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Chapter 1 Answers - Tutorial Work - What Are The Four Components Of A Computer System?
Operating Systems (C191)
Western Governors University
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Section 1 1 What are the four components of a computer system? Hardware, Operating System, Application Programs, Users 1 Provide at least three resources the operating system allocates. CPU Time Memory Space File-Storage Space I/O Devices 1 What is the common name used to refer to the operating system program? Kernel 1 What do mobile operating systems often include in addition to the core kernel? Middleware – a set of frameworks that provide additional services to application developers Section 1 1 What is an interrupt? The occurrence of an event signaled from either software or hardware. 1 What special operation triggers a software interrupt? System call aka Monitor Call 1 What is one advantage of using a solid state disk over a magnetic disk? Generally faster than HDD and are nonvolatile 1 What is the difference between volatile and nonvolatile storage? Volatile – loses contents when power is removed. Nonvolatile – retains contents when power is lost Section 1 1 What is another term for multiprocessor system? Parallel or Multicore 1 Provide at least two advantages of multiprocessor systems. Increased Throughput Economy of Scale Increased Reliability 1 True or False? The most common multiple-processor system uses asymmetric multiprocessing. False 1 What is the name of a multiprocessor system that uses multiple computing cores? Multicore 1 How does a clustered system differ from a multicore system? Multicore – Multiple cores on a single chip Clustered – Gathers together multiple CPU (multiple chips) Section 1 1 How does multiprogramming increase CPU utilization? By organizing jobs (code and data) so that the CPU always has one to execute 1 What is the term for a program that has been loaded and is executing? Process 1 What part of the operating system makes the decision with regards to which job will run? CPU Scheduling Section 1 1 What are the two separate modes of operation? User Mode and Kernel 1 What is the mode of the system at boot time? Kernel 1 What is the mode of the system when the operating system gains control? User Mode 1 What is the mode of the system when a user program is running? User Mode Section 1 1 Name at least two activities the operating system is responsible for in connection with process management. Scheduling processes and threads on the CPU(s) Creating and deleting both user and system processes 1 True or False? A bitmap of length N can be used to represent the status of 2N items. False Only N items NOT 2N Section 1 1 List at least five different types of computing environments. 1. 2. 3. 4. Traditional Computing Mobile Computing Distributed Systems Client-Server Section 1 1 Provide an example of an open source operating system. Linux
Chapter 1 Answers - Tutorial Work - What Are The Four Components Of A Computer System?
Course: Operating Systems (C191)
University: Western Governors University
