A Winkler titration to determine the concentration of dissolved oxygen in a water sample. The dissolved oxygen has been converted to an equivalent amount of iodine, which is being titrated with thiosulfate using a starch indicator.
A Canonical Name record (abbreviated as CNAME record) is a type of resource record in the Domain Name System (DNS) used to specify that a domain name is an alias for another domain, the canonical domain.his confusion is specifically mentioned in RFC 2181, Clarifications to the DNS Specification.. The left-hand label is an alias for the right-hand side (the RDATA portion), which is (or should be) a canonical name.
1 The CNAME record maps a name to another name. 2  It should only be used when there are no other records on that name. 3  The ALIAS record maps a name to another name, but in turns it can coexist with other records on that name. 4  The URL record redirects the name to the target name using the HTTP 301 status code.ereâs the main differences: 1  The A record maps a name to one or more IP addresses, when the IP are known and stable. 2  The CNAME record maps a name to another name.