Intro to the OSI Model and TCP/IP Protocol Suite

Covers the function and purpose of the layers in the OSI Model and TCP/IP Protocol Suite.
Here is a link to the text file in the video: drive.google.com/open?id=1h1c...
OSI Model
================================
7. Application* - Programs and Services
6. Presentation* - file formats, compression
5. Session* - open, close and manage sessions between end-user application processes
4. Transport - Ports, logical communication between application processes
3. Network - Logical Addressing, Routers
2. Data Link+ - Physical Addressing, Switches, NICs
1. Physical+ - Bits, Media (copper, fiber, radio), NICs, Hubs
7. Application* - HTTP, HTTPS, DNS, FTP, SMTP, Telnet, SSH, DHCP, SSL/TLS
6. Presentation* - MIME
5. Session* - RTP, SOCKS
4. Transport - TCP, UDP
3. Network - IPv4, IPv6, ICMP, ICMPv6, IPSec
2. Data Link+ - MAC addressing, Ethernet, WiFi, DSL, PPP,
1. Physical+ - Encoding bits to 1 and 0 s on the media
TCP/IP Protocol Suite PDU Header
==============================================
Application Layer* Data Application specific fields
Transport Layer Segments source & destination port numbers (host & service)
Internet Layer Datagrams source & destination ip addresses
Link Layer+ Frames source & destinatation mac addresses

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[@rohitkumar-es5uc]

I have a doubt here, whether Ssl/TLS is part of application layer, or it should be at Presentation or Session layer ?

[@abdchuhan]

I always wonder why we have network layer above than data link layer i.e. order-wise request from Host first reaches to the Switch rather than Router… Anyone have answer for it, kindly respond.

[@satorlcd]

it would be great if it had a translation in Spanish, thanks a lot.

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Please (Physical Layer) Do (Data Link Layer) Not (Network Layer) Tell (Transport Layer) secret (Session Layer) Password (Presentation Layer) Anyone ( Application Layer )

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This one works for me the best. Please (Physical Layer) Do (Data Link Layer) Not (Network Layer) Teach (Transport Layer) students (Session Layer) Phony (Presentation Layer) acronyms ( Application Layer )