Computer Architecture and Operating Systems Quiz
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Questions and Answers

Which of the following are characteristics of JAVA ports? (Select all that apply)

  • Multicast Socket (correct)
  • Connectionless (correct)
  • Connection-Oriented (correct)
  • Connection-Free

    • The Northbridge chip is responsible for connecting high-speed devices.

    True

    What is the term for a request for operating system service?

    System Call

    When an application icon is clicked, a new process is created and enters the ______ waiting for CPU execution.

    <p>Ready Queue</p> Signup and view all the answers

    Match the following types of schedulers with their functions:

    <p>Long-term scheduler = Determines which jobs are admitted to the system Short-term scheduler = Decides which of the ready processes will be executed next Medium-term scheduler = Manages swapping processes in and out of memory Dispatch scheduler = Handles the control of the CPU assignments</p> Signup and view all the answers

    Which of the following are areas where multiple core SPUs present challenges to programmers? (Select all that apply)

    <p>Data dependency</p> Signup and view all the answers

    Emulation allows an operating system to run on non-native hardware.

    <p>True</p> Signup and view all the answers

    What is the average turnaround time for Non-preemptive Shortest Job First algorithm if given jobs arrive at different times?

    <p>Specify the turnaround time based on the provided job details.</p> Signup and view all the answers

    What is the completion time of process A in a priority scheduling algorithm?

    <p>9</p> Signup and view all the answers

    In a client-server architecture, a file server provides an interface for clients to store and retrieve files.

    <p>True</p> Signup and view all the answers

    Which of the following terms describes the operation to temporarily halt CPU execution due to a signal from an I/O device?

    <p>Interrupt</p> Signup and view all the answers

    The system status must be saved during a ______ to switch to a new process.

    <p>context switch</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Accumulator = Stores the results of operations Main Memory = The storage that CPU can access directly Operating System = Intermediates between computer components Mounting = Makes files available to processes in a system</p> Signup and view all the answers

    What is the average waiting time using the FCFS scheduling algorithm for the provided jobs?

    <p>5.5</p> Signup and view all the answers

    In a non-preemptive scheduling algorithm, the CPU can be taken away from a running process at any time.

    <p>False</p> Signup and view all the answers

    Which of the following terms is NOT considered primary storage?

    <p>Hard disk drives</p> Signup and view all the answers

    Study Notes

    Java Ports

    • Java ports can be connection-oriented, connectionless, and multicast sockets.
    • Physical implementation of communication links include:
      • Direct
      • Synchronous explicit buffering
      • Network
      • Shared memory
      • Hardware bus

    Computer Organization

    • High-speed devices are placed in a single chip called Northbridge.
    • Preemptive Shortest Job First is also known as Shortest Remaining Time First.

    Round-Robin Scheduling

    • If a Round-Robin algorithm with a time quantum of 2 milliseconds is used, the second process to complete is 2.

    Process Synchronization

    • Blocking both transmit and receive in process synchronization is called Rendezvous.

    Caching

    • Copying information into faster storage (main memory) can be seen as a last cache for secondary storage.

    Scheduling

    • Long-term, Short-term, Medium-term, and Dispatch schedulers are all involved in process scheduling.

    System Calls

    • System calls are requests for operating system services.

    Multi-Core SPU Challenges

    • Multi-core SPUs present challenges to programmers in the following areas:
      • Identifying tasks
      • Balancing tasks
      • Data splitting
      • Data dependency
      • Testing and debugging
      • Data redundancy

    Operating System Services

    • Programming language support in operating systems includes:
      • Compilers
      • Linkers
      • Debuggers
      • Assemblers

    User Interface

    • GUIs (Graphical User Interfaces) and CLIs (Command Line Interfaces) are part of the operating system's user interface.

    Process States

    • When a user clicks an application icon, a new process is created. This process enters the Ready queue awaiting CPU execution.

    Cooperating Processes

    • Pipelining is an example of the computation speedup component in cooperating processes.

    Microkernels

    • Microkernel operating systems remove non-essential services from the kernel and implement them as system applications.

    Emulation

    • OS emulation allows an operating system to run on non-native hardware.

    Scheduling Algorithms

    • The average turnaround time for Non-pre-emptive Shortest Job First is 8.25.
    • Process A completes at time 9 using priority scheduling where each process has a higher priority than the previous one.

    Unix Signals

    • In Unix, signals are equivalent to interrupts in Windows.

    Burst Time

    • Burst time is the amount of time a process needs to complete its execution. It is also called response time.

    Interrupts

    • Interrupts are signals from I/O devices that temporarily halt CPU execution.

    Main Memory

    • Main memory is the only large storage media that the CPU can access directly.

    Client-Server Communications

    • Client-server network system communications involve:
      • Ports
      • RPCs (Remote Procedure Calls)
      • Protocols

    Computer Architecture

    • The accumulator stores the results of operations in computer architecture.
    • When code is executed, it is fetched from memory and loaded into the instruction register.

    Context Switching

    • Context switching occurs when the CPU switches to another process, requiring the system to save the old process's state and load the saved state of the new process.

    Primary Storage

    • Primary storage includes:
      • Registers
      • Cache
      • Main memory

    Secondary Storage

    • Secondary storage includes:
      • Non-volatile memory
      • Hard disk drives
      • Optical disks
      • Magnetic tape

    Operating System

    • The Operating System acts as an intermediary for all computer system components.

    Compile Time

    • Compile time is when an absolute code is generated, knowing where a process will reside in memory.

    Average Waiting Time

    • Using the FCFS scheduling algorithm, the average waiting time is 5.5.

    File Server

    • In a client-server architecture, a file server system offers an interface for clients to store and retrieve files.

    Non-pre-emptive

    • Non-pre-emptive scheduling means a process retains control of the CPU until it is blocked or terminated.

    Mounting

    • Mounting is an operation required before a file can be accessed by processes in a system.

    Process Scheduling

    • Process scheduling is a complex area with various algorithms and techniques, affecting system performance and user experience.

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    Description

    Test your understanding of key concepts in computer architecture and operating systems. This quiz covers topics such as Java ports, communication links, scheduling algorithms, and process synchronization. Challenge yourself to answer questions related to high-speed devices, caching, and different types of schedulers.

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