Free CCNP Voice CVOICE v8.0 642-437 Exam Questions (26-30)

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QUESTION 26
Which three methods are used by a Cisco Unified Border Element to provide network hiding? (Choose three.)
A.Back-to-back user agent, replacing all SIP-embedded IP addressing
B.IP network security boundary
C.media flow-through
D.RSVP
E.IP network privacy
F.Intelligent IP address translation for RTP flows
Answer: BEF

QUESTION 27
What is the function of class-based marking?
A.Marking packets is based only on CoS value, IP precedence value or DSCP value allows Layer 3
frames to be identified and distinguished from other packets.
B.Marking frames based only on CoS value or IP precedence value allows Layer 2 frames to be identified
and distinguished from other frames.
C.Marking frames or packets sets information in the Layer 2 and Layer 3 headers of a packet so that the
frame or packet can be identified and distinguished from other frames or packets in the same traffic flow.
D.Marking frames only sets information in the Layer 2 headers of a frame so that the frame can be identified
and distinguished from other packets or frames.
E.Marking allows network devices to classify a packet or frame, based on a specific traffic descriptor.
Answer: E

QUESTION 28
A small office needs to provide outbound dialing and in-bound DID without the cost of a T1 circuit. All signaling is loop start. Which analog port configuration will support these requirements?
A.voice-port 0/0/0
description fxs-did
signal did loop-start
!
voice-port 0/1/0
description fxo
signal loop-start
!
dial-peer voice 1 pots
incoming called-number .
direct-inward-dial
port 0/0/0
!
dial-peer voice 90 pots
destination-pattern 9T
port 0/1/0
B.voice-port 0/0/0
signal loop-start
!
voice-port 0/1/0
signal loop-start
!
dial-peer voice 1 pots
incoming called-number T
direct-inward-dial
!
dial-peer voice 90 pots
destination-pattern 9T
port 0/1/0
C.voice-port 0/1/0
signal did loop-start
!
dial-peer voice 1 pots
incoming called-number .
!
dial-peer voice 90 pots
destination-pattern 9T
port 0/1/0
D.voice-port 0/0/0
signal did loop-start
!
dial-peer voice 1 pots
incoming called-number .
direct-inward-dial
!
dial-peer voice 90 pots
destination-pattern 9T
port 0/0/0
Answer: A

QUESTION 29
Which statement best describes dial peers in a voice gateway. (Choose two.)
A.Dial peers are call legs that are used to identify call source and destination endpoints and to define
the characteristics that are applied to each call leg in the call connection.
B.Dial peers are configured with call legs that are essential to implementing dial plans and providing
voice services over an IP packet network.
C.A dial peer is a physical addressable endpoint in a voice gateway.
D.Dial peers create physical connections called call legs to complete an end-to-end call.
Answer: AC

QUESTION 30
Which QoS mechanism for VoIP works with weighted fair queuing (WFQ) and class-based weighted fair queuing (CBWFQ)?
A.Header compression
B.FRF.12
C.IP RTP Priority and Frame Relay IP RTP Priority
D.Multilink PPP
E.RSVP
Answer: C

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