Each domain name requires a primary domain authority on one DNS server. A secondary DNS server acts as a backup to the primary. DNS information is configurable only on the primary server, and not on the backup server. A caching DNS server other than the primary and secondary DNS servers for this domain or network can cache record lookups for the TTL (Time To Live) period. During the TTL period, a caching DNS server does not poll the primary or secondary DNS servers for repeated lookups of the same record. ...

• Word Count: 2297
• Approx Pages: 9
• Grade Level: High School

FTP is a client/server protocol. The server or host computer running FTP accepts commands from the client. ... Each computer is assigned a dynamic IP address by the DHCP server. A DHCP server is capable of assigning IP addresses to all of the computers on a network (Dux Digest). When accessing a web-site, one would use a computer name such as www.thispaperisalmostover.com, this name must be translated into an IP address using a DNS server. ...

• Word Count: 1704
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School