ACS-1803 Introduction to Information Systems Quiz
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Questions and Answers

What was the main purpose of the Defense (DoD) in 1969?

  • To develop a common communication protocol for LAN servers.
  • To join computers of different types running different operating systems. (correct)
  • To provide internet access to end users.
  • To construct the internet backbone.

    • Which of the following is NOT part of the internet backbone?

  • Cables
  • Router
  • Satellites
  • End-user devices (correct)

    • What is the role of an Internet Service Provider (ISP)?

  • To connect LAN servers with the internet backbone.
  • To construct transmission lines for internet connections.
  • To develop network protocols for data transmission.
  • To provide Internet access to people. (correct)

    • What is the primary function of network protocols?

    <p>Defining the format for transmitting data between connected computers.</p> Signup and view all the answers

    What is NOT required to access the internet via an Internet Service Provider (ISP)?

    <p>LAN server connection method.</p> Signup and view all the answers

    Which hardware component is crucial for making worldwide communications possible?

    <p>Antenna towers</p> Signup and view all the answers

    What type of architecture involves clients requesting services from servers?

    <p>Client/Server</p> Signup and view all the answers

    Which transmission medium introduces the concept of bandwidth and broadband communications?

    <p>Fiber optic</p> Signup and view all the answers

    What network type is associated with a centralized connection point for all devices?

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

    Which protocol plays a pivotal role in data packet transmission over the Internet?

    <p>TCP/IP</p> Signup and view all the answers

    What concept refers to an emerging network of devices that enhance operational efficiency across various sectors?

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

    Which type of network covers a broad geographical area?

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

    What is the role of TCP in data transmission?

    <p>Breaking information into small data packets</p> Signup and view all the answers

    Which protocol manages the transfer of data packets from computer to computer?

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

    What is an IP datagram?

    <p>A data packet conforming to the IP spec</p> Signup and view all the answers

    What is the function of routers in a network?

    <p>Identifying each device on a network as unique using IP protocol</p> Signup and view all the answers

    What does an IP address represent?

    <p>A unique identifier for each computer on the internet</p> Signup and view all the answers

    How is an IP address structure similar to a street address?

    <p>It consists of four numbers separated by dots</p> Signup and view all the answers

    What is the main purpose of packet switching in the Internet?

    <p>Dividing data into packets to transmit concurrently</p> Signup and view all the answers

    What information is included in the header of each packet in packet switching?

    <p>Both source and destination addresses</p> Signup and view all the answers

    What is the Internet of Things (IoT) primarily characterized by?

    <p>Physical objects with sensors and network connectivity</p> Signup and view all the answers

    Which sector does NOT typically utilize sensors and the IoT for operational activities?

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

    What is a common function of sensors in the Internet of Things?

    <p>Measuring temperature or humidity</p> Signup and view all the answers

    How are computing devices defined in a computer network?

    <p>As a group of interconnected devices</p> Signup and view all the answers

    What is a computer network?

    <p>A group of two or more linked computing devices</p> Signup and view all the answers

    In telecommunications, what does the term 'medium' refer to?

    <p>The material substance that carries electronic signals for communication</p> Signup and view all the answers

    What is the primary function of a database server in a client/server architecture?

    <p>Sending only the data that meets a specific query</p> Signup and view all the answers

    What is the main purpose of personal area networks?

    <p>Support interconnection within a range of about 33 feet</p> Signup and view all the answers

    What do Wide Area Networks (WANs) connect?

    <p>Geographically distant regions</p> Signup and view all the answers

    What is channel bandwidth?

    <p>The rate at which data is exchanged between computers</p> Signup and view all the answers

    What is one characteristic of fiber optic cables compared to coaxial cables?

    <p>Coaxial cables suffer less signal distortion</p> Signup and view all the answers

    Which wireless technology involves using light beams to transmit signals?

    <p>Infrared line of sight</p> Signup and view all the answers

    In what frequency range do Near Field Communication (NFC) devices operate?

