thie question has 4 parts **a. Which of these describes the behavior of `wait()`?**1. Terminates the calling process2. Blocks the calling process until one of its children terminates3. Blocks until input from the terminal arrives4. Blocks the calling process until all of its children have terminated**b. It is best to use `malloc()` to allocate space for an array when**1. You want to avoid the possibility of buffer overflow2. You don’t know the needed size until runtime, and it may vary a lot3. A function needs to return a pointer to the array4. The array must be read-only**c. Three methods of communication between parent and child processes are…**1. `signal()`, `pause()`, and `wait()`2. `open()`, `dup2()`, and `lseek()`3. Wi-Fi, cellular, and cable4. pipes, signals, and environment variables**d. If a process forks and the parent terminates before the child,**1. the child is forcibly terminated by the OS2. the OS delivers `SIGPARENT` to the child3. the “init” process (#1) adopts the child and is made its parent4. the child is put in a kernel data structure called the “orphanage”

wait() function does wait for the child process to complete and suspends any calling process in…

a. Which of these describes the behavior of wait ()? (1) Terminates the calling process (2) Blocks the calling process until one of its children terminates (3) Blocks until input from the terminal arrives (4) Blocks the calling process until all of its children have terminated b. It is best to use malloc() to allocate space for an array when (1) You want to avoid the possibility of buffer overflow (2) You don't know the needed size until runtime, and it may vary a lot A function needs to return a pointer to the array (3) (4) The array must be read-only c. Three methods of communication between parent and child processes are ... (1) signal(), pause (), and wait () (2) open (), dup2(), and 1seek () (3) Wi-Fi, cellular, and cable (4) pipes, signals, and environment variables

a. Which of these describes the behavior of wait ()? (1) Terminates the calling process (2) Blocks the calling process until one of its children terminates (3) Blocks until input from the terminal arrives (4) Blocks the calling process until all of its children have terminated b. It is best to use malloc() to allocate space for an array when (1) You want to avoid the possibility of buffer overflow (2) You don't know the needed size until runtime, and it may vary a lot A function needs to return a pointer to the array (3) (4) The array must be read-only c. Three methods of communication between parent and child processes are ... (1) signal(), pause (), and wait () (2) open (), dup2(), and 1seek () (3) Wi-Fi, cellular, and cable (4) pipes, signals, and environment variables

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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