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In a distributed system, load sharing is a type of reliability.
False
A network operating system supports remote execution across the network.
True
Client-server systems are always symmetric.
False
Parallel clustering is a type of asymmetric clustering.
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Distributed systems require a wide area network (WAN).
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Clustered systems provide high availability and scalability.
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In a batch system, the CPU is multiplexed among several jobs.
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A resident monitor is responsible for controlling the transfer of jobs between memory and disk.
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Memory management is not necessary for multiprogramming.
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A handheld system is a type of operating system.
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The CPU is allocated to a job only if the job is in memory in a time-sharing system.
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The primary goal of an operating system is to execute user programs.
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Job scheduling is not a necessary feature for multiprogramming.
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The hardware provides basic application programs.
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An operating system controls and coordinates the use of hardware among various users.
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A multiprogrammed batch system does not require CPU scheduling.
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In a batch system, the response time is not a concern.
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A program that acts as an intermediary between a user of a computer and the computer hardware is called a compiler.
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Portals to servers are a characteristic of traditional computing environments.
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The operating system makes the computer system inconvenient to use.
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I/O routines are supplied by the user in a multiprogrammed batch system.
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Load balancing among servers is a key feature of embedded computing.
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An operating system uses the computer hardware in an inefficient manner.
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Robots are an example of devices that do not use embedded computing systems.
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Users of a computer system include people and machines.
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PDAs are a type of traditional computing device.
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Coffee makers are an example of devices that use embedded computing systems.
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Web-based computing places less emphasis on networking compared to traditional computing environments.
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In a parallel system, each processor is assigned a specific task.
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Symmetric multiprocessing is more common in extremely large systems.
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Distributed systems are tightly coupled systems.
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Parallel systems can increase reliability through graceful degradation.
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In a distributed system, processors share a global memory.
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Parallel systems can increase throughput.
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Asymmetric multiprocessing is supported by most modern operating systems.
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Distributed systems are examples of parallel systems.
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Study Notes
Reside Monitor and Batch Systems
- In a resident monitor, initial control is in the monitor, then control is transferred to a job, and when the job completes, control transfers back to the monitor.
Memory Layout for a Simple Batch System
- A simple batch system has multiple jobs in main memory at the same time, and the CPU is multiplexed among them.
Multiprogrammed Batch Systems
- Multiprogrammed batch systems require job scheduling, memory management, CPU scheduling, allocation of devices, I/O routines, and prevention of job interference.
Time-Sharing Systems
- In time-sharing systems, the CPU is multiplexed among several jobs that are kept in memory and on disk, and response time should be short.
What is an Operating System?
- An operating system is a program that acts as an intermediary between a user of a computer and the computer hardware.
- Operating system goals include executing user programs, making solving user problems easier, and using the computer hardware efficiently.
Computer System Components
- A computer system consists of hardware, an operating system, application programs, and users.
Parallel Systems
- Advantages of parallel systems include increased throughput, economical use of peripherals and storage, increased reliability, and graceful degradation.
Symmetric Multiprocessing Architecture
- In symmetric multiprocessing, each processor runs an identical copy of the operating system, and many processes can run at once without performance deterioration.
Distributed Systems
- Distributed systems distribute computation among several physical processors, which communicate through high-speed buses, LAN, WAN, or telephone lines.
- Advantages of distributed systems include resource sharing, computation speedup, reliability, communications, cost, and scalability.
Client-Server Systems
- Client-server systems support file sharing and remote execution across the network, and may be either client-server or peer-to-peer systems.
Clustered Systems
- Clustering allows two or more systems to share storage, provides high availability, and can be asymmetric or symmetric.
Computing Environments
- Traditional computing is blurring boundaries, and web-based computing emphasizes networking and load balancing among servers.
- Embedded computing involves processors in consumer devices.
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Description
This quiz covers an introduction to operating systems, including types of systems such as mainframe, desktop, and real-time systems. It is based on Chapter 1 of the Silberschatz, Galvin and Gagne book.
