Explanation:
Monitoring someone's emails,voice mails and computer files is considered is illegal because you are accessing someone's personal information which is not regarded as ethical .
There are certain reasons where one's email,voice mails and computer files can be monitored are as following:
- Protect the security information and security.
- Investigation of complaints of harassment.
- Preventing personal use of employer's facilities.
Answer: a) 
(b) 
(c) 
(d) 
Explanation:
The formal description of the given sets are as follows :-
a) The set containing the numbers 5, 9, and 27.
(b) The set that contains all the natural numbers less than 2.
(c) The set containing the empty string.
We know that in formal description, the empty string is denoted with 
.
Thus, the required set :
(d) The set containing nothing at all.
Answer:
B.
Explanation:
Metadata is a type of data that dispense details of other data. In simple terms, metadata can be defined as information of a file such as file name, attributes, etc.
<u>In excel sheet, metadata works the same and helps to provide information about </u><u>file name, author name, file size, attributes such as read-only, archieve, hidden, system, location of the file, date and time of creation, modification, or accessed, type of file, etc</u><u>.</u>
From the given options, the information that is not considered or included in metadata is calculation inside the file. Metadata in excel sheet does not include calculations inside the file. Thus option B is the correct answer
To short letters to send worldwide.
