[Q.96] Which scheduling policy allocates CPU time slices (quanta) in a circular order?
Round Robin gives equal time quantum to each ready process in round-robin sequence.
[Q.97] What does the volatile keyword in C indicate to the compiler?
volatile tells compiler not to optimize away reads/writes because value can change externally.
[Q.98] What is the difference between TRUNCATE and DELETE in SQL?
TRUNCATE is faster DDL that deallocates pages; DELETE logs row removals.
[Q.99] Which encryption mode in block ciphers uses the output of the previous ciphertext block XORed with the current plaintext block?
In CBC, each plaintext block is XORed with previous ciphertext block before encryption.
[Q.100] In Computer Architecture, what is 'Cache Hit Ratio'?
Hit ratio = Hits / (Hits + Misses).