Answer: A file is the common storage unit in a computer, and all programs and data are "written" into a file and "read" from a file. A folder holds one or more files, and a folder can be empty until it is filled. A folder can also contain other folders, and there can be many levels of folders within folders.
Explanation:
Answer:
Yahoo! mail
Explanation:
In the context, Dona travels most often around the world. While traveling, she has to access her emails from different location and at different times. But in order to keep her luggage light, she never carries the laptop with her. Therefore, Donna uses Yahoo! mail to access her emails.
Donna uses Yahoo mail because she can install the Yahoo! mail app in her phone or tablets which is small in size and of light weight. She is able to organize her Outlooks, Google mails and Yahoo accounts. In Yahoo! mail, Donna is also able to sign in with her any of the non yahoo accounts and it also provides free cloud storage space.
1. B joint application design
2. A it is necessary to write most of the new code manually
3. D since users have been involved in the pro typing, managers can be confident that the system can handle large numbers of users
4. B extreme programming
5. C code that is produced using OOD is easy to secure
6. A more testing is preferable to less testing
7. C object-oriented development
8. D component-based development
9. A object
10. B the code can only represent information as objects
