Mod. 1 - Intro To Wlans

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  • 1/10 Questions

    What IEEE committee and its working groups authors the wireless networking standards?

    • 802.3
    • 802.4
    • 802.14
    • 802.11
    • 802.16
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About This Quiz

This quiz covers the basics of Wireless Local Area Networks (WLANs), focusing on RF frequencies, security features, networking mediums, and IEEE standards.

Wireless Quizzes & Trivia

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  • 2. 

    Wireless networks eliminate the need for an ISP?

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Wireless networks do not eliminate the need for an ISP. While wireless networks provide a means of connecting devices to the internet without the use of physical cables, they still require an internet service provider (ISP) to connect to the internet. The ISP is responsible for providing the internet connection, managing network infrastructure, and routing data between devices and the internet. Therefore, wireless networks and ISPs work together to enable internet connectivity.

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  • 3. 

    What is the primary cause of WLAN signal degradation?

    • Sunspot activity

    • Other WLANs

    • Flux capacitors

    • Interference

    • EMP

    Correct Answer
    A. Interference
    Explanation
    The primary cause of WLAN signal degradation is interference. Interference can occur when other devices or signals operate on the same frequency as the WLAN, causing disruptions in the signal transmission. This can result in slower connection speeds, dropped connections, and overall poor performance. Interference can come from various sources such as other wireless networks, microwave ovens, cordless phones, and even physical obstacles like walls or furniture. It is important to identify and minimize sources of interference to ensure a stable and reliable WLAN connection.

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  • 4. 

    Choose the most secure feature of wireless networking.

    • SSID

    • WEP key

    • Channel Selection

    • Power setting

    Correct Answer
    A. WEP key
    Explanation
    The WEP key is the most secure feature of wireless networking because it provides encryption for data transmitted over the network. It helps to prevent unauthorized access to the network and protect sensitive information from being intercepted by hackers. The WEP key is a password or passphrase that needs to be entered by users in order to connect to the wireless network, ensuring that only authorized individuals can access the network.

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  • 5. 

    What is the wireless networking medium?

    • STP

    • UTP

    • Coax

    • Fiber Optic

    • Atmosphere

    Correct Answer
    A. Atmosphere
    Explanation
    The wireless networking medium refers to the physical environment through which wireless signals travel. In this context, the atmosphere is the correct answer as it is the medium through which wireless signals, such as Wi-Fi or cellular signals, propagate. The atmosphere allows for the transmission of these signals, enabling wireless communication between devices.

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  • 6. 

    What is considered the center point of a standalone wireless network?

    • AP

    • Wireless NIC

    • Antenna

    • Bridge

    • RF signal

    Correct Answer
    A. AP
    Explanation
    The center point of a standalone wireless network is the Access Point (AP). The AP acts as a central hub that connects wireless devices to the network and allows them to communicate with each other. It serves as a bridge between the wireless devices and the wired network, enabling data transmission and providing network access. The AP is responsible for managing the network, controlling the wireless signals, and ensuring seamless connectivity for the devices within the network.

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  • 7. 

    What are the two most commonly used RF frequencies used for wireless Networking?(Choose all that apply)

    • 900 MHz

    • 5.0 GHz

    • 100 Mbps

    • 2.4 GHz

    • 2.4 MHz

    Correct Answer(s)
    A. 5.0 GHz
    A. 2.4 GHz
    Explanation
    The two most commonly used RF frequencies for wireless networking are 5.0 GHz and 2.4 GHz. These frequencies are widely used because they offer a good balance between range and bandwidth. The 5.0 GHz frequency provides higher bandwidth and faster data transfer rates, making it suitable for applications that require high-speed connections. On the other hand, the 2.4 GHz frequency has a longer range and better penetration through walls and obstacles, making it more suitable for wider coverage areas. Therefore, both frequencies are commonly used in wireless networking to accommodate different needs and environments.

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  • 8. 

    Interference that comes from some other transmitting source is called what?

    • EMI

    • TCO

    • RFI

    • VPN

    • LOS

    Correct Answer
    A. RFI
    Explanation
    RFI stands for Radio Frequency Interference. It refers to interference that occurs when a transmitting source, such as another electronic device or equipment, disrupts the normal functioning of a radio signal or communication system. RFI can cause interruptions, distortions, or complete loss of signal, affecting the quality and reliability of wireless communication.

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  • 9. 

    Signaling techologies use which of the following?(Choose all that apoly)

    • VHSS

    • OFDM

    • DSSS

    • IR Light

    • FHSS

    Correct Answer(s)
    A. OFDM
    A. DSSS
    A. FHSS
    Explanation
    Signaling technologies use a combination of OFDM (Orthogonal Frequency Division Multiplexing), DSSS (Direct Sequence Spread Spectrum), and FHSS (Frequency Hopping Spread Spectrum) techniques. OFDM allows for the transmission of multiple signals simultaneously by dividing the frequency spectrum into orthogonal subcarriers. DSSS spreads the signal over a wide frequency band, increasing its resistance to interference. FHSS involves rapidly changing frequencies during transmission, making it difficult for unauthorized users to intercept the signal. These technologies are commonly used in wireless communication systems to ensure reliable and efficient data transmission.

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  • 10. 

    Which of the following are benefits provided by WLANs?(Choose all that apply)

    • Mobility

    • Installation advantages

    • Flexibility

    • Fastest speed

    • Reduced installation time

    Correct Answer(s)
    A. Mobility
    A. Installation advantages
    A. Flexibility
    A. Reduced installation time
    Explanation
    WLANs, or wireless local area networks, provide several benefits. One of the benefits is mobility, as users can access the network from anywhere within the coverage area. Another benefit is installation advantages, as WLANs do not require the installation of physical cables. WLANs also offer flexibility, allowing users to connect multiple devices without the need for additional wiring. Additionally, WLANs can reduce installation time compared to wired networks. However, the statement "Fastest speed" is not a benefit provided by WLANs.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 10, 2009
    Quiz Created by
    Proflds
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