What is the meaning of Re:?

Which one of the following is considered a peripheral? a software b mouse c usb connector d motherboard

Which argument is not a valid filter? does not equal this quarter filter by cell color all of these are valid filter arguments.

What is domain name system (dns)? allows dynamic ip address allocation so users do not have to have a preconfigured ip address to use the network converts ip addresses into domains, or identifying labels that use a variety of recognizable naming conventions the efficient coexistence of telephone, video, and data communication within a single network, offering convenience and flexibility not possible with separate infrastructures the integration of communication channels into a single service