Question 1

What is the difference between an array and a linked list?

Accepted Answer

An array stores elements in contiguous memory with O(1) indexed access, while a linked list stores elements as separate nodes with pointers, giving O(1) insertion at a known position but O(n) access.

Question 2

What do the four ACID properties of a transaction guarantee?

Accepted Answer

Atomicity, Consistency, Isolation, and Durability — a transaction is all-or-nothing, keeps the database valid, is isolated from other concurrent transactions, and survives a crash once committed.

💻 CS & Programming FundamentalsInterview Questions

💻 CS & Programming Fundamentals
Interview Questions