    <p>Short-range frequencies</p> Signup and view all the answers

    What is the primary function of Wireless Access Points (WAPs) in Wi-Fi communication?

    <p>Translate data into radio signals for transmission</p> Signup and view all the answers

    Study Notes

    Computer Networking

    • A computer network is a group of two or more computing devices connected by a medium, allowing the exchange of electronic information.
    • Networks have existed from the early stages of human civilization, e.g., Ancient Rome's water supply system.

    Telecommunications

    • Telecommunications refers to the electronic transmission of signals for communications.
    • Telecommunications medium: any material substance that carries an electronic signal to support communications between a sending and receiving device.

    Network Topology and Types

    • Network Topology refers to how the communication links and hardware devices are arranged on a network.
    • Types of network topologies: Star, Bus, Mesh.
    • Network types: Personal Area Network (PAN), Local Area Network (LAN), Wide Area Network (WAN).

    Client/Server Systems

    • Client/Server architecture features multiple computer platforms dedicated to special functions, e.g., database management, printing, or communications.
    • A client is any computer that sends messages requesting services from the servers on the network.
    • A database server sends only the data that meets a specific query—not the entire file.

    Speed of Transmission

    • Channel bandwidth: the rate at which data is exchanged, measured in bits/sec.
    • Broadband communications: a telecommunications system that can transmit data very quickly (> 25 Mbps).
    • Measured in bits per second (bps): Kbps (thousands), Mbps (millions), Gbps (billions).

    Transmission Media

    • Wired (guided) transmission media: signals are guided along a solid medium.
    • Wireless transmission media: the signal is broadcast over airwaves as a form of electromagnetic radiation.
    • Types of transmission media:
      • Twisted-pair wire
      • Coaxial Cable
      • Fiber Optic
      • Wireless: Wi-Fi, Radio, Microwave, Infrared

    Wireless Technologies

    • Wireless transmission involves the broadcast of communications in one of three frequency ranges: Radio, Microwave, or Infrared frequencies.
    • Near Field Communication (NFC): Short-range wireless connectivity used on cellphones and credit cards.
    • Bluetooth: Wireless technology for distances of 10-30 feet, with a speed of 2Mbps.

    The Internet

    • The Internet is a large, worldwide collection of networks that use a common protocol to communicate with each other.
    • The largest, "network of networks".
    • ARPANET: The ancestor of the Internet, started by the U.S. Department of Defense in 1969.

    How the Internet Works

    • TCP/IP (Transmission Control Protocol/Internet Protocol) approach:
      • Breaks information into small chucks called data packets.
      • Manages the transfer of the packets from computer to computer.
      • Reassembles data packets into a message at the destination.
    • IP Address: A coding system used to identify computers on the internet, consisting of four numbers between 1 and 254, separated by dots.

    Packet Switching

    • Internet uses packet switching to enable users to transmit across it concurrently.
    • What is to be sent down the network is 'sliced up' into packets.
    • Each packet has a header with source and destination address.

    Uses of the Internet

    • Email
    • FTP (File Transfer)
    • Search Engines
    • eCommerce
    • Banking
    • Education
    • Collaboration
    • Social Networking
    • Internet of Things (IoT)

    Internet of Things (IoT)

    • A network of physical objects embedded with sensors, processors, software, and network connectivity capability.
    • Enables devices to exchange data with the manufacturer, device operators, and other connected devices.
    • Examples of using sensors and IoT to monitor and control key operational activities:
      • Asset monitoring
      • Construction
      • Agriculture
      • Manufacturing
      • Monitoring parking spaces
      • Predictive Maintenance
      • Retailing
      • Traffic monitoring

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    Description

    Test your knowledge on networks, telecommunications, and the Internet in the context of information systems. This quiz covers topics such as computer networking, ancient networks like the water supply system in Ancient Rome, and the definition of a computer network.

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