Of the four statements below, which is true? a. Expansion cards are nonvolatile memory chips that can be erased and rewritten.
b. Expansion cards are used to direct and coordinate most of the operations associated with local area network (LAN) and internet servers.
c. Expansion cards are the main circuit boards within a computer system.
d. Expansion cards are circuit boards that enhance the functions of a components of asystem unit and/or provide connections to peripherals.

How can you tell if someone sent you a text message to your email instead of a email

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

Leo is a recruitment executive for a large company. he has identified new labor resource requirements in both the marketing and production departments. what should be his first step in recruiting candidates for the positions? a. conduct background checks of candidates b. make job offers c. arrange interviews d. conduct reference checks e. place job ads on job sites