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Name and explain the popular techniques to identify free memory areas as a result of allocation and de-allocations in a heap.
Two well-liked techniques to identify free memory areas like a result of allocation and de-allocations in a heap are as:
1. Reference count: the system relates a reference count with each memory area to show the number of its active users. This number is incremented while a user accesses such area and decrements while user stops using it. The region is free if the reference counts drops to zero. Such scheme is very simple to implement although incurs incremental overheads.
2. Garbage collection: In such technique two passes are done over the memory to identify unused areas. Into the first pass this traverses all pointers pointing to assigned areas and marks the memory areas which are in use. The second pass determines all unmarked areas and declares them to be free. Its overheads are not incremental. They are incurred all time the system runs-out of free memory to assign to fresh requests.
Explain briefly the function of different layers which are covered under end to end layer connectivity. Different layer are as follows: 1. Transport Layer: This is res
What are parity generator and checker? Ans: While a digital signal is transmitted, this may not be received correctly through the receiver. At the receiving end this may o
Q. Register-to-register operands in RISC? Register-to-register operands: In RISC machines operation which access memories are LOAD and STORE. All other operands are kept in reg
processor, computer science
You were offered bonus marks for separating the user interface code from the main logic of your program. This design choice makes it very easy to replace the user interface without
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Define memory cycle time? It is the time delay needed between the initiations of two successive memory operations. Eg. The time among two successive read operations.
Windy Grid World This assignment is to use Reinforcement Learning to solve the following "Windy Grid World" problem illustrated in the above picture. Each cell in the image is a
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CGI is significant whenever you require to retain state information about a user, or run an application which communicates with the server. Things like guestbook's, Chat clients, d
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