（）is a discipline with in the information technology and information systems domain and is concerned with making the planning process for information technology investments and decision-making a quicker，more flexible，and more thoroughly aligned process.
A、Information technology planning
B、Service monitor management
C、Service design
D、Information technology audit

IT Service Design （SD）provides good－practice guidance on the design of IT services，processes，and other  aspects of service management effort .（）does not belong to the main activities of service design process.
A、Service catalogue design
B、Release and deployment management
C、Service cost assessment
D、Service level design

Change management would typically be composed of the raising and recording of changes, assessing the impact, cost, benefit and risk of proposed changes,developing business justification and obtaining approval, managing and coording change implementation, monitoring and reporting on implementation, reviewing and closing （）.
A、change reason
B、change model
C、remediation plan
D、change requests

PCDA（Deming cycle）is an iterative four－step management method used in continual improment of processes and products.During the（）phase，the data and results gathered from the do phase are evaluated.Data is compared to the expected outcomes to see any similarities and differences.
A、plan
B、do
C、check
D、act