Computer Systems and the Cloud
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Questions and Answers

What percentage of the total assessment does the final exam contribute?

  • 5%
  • 20%
  • 75%
  • 50% (correct)

    • How many hours are allocated for private study in the course?

  • 20 hours
  • 78 hours
  • 22 hours
  • 128 hours (correct)

    • Which component of the course has the lowest weight in the overall assessment?

  • Quiz 1 (correct)
  • Final Exam
  • Assignment 1
  • Assignment 2

    • What is the deadline for submissions in this course?

    <p>Each Wednesday at 23:55</p> Signup and view all the answers

    What is the definition of a system according to the provided content?

    <p>A set of things working together as parts of a mechanism</p> Signup and view all the answers

    What is one of the learning outcomes for COMP3370/COMP5810?

    <p>Assess economic, security, and ethical tradeoffs</p> Signup and view all the answers

    Which of the following topics is included in the module map?

    <p>Distributed Data Structures</p> Signup and view all the answers

    Which practical aspect is associated with cloud computing in the course?

    <p>Implementing Distributed File Systems</p> Signup and view all the answers

    When are lectures for the course scheduled?

    <p>Thursdays at 15:00 and Fridays at 10:00</p> Signup and view all the answers

    Which key challenge is addressed in this course related to distributed systems?

    <p>Challenges of Distribution</p> Signup and view all the answers

    What percentage of the total mark do the weekly Moodle quizzes contribute?

    <p>10%</p> Signup and view all the answers

    What type of infrastructure will students learn to explain in this module?

    <p>Cloud Computing infrastructure</p> Signup and view all the answers

    Which technology is associated with building on network technology in the course?

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

    What information does the traceroute command provide?

    <p>The path of network packets to a destination</p> Signup and view all the answers

    What role do containers play in the Cloud Software Stack?

    <p>They isolate applications and manage system resources</p> Signup and view all the answers

    Which component of the Cloud Software Stack manages hardware and provides common services?

    <p>Operating System</p> Signup and view all the answers

    In the context of the Cloud Software Stack, what do virtual machines accomplish?

    <p>Share computing and storage resources among multiple users</p> Signup and view all the answers

    Why might there be multiple routes observed in a traceroute output?

    <p>Load balancing across multiple servers</p> Signup and view all the answers

    What underlies the Cloud Software Stack's capacity to offer services?

    <p>Virtualization layers</p> Signup and view all the answers

    What does the hardware system in the Cloud Software Stack provide?

    <p>Computing and storage capacities</p> Signup and view all the answers

    What are common services provided by an operating system in the Cloud Software Stack?

    <p>File systems and scheduling</p> Signup and view all the answers

    What does the command 'lsof -i' accomplish?

    <p>Displays a list of internet connections</p> Signup and view all the answers

    Which of the following statements about Command Line Interfaces (CLI) is true?

    <p>CLIs are complicated but allow for adaptation and combination of tools.</p> Signup and view all the answers

    What is one disadvantage of Graphical User Interfaces (GUIs) compared to Command Lines?

    <p>GUIs are often fixed with limited adaptability.</p> Signup and view all the answers

    In the context of the network connection for WhatsApp, what does the TCP in '192.168.1.65:59351->whatsapp-cdn-shv-01-lhr8.fbcdn.net:https' refer to?

    <p>Transmission Control Protocol</p> Signup and view all the answers

    What does the command 'lsof -h' do?

    <p>Provides help information about lsof</p> Signup and view all the answers

    What is considered a characteristic of complex systems?

    <p>They contain a large number of parts.</p> Signup and view all the answers

    What is the purpose of abstraction in systems thinking?

    <p>To simplify complex details for better understanding.</p> Signup and view all the answers

    In a layered system, what is the benefit of hiding details of lower layers?

    <p>To make it easier for users to focus on the task at hand.</p> Signup and view all the answers

    Which of the following best describes the role of protocols in computer communication?

    <p>Protocols establish rules for transmitting data between computers.</p> Signup and view all the answers

    How many computers are typically involved in systems like WhatsApp?

    <p>At least 3.</p> Signup and view all the answers

    What aspect of systems does the term 'economical with truth' refer to?

    <p>Systems that often minimize complexity or exaggerate simplicity.</p> Signup and view all the answers

    What type of system is WhatsApp categorized as?

    <p>A network of computer systems.</p> Signup and view all the answers

    What is the role of a WhatsApp server in message transmission?

    <p>It connects different users' devices through the cloud.</p> Signup and view all the answers

    Study Notes

    Computer Systems and the Cloud

    • A system is a set of things working together as parts of a mechanism.
    • Systems can be very complex and require abstraction to understand, which involves focusing on the essence of the system and its relevant bits.
    • Abstraction in computing can be thought of as thinking in layers:
      • Application: Focus on the task at hand.
      • Operating System: Rely on the layer directly below, hiding details of lower systems.
      • Hardware: Largely built to solve one problem at a time.
    • WhatsApp is a practical example of a Cloud system.
    • Messages are sent through a WhatsApp server in the Cloud or internet.
    • There are at least 20 computers involved in sending a message from one user to another.
    • These computers communicate via protocols.
    • A protocol is a set of rules that govern how things communicate.
    • We can use commands to interact with computer systems, and a command line is a way of interacting with the operating system of a computer.
    • There are two types of user interfaces:
      • Graphical User Interface: Made for a specific purpose, often fixed, and has limited adaptability/combinability.
      • Command Line: Offers tools for many specific purposes, is more complicated, but is easier to adapt and combine.
    • We can use the lsof -i command in the terminal to get a list of internet connections on a computer.
    • The lsof command is used to list open files, and the -i parameter is used to show internet connections.

    Networks

    • lsof -h can be used to show the help for the lsof command.
    • A message from WhatsApp can be tracked using lsof -i and by viewing the Sender and Receiver addresses, and the application involved (WhatsApp, in this case).
    • The lsof -i command will list internet connections for the computer being used.
    • WhatsApp is using a specific server to send its messages.
    • The server is whatsapp-cdn-shv-01-lhr8.fbcdn.net and is accessed using the HTTPS protocol.

    Distributed Systems

    • A distributed system is a system that uses multiple computers to achieve a common goal.
    • They involve multiple computers that are geographically dispersed and operate independently.
    • They have distributed resources (data, computation, communication) that work together to achieve a shared goal.
    • Common examples of distributed systems include online shopping, banking, and social media.

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    Related Documents

    COMP3370-01-introduction-systems-and-abstractions.pptx

    Description

    Explore the fundamentals of computer systems and cloud computing in this quiz. Understand how abstraction works in various layers of a system, from applications to hardware. Learn about protocols and practical applications like WhatsApp in the context of cloud communication.

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