Correct Answer: B
The Flags field in the DNS Header Message contains the QR (Query Response) bit, which indicates whether the message is a query or a response, and the OPCODE (Operation Code) bits, which specify the type of query being made.
The Flags field in the DNS Header Message contains the AA (Authoritative Answer) bit, which indicates whether the responding server is authoritative for the queried domain, the TC (Truncated) bit, which indicates that the message was truncated due to its length, the RD (Recursion Desired) bit, which indicates if the client wants recursive resolution, and the RA (Recursion Available) bit, which indicates if the server supports recursive resolution.
The Flags field in the DNS Header Message contains the Z (Reserved) bits, which are reserved for future use, and the RCODE (Response Code) bits, which indicate the status of the response, such as whether it was successful or encountered an error.
Domain
DNS