(Solved by Humans)-A. Application Layer 1. Responsible for co-ordinating
Question
A. Application Layer???1. Responsible for co-ordinating communication between systems
B. Presentation Layer??2. Responsible for multiplexing upper-layer applications
C. Session Layer??????????3. Responsible for availability of intended communication partner?
D. Transport Layer??????4. Responsible for negotiating data transfer syntax
| A--->3; B--->4; C--->2; D--->1 |
| A--->2; B--->4; C--->1; D--->4 |
| A--->2; B--->3; C--->4; D--->1 |
| A--->3; B--->4; C--->1; D--->2 |
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