Share testpassport ccnp 642-813 exam pdf (7)
161.Refer to the exhibit. Which statement is true about the voice traffic coming to the switch access
port that is connected to the IP phone?
A. A PC connected to a switch port via an IP phone must support a trunking encapsulation.
B. The traffic on the voice VLAN must be tagged with 802.1p encapsulation in order to coexist on
the same LAN segment with a PC.
C. A PC connected to a switch port via an IP phone is unaware of the presence of the phone.
D. To improve the quality of the voice traffic, no other devices should be attached to the IP phone.
E. The voice VLAN must be configured as a native VLAN on the switch.
Answer: C
162.VOIP has been implemented at the main office of the Company network. Which two statements
are true about voice packets in a LAN? (Select two)
A. Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media
portion of the VoIP communication.
B. Voice traffic data flow involves large volumes of large packets.
C. Because a packet loss involves a small amount of data, voice traffic is less affected by packet
losses than traditional data traffic is.
D. Voice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.
E. Voice packets are very sensitive to delay and jitter.
Answer: A,E
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