CCNA Cisco Certified Network Associate Study Guide - FTP Server

Answers to Review Questions 541
14. B. Cisco uses a proprietary HDLC as the default encapsulation on all
their serial interfaces.
15. A, B, C. The Local Management Interface provides PVC status messaging,
the DLCI values associated with a PV, and global or local significance
of the DLCI values.
16. B. Network Control Protocol works at the LLC sublayer of the Data
Link layer and is responsible for allowing multiple Network-layer protocols
to be used with PPP.
17. A. Link Control Protocol works at the MAC sublayer of the Data Link
layer to establish, maintain, and authenticate a data-link connection.
18. D. Data Link Connection Identifiers (DLCIs) are used to identify
a PVC.
19. C, D. The Local Management Interface provides PVC status messaging,
the DLCI values associated with a VC, and global or local significance
of the DLCI values.
20. D. Backward-Explicit Congestion Notification (BECN) is used to
send information back to an originating router telling it to slow down
its transfer rate because the switch is congested.