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11. What Happens when you execute a program? When you execute a program on your UNIX system, the system creates a special environment for that program. This environment contains everything needed for the system to run the program as if…
Read More1. Brief about the initial process sequence while the system boots up. While booting, special process called the ‘swapper’ or ‘scheduler’ is created with Process- ID 0. The swapper manages memory allocation for processes and influences CPU allocation. The swapper…
Read More31. Name two paging states for a page in memory? The two paging states are: The page is aging and is not yet eligible for swapping, The page is eligible for swapping but not yet eligible for reassignment to other…
Read More21. What is “the principle of locality”? It’s the nature of the processes that they refer only to the small subset of the total data space of the process. i.e. the process frequently calls the same subroutines or executes the…
Read More11. What is Fork swap? “fork()” is a system call to create a child process. When the parent process calls “fork()” system call, the child process is created and if there is short of memory then the child process is…
Read More1. What is the difference between Swapping and Paging? Swapping: Whole process is moved from the swap device to the main memory for execution. Process size must be less than or equal to the available main memory. It is easier…
Read More1. How are devices represented in UNIX? All devices are represented by files called special files that are located in /dev directory. Thus, device files and other files are named and accessed in the same way. A ‘regular file’ is…
Read Morehow to insert/update the data from FTP server (CSV File) to Salesforce.com Using some of the few ways its possible: 1) Using salesforce API ( e.g. Java, PHP, .Net APIs ) Using program (JAVA, PHP, .Net) can connect with Salesforce.com…
Read MoreHow to find the domain name server (DNS) using command prompt (CMD) its possible with the help of command prompt option to get the dns (domain name server) and IP Address details and see the below example and screenshot for…
Read MoreWhat is a Shell? Simple Commands Files and Directories Communication Commands Process Commands Text Editors Using Printers X Server and Display Miscellaneous Commands Fun Stuff and Games What is a Shell? A shell is basically the user interface in UNIX.…
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