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Cisco 642-432 Exam Syllabus Topics:

Cisco Voice Over IP Sample Questions:

Question 1

You are working with a potential customer that would like to integrate its existing PBX telephone system into its IP network. The accompanying figure shows that the customer has two offices that need to be connected to the IP network so that the customer can exchange telephone calls without using the PSTN. Both PBXs use Wink-Start signaling.
Which signaling type will allow you to support the customer?

A. E&M
B. CAS
C. T-CCS
D. QSIG
E. CCS
F. FXO

Question 2

Which statement is true about VoIP packet loss?

A. Codec algorithms can overcome minimal packet loss.
B. Lost packets are simply retransmitted.
C. Even minimal packet loss causes echo.
D. IP phones can reconstruct up to three consecutive lost packets.

Question 3

A particular set of H.323 endpoints cannot resolve the IP address of destination endpoints. What is the H.323 approved method to fix this problem?

A. Choose another signaling protocol.
B. Build route tables in gateways on the segment.
C. Hard code all IP addresses.
D. Introduce a gatekeeper on the segment.

Question 4

In the connection between a Cisco router and an E&M port on a PBX, which side is generally the Cisco side?

A. switch port
B. trunk circuit
C. signaling unit
D. loop start

Question 5

Refer to the exhibit. Enzo's Bikes manufactures high end bicycle frames. Until recently they sold only to bicycle shops; however, now they are starting to sell to end users. They need a way to add two additional sales staff and ensure that the senior sales technician always gets the first call. Drew is the senior sales technician. Bob is the newest sales technician. Bob's phone should always be the last one chosen for incoming sales calls, after Drew and James. Bob's phone should be chosen first only when Drew and James are busy on calls.
Select the correct dial-peer command set for Bob's phone.

A. dial-peer voice 3 pots destination-pattern 5555110 preference 3 huntstop
B. dial-peer voice 3 pots destination-pattern 5555110 preference 0
C. dial-peer voice 3 pots destination-pattern 5555110 preference 2
D. dial-peer voice 3 pots destination-pattern 5555110 preference high
E. dial-peer voice 3 pots destination-pattern 5555110 preference firstlast

Solutions: