QUESTION: 45

Which of the following OSS tools are GUI-based? (Number of correct answers:2)

Web Console
ossf s
ossbrowser
ossutil

Answer(s): B,D

Alibaba Cloud RabbitMQ is typically used in scenarios where message publishing and consumption performance requirements are high. Which of the following are supported message types in Alibaba Cloud Rabbit MQ? (Number of correct answers: 3)

Scheduled message
Ordered message
Batched message
Transactional message
Retried message

Answer(s): A,C,D

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QUESTION: 47

When using Alibaba Cloud CDN, a visitor's request will first be routed to a CDN edge node, and in the event of a cache miss at this edge node, the node will fetch data from the origin site (back-to-source request). Even with this redirection, it is possible for the origin site to see the visitors real IP address.
Which of the following statements about obtaining the visitor's real IP address are correct? (Number of correct answers: 2)

A visitor's real IP address can only be obtained by modifying the site or web application.
A visitor's real IP address is stored in the "X-Forwarded-For" HTTP header It can be directly obtained via Apache or NGINX logs.
In Windows, if IIS is used, after installing the "F5XForwardedFor" extension module, the visitor's real IP address can be seen via IIS logs.
You can activate the "record visitor's real IP" function in the Alibaba Cloud CDN console, then you can directly view visitor's IP addresses from the Alibaba Cloud CDN access logs.

Answer(s): A,C

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QUESTION: 48

A developer is making the ModifyDDInstanceSpec API call to change the specifications of an RDS instance, but the operation fails.
Why could this be? (Number of correct answers: 3)

The instance is in the running state
No instance type (specification) was included in the request parameters
The instance has a backup task being executed
The targeted RDS instance is a disaster recovery instance

Answer(s): A,B,C

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QUESTION: 48