CMC Company Programming Technical

The system call that is key to multitasking in UNIX
A) Exec
B) Fork
C) System
D) None

Read Solution (Total 1)

File Structure Creating a Channel creat()
Related Calls open()
close()
Input/Output read()
write()
Random Access lseek()
Channel Duplication dup()
Aliasing and Removing link()
Files unlink()
File Status stat()
fstat()
Access Control access()
chmod()
chown()
umask()
Device Control ioctl()

ALL are System call so ans (B)
9 years agoHelpfull: Yes(0) No(1)

CMC Other Question

Which of the following shell variable is used to return the process ID of the current shell?
A) $!
B) $$
C) $*
D) None When a binary tree is traversed in preorder and inorder, the labels of the nodes are printed as below.
Preorder: A B C D E F G H
In order: B C A E G F D H
In what order the nodes appear if the same binary is traversed in post-order?
A) C B G F E H D A
B) C B E G F H D A
C) C B F G E D H A
D) Can’t be decided unless tree representation is given