In project management and systems engineering, （） is a deliverable-oriented breakdown of a project into smaller components. It is a key project deliverable that organizes the team's work into manageable sections.

单项选择题Project Integration Management includes the processes and activities to identify, define, combine, unify, and coordinate the various processes and project management activities within the Project Management Process Groups. （） process does not belong to Project Integration Management.

A.Developing project charter
B.Developing project management plan
C.Analyzing project risks
D.Monitoring and controlling project

单项选择题The IoT architecture can be divided into three layers. （）is the key layer to realize the foundational capabilities which support the electronic devices interact with physical world.

A. Sensing layer
B. Network layer
C. Application layer
D. Operation layer

单项选择题（） is a programming model and an associated implementation for processing and generating big data sets with a parallel, distributed algorithm on a cluster. The model is a specialization of the split-apply-combine strategy for data analysis.

A.HDFS
B.Chukwa
C.MapReduce
D.HBase

单项选择题应用系统运行中涉及的安全和保密层次包括系统级安全、资源访问安全、数据域安全等。以下描述不正确的是（）。

A.按粒度从大到小排序为系统级安全、资源访问安全、数据域安全
B.系统级安全是应用系统的第一道防线
C.功能性安全会对程序流程产生影响
D.数据域安全可以细分为文本级数据域安全和字段级数据域安全

单项选择题关于信息系统岗位人员的安全管理的描述，不正确的是（）。

A.对安全管理员、系统管理员、重要业务操作人员等关键岗位进行统一管理
B.紧急情况下，关键岗位人员可独自处理重要事务或操作
C.人员离岗后，应立即中止其所有访问权限
D.业务开发人员和系统维护人员不能兼任安全管理员