640-802 CCNA Study Guide - Elktech.org

Answer: C
Explanation:
Cisco 640-802 Exam
QUESTION NO: 311
What can a network administrator utilize by using PPP Layer 2 encapsulation? (choose three)
A. quality of service
B. compression
C. authentication
D. VLAN support
E. multilink support
F. Quality of service
Answer: B,C,E
Explanation:
Compared to HDLC , PPP has more features. Similar to HDLC, PPP defines a type of frame and
how to communicate between PPP devices including the multiplexed networks and the data link
layer protocols cross the same link. However, PPP has more characteristics as follows:
Perform the dynamic configuration of the link.
Allow for authentication.
Compress packet header.
Test the quality of the link.
Complete detecting and troubleshooting.
Allow for combining many PPP physical links into a single logical link.
PPP has 3 main components.
1.frame format
2.LCP(Link Control Protocol)
QUESTION NO: 312
Refer to the exhibit. A router boots to the prompt shown in the exhibit. What does this signify .and
how should the network administrator respond?
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