In an active-active GSLB environment, which description matches the order of records in the response when MIR is enabled?

In an active-active GSLB environment, which description matches the order of records in the response when MIR is enabled?

• A. The Local GSLB service as the first record
• B. The Remote GSLB service as the first record
• C. The best global GSLB service as the first record, with remaining active services as additional records
• D. The best GSLB service as the first record, with no additional records

Answer: (C)

Minimal Initial Response (MIR) in an active-active GSLB setup aims to deliver the quickest path to the best-performing site while still offering fallback options. When MIR is enabled, the DNS response places the best global GSLB service as the first record so the client can connect to the top-performing site immediately. The remaining active services are returned as additional records in the same response, giving the client readily available alternatives without needing another DNS query. This behavior matches the description of returning the best global GSLB service first, with the other active services listed as additional records. Returning a local or remote site as the first record would not reflect the MIR prioritization of global performance, and returning only a single record would omit useful fallbacks.

Minimal Initial Response (MIR) in an active-active GSLB setup aims to deliver the quickest path to the best-performing site while still offering fallback options. When MIR is enabled, the DNS response places the best global GSLB service as the first record so the client can connect to the top-performing site immediately. The remaining active services are returned as additional records in the same response, giving the client readily available alternatives without needing another DNS query. This behavior matches the description of returning the best global GSLB service first, with the other active services listed as additional records. Returning a local or remote site as the first record would not reflect the MIR prioritization of global performance, and returning only a single record would omit useful fallbacks.