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Q. Illustrate the Cache Memory Operation?
It comprises a copy of a part of main memory contents. When a program is running and CPU tries to read a word of memory (instruction or data) a check is made to decide if word is in cache. If so that word is delivered to CPU from cache. If not then a block of main memory comprising some fixed number of words including requested word is read in the cache and then requested word is delivered to CPU. Due to the feature of locality of reference when a block of memory word is fetched in cache to satisfy a single memory reference it is expected that there will soon be references to other words in that block. Which is the next time CPU attempts to read a word it's very probable that it finds it in cache and saves time required to read word from main memory.
Various computer systems are designed to have two separate cache memories known as data cache and instruction cache. Instruction cache is used for storing program instruction and data cache is used for storing data. This allows faster identification of availability of accessed word in cache memory as well as it helps in further improving processor speed. Several computer systems are also designed to have multiple levels of caches (like level one and level two caches generally referred to as L1 and L2 caches). L1 cache is smaller than L2 cache and is used to store more often accessed data/instruction as compared to those in L2 cache.
What are the central interfaces of the R/3 system? There are three central interfaces:- Presentation Interface. Database Interface. Operating system Interface.
Addresses are basically for virtually everything we do on Internet. The IP in TCP/IP is a mechanism for providing addresses for computers on Internet. Internet addresses have two f
Enumerate about the trackball A trackball is a two-dimensional positioning device, a spaceball provides six degrees of freedom. Unlike the trackball, a spaceball does not actua
Why Build and fix model is considered as ad-hoc software development model?
Minimise the logic function F (A, B, C, D) = Π M (1, 2, 3, 8, 9, 10, 11,14) ⋅ d (7, 15) Use Karnaugh map. Ans. Given function F=∏M(1,2,3,8,9,10,11,14).d(7, 15) F'=B'D+B'C+AC+AB'
The number of control lines for 16 to 1 multiplexer is ? Ans. We have 16 = 2 4 , 4 Select lines are needed.
Explain Direct or Indirect Communication in Inter-process communication. Several types of message passing system in Direct or Indirect Communication are given below:
Q. Show Two Way Pipelined Timing? Figure below demonstrates a simple pipelining scheme in which F and E stages of two different instructions are performed concurrently. This sc
Security Analysis: Suppose you are a young securities analyst, working in a small brokerage firm. You have access to publicly available information relevant to valuation of th
Advantage 1. By doing threading we neglect the recursive method of traversing a Tree , which makes use of stack and consumes many memory and time . 2. The node
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