Data Types

Question 1

what is a character set?

Answer 1

The set of symbols that may be represented in a computer at a particular time

Question 2

why do we use hexiecimal?

Answer 2

• hexiedecimal is much easier to read and remember
  -it is quicker to write and type
  -less chance of making an error

Question 3

what is ASCII

what is a MAC address

Answer 3

American standard code for information interchange

The address of a network Card

Question 4

what is UNI cod

whats an advantage of UNI code?

Answer 4

a standard character set that replaces the need for all different sets. it incorporates almost all characters in the world

• every language in the world, every mathematical and scientific symbol can be represented.

Question 5

what is
1+1+1
1+1
0+1
0+0

Answer 5

1+1+1= 1 carry 1
1+1= 0 carry 1
0+1=1
0+0=0

Question 6

what is referntial integrity ?

Answer 6

referential integrity refers to the relationship between tables , and provides consistency through the tables