CSS331 Fundamentals of Data Communications
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Questions and Answers

What percentage of the total course evaluation is attributed to attendance and review exercises?

  • 5%
  • 15%
  • 10% (correct)
  • 20%

    • Which of the following is a primary textbook for the course?

  • Computer Networking Essentials
  • Data Communications and Networking
  • Fundamentals of Computer Networking
  • Data and Computer Communications (correct)

    • When is the Midterm Exam scheduled?

  • October 15, 2024
  • September 30, 2024 (correct)
  • November 2, 2024
  • October 8, 2024

    • What is the overall percentage weight of the final exam in the course evaluation?

    <p>30%</p> Signup and view all the answers

    What topics will be covered in Week 3 of the class schedule?

    <p>Signal Encoding Technique</p> Signup and view all the answers

    What will occur in Week 6 of the class schedule?

    <p>Group Presentation #1</p> Signup and view all the answers

    What is one of the key topics covered during the class relating to WAN technologies?

    <p>Multiplexing Techniques</p> Signup and view all the answers

    Which week is dedicated for a reading break prior to the Midterm Exam?

    <p>Week 7</p> Signup and view all the answers

    What is the consequence of cheating in this course?

    <p>Failing grade</p> Signup and view all the answers

    What is the focus of Chapter 1 according to the course outline?

    <p>Data Communications, Data Networks, and the Internet</p> Signup and view all the answers

    What is the main purpose of packet switching in communication networks?

    <p>To transmit data in small chunks called packets</p> Signup and view all the answers

    Which of the following is a characteristic of Frame Relay technology?

    <p>It operates on virtual circuits with reduced error control overhead.</p> Signup and view all the answers

    How does Asynchronous Transfer Mode (ATM) differ from Frame Relay?

    <p>ATM uses fixed-length packets called cells.</p> Signup and view all the answers

    What is the main characteristic of Local Area Networks (LAN)?

    <p>They are usually privately owned by the same organization.</p> Signup and view all the answers

    Which type of network serves as a middle ground between LAN and WAN?

    <p>Metropolitan Area Network (MAN)</p> Signup and view all the answers

    What was the origin of the Internet?

    <p>Evolved from ARPANET established by the U.S. government.</p> Signup and view all the answers

    What is a key feature of packet switching as used in modern communication networks?

    <p>Constant data rate with multiple virtual circuits.</p> Signup and view all the answers

    Which of these statements is true about the data rates of Local Area Networks compared to other network types?

    <p>LANs provide the highest data rates among all network types.</p> Signup and view all the answers

    What is the primary function of a network in data communications?

    <p>To connect devices for data transmission</p> Signup and view all the answers

    Which of the following are considered key performance criteria for networks?

    <p>Throughput and response time</p> Signup and view all the answers

    What type of network primarily spans large geographical areas?

    <p>Wide Area Network (WAN)</p> Signup and view all the answers

    What technology utilizes a dedicated path for the duration of a conversation?

    <p>Circuit switching</p> Signup and view all the answers

    Which factor is NOT considered when evaluating network reliability?

    <p>Data transmission speed</p> Signup and view all the answers

    What term refers to the combination of voice, data, image, and video technologies in networking?

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

    Which of the following is not a technology used in WAN?

    <p>Wi-Fi Direct</p> Signup and view all the answers

    What is an essential aspect of network selection for businesses?

    <p>Transmission media depend on usage type</p> Signup and view all the answers

    What is the primary purpose of data communications?

    <p>To exchange data between devices</p> Signup and view all the answers

    Which option is NOT one of the effective characteristics of data communication?

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

    What does jitter refer to in the context of data communication?

    <p>Uneven delays in audio/video streaming</p> Signup and view all the answers

    Which data flow method allows for two-way communication but not simultaneously?

    <p>Half-duplex</p> Signup and view all the answers

    What trend is influencing the growth of data communications?

    <p>High-speed LAN developments</p> Signup and view all the answers

    Which of the following describes a significant change in networking technology?

    <p>Emergence of high-speed networks</p> Signup and view all the answers

    What is causing the unpredictable nature of corporate data traffic patterns?

    <p>Growing use of telecommuting</p> Signup and view all the answers

    Which device has significantly impacted the rapid conversion of consumer electronics to digital technology?

