Section 3 – Implementing and Hardening IP Phones
QUESTION 1
Refer to the exhibit.
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Which of these statements are true?
A. 1001 can watch 1002, but not 1003.
B. 1002 can only watch 1003.
C. 1003 can only watch 1001.
D. 1001 can watch 1002 and 1003.
E. 1002 cannot watch any extension.
Answer: AC
QUESTION 2
Which two of these are characteristics of multicast music on hold? (Choose two.)
A. It uses one-way RTP point-to-point.
B. There is a single user per audio stream.
C. Networks and devices have to support multicast.
D. It decrements by port number for different audio sources.
E. It uses the multicast group address 239.1.1.1 to 239.255.255.254.
F. It uses service parameters to set the codec type or types that are used by conferencing services
Answer: CE
QUESTION 3
Which information is provided to the IP phone from the TFTP server?
A. the IP address of the DNS server
B. device configuration files and firmware upgrade files
C. time and date information
D. the name resolution protocol that allows IP applications to refer to other systems by logical names instead of IP addresses
Answer: B
QUESTION 4
If an IP phone loses connectivity with its primary server and registers with its backup server, what happens when connectivity to the primary server is restored?
A. The IP phone will try to re-establish a connection to the primary server every 90 seconds.
B. The IP phone will continuously try to re-establish a connection with the primary server; if successful, the IP phone will re-register with the primary.
C. Once the IP phone registers with the backup server, the administrator will need to reset the IP phone for it to re-register with the primary server.
D. Once connectivity is re-established with the primary server, the IP phone will wait until there have been three successful TCP keepalive exchanges before it will re-register with the primary server.
Answer: B
QUESTION 5
If an IP phone has a device CSS that permits access to all internal and external numbers, which line CSS, would restrict access to toll free numbers?
A. block local, block international
B. block local, toll free and block international
C. block toll free
D. block local, block long distance, block toll free
Answer: C
