Answer:
An operating system can be categorized according to both the given options. Thus answer is option C
Explanation:
An operating system should support multiple logins. Because the login plays a major role and that is the need and mainly in the organization where one system will be shared by multiple users. Also, Operating system should perform multi-tasking. This efficiency is required so that the user completes the work very faster and he need not wait to go for the next task.
For example an operating system handles user’s task, background tasks, keep track of the status of the devices, allots output device to the requested user and so on.
Answer:
consumer-to-consumer auction site
Explanation:
The best type of purchase for this scenario would be a consumer-to-consumer auction site. These sites allow anyone to make a publication selling their product. This publication can be seen by anyone around the world. It is the best way of finding the cheapest prices for a specific item. The condition of the items on these sites can vary. The majority of the time they are used items in good conditions, but can also be new items or very worn out items being sold for parts.
I'd guess around 60-70 years possibly 55