    <p>Digital versatile disks (DVDs)</p> Signup and view all the answers

    Which task is NOT typically considered a key communications task?

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

    Which statement best describes 'everything over IP' as a trend?

    <p>All types of data transmissions occur over Internet Protocol.</p> Signup and view all the answers

    Which communication model component is involved in transforming data?

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

    In which area have customized services become more prevalent in recent trends?

    <p>Network management and security</p> Signup and view all the answers

    What is a significant factor behind the increased capacity of transmission in modern networks?

    <p>The use of optical fiber and high-speed wireless</p> Signup and view all the answers

    Which component is responsible for routing data in communications?

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

    Study Notes

    Course Information

    • Instructor: Asst. Prof. Dr. Sasiporn Usanavasin
    • Course Code: CSS331 - Fundamentals of Data Communications
    • Sections meet on Tuesdays and Wednesdays in Room 3509, 9:00 AM to 12:00 PM.

    Course Structure

    • Attendance and Review Exercises: 10% (random checks)
    • Assignments (individual & group): 30% (includes 2 presentations)
    • Midterm Exam: 30%
    • Final Exam: 30%
    • Cheating results in an automatic failure (F).

    Required Textbooks

    • Main Textbook: "Data and Computer Communications" by William Stallings
    • Additional Reading: "Data Communications and Networking" by Behrouz A. Forouzan

    Class Schedule Highlights

    • Week 1: Introduction to Data Communications and Protocol Architectures
    • Week 2: Data Transmission and Transmission Media
    • Weeks 3-4: Signal Encoding Techniques; Error Detection and Correction Techniques
    • Week 6: First Group Presentation
    • Midterm Exam on September 30, 2024
    • Fourth Group Presentation in Week 14
    • Final Exam on December 2, 2024

    Data Communications Overview

    • Data communications involve the exchange of information between devices using transmission mediums like wire cables.
    • Key attributes of effective data communication include:
      • Delivery to intended recipients.
      • Accuracy of transmitted data.
      • Timeliness of communication.
      • Jitter, or uneven delays in streaming data.

    Components & Trends in Data Communications

    • Main components include:
      • Data flow (simplex, half-duplex, full-duplex)
      • Addressing, routing, and signal generation
    • Trends driving changes:
      • Rapid traffic growth and technological advancements.
      • Internet of Things (IoT) expanding service requirements.
      • Growth of high-speed LANs and corporate WAN needs.

    Networking Technologies

    • Increased reliance on:
      • High-speed LANs for centralized computing and server farms.
      • WANs to accommodate growing telecommuting and data-intensive applications.
      • Digital electronics and improvements in bandwidth efficiency.

    Networking Models and Communication Tasks

    • The communications model consists of processes for data generation, encoding, transmission, and decoding.
    • Key tasks in communication include signal generation, message formatting, error detection/correction, and network management.

    Transmission Media

    • Selection criteria depend on business needs and link distances.
    • Advances in technology favor fiber optic and wireless options.
    • Cost efficiency remains a priority despite high transmission costs.

    Networking Basics

    • A network comprises interconnected devices (nodes) capable of data generation, sending, and receiving.
    • Network evaluation criteria include performance (transit time, response time), reliability, and security.

    Types of Networks

    • Local Area Networks (LAN): smaller scope, owned by users, high data rates (e.g., Ethernet).
    • Wide Area Networks (WAN): larger geographical spans relying on public circuits, employing technologies like circuit switching, packet switching, and asynchronous transfer mode (ATM).
    • Metropolitan Area Networks (MAN): bridges the gap between LAN and WAN, offering high speeds across larger areas.

    Switching Techniques

    • Circuit switching: Establishes a dedicated communication path, e.g., traditional phone networks.
    • Packet switching: Sends data in packets to be routed independently; efficient for computer-to-computer communication.
    • Frame Relay: Enhances packet switching, reduces overhead errors, and increases speed.
    • ATM: Evolves from Frame Relay, uses fixed-length packets (cells), supports higher speed data transfer with minimal error control overhead.

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    Related Documents

    CSS331 Fundamentals of Data Communications Lecture 1 PDF

    Description

    This quiz focuses on the fundamentals of data communications as taught in CSS331. It covers key concepts necessary for understanding communication systems and evaluation methods. Ideal for students looking to assess their knowledge and understanding in this course.

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