|The OSI Layers and Protocol Stacks
|This course begins the four "IP Telecom" courses in the Certified Telecommunications Network Specialist (CTNS) certification package, the Certified IP Telecom Network Specialist (CIPTS) certification package, and the Telecom, Datacom and Networking for Non-Engineers course package.
This course establishes a framework for all of the discussions in subsequent lessons and courses: the OSI 7-Layer Reference Model, which identifies and divides the functions to be performed into groups called layers. This framework is required to sort out the many functions that need to be performed, and to be able to discuss separate issues separately.
You'll learn what a layer is, the purpose of each layer, see examples of protocols used to implement each layer, and learn how a protocol stack really works with the famous "FedEx Analogy" presented as an embedded video by our top instructor, Eric Coll.
Based on Teracom’s famous Course 101, tuned and refined over the course of 20 years of instructor-led training, we'll cut through the jargon to demystify layers, explaining the jargon and buzzwords, and most importantly, the underlying ideas, and how it all works together... in plain English.
1. Introduction (watch now - free)
Course introduction and overview
2. Open Systems
Open systems vs. proprietary systems.
3. Protocols and Standards (watch now - free)
The difference between a protocol and a standard.
4. ISO OSI 7-Layer Reference Model
Top-level overview and introduction to Layers
5. The Physical Layer
Fiber, Twisted Pair, Cable and Wireless
6. Data Link Layer
LANs and MAC Addresses
7. Network Layer
IP, MPLS, Packets and Routers
8. Transport Layer
Reliability, Connections, Ports and Sockets
9. Session Layer
SIP, POP and HTTP
10. Presentation Layer
ASCII, MIME, Compression, Encryption, Codecs
11. Application Layer
SMTP, HTML and English
12. Protocol Stacks
The FedEx Analogy
13. Protocol Headers
14. Standards Organizations
15. Multiple-choice Exam
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