Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
Before proceeding with its execution, each process must acquire all the resources it needs is called ? Ans. Hold and Wait is requires in each process should acquire all the res
The Environment variable SCRIPT_NAME in CGI script specifies? In CGI script gives the path of URL after server name.
Give difference between compiler and interpreter. Compiler: It is a translator for machine independent HLL as FORTRAN and COBOL etc. Interpreter: It analysis the source
Generic Techniques Developed: In the pursuit of solutions to various problems in the above categories, various individual fundamental techniques have sprung up which have been
What is Linear Addressing Mode. Ans. Linear Addressing: Addressing is the procedure of selecting one of the cells in a memory to be written in or to be read from. So as to fa
What is View? A simple view can be thought of as a subset of a table. It can be used for retrieving data, as well as updating or deleting rows. Rows updated or deleted in the v
Q. Describe Set-Associative Mapping? A third type of cache organization known as set-associative mapping is an improvement on direct mapping organization in that every word of
What are interacting processes? Interacting processes: The concurrent processes executing into the operating system are cooperating or interacting processes if they can be af
1. M - Model 2. V - View 3. C - Controller
Q. How are the instructions executed and interpreted? All computers have a Unit which performs arithmetic and logical functions. This Unit is called as Arithmetic and Logic Uni
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd