Exam 15: Linux Operating Systems

Anyone is permitted to copy and distribute verbatim copies of the operating system,including those who want to customize it for release to the public.

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.

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

Linux has system calls that change the size of the process data segment,either by expanding it to accommodate extra data values or reducing it when certain values positioned at the end of the data segment are no longer needed.

Filenames are not case sensitive in Linux.

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

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.

Under Linux filename conventions,the ____ represents the root directory.

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

In Linux,____ devices cannot host a file system.

Linux offers memory protection based on the type of information stored in each region belonging to the address space of a user request.

Virtual memory in Linux is managed using a multiple-level table hierarchy.

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

The Linux page replacement algorithm is an expanded version of the ____ replacement policy.

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.

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.

A page's middle directory contains a pointer to the actual page frame.

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

In Linux,up to a total of 256MB of usable memory can be configured into equal-sized page frames,which can be grouped to give more contiguous space to a job.These groups can also be split to accommodate smaller jobs.The process of grouping and splitting usable memory is known as the ____.