UNIX was developed by

Which of the following features of UNIX may be used for inter process communication?

The default permission bits of a file, when it is created for the first time, is controlled by

The file that stores an integer as a sequence of characters is a

In which of the following directories init resides?

The PID of kernel process is

The first thing that is searched when a command references a file is its

Which of the following calls never returns an error?

The technique that allows only one user to work with a file at a particular time is called

Which of the following is used to write disk block images from memory to disk?

Which of the following processes has the PID 1?

Unix was first installed in

A command which transcribes standard input to the standard output & also makes a copy of the same in file, is

Which of the following system calls transforms an executable binary file into a process?

The command that can be used to restrict incoming message to a user is

Which of the following system calls does not return control to the calling point on termination?

PID is used by the system to identify

Which of the following commands is used for an automatic reminder service?

In Bourne Shell, which file sets the UNIX environment for the user when he logs into his Home directory?

The UNIX file system stores a data in physical blocks of

Which of the following commands is used to update 'access & modification times' of a file?

Which command is used to link files?

The seventh field of /etc/password is

Which of the following is not a filter?

Which of the following files contains information related to password aging?