Exam 13: Unix Operating Systems

The UNIX process scheduling algorithm picks the process that will run in the shortest amount of time to be run first.

UNIX stores files as sequences of bytes and does not impose any structure on them.

The UNIX kernel does not reside in memory permanently;that is,it can be swapped out when needed to provide more space for applications.

The command,____ ,will copy the contents of chapt1 and chapt2 into a file named section_a.

A ____ may occur if an event happens during the process's transition between deciding to wait for the event and entering the WAIT state.

The maximum number of bytes that can be allocated to a single file in UNIX is ____.

UNIX uses the ____ page replacement algorithm.

Subroutines that work with the operating system to supervise the transmission of data between main memory and a peripheral unit are called ____.

The Processor Manager of a UNIX system kernel handles the allocation of the CPU,process scheduling,and the satisfaction of process requests.

There is no return from a successful ____ call.

The ____ command allows the programmer to synchronize process execution by suspending the parent until the child is finished.

IBM and Hewlett-Packard were among the companies that established The Open Group,which still owns the trademark to the name UNIX.

To change to a directory that is up one level from the current working directory in the UNIX hierarchical directory tree structure,you can type ____.

____ is a family of IEEE standards that define a portable operating system interface to enhance the portability of programs from one operating system to another.

The UNIX file management system organizes the disk into blocks of 512 bytes each and divides the disk into four basic regions,the first of which ____.

A terminal has two input queues.As a user types each character to the terminal,it is collected in the ____ queue.

For multiprogramming systems,most UNIX operating systems use either ____ management techniques.

UNIX is designed to provide device dependence to the applications running under it.

In UNIX,a ____ table is allocated to each active process that includes information such as the user and group identification numbers to determine file access privileges.

The original development goals for UNIX were twofold: to develop an operating system that would support software development,and to keep its algorithms as simple as possible.