What happens in the network when you enter https://wildberries.ru in the browser? Describe the DNS resolution process.

When entering https://wildberries.ru in a browser, several steps related to DNS resolving occur:

1. Checking the local cache of the browser and OS — the browser first looks for the IP address in its cache, then in the operating system's cache.

2. Query to the local DNS server — if not found in cache, the OS sends a request to the DNS server, usually the provider's.

3. Recursive DNS server query — if the local server doesn't know the IP, it contacts the root DNS servers, then the .ru top-level domain servers, and further to the authoritative DNS servers for wildberries.ru.

4. Obtaining the IP address — the authoritative server returns the IP address, which is passed back through the chain to the local DNS and OS.

5. Caching the result — the obtained IP is stored in cache to speed up subsequent requests.

6. Establishing TCP connection and TLS — the browser uses the IP to connect to the server and establishes a secure HTTPS connection.

Thus, DNS resolving is the process of converting a domain name into an IP address through sequential requests to DNS servers.