Arrange the following in the increasing order with respect to access time. A. Solid State Drive B. Optical Disks C. DRAMs D. SRAMs E. Registers Choose the correct answer from the options given below:
E, D, C, A, B
In the memory hierarchy, access time grows as we move away from the CPU, while capacity grows and cost per bit falls.
Registers (E) are inside the CPU and are accessed within a clock cycle (well under 1 ns).
SRAMs (D), used for caches, take roughly 1–10 ns.
DRAMs (C), used for main memory, take roughly 50–100 ns.
Solid State Drives (A), built from flash memory, take tens to hundreds of microseconds.
Optical disks (B) need mechanical rotation and head movement, with access times of the order of 100 ms.
Listing them from the shortest access time gives E, D, C, A, B. The other sequences either start with a slow device (optical disk or SSD) or place registers last, which reverses the hierarchy.
E, D, C, A, B option is correct.
Similar Questions
Various storage devices used by an operating system can be arranged as follows in increasing order of accessing speed :
Find the correct sequence of the storage device in descending order based on their access time.
(A) Registers
(B) Magnetic Disk
(C) Magnetic Tapes
(D) Main memory
(E) Optical Disk
Choose the correct answer from the options given below :
Which of the following statement is/are True?
A. The processor has direct access to both primary and secondary memory
B. Primary memory stores the active instructions and data for the program being executed on the process
C. Secondary memory is used as a backup memory
D. Memory system is implemented on a single level memory
Choose the correct answer from the options given below:
Important Questions from Memory Hierarchy
A computer has a memory hierarchy consisting of two-level cache (L1 and L2) and a main memory. If the processor needs to access data from memory, it first looks into L1 cache. If the data is not found in L1 cache, it goes to L2 cache. If it fails to get the data from L2 cache, it goes to main memory, where the data is definitely available. Hit rates and access times of various memory units are shown in the figure. The average memory access time in nanoseconds (ns) is ________. (rounded off to two decimal places)
- Match List I with List II
List I List II A. Address Space I. Associative Mapping B. Memory Space II. Logical address C. Cache Memory III. physical address D. Segmented Program IV. Virtual address
Choose the correct answer from the options given below: - What unit of memory is largest out of the following?
Related to computers, what is 'Wetware'?
____ number of lines are required to select __________ memory locations.
