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What is the difference between main and auxiliary memory?
The major difference between main memory and auxiliary memory is that main memory is directly accessed by CPU but the auxiliary memory is not accessed by the CPU directly.For this the data is first transferred to main memory from auxiliary memory and then from main memory the data is transferred to the CPU for further processing. Answered By: Richa Singh
What is the difference between primary key and secondary key?
There is two difference between them. 1. The not null constraint is by default added to primary key, it means, primary key attribute cannot accept null values, whereas, the attribute declared as unique can accept null values. It is the major difference between the two. 2. Secondly, we can have only one primary key in a relation, whereas, multiple attributes can be declared unique at the same time.
What is auxiliary memory give an example of auxiliary memory?
The major difference between main memory and auxiliary memory is that main memory is directly accessed by CPU but the auxiliary memory is not accessed by the CPU directly.For this the data is first transferred to main memory from auxiliary memory and then from main memory the data is transferred to the CPU for further processing. Some examples of auxiliary memory would be disks, external hard drives, USB drives, etc.
Is CPU directly addressable by the memory?
Yes, the CPU is directly addressable by the memory.
Does rom a primary storage?
Yes. ROM (Read Only Memory) is a primary memory. BIOS is a Read Only Memory and is directly accessed by the cpu just like RAM (Random Access Memory). So it is a primary storage.
What are the disadvantage of primary storage?
Well for mac you can only back up your data when you have a secondary storage hard drive, for windows it gives you more space to download and to use it, basic
What are the organization that use the magnetic disk as secondary storage device?
Um, your question doesn;t make much sense.. Secondary storage in normally considered your computers hard drive, a flash drive, floppy disc and the like. Things that don't lose data when turned off. Primary storage (like system memory)is accessed directly by your CPU, secondary storage is normally accessed through some soft or I/O device.
Is cache memory a form of read only that can be accessed more quicky by the CPU?
yes
What is the function of CPU cache?
Many CPUs have what is known as a CPU cache. The function of this CPU cache is to speed up access to data.
What type of memory is integrated directly into the CPU chip to provide fast access to data?
The type of memory integrated directly into the CPU chip for fast access to data is called cache memory. Cache memory is designed to store frequently accessed data and instructions, allowing the CPU to retrieve them more quickly than if it had to access data from the main RAM. It typically consists of multiple levels (L1, L2, and sometimes L3), with L1 being the fastest and located closest to the CPU cores. This speeds up processing and enhances overall system performance.
Why is the secondary memory called the external memory?
Secondary memory is often referred to as external memory because it is not directly accessible by the CPU and is typically located outside the primary storage (RAM). This type of memory includes devices like hard drives, solid-state drives, and USB drives, which store data persistently even when the power is off. Unlike primary memory, which is fast and temporary, secondary memory offers larger storage capacity and retains data long-term. Thus, it serves as an external repository for data and applications that the CPU can access as needed.
What are the chrcharacteristics of group of memory hierarchy at each level?
Registers: Fastest and smallest memory, typically located within the CPU for immediate access to data. Cache: Small and faster memory located close to the CPU, used to store frequently accessed data for quick retrieval. Main Memory (RAM): Larger and slower memory that holds data and instructions currently being processed by the CPU. Secondary Storage (Hard Drive, SSD): Largest and slowest memory that stores data persistently, even when the device is powered off.
