Which of the following is classified as the C (i.e., Check) of the PDCA cycle for service
management concerning a mail system?
a) A review of server configuration was proposed to shorten the response time of the
mail system.
b) An availability target was set for the mail system, and necessary resources were
clearly identified.
c) The number of faults and the recovery time were measured for the mail system, and
Its availability was calculated from them and compared with target values.
d) Storage allocation and other system setup tasks were performed in accordance with
details of the mail system design.