in the following I'm going to give you some text and ask you to generate questions related to that text and a corresponding correct response and incorrect response using that text
give the answer in a json format

text: "Name servers generally come in two forms: authoritative name servers, and caching (also known as resolving) name servers. An authoritative name server is needed when: • One wants to serve DNS information to the world, replying authoritatively to queries. • A domain, such as example.org, is registered and IP addresses need to be assigned to hostnames under it. • An IP address block requires reverse DNS entries (IP to hostname). • A backup or second name server, called a slave, will reply to queries. A caching name server is needed when: • A local DNS server may cache and respond more quickly than querying an outside name server. When one queries for www.FreeBSD.org, the resolver usually queries the uplink ISP’s name server, and retrieves the reply. With a local, caching DNS server, the query only has to be made once to the outside world by the caching DNS server. Additional queries will not have to go outside the local network, since the information is cached locally." Do not include the following keywords: entry, format, reply, address
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