Final answer:
A Secondary DNS server contains a read-only copy of the primary server's zone database, acting as a backup and aiding in load balancing and redundancy, without having the authority to make changes to the DNS records.
Step-by-step explanation:
The server you're inquiring about is known as a Secondary DNS server. This type of server holds a copy of the primary DNS server's zone database. However, it is crucial to understand that the secondary DNS server is not used for making changes or updates to the DNS records; instead, it primarily serves as a backup system to the primary DNS server.
The role of a secondary DNS is particularly important for load balancing and redundancy, ensuring that if the primary server is unavailable due to maintenance or unexpected downtime, the secondary can step in, holding the zone file read-only copies, to resolve domain names to IP addresses without interruption to the end-users. Despite having a crucial operational role, it is not authoritative for updates, hence administration tasks such as adding or changing records are not performed on the secondary server; those tasks remain the responsibility of the primary DNS server which holds the master copy of the zone file.