Hello I am taking an introduction class to CCNA and we are focusing on the Application Layer,
and I'm having some difficulty in understanding what is an Application Layer Service. Is the Application
Layer Service the same as Application Layer Software? Thanks for the help in advance.

think of it this way,

application layer is what you see on you computer, and how you interact with the device,
be it mouse/keyboard etc.

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"If you're good at anticipating the human mind. It leaves nothing to chance."
-Jigsaw

What ristau said, but also welcome to the world of Cisco the most fun and most frustration you will have in an air conditioned room with your pants on

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Networking is much like making love to a beautiful woman
Slide your equipment in to the rack, Stick your plug in the socket, and if you have done it right at the end everyone is happy

application layer == user layer.


its where most of the users applications are.