and acknowl-
edge numbers, connectivity and reliability, flow controls - sliding window), UDP (packet structure and operation), sockets, addressing.
2. application layer: DNS (structure, operation, types of records), HTTP (basic characteristics, meth-
ods), FTP (basic characteristics, active passive modes).
Network traffic analysis with Wireshark