When a user uses the HUAWEI CLOUD ELB service to distribute load to multiple ECS instances, which of the following methods can be used to obtain the real IP address of the requesting user?
(Multiple choice)

In the product architecture of HUAWEI CLOUD Application Operation and Maintenance Management AOM, which of the following data storage can be supported at the storage and transmission layer? (Multiple choice)

HUAWEI CLOUD ELB is a service that distributes traffic to multiple ECS instances and supports Layer 4 and Layer 7 forwarding protocols. When the seven-layer service is loaded, which of the following methods is mainly used to distribute traffic to ECS instances? (Multiple choice)

Deploy the Guestbook application on ServiceStage. Guestbook is composed of three container application components: Frontend is the front-end page component, the code logic is in Frontend, and the redis master and redis- sl ave components provide primary and secondary storage. How to implement container affinity deployment can achieve the following two goals: 1. Reduce the possible network loss between Frontend and redis master communication. 2. Enable the main and backup storage to be scattered on different nodes and reduce the impact of downtime.

The tenant has built a web site based on HUAWEI CLOUD. It has been observed that the maximum service bandwidth of this site is 120Mbit/s. It is now necessary to implement security reinforcement for the site, mainly to achieve web attack protection, sensitive information filtering, Web page tamper-proof and CC attack protection.
In response to the above security requirements, what type of cloud services and corresponding versions does Huawei Cloud recommend that tenants purchase?