In Europe, the OC de?¬?nes the bandwidth points, and in North
America, the SDH de?¬?nes the bandwidth points.
f. Bandwidth refers to the rate at which data is transferred over the communication
link.
32. Which three statements describe the functions of HDLC?
a. HDLC includes support for both point-to-point and multipoint con?¬?gurations.
b. HDLC includes a method for authentication.
c. HDLC is compatible between devices from different vendors.
d. HDLC speci?¬?es an encapsulation method for data on synchronous serial data
links using frame character and checksum.
e. HDLC supports only multipoint con?¬?gurations.
f. The Cisco implementation of HDLC includes windowing and ?¬‚ow control.
33. Which three statements describe the function of PPP?
a. The authentication phase of a PPP session is required.
b. PPP provides router-to-router and host-to-network connections only over
asynchronous circuits.
c. PPP originally emerged as an encapsulation protocol for transporting IP traf?¬?c
over point-to-point links.
d. PPP established a standard for the management of TCP sessions.
e. PPP provides router-to-router and host-to-network connections over synchronous
and asynchronous circuits.
f. The LCP in PPP is used for establishment, con?¬?guration, and testing the
data-link connection.
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