Operating Systems: Internals and Design Principles (7th Edition)

Operating Systems: Internals and Design Principles (7th Edition)

Language: English

Pages: 816

ISBN: 013230998X

Format: PDF / Kindle (mobi) / ePub

Operating Systems: Internals and Design Principles, 7e is ideal for introductory courses on operating systems.

Operating Systems: Internals and Design Principles provides a comprehensive and unified introduction to operating systems topics. Stallings emphasizes both design issues and fundamental principles in contemporary systems and gives readers a solid understanding of the key structures and mechanisms of operating systems. He discusses design trade-offs and the practical decisions affecting design, performance and security. The book illustrates and reinforces design concepts and ties them to real-world design choices through the use of case studies in UNIX and Windows.

Operating Systems: Internals and Design Principles, 6e received the 2009 Textbook Excellence Award from the Text and Academic Authors Association (TAA)!













Program Execution Attributes Type of job JOB1 JOB2 JOB3 Heavy compute Heavy I/O Heavy I/O Duration 5 min 15 min 10 min Memory required 50 M 100 M 75 M Need disk? No No Yes Need terminal? No Yes No Need printer? No No Yes as uniprogramming. The processor spends a certain amount of time executing, until it reaches an I/O instruction. It must then wait until that I/O instruction concludes before proceeding. This inefficiency is not necessary. We know that there must be

were recorded in its execution context. Later, the OS can perform a process switch and resume execution of process A. The process switch consists of storing the context of B and restoring the context of A. When the program counter is loaded with a value pointing into A’s program area, process A will automatically resume execution. Thus, the process is realized as a data structure. A process can either be executing or awaiting execution. The entire state of the process at any instant is contained

warning of, attempts to access system resources in an unauthorized manner. Intrusion detection systems (IDSs) can be classified as follows: • Host-based IDS: Monitors the characteristics of a single host and the events occurring within that host for suspicious activity • Network-based IDS: Monitors network traffic for particular network segments or devices and analyzes network, transport, and application protocols to identify suspicious activity An IDS comprises three logical components: •

and typing rhythm. All of these methods, properly implemented and used, can provide secure user authentication. However, each method has problems. An adversary may be able to guess or steal a password. Similarly, an adversary may be able to forge or steal a token. A user may forget a password or lose a token. Further, there is a significant administrative overhead for managing password and token information on systems and securing such information on systems. With respect to biometric

executed). 2. All other command line input is interpreted as program invocation, which should be done by the shell forking and execing the programs as its own child processes. The programs should be executed with an environment that contains the entry: parent=/myshell where /myshell is as described in 1.ix. above. 3. The shell must be able to take its command line input from a file. That is, if the shell is invoked with a command line argument: myshell batchfile then

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