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
Every hexadecimal digit represents 4 bits, so the address has 128/4 = 32 digits.
A GUID (Globally Unique IDentifier) has 128 bits. They are usually written like this:
{38a52be4-9352-4<span>53e-af97-5c3b448652f0}.</span>
There are different types of guids, depending on how they are generated. The first digit of the third group reveals the type. In the example above it is 4. A type 4 guid is fully random (except of course for the 4).
Answer:
Wi-Fi(Wireless fidelity) is the networking technology that helps in providing the internet connectivity to the users. The Wi-Fi is all around the surrounding due to several Wi-Fi connections the users demand and use. It creates the networking environment where internet access becomes easy.
There are drawback to Wi-Fi service range that covers a large area is the high number of users.The addition of many users slow down the data rate and accessing .The radiation from this service is also a negative side of the Wi-Fi pervasiveness.
Answer:
The answer is "Option A".
Explanation:
A comprehensive collection of principles, guidelines, proposals, and studies on information and information systems privacy and safety are produced and carried out in the NIST publications.
- The FIPS management standards for federal information and security laws contain various technical reporting sequences.
- This process takes place after a plan is identified, reviews are carried out and risk analysis is performed.
