Which of the choices below is NOT an OSI reference model Session Layer protocol, standard, or interface?

Which of the choices below is NOT an OSI reference model Session
Layer protocol, standard, or interface?

A.
SQL

B.
DNA SCP

C.
RPC

D.
MIDI
E. ASP

Explanation:
The Musical Instrument Digital Interface (MIDI) standard is a Presentation
Layer standard for digitized music. The other answers are all Session layer protocols or standards.
SQL refers to the Structured Query Language database standard originally developed
by IBM.
Answer RPC refers to the Remote Procedure Call redirection
mechanism for remote clients.
ASP is the AppleTalk Session Protocol.
DNA SCP refers to DECnet’s Digital Network Architecture Session Control Protocol. Source:
Introduction to Cisco Router Configuration edited by Laura Chappell (Cisco Press, 1999).