Quick Revision Flashcards
Click any card to flip it and reveal the answer. Filter by subject below.
OS • formula
Average Seek Time formula concept?
Click card to reveal answer
Answer Revealed
Seek Time = Total Head Movement * Seek Time per cylinder. Round trip is calculated based on current head pointer.
Click again to flip back
OS • mnemonic
What are the 4 conditions for a deadlock?
Click card to reveal answer
Answer Revealed
Mutual Exclusion, Hold and Wait, No Preemption, and Circular Wait (Mnemonic: M-N-H-C).
Click again to flip back
C • concept
Size of pointer on 64-bit OS?
Click card to reveal answer
Answer Revealed
Always 8 bytes (64 bits), regardless of variable types (char*, int*, double*).
Click again to flip back
DBMS • formula
Condition for 3NF Normal Form?
Click card to reveal answer
Answer Revealed
For X -> Y, either X is a Super Key or Y is a Prime Attribute.
Click again to flip back
DBMS • concept
Condition for BCNF (Boyce-Codd Normal Form)?
Click card to reveal answer
Answer Revealed
For every functional dependency X -> Y, X must be a Super Key.
Click again to flip back
C • concept
Precedence order of prefix ++ vs dereferencing *?
Click card to reveal answer
Answer Revealed
Dono unary operators hain with right-to-left associativity. Prefix ++ holds higher priority than * in some compiler formats, evaluate from right to left.
Click again to flip back