The -t parameter is also used to specify the type of DNS record to be queried, but it differs from -q in that it can query more types of DNS records. Note that some DNS record types can only be queried using either -q or -t, depending on the version of nslookup you are using.
nslookup example.comnslookup -q=mx example.comnslookup example.com 8.8.8.8nslookup -d example.comnslookup -6 example.com