List of top DBMS Questions on Lock asked in GATE CS

For a direct-mapped cache, 4 bits are used for the tag field and 12 bits are used to index into a cache block. The size of each cache block is one byte. Assume that there is no other information stored for each cache block. Which ONE of the following is the CORRECT option for the sizes of the main memory and the cache memory in this system (byte addressable), respectively?

An application executes \( 6.4 \times 10^8 \) number of instructions in 6.3 seconds. There are four types of instructions, the details of which are given in the table. The duration of a clock cycle in nanoseconds is ___________. (rounded off to one decimal place) \begin{center} \begin{tabular}{|c|c|c|} \hline Instruction type & Clock cycles per instruction (CPI) & Number of instructions executed
\hline Branch & 2 & \( 2.25 \times 10^8 \)
Load & 5 & \( 1.20 \times 10^8 \)
Store & 4 & \( 1.65 \times 10^8 \)
Arithmetic & 3 & \( 1.30 \times 10^8 \)
\hline \end{tabular} \end{center}