Exam 15: Linux Operating Systems

When Linux allocates memory space,by default it allocates one GB of high-order memory to the kernel and three GB of memory to executing processes.

Virtual memory is implemented in Linux through demand paging.

A file containing data or programs belonging to users is known as a(n)____.

Linux provides the foundation for the ____ operating system.

In Linux device management,the ____ device number is used as an index to the array to access the appropriate code for a specific device driver.

____ management is designed to replace or change parts of the operating system that need to be enhanced or replaced.

Administrators use ____ logs that provide a detailed description of activity on the system.

Linux provides ____ queues and semaphores to allow two processes to synchronize with each other.

The name Linux is a contraction of Linus and UNIX.

When a process requests pages,Linux loads them into memory.When the kernel needs the memory space,the pages are released using a most recently used (MRU)algorithm.

In Linux,each process is referenced by a descriptor,which contains approximately fifteen fields describing the process attributes together with the information needed to manage the process.

Device drivers supervise the transmission of data between main memory and the local unit.

In Linux,the ____ log file stores messages of which systems have successfully started up and shut down,as well as any that have failed to do so.

Linux brought much of the speed,efficiency,and flexibility of UNIX to small desktop computers.

Because Linux is written and distributed under the ____ General Public License,its source code is freely distributed and available to the general public.

In the Linux scheduler,processes with the SCHED_OTHER type have the highest priority.

To keep track of free and busy pages,Linux uses a system of page tables.

Linux terminal management conforms to ____ standards,and it also supports pseudo-terminals.

In Linux,the three levels of file access are ____,____,and ____.

Filenames are not case sensitive in Linux.