AS Associate Degree In Computer Science 2

Question 1

Which data structure uses LIFO (Last In, First Out) order?

Accepted Answer

Stack

Answer

A stack follows LIFO order, meaning the last element added is the first one removed.

Question 2

In Python, what does the 'len()' function return for the string 'hello'?

Accepted Answer

5

Answer

'hello' has 5 characters, so len('hello') returns 5.

Question 3

Which SQL clause is used to filter results after grouping?

Accepted Answer

HAVING

Answer

HAVING filters grouped results, while WHERE filters individual rows before grouping.

Question 4

What is the worst-case time complexity of bubble sort?

Accepted Answer

O(n²)

Answer

Bubble sort compares each pair of adjacent elements repeatedly, resulting in O(n²) worst-case complexity.

Question 5

Which layer of the OSI model handles IP addressing?

Accepted Answer

Network

Answer

The Network layer (Layer 3) is responsible for logical IP addressing and routing.

AS - Associate In Science Degrees Practice Test