Q: A complete Fully Qualified Domain Name (FQDN) is limited to how many characters?
or
Q: How many characters may make up a fully qualified domain name (FQDN)?
- 63
- 255
- 53
- 127
Explanation: The maximum number of characters that may be used in a Fully Qualified Domain Name (FQDN) must be 253. This comprises the domain name as well as the dots that are used to separate the labels that are included inside the domain. The specifications for the Domain Name System (DNS) include this restriction as one of its parameters.
