CISCO CCNA Exam – Q327

Refer to the exhibit.
CISCO CCNA Exam – Q327

Which statement describes DLCI 17?

A. DLCI 17 describes the ISDN circuit between R2 and R3.
B. DLCI 17 describes a PVC on R2. It cannot be used on R3 or R1.
C. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.
D. DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.

Correct Answer: C

DLCI-Data Link Connection Identifier Bits: The DLCI serves to identify the virtual connection so that the receiving end knows which information connection a frame belongs to.
Note that this DLCI has only local significance. Frame Relay is strictly a Layer 2 protocol suite.