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Cisco Voice Over IP Sample Questions:

1. Examine the example output.
hostname GW1 ! interface Ethernet 0/0 ip address 172.16.2.1 255.255.255.0 h323-gateway voip interface h323-gateway voip id GK1-zone1.abc.com abc.com ipaddr 172.16.2.2 h323-gateway voip h323-id GW1 h323-gateway voip bind srcaddr 172.16.2.1 ! dial-peer voice 1 voip destination-pattern 1212. session-target ras ! dial-peer voice 2 pots destination-pattern 2125551212 no register e164 !
end
Choose the command that will restore communication with gatekeeper functionality to this device.

A) h323-gateway voip GW1-zone2.abc.com abc.com ipaddr 172.16.2.1
B) h323-gateway voip h323-id GK1
C) gateway
D) h323-gateway voip bind srcaddr 172.16.2.2

2. Refer to the exhibit.

Your customer wants to converge the existing PBX network with the IP network.
The three remote offices have various types of PBXs. The customer is using a combination of tie-lines and trunks to connect the PBXs today.
Which kind of connection should be implemented to allow calls to be placed from 201-5551000 to 727-555-1000 so that when the call is completed, network resources are returned for other uses?

A) answer-mode
B) tie-line
C) trunk
D) PLAR

3. You have been forwarded some questions by a prospective VoIP customer who would like to know the Cisco default sample size for the G.729 codec. What is it?

A) 20 ms
B) 10 ms
C) 30 ms
D) 40 ms

4. One voice packet is lost between Phone A and Phone B.
What will be the result to the listener?

A) The listener will experience a gap in the received audio stream.
B) The call is terminated.
C) The listener will hear the audio normally. Packet loss concealment will make the loss inaudible.
D) The listener will hear the audio out of order when the lost packet is retransmitted.

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

Solutions: