#1) An important task that the operating system performs is ____, which keeps track of the files stored on a computer so that they can be retrieved when needed.
Answer: File Management System. Keeps track of where files are stored and determines how the files are stored following the operating system file allocation policies. It uses available storage space efficiently for files and creates a record/log of all file usage. It allocates a file to a user if is free, and if they are permitted access to it. Then de-allocates file when the user is finished with it.
Explanation is in the file
tinyurl.com/wpazsebu
Answer:
4
Explanation:
Relative Biological Effectiveness (RBE) =
Standard Radiation dose / Test Radiation dose
for achieving the same biological effect.
The absorbed radiation dose is measured in units of Gyt(Gray in tissue).
In the given scenario, Standard radiation dose of 250 KVp X-rays = 16 Gyt
Corresponding Test Radiation dose = 4 Gyt
Therefore, Relative Biological Effectiveness = 16/4 = 4
<span>Polymorphic message
Methods in different classes with a similar function are given the same name.
- Makes classes easier to use because programmers need to remember fewer method names.
- Employed as much as possible.
- Polymorphic message ex. is the toString method.</span>
