A.A security group is a logical grouping that provides access policies for elastic cloud servers that have the same security protection requirements and trust each other in the same VPC

B.The system will create a security group for each user by default. The rule of the default security group is that all data packets in the outbound direction are released, and access in the inbound direction is restricted. The elastic cloud servers in the same security group and the same VPC can by default. Mutual visit

C.After the security group is created, users can define various access rules in the security group. When the elastic cloud server joins the security group, Is protected by these access rules

D.When configuring security group rules, the source address and destination address can only be set to IP addresses, not security groups

A.Elastic Calculation Service

B.Distributed Cache Service

C.Elastic load balancing

D.Virtual Private Cloud

A.True

B.False

A.VPN connection

B.VPN ah gateway

C.Subnet

D.VPC

A.Name

B.Backup time

C.Retention rules

D.Backup period