The knowledge about RAS message is very important. Which of the following RAS messages can
be sent by using either unicast or multicast?

Given the following configuration, what IP address will GK1 use to send and receive RAS

messages?
GK1 (config)#interface serial 0/0/0
GK1 (config-if)#ip address 192.168.0.2 255.255.255.0
GK1 (config-if)#exit
GK1 (config)#interface serial 0/0/1
GK1 (config-if)#ip address 172.16.0.2 255.255.255.0
GK1 (config-if)#exit
GK1 (config)#gatekeeper
GK1 (config-gk)#zone local SanJose cisco.com 172.16.0.2
GK1 (config-gk)#zone remote Austin cisco.com 192.168.0.1
GK1 (config-gk)#zone prefix SanJose 2…
GK1 (config-gk)#zone prefix Austin 3…

You are a network technician working in the Network Company. Recently, users complain that
they cannot call the PSTN. With the help of testing, you find that the gateway is not switching to
the secondary call agent when the primary call agent is unreachable. In order to permit the MGCP
gateway to take use of a different call agent once the primary fails, which configuration should you
make?

Which RAS message does a gateway use to request admission to a network and to also request
phone number to IP address resolution?

As a network technician, you should be familiar with RTCP. Which of the following statements best
describes a function of RTCP?

You are a voice technician. If you are required to solve latency issues in a VoIP network, which
measures will you take? (Select three.)

Please choose two methods of LRQ forwarding from the following items. (Select two.)

Look at the following exhibit carefully. You are a network technician working in a middle-sized
company. Some users complain that the call is always dropped as soon as it connects when they
dial from BR1 to HQ through the IP WAN. Please choose the most possible reason of this issue
from the following statements.

You are a network technician with many years’ experience. Many users complain that they can
hear echo when their calls go out an H.323 gateway. You have made some testing for the
gateway and have changed the configuration. So the ERL level turns to be 6 dB. Furthermore, the
echo-cancel coverage value is raised to 64 ms. Please choose the effect on the voice quality after
this modification.

Refer to the exhibit.

When Alice at extension 2001 places a call to Bob at extension 3001, Bob hears Alice’s voice
twice. What type of echo is this classified as?