1.4 Data Representation and Data Types

Question 1

What are the two different types of data in a packet?

Answer 1

Control information and Actual data

Question 2

What does the control information of a packet include?

Answer 2

Source and Destination Address
Order number of packet
Control signals
Error control bits

Question 3

Where is control information typically found?

Answer 3

The Header and trailer

Question 4

What is a Network collision?

Answer 4

Is a natural occurrence where two sets of data are detected simultaneously

Question 5

What happens after a network collision takes place?

Answer 5

The computer discards the collided packets and waits a short random amount of time before resending the packets

Question 6

Routing

Answer 6

Is the process that determines the path each data packet takes and ensures that packets are delivered to their destination efficiently

Question 7

What is a single bit represented as?

Answer 7

A 1 or 0

Question 8

What is a group of 4 bits called?

Answer 8

Nybble

Question 9

What is a group of 8 bits called?

Answer 9

Byte

Question 10

What is the order of the groups of bytes?

Answer 10

Byte, KiloByte, MegaByte, GigaByte, TerraByte, PetaByte

Question 11

Word

Answer 11

Is a group of bits that can be manipulated as a single unit by the CPU

Question 12

How long are words noramly?

Answer 12

16, 32, 64 or 128 bits

Question 13

How many characters of data can the 7-bit ASCII character set hold?

Answer 13

128

Question 14

How many characters of data can the 8-bit ACII character set hold?

Answer 14

256

Question 15

What is UNICODE?

Answer 15

UNICODE uses up to four bytes to represent each character, this allows it to represent up to 110,000 different characters

Question 16

What are the six different data types?

Answer 16

Character, String, Unsigned Integer, Signed Integer, Real, Boolean

Question 17

Short description of Character data type

Answer 17

A single letter, digit, space, punctuation mark or other symbol

Question 18

Short description of String data type

Answer 18

A group of characters

Question 19

Short description of Unsigned Integer data type

Answer 19

Whole positive number

Question 20

Short description of Signed Integer data type

Answer 20

Whole positive or negative number

Question 21

Short description of Real data type

Answer 21

Fractions or number with decimal points

Question 22

Short description of Boolean data type

Answer 22

True or False

Question 23

What are the uses of floating point form?

Answer 23

Allows for a greater range of positive and negative numbers to be stored in the same number of bits

Question 24

What are the advantages of representing numbers in floating point forms?

Answer 24

There is a greater range of positive and negative numbers can be stored in the same number of bits

Question 25

What are the disadvantages of representing numbers in floating point form?

Answer 25

Numbers aren’t normally stored in completely accurately
They require more complex processing
There is no exact representation of zero

Question 26

What are the advantages of representing numbers in integer form?

Answer 26

They are 100% accurate

Question 27

What are the disadvantages of representing numbers in integer form?

Answer 27

A limited range of numbers that can be represented using the available bits