INT-1700 Study Guide #3 (True/False)
A DVD with a fast data transfer rate will drop fewer frames when playing back a recorded video segment than will a unit with a slower transfer rate.
true
Directories are special files that contain listings of filenames and their attributes.
true
In recent Windows operating systems, almost all low-level I/O operations are asynchronous.
true
Linux brought much of the speed, efficiency, and flexibility of UNIX to small desktop computers.
true
Linux is an open-source program.
true
To ensure the integrity of the Windows operating system code, the designers separated operating system functions into a privileged executive process and a set of nonprivileged processes called protected subsystems.
true
To keep track of free and busy pages, Linux uses a system of page tables.
true
To support text compression, data in a fixed-length field that includes a short name followed by many blank characters can be replaced with a variable-length field and a special code to indicate how many blanks were truncated.
true
When using a contiguous file storage scheme, the File Manager keeps track of empty storage areas by treating them as files.
true
A field is a group of related records that can be identified by the user with a name, type, and size.
false
Device management principles are changing rapidly to accommodate cloud computing.
false
In a file directory tree structure, the "leaves" of the tree are subdirectories created by the user.
false
A file extension is usually two to four characters in length and is separated from the relative name by a period.
true
The I/O Manager allows device drivers and file systems, which it perceives as device drivers, to be loaded dynamically based on the needs of the user.
true
The SMB protocol is a high-level specification for formatting messages to be sent across the network and correlates to the application layer (layer 7), and the presentation layer (layer 6) of the OSI model.
true
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.
true
A compressed image file can be reconstructed if a lossy compression algorithm is used because the compression process is reversible.
false
A driver object can only have one device connected to it.
false
A group known as Redhat Software has responsibility for the open-source development of the Linux kernel.
false
A page's middle directory contains a pointer to the actual page frame.
false
A path name can be either one name or a list of names separated by dashes.
false
A seek strategy for an I/O device handler is the predetermined policy that the device handler uses to allocate access to the device among the many processes that may be waiting for it. It determines the order in which the processes get the device; the goal is to keep transfer time to a minimum.
false
A volume must contain a single file.
false
An indexed sequential file does not have overflow areas.
false
An optical disc drive spins at a constant speed—this is called constant linear velocity.
false
Device drivers supervise the transmission of data between main memory and the local unit.
false
Effective distributed security requires an authentication mechanism that allows a server to prove its identity to a client.
false
Filenames are not case sensitive in Linux.
false
Files cannot be converted from sequential to direct or vice versa.
false
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.
false
In a file management system, information is passed from the Device Manager at the top of the hierarchy to the File Manager at the bottom.
false
In the Linux scheduler, processes with the SCHED_OTHER type have the highest priority.
false
LDAP is the hierarchical replicated naming service on which the Internet is built.
false
Linux offers memory protection based on the type of information stored in each region belonging to the address space of a user request.
false
Linux was developed by Dennis Ritchie, who wanted to create an operating system to maximize the limited capabilities of the Intel 80386 microprocessor.
false
Much of Windows is written in assembly language, a programming language that's standardized and readily available.
false
Seek time is the most important characteristic of a fixed-head disk drive.
false
The File Manager responds to the CREATE command by creating a new file.
false
The Open Mode attribute for a file indicates whether other callers can open the file for read, write, or delete operations while this caller is using it.
false
The Shortest Seek Time First device-scheduling algorithm moves the arm methodically from the inner to the outer track, servicing every request in its path.
false
The job of the I/O control unit is to keep up with the I/O requests from the CPU and pass them down the line to the appropriate control unit.
false
The lower half of the virtual address space is accessible only to kernel-mode processes.
false
Two of the most important measures of optical disc drive performance are sustained data-transfer rate and maximum access time.
false
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.
false
When a user gives a command to modify the contents of a file, it's actually a command to access folders within the file.
false
When using DMA, the CPU controls the transfer of data to and from memory over the system bus.
false
Windows XP was the last Windows operating system built on the Windows 95 kernel.
false
Windows is a non-preemptive multitasking, multithreaded operating system.
false
Within a file, variable-length records are easier to access directly than fixed-length records.
false
A replacement paging policy determines which virtual page must be removed from memory to make room for a new page.
true
A subdirectory is created when a user opens an account to access the computer system.
true
All Linux files are organized in directories that are connected to each other in a tree-like structure.
true
Although noncontiguous allocation schemes eliminate external storage fragmentation and the need for compaction, they don't support direct access because there's no easy way to determine the exact location of a specific record.
true
At the operating system level, file mapping is typically used for file caching, loading, and running executable programs.
true
Before the 1995 release of the Windows 95 operating system, all Windows products were merely graphical user interfaces that required the MS-DOS operating system to perform tasks.
true
Blu-ray discs are available in several formats: read-only (BD-ROM), recordable (BD-R), and rewritable (BD-RE).
true
Buffers are used to synchronize the movement of data between the relatively slow I/O devices and the very fast CPU.
true
Direct access storage devices (DASDs) are devices that can directly read or write to an arbitrary place on a disk.
true
First-come, first-served (FCFS) is the simplest device-scheduling algorithm it is easy to program and essentially fair to users
true
If the File Manager is required to provide detailed instructions for each system device (how to start it, get it to move to the correct place where the desired record is located, and when to stop), then the program is considered device dependent.
true
In the N-Step SCAN device-scheduling algorithm, any requests that arrive while the arm is in motion are grouped for the arm's next sweep.
true
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.
true
Many systems force users to have their files organized for fixed-length records if the records are to be accessed directly.
true
Multithreading improves database searches because data is retrieved faster when the system has several threads of execution searching an array simultaneously, especially if each thread has its own CPU.
true
Nested RAID levels, also called hybrid levels, are complex RAID configurations created by combining multiple standard levels.
true
One of the biggest concerns about Windows operating systems is the need for aggressive patch management to combat the many viruses and worms that target these systems.
true
RAID Level 0 is not considered a true form of RAID because it cannot recover from hardware failure.
true
Recent Windows operating systems provide distributed security with Kerberos, which provides authentication, data integrity, and data privacy.
true
Sequential record organization is by far the easiest to implement because records are stored and retrieved serially, one after the other.
true
The name Linux is a contraction of Linus and UNIX.
true
The primary file handling concept in recent versions of Windows is the virtual file.
true
The secure log file contains lists of all attempts to log in to the system, including the date, time, and duration of each access attempt.
true
The universal serial bus (USB) controller acts as an interface between the operating system, device drivers, applications, and the devices that are attached via the USB host.
true
There are many more sectors on an optical disc than on a magnetic disk of the same area.
true
Virtual memory in Linux is managed using a multiple-level table hierarchy.
true
Virtual memory is implemented in Linux through demand paging.
true
A relative filename is a name that is selected by the File Manager when the file is created.
false
One disadvantage of Windows is that it does not provide much support for users working in non-English languages.
false
RAID begins with the assumption that a small set of large-capacity disk drives is preferable to a larger set of small-capacity disk drives.
false
RAID is a set of logical disk drives, viewed as a single physical unit by the operating system.
false
