In the past, Ajax has experienced several phone outages, one of which lasted over seven hours when the company’s current PBX had a software crash. Telephone communications are critical, so Ajax would like to design the IP telephony solution to be scalable and highly available.
Which three options must you consider when deciding upon a cluster server redundancy scheme? (Choose three.)Which three options must you consider when deciding upon a cluster server redundancy scheme? (Choose three.)
Which three options must you consider when deciding upon a cluster server redundancy scheme? (Choose three.)
A.
thefailovertime for each scheme
B.
the impact on the users during system backups
C.
the likelihood of multiple primary server failures
D.
the impact on the users during software upgrades
E.
the number of IP phones registered on the subscribers
F.
whetherthe publisher is dedicated or has devices registered to it