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Cisco Voice Over IP Sample Questions:

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

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

2. In a VoIP environment when speech samples are framed every 20 ms, a payload of 20 bytes is generated. Assuming a total packet length of 60 bytes, what is the length of the packet header if cRTP is deployed without redundancy checks?

A) 4 bytes
B) 1 byte
C) 20 bytes
D) 40 bytes
E) 3 bytes
F) 2 bytes

3. What are two basic parameters needed to setup a dial peer connected to the PSTN? (Choose two.)

A) voice port
B) destination pattern
C) interface bandwidth
D) signaling type

4. What does a gateway router match to a dialed number when setting up a VoIP call?

A) call leg
B) destination pattern
C) IP route
D) session target

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

A) 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.
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 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.
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.

Solutions: