From ac9e83f93015a457e89559c745ce08f39a469ef2 Mon Sep 17 00:00:00 2001 From: Justin Frasier Date: Sat, 16 Sep 2023 00:07:25 +0000 Subject: [PATCH] Updated Notes --- Network_Plus/Network+_OSI.md | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/Network_Plus/Network+_OSI.md b/Network_Plus/Network+_OSI.md index b8102c9..ffd890d 100644 --- a/Network_Plus/Network+_OSI.md +++ b/Network_Plus/Network+_OSI.md @@ -7,7 +7,7 @@ * Its the on and off on the cables. --- -## __Layer 2__ Frames +## __Layer 2__ - Frames * ### Data Link Layer. * Packagers data int frames and transmits those frames on the network. * Layer 2 devices view networks __logically__. @@ -75,7 +75,7 @@ --- -## __Layer 4__ Segments +## __Layer 4__ - Segments * ### Transport Layer * TCP Transmission Control Protocol * Connection-oriented protocol that is a reliable way to transport segments across the network @@ -93,4 +93,19 @@ * Allows the clients to adjust the amount opf data in eash segment. * Allows you to send more or fewer for eash segment. * Buffering - * Occurs When devices allocate memory to store segments if bandwidth isn't readily avaiable \ No newline at end of file + * Occurs When devices allocate memory to store segments if bandwidth isn't readily avaiable + +--- +## __Layer 5__ - Session +* Session Layer + * Keeps conversations separate to prevent intermingling of data + * Setup + * Checking of user credentaials and assigning numbers to sessions to help identify them. + * Some random number that would be assigned. + * Maintain + * Transfer Data (back and forth) + * Reestablish connedtion + * Acknowlegde receipt + * Tear down + * Ending of a sesion after the transfer is doneor when the other party disconnects. + \ No newline at end of file