____, the precursor to the Internet, appeared in ____.?

The Define Name button will create a group of cells that are associated with a(n):

A) cell format. B) range name. C) cell value. D) cell formula.

If host A is able to successfully ping router R1 but not router R2, which of the following is guaranteed?

A) Port security is not filtering frames sent between host A and R1. B) Port security is filtering frames sent by R2. C) R2 itself is down. D) STP has not placed the right ports in a forwarding state.