Which operations can be performed using Log Service's API?

The operations that can be performed using Log Service's API include creating a Logstore, as well as writing and reading logs. Logstores are fundamental components of Alibaba Cloud's Log Service, designed for organizing and managing log data.

Creating a Logstore allows users to define a new storage space specifically for collecting logs from various sources. Once a Logstore is established, it permits users to write logs to this designated space, which can come from applications, servers, or other log-generating entities. In addition, reading logs from a Logstore allows users to retrieve and analyze stored log data, enabling them to gain insights into application performance, security events, or operational metrics.

The other answer choices pertain to functions that are outside the scope of the Log Service API. Accessing support forums is related to customer support rather than log management. Changing billing information is an administrative task typically performed through account management interfaces rather than through the Log Service API. Running system performance checks is related to monitoring and may involve different Alibaba Cloud services, but it does not specifically pertain to log management functionalities.