642-437 Sample Question : 4

QUESTION 4:

Which other protocol does the auto qos voip cisco-phone command require to operate between
the switch port and the IP phone?

A. RTP
B. Skinny Protocol
C. CDP
D. RTCP
E. VTP
F. DTP

Answer: C

642-437 Sample Question : 3

QUESTION 3:

What is the class selector PHB used for in the differentiated services model?

A. Best-effort service
B. Low-delay service
C. Bandwidth guarantee
D. Backward compatibility

Answer: D