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:
B and C only
A computer memory system is organised as a hierarchy: registers and cache, then primary (main) memory that the CPU addresses directly, then secondary (auxiliary) storage such as disks that is reached only through I/O and transferred into main memory first.
A — False. The processor accesses primary memory directly, but data on secondary memory must first be brought into main memory; the CPU cannot execute from or address the disk directly.
B — True. Main memory holds the instructions and data of the program under execution.
C — True. Secondary memory is the large, non-volatile backing (backup) store for programs and data not in active use.
D — False. Memory is implemented as a multi-level hierarchy to balance speed, cost and capacity, not as a single level.
Combinations that include A or D contain a false statement.
B and C only 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 :
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:
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.
