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!
Explain the Fork Function
Fork function causes a new process to be created. The calling progress is duplicated as an exact copy (called the child process) that differs only in process IDs and parent IDs. This function returns the chid's process ID to the parent process and a value of 0 to the child process. After that it is possible to distinguish the two process as a result to the fork () call. The child inherits many handles, IDs, and masks from the parent process. The fork is generally used in conjunction with exec () to load or spawn new process. First the fork is initiated to create a new process context, then exec () is used to overlay the child process with a new executable image. execl(execName, arg0,....) The exec family of functions changes the state of the calling process into a new process.
Once executed, exec will replace the currently executing process with one specified by execName. Optionally parameters may be passed to the newly running process as variable-number command line arguments (arg0....) This function is usually used to either replace or overlay an existing running process or in conjunction with the fork () system call to initiate a new process. Once the fork () call is initiated to copy the process, the child process may in turn exec the new process to be executed. The original process is thus still in memory and active, and the child process has become a new executable image specified by exec Name.
A UNIX file system has 1-KB blocks and 4-byte disk addresses. What is the maximum file size if i-nodes contains 10 direct entries, and one single, double, and triple indirect entry
FIFO page replacement This is the easiest page replacement algorithm. At this juncture the 1 st page entering is the 1 st to leave that is the oldest page leaves. To execute
Explain the various types of computer systems. Mainframe systems Large Number of CPU with Greatest Processing Power: Huge Memory Capacity: Increased Performance by s
Optimal page replacement An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that put back the page that will not be us
Grouping Threads That Execute Similar Functions Thread Groups are generally used to group threads that execute similar functions of the application program. For instance, if
Define busy waiting and spinlock. When a process is in its significant section, any other process that tries to enter its critical section must loop continuously in the entry c
what are the threds in operating system?
Q. In what circumstances is a token-passing network more effectual than an Ethernet network? Answer: A token ring is extremely effective under high sustained load as no colli
what are the factors influencing the choice of a mode of transportation?
List three ways of allocating storage, and give advantages of each. a. Contiguous allocation. Fastest, if no changes are to be made. Also simplest for random access files. b
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