An IPv4 address is typically expressed in what format?

What is the process called that canceled out the magnetic interference with speakers and other devices?

A) Shielding B) Buffering C) Insulating D) RMS

If I write the below command, what does it do? ec2-run ami-e3a5408a -n 20 -g appserver

A. Start twenty instances as members of appserver group. B. Creates 20 rules in the security group named appserver C. Terminate twenty instances as members of appserver group. D. Start 20 security groups