RCS 303 Exam Preparation Quiz
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Questions and Answers

What is the main focus of the RCS 303 examination?

  • Database Management
  • Wireless Networks (correct)
  • Software Engineering
  • Web Development

    • Students are permitted to refer to their notes during the examination.

    False

    What time does the examination begin?

    2 hours

    Students are only allowed to leave the exam room ____ minutes before the end of the exam.

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

    Match the following instructions with the correct actions:

    <p>Do not write on the examination paper = Maintaining the integrity of the exam Show your working = Demonstrating calculations Keep phones switched off = Avoiding distractions Start each question on a new page = Organizing answers clearly</p> Signup and view all the answers

    Which technique divides the channel by frequency?

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

    TDMA allocates a unique frequency band to each user.

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

    What does CDMA stand for?

    <p>Code Division Multiple Access</p> Signup and view all the answers

    In IoT, data collected by sensors is sent to a central system or _____ for processing.

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

    Match the following IoT components with their descriptions:

    <p>Devices/Sensors = Collect data from the environment Data Transmission = Sends data using protocols Data Processing/Analysis = Interprets and derives insights Action = Makes automated decisions based on data</p> Signup and view all the answers

    Which of the following is a characteristic of FDMA?

    <p>Each user gets a unique frequency</p> Signup and view all the answers

    CDMA is resistant to interference because users have unique codes.

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

    What are some common communication protocols used in IoT?

    <p>Wi-Fi, Bluetooth, Zigbee, Cellular networks</p> Signup and view all the answers

    What is a primary issue confronting wildlife conservation in Kenya?

    <p>Endangered species poaching</p> Signup and view all the answers

    Water distribution management does not benefit from the use of Wireless Sensor Networks (WSNs).

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

    What technology can be used to monitor wildlife movements and detect poaching activities?

    <p>WSNs (Wireless Sensor Networks)</p> Signup and view all the answers

    Kenya is prone to natural disasters such as floods, droughts, and __________.

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

    Match the following problems with their corresponding solutions:

    <p>Wildlife Conservation = Using WSNs to monitor poaching activities Disaster Management = Monitoring environmental factors for early warnings Healthcare Monitoring = Remote patient monitoring through sensors Water Distribution = Effective management through WSNs</p> Signup and view all the answers

    What kind of environmental factors can WSNs monitor for disaster management?

    <p>Rainfall, ground movement, and soil moisture</p> Signup and view all the answers

    WSNs can enhance healthcare delivery in urban centers only.

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

    What type of sensors can be used to track animal activity in wildlife conservation?

    <p>Motion detectors, cameras, and temperature sensors</p> Signup and view all the answers

    What is the primary purpose of frequency allocation by regulatory bodies like ITU?

    <p>To assign different frequency bands for specific applications</p> Signup and view all the answers

    Higher frequencies are better for wider coverage in access technologies.

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

    What are two advanced techniques used by 5G to improve spectrum efficiency?

    <p>MIMO and beamforming</p> Signup and view all the answers

    Access technologies, like Wi-Fi, often use __________ spectrum to avoid congestion in crowded areas.

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

    Match the following spectrum considerations with their implications:

    <p>Frequency Allocation = Choosing appropriate frequencies for coverage and speed Spectrum Efficiency = Maximizing capacity for wireless services Regulatory Considerations = Ensuring fair access and preventing interference Global Harmonization = Ensuring global device compatibility</p> Signup and view all the answers

    What is one of the main impacts of competition for spectrum?

    <p>Use of unlicensed spectrum in crowded areas</p> Signup and view all the answers

    Global spectrum harmonization prevents interference and is critical for technologies like LTE and 5G.

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

    Name one type of satellite that is improving bandwidth and reducing latency in satellite communications.

    <p>high-throughput satellites (HTS) or low Earth orbit (LEO) satellites</p> Signup and view all the answers

    What is the primary functionality of a Personal Digital Assistant (PDA)?

    <p>Personal organization and communication</p> Signup and view all the answers

    A laptop connected to a hotel’s Wi-Fi provides less flexibility compared to traditional desktop computing.

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

    How can RFID technology be used in student attendance tracking?

    <p>By implementing RFID tags in student ID cards to automatically record attendance.</p> Signup and view all the answers

    The function of an Access Point in a WLAN is to provide __________ to various devices.

    <p>internet access</p> Signup and view all the answers

    Match the following functionalities with their respective RFID applications:

    <p>Student Attendance Tracking = Automatic record keeping in lectures Library Management = Easy check-in and check-out of books Asset Management = Tracking location and usage of equipment Campus Access Control = Monitoring entry and exit of individuals</p> Signup and view all the answers

    Which of the following describes an advantage of using RFID tags on library materials?

    <p>Enhanced inventory management</p> Signup and view all the answers

    The main purpose of a laptop in a hotel room is to restrict access to online services.

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

    What is one major challenge when implementing the wireless network project?

    <p>Signal interference</p> Signup and view all the answers

    What does equipping university equipment with RFID tags help maintain?

