Core Hub
120 examiner-grade questions across DSA, DBMS, OS, Networks, Digital, 8085, Analog, VLSI, Machines, Power Electronics, Fluids, SOM, Thermo, Manufacturing, Surveying, Soil, Concrete, Environment and CRE labs — each with the underlying principle and the trap examiners set.
CSE / IT ECE EEE Mechanical Civil Chemical
What is the difference between an array and a linked list?DSA Lab Why is the time complexity of binary search O(log n)?DSA Lab When would you prefer a hash map over a balanced BST?DSA Lab Explain BFS vs DFS with their data structures.DSA Lab What is the stability of a sorting algorithm, and why does it matter?DSA Lab What is normalization, and what does 3NF eliminate?DBMS Lab Difference between DELETE, TRUNCATE and DROP?DBMS Lab What are ACID properties?DBMS Lab Why does an index speed up queries and when does it hurt?DBMS Lab Explain the difference between INNER JOIN and LEFT JOIN.DBMS Lab What is the difference between a process and a thread?Operating Systems Lab What conditions produce a deadlock?Operating Systems Lab Explain thrashing.Operating Systems Lab Difference between a mutex and a semaphore?Operating Systems Lab What is a context switch and what does it cost?Operating Systems Lab Why is TCP reliable but UDP faster?Networks & Sockets Lab Describe the TCP three-way handshake.Networks & Sockets Lab What is a socket and how does a server accept a connection?Networks & Sockets Lab What layers does data cross when you ping a host?Networks & Sockets Lab What is the difference between DNS resolution and ARP?Networks & Sockets Lab