Answer: Unified communication
Explanation: Unified communication is the communication technique in which merges various communication routines into a individual business.It works as the phone system which helps in increment of productivity in an organizational business.
The unifying of voice,data/information,video etc is done for optimizing and improving the business that also results in faster communication rates, secure communication etc.
#1 is A and #2 is B, but I don't know about #3 and #4.
Answer:
An overhead projector: requires slides to project images
A laptop: requires an external monitor to project high-resolution images
A computer: requires a CD-ROM drive to run presentation CDs
An external monitor: requires a port to connect to the laptop
Explanation:
The correct pair has been formed above. An overhead projector requires the slides for projecting images. A Laptop for projecting high-resolution images requires an external monitor. And a computer requires a CD-ROM drive for running presentation CDs, and an external monitor requires a port to a port which can be an HDMI port to connect to a laptop.