    <p>An accurate inventory</p> Signup and view all the answers

    Implementing repeaters or a mesh network can help address coverage gaps in a wireless network.

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

    What encryption protocol is recommended for securing wireless communications?

    <p>WPA3</p> Signup and view all the answers

    Conducting a thorough site survey can help identify potential sources of __________ in a wireless network.

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

    Which of the following is NOT a mitigation procedure for signal interference?

    <p>Place APs randomly</p> Signup and view all the answers

    Regular security audits are unnecessary for maintaining wireless network security.

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

    Name one disadvantage of using IP broadcast subnetting in a wireless network.

    <p>Capacity wastage</p> Signup and view all the answers

    Match the challenge of implementing a wireless network with its mitigation procedure:

    <p>Signal Interference = Conduct a thorough site survey Coverage Gaps = Implement a mesh network Security Risks = Use strong encryption protocols</p> Signup and view all the answers

    Study Notes

    General Instructions

    • Students are not permitted to write on the examination paper.
    • Textbooks, reference books, and notes are not allowed.
    • Answer question 1 and at least two other questions.
    • Questions in all sections should be answered in the answer booklet(s).
    • Start each answer on a new page.
    • Turn off phones and keep bags and other items at the front of the room.
    • Do not refer to unauthorized materials.
    • Always show your working.
    • Write your registration number on the answer booklet.
    • Write the question number in the order you answer them on the answer booklet.
    • Do not use your phone as a calculator.
    • Leave the exam room 30 minutes before the end of the exam.
    • Do not write on the question paper.
    • Use the back of the booklet for calculations and rough work.

    Special Instructions (RCS 303: Wireless Networks)

    • The exam is 2 hours long.
    • Answer questions in the provided answer booklet(s).
    • Start each question on a new page

    Question One (30 Marks): Section A - Compulsory

    • Define the following terms related to satellite communication:
      • Earth station (a ground-based facility communicating with satellites)
      • Uplink (signal sent from Earth station to satellite)
      • Downlink (signal sent from satellite to Earth station)
      • Transponder (satellite device receiving, amplifying, and retransmitting signals)
      • Elevation angle (angle between horizontal plane and line of sight to satellite)
    • Enumerate three benefits of spread spectrum:
      • Enhanced security: Makes signals harder to intercept and decode.
      • Resistance to interference: Minimizes the impact of noise and jamming.
      • Efficient bandwidth utilization: Allows multiple users to share the same frequency without interference.
    • Identify three significant strengths of wireless communication systems over wired systems:
      • Mobility: Users can access the network without being tied to a physical location.
      • Ease of installation: No need for physical cables.
      • Scalability: Easily accommodates more users and devices without major infrastructure changes.
    • Describe IEEE 802.11d, 802.11e, and 802.11h standards.
      • 802.11d: Enables Wi-Fi devices to work across different countries by adapting to local regulations for frequency and power limits.
      • 802.11e: Improves quality of service by prioritizing different types of traffic (e.g., voice, video) in multimedia applications.
      • 802.11h: Includes dynamic frequency selection and transmit power control to minimize interference while complying with European regulations for 5 GHz operation.
    • Describe half-wave dipole, quarter-wave dipole, and parabolic antennas. Include their radiation patterns and application examples.

    Question Two (20 Marks): Section B - Answer any two

    • Internet of Things (IoT): Explain how IoT works with relevant diagrams. Detail applications in smart homes, healthcare, industrial IoT, and smart cities.

    Question Three (20 Marks): Section B - Answer any two

    • Wireless Communication Spectrum Considerations: Discuss spectrum allocation, efficiency, regulatory considerations, and competition. Describe the significance in relation to access technologies.

    Question Four (20 Marks): Section B - Answer any two

    • Bluetooth Technology: Explain Bluetooth technology, its security threats, mitigation strategies, and applications in various contexts, including audio, peripherals, healthcare, home automation, and automotive.
    • Long Range Communication Transmission Functions: Briefly describe six major transmission functions required in long-range communication: Modulation, Amplification, Frequency Conversion, Multiplexing, Error Detection and Correction, and Demodulation.

    Question Five (20 Marks): Section B - Answer any two

    • OSI Layers in Wireless Networks: Detail each of the five layers (Application, Presentation, Session, Transport, and Network) in an OSI protocol suite for wireless networks, including the role and importance of each. Give examples of applications at each layer.
    • Wireless Network in Riara University: Explain the usage and impact of RFID technology in a Riara University campus context for applications like asset management, campus access control, and more relevant contexts. Describe network security considerations. Outline any five critical issues relevant to developing a wireless networking policy. Explain and/or describe Bandwidth Management policies and Acceptable Use policies relevant to the context.

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    Riara University Wireless Networks Past Paper 2024 PDF

    Description

    Test your knowledge on the key concepts and techniques related to the RCS 303 examination. This quiz includes questions on IoT components, communication protocols, and unique coding methods such as CDMA and FDMA. Prepare effectively by matching descriptions and understanding exam protocols.

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