Answer:
False
Explanation:
When an employee becomes the one responsible for the security of His own computer then the scenario does not define Network security. Network security is a usage of hardware and related software to provide protection to the underlying network architecture from unauthorized access and other anomalies related to networks.
Answer:
a) We know that atleast one or more author writes a book.
Symbol to indicate one or more is (B)
So the correct option is B
b) We know that zero to multiple books are written by any author.
Symbol to indicate zero or more is (A)
So the correct option is A
c) The fourth option is correct if we replace by many to many relationship and generate a new entity.
So the relationship betweem author and contract is one to many. So we know that there is atleast one author that represent in symbol d and books has atleast 0 that represent in symbol c.
So Fourth Option is correct d at blue side and c at red side.
d) There are two forirgn keys in table Contract one is from AuthorId and other is ISBN.
So correcct option is C
Explanation:
it can take up a great deal of time in class.
it can be distracting in the middle of a lecture.
it can cause the student to miss information.
Answer:
Opportunity cost refers to what you have to give up to buy what you want in terms of other goods or services. When economists use the word “cost,” we usually mean opportunity cost.
Explanation:
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