CISSP certified daily knowledge points (April 15, 2022)

The following knowledge points are derived from CISSP Official study guide Flash CARD）
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【 Knowledge point 】1
Q：What are the key concepts of the role-based access control (RBAC) model?
ask ： Role-based access control （RBAC） What are the key concepts of the model ？

A：RBAC models use task-based roles, and users gain privileges when administrators place their accounts into a role or group. Taking a user out of a role removes the permissions granted through the role membership.
answer ：RBAC The model uses task-based roles , When an administrator puts his account into a role or group , The user will be granted permission . Exiting a user from a role will remove the permissions granted through role membership .

【 Knowledge point 】2
Q：Network devices at what layer and above separate broadcast domains?
ask ： Which layer and above is the independent broadcast domain of the network equipment located ？

A：Layer 3
answer ： The third level

【 Knowledge point 】3
Q：What is SDx?
ask ： What is? SDx？

A：Software-defined everything (SDx) refers to a trend of replacing hardware with software using virtualization. SDx includes virtualization, virtualized software, virtual networking, containerization, serverless architecture, infrastructure as code, SDN, VSAN, software-defined storage (SDS), VDI, VMI, SDV, and software-defined data center (SDDC).
answer ： Everything defined by software （SDx） Refers to the trend of using virtualization to replace hardware with software .SDx Including virtualization 、 Virtualization software 、 virtual network 、 Containerization 、 Serverless architecture 、 Infrastructure （ Such as code ）、SDN、VSAN、 Software definition storage （SDS）、VDI、VMI、SDV And software defining data centers （SDDC）.

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