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Cisco Voice Over IP Sample Questions:

1. Refer to the exhibit. Your customer wants to converge voice and data on the existing T1 Frame Relay WAN link between New York and Atlanta. The customer has allocated 25 percent of the WAN link for routing updates and other overhead. You are using 6 bytes of overhead for Frame Relay, no cRTP, and the G.729 codec.
How many calls could be placed on this link?

A) five
B) two
C) three
D) six
E) seven
F) four

2. Which three are supervisory signals? (Choose three.)

A) call waiting
B) on hook
C) ring
D) off hook
E) busy

3. Site A uses three-digit internal numbers and Site B uses four-digit internal numbers.
All calls to the PSTN are routed through Site B.
What dial plan below best represents provision simplicity?

A) Translate all called numbers within Site B to three digits.
B) Translate all called numbers leaving Site A to ten digits.
C) Translate all called numbers at either site to ten digits.
D) Translate all called numbers within Site A to four digits.

4. Which statement is true about VoIP packet loss?

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

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

Solutions: