Refer to the exhibit. Which API is called when the REMOTE TU sends a TCONNECT Response to the LOCAL TU?

The correct answer is D. TCONNECT confirm. In the OSI Transport Layer service primitive model, four primitives govern a connection setup: (1) T-CONNECT.request - the LOCAL Transport User (TU) initiates the connection; (2) T-CONNECT.indication - the REMOTE TU is notified of the incoming connection; (3) T-CONNECT.response…

Understanding and Using APIs

Question

Exhibit

Options

ATCONNECT completion
BTCONNECT request
CTCONNECT indication
DTCONNECT confirm

How the community answered

(36 responses)

B
3% (1)
C
6% (2)
D
92% (33)

Explanation

In the OSI Transport Layer service primitive model, four primitives govern a connection setup: (1) T-CONNECT.request - the LOCAL Transport User (TU) initiates the connection; (2) T-CONNECT.indication - the REMOTE TU is notified of the incoming connection; (3) T-CONNECT.response - the REMOTE TU accepts or rejects the connection; (4) T-CONNECT.confirm - the LOCAL TU is notified that the connection was accepted. When the REMOTE TU sends a T-CONNECT.response, the transport service delivers a T-CONNECT.confirm to the LOCAL TU, completing the four-way handshake. The confirm primitive is the final step that tells the initiating side the connection is established.

Topics

#API Primitives#Network Communication#Transport Layer#API Interaction Patterns

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