System Programming MCQs

Which command can be used to list all the active TCP connections only on a Linux system?

Which ksh trap sequence causes the function 'handler' to be executed when the script exits?

How many bytes of a file of size 1023 will be read by the following piece of code?

Effect of setting the 'sticky' bit on an application's executable image?

A C program 'domath.c' utilizes the math library. Which command correctly creates the corresponding executable 'domath'?

What does the line #define S_IRWXG 0000070 relate to?

You want a char * that will contain the timestamp as YYYYMMDD-hh:mm:ss . You would use:

Which of the following is an advantage of using pipes over shared memory for interprocess communication?

The following code is written to be accessed by multiple detached threads. : const char * c; char * d; : /* no lock and no mutex is used in any way here */ my_print_func (c, &d); : Which one of the following will happen when this code is re-entered by multiple threads?

When there are more fork() calls than wait() calls, which of the following is created?