400-051 Exam Dumps | Which two statements about using the Load Server option for IP phone firmware distribution are true?

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Question 197/197

Which two statements about using the Load Server option for IP phone firmware distribution are true?
(Choose two.)

A. This option must be enabled on at least two servers in a Cisco Unified Communications Manager cluster.

B. This option must be enabled on Cisco Unified Communications Manager service parameters for Cisco TFTP.

C. Phone firmware must be manually copied to any applicable load servers.

D. The load server will not function if its IP address is not in the same subnet as the IP phones.

E. This option is only available for newer IP phone models.

F. This option does not accommodate falling back to Cisco TFTP on error.

Correct Answer: C,F

Explanation/Reference:
Explanation:
Choosing the Right Distribution Method
Which of the three different image-distribution methods discussed so far is the best for a customer deployment? Each method has advantages and disadvantages, and they are summarized in Table 1.
Table 1. Summary of Distribution Models
Peer Firmware Sharing
Load Server
Traditional TFTP
Advantages
Hierarchy is automatic
One download per phone model on asubnet
Uses TCP
Fails back to TFTP
Speeds up LAN upgrades
Reduces TFTP CPU load during upgrade
Has same download time as LAN image distribution
Distributes TFTP load over multiple TFTPservers
Proven distribution
Default behavior
Disadvantages
Must be enabled on each phone
Hierarchy is formed for each phone model
Hierarchy is limited to subnet
IP must be set on each phone
Administrator must manually file copy to load server No failback to TFTP on error
More prone to user error
High-bandwidth requirements
Multiple requests for same file
High CPU usage on TFTP server
Reference:http://www.cisco.com/en/US/prod/collateral/voicesw/ps6882/ps6884/white_paper_c11-
583891.pdf

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