Answer:
Microsoft Excel is a spreadsheet program. It provides a grid interface to organize the various information. You can use Excel to create and format workbooks in order to analyse the data. Specifically, you can use Excel to track data, build models for analysing data, write formulas to perform calculations on that data, pivot the data in various ways, and present data in a variety of professional looking charts. Excel is used widely in financial activity. It has the ability to create new spreadsheets where users can define custom formulas for the calculation. Excel is also used widely for common information organization and tracking like a list of sales leads, project status reports, contact lists, and invoicing. Excel is also useful tool for scientific and statistical analysis with large data sets.
Answer:
Option D i.e., Backdoor is the correct answer.
Explanation:
Because backdoor is the virus that attack on the user's computer to provide unauthorized access to the hackers and it is very hard to detect, and in the following statement an issue occurred on the Ann's computer system when she open an invoice which is sent by any vendor then, several security warning appears on her system. So, that's why the following option is correct.
It is True because we can create the text file, move it around and rename it, although there is no option for deletion so it is better to put it in another folder.
Answer: Request for Comments(RFC)is an official document containing methods, behaviors, research, internet specifications, protocols in systems connected to the internet.
RFC are produced by computer scientist , experts in the field of networking, protocols who author them and then send for approval from Internet Engineering Task Force(IETF). After there approval it is then assigned a serial number after which it cannot be modified.
Explanation:
RFC is an official document to propose and bring out new changes in the field of engineering and communication.
Once RFC has been produces it can also bring out modifications in the form of amendments.