Answer:
Windows notification and action settings
Explanation:
Notification and action settings is a system settings as well as a notification utility that enables quick or easy access to settings for a number of items or features.
The items include network, tablet mode, mobile hotpot, night light, brightness, Bluetooth, airplane mode, all settings, VPN, focus assist, location, project and connect. It is important to note that all the listed items can be found in the notification and action settings of a windows 10 computer.
A pro of HCI technology is that its user friendly and a con about it is that you have to teach the user what to do or guide them!
It is usually .doc but if you use notepad, (the free version of Word) it's .docx
Answer:
a) Speedup gain is 1.428 times.
b) Speedup gain is 1.81 times.
Explanation:
in order to calculate the speedup again of an application that has a 60 percent parallel component using Anklahls Law is speedup which state that:

Where S is the portion of the application that must be performed serially, and N is the number of processing cores.
(a) For N = 2 processing cores, and a 60%, then S = 40% or 0.4
Thus, the speedup is:

Speedup gain is 1.428 times.
(b) For N = 4 processing cores and a 60%, then S = 40% or 0.4
Thus, the speedup is:

Speedup gain is 1.81 times.
It is to avoid plagiarizing someone else's work