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).