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Cisco Voice Over IP Sample Questions:

1. You have a pair of voice enabled routers capable of supporting only medium complexity codecs. You need to conserve bandwidth on WAN links without major impact to call quality. Which two codecs will satisfy these requirements? (Choose two.)

A) G.729
B) G.729a
C) G.729b
D) G.729ab

2. Refer to the exhibit. You have been asked to configure a dial peer on R2 that will match only the extensions of the four telephones attached. Which dial-peer statement will you use?

A) dial-peer voice 1 pots destination-pattern 555[2-5][56]
B) dial-peer voice 1 pots destination pattern 5552[5-6].0
C) dial-peer voice 1 pots destination-pattern 5552[5-6][05]0
D) dial-peer voice 1 pots destination-pattern 5552.[0-5]0

3. Refer to the exhibit. Select the recommended QoS configuration for the LAN segments of the network in the campus and branch office.

A) Configure a PQ with voice control as highest priority.
Use ACLs to classify voice control traffic.
Isolate voice control traffic in its own VLAN .
Configure access switches to trust voice control traffic from IP phones.
B) Configure a PQ with WRR.
Use ACLs to classify voice traffic.
Isolate voice traffic in its own VLAN.
Configure access switches to trust traffic from IP phones.
C) Configure WRR with voice as highest priority.
Use ACLs to classify voice traffic.
Isolate voice traffic in its own VLAN .
Configure access switches to trust traffic from IP phones.
D) Configure a PQ with WRR.
Use ACLs to classify voice control traffic.
Isolate voice traffic in its own VLAN.
Configure access switches to trust traffic from IP phones.

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

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

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 a proprietary signaling type.
Which signaling type will allow you to support your customer?

A) E&M
B) T-CCS
C) FXS
D) CCS
E) FXO
F) CAS

Solutions: