13 chapter

What is a user-defined data type in programming?

• A data type defined by the programming language itself

• A data type that is specifically designed for user input

• A data type created by the programmer to meet specific requirements

• A built-in data type for storing user information

What is the primary advantage of using user-defined data types in programming?

• Improved performance

• Reduced code complexity

• Enhanced data security

• Better code readability and modularity

What is an enumeration type?

• A user-defined data type

• A pointer type

• A floating-point type

• A structure type

Which file organization is suitable for retrieving ordered data?

• Sequential file

• Random file

• Indexed file

• Linked file

The main advantage of a sequential file is:

• Fast data retrieval

• Efficient insertions and deletions

• Data arranged in logical order

• Support for random access

Which file organization is suitable for storing log files in chronological order?

• Sequential file

• Random file

• Indexed file

• Hashed file

Which file organization is suitable for storing log files in alphabetical order?

• sequential

• serial

• random

• indexed sequential

In a gallery containing numerous image files, which file organization allows for quick retrieval of specific images?

• Sequential file

• Random file

• Indexed file

• Hashed file

Real numbers are stored in a computer system using floating-point representation with:
-10 bits for the mantissa
-6 bits for the exponent
-Two's complement form for both the mantissa and the exponent

Calculate the normalised floating-point representation of -7.25 in this system.

Choose the correct Mantissa part and Exponent part.

• 1000110000

• 0001100000

• 000010

• 000011

Rounding Errors always happen in Floating Binary Number, such as 0.3. List the causes below.