Lan Questions: MCQ Quiz!

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Quizzes Created: 1 | Total Attempts: 325
Questions: 9 | Attempts: 325

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Lan Questions: MCQ Quiz! - Quiz

Questions and Answers
  • 1. 

    What is the access point (AP) in a wireless LAN?

    • A.

      A device that allows wireless devices to connect to a wired network

    • B.

      Wireless devices itself

    • C.

      Both device that allows wireless devices to connect to a wired network and wireless devices itself

    • D.

      All the nodes in the network

    Correct Answer
    A. A device that allows wireless devices to connect to a wired network
    Explanation
    Access point in a wireless network is any device that will allow the wireless devices to a wired network. A router is the best example of an Access Point.

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  • 2. 

    In wireless ad-hoc network _________

    • A.

      The access point is not required

    • B.

       access point is a must

    • C.

      Nodes are not required

    • D.

      All nodes are access points

    Correct Answer
    A. The access point is not required
    Explanation
    An ad-hoc wireless network is a decentralized kind of a wireless network. An access point is usually a central device, and it would go against the rules of the ad-hoc network to use one. Hence it is not required.

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  • 3. 

    The infrastructure components of a wireless network are generally interconnected by:

    • A.

      RF Links

    • B.

      Clients

    • C.

      Switches

    Correct Answer
    C. Switches
    Explanation
    The infrastructure components of a wireless network, such as access points and routers, are typically interconnected by switches. Switches are networking devices that allow multiple devices to connect and communicate with each other within a local area network (LAN). They provide a central point for all the devices to exchange data and manage the flow of information. In the context of a wireless network, switches play a crucial role in connecting the wired components, like access points, to the rest of the network infrastructure. This enables the wireless network to function efficiently and ensures seamless communication between the various components.

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  • 4. 

    A WLAN access point covers between 802.___ & 802.___ frames.

    • A.

      802.1, 802.3

    • B.

      802.11, 802.3

    • C.

      802.11ac, 802.11n

    • D.

      802.11i,802.3

    Correct Answer
    B. 802.11, 802.3
    Explanation
    A WLAN access point covers between 802.11 and 802.3 frames.

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  • 5. 

    Which multiple access technique is used by IEEE 802.11 standard for wireless LAN?

    • A.

      CDMA

    • B.

      CSMA/CA

    • C.

      ALOHA

    • D.

      CSMA/CD

    Correct Answer
    B. CSMA/CA
    Explanation
    SMA/CA stands for Carrier-sense multiple access/collision avoidance. It is a multiple-access protocol used by IEEE 802.11 standard for wireless LAN. It’s based on the principle of collision avoidance by using different algorithms to avoid collisions between channels.

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  • 6. 

     In wireless distribution system __________

    • A.

      Multiple access point are inter-connected with each other

    • B.

      There is no access point

    • C.

      Only one access point exists

    • D.

      Access points are not required

    Correct Answer
    A. Multiple access point are inter-connected with each other
    Explanation
    A Wireless Distribution System allows the connection of multiple access points together. It is used to expand a wireless network to a larger network.

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  • 7. 

     In a wireless network, an extended service set is a set of ________

    • A.

      All stations

    • B.

      Connected basic service sets

    • C.

       all access points

    • D.

      Connected access points

    Correct Answer
    B. Connected basic service sets
    Explanation
    The extended service set is a part of the IEEE 802.11 WLAN architecture and is used to expand the range of the basic service set by allowing connection of multiple basic service sets.

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  • 8. 

    Mostly OFDM is not used in wireless LAN.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    OFDM (Orthogonal Frequency Division Multiplexing) is actually widely used in wireless LAN (Local Area Network) systems. It is a modulation technique that divides the available frequency spectrum into multiple subcarriers, allowing for efficient data transmission and increased resistance to interference. OFDM is used in various wireless LAN standards such as Wi-Fi (802.11a/g/n/ac/ax) to provide high data rates and improved performance in crowded environments. Therefore, the given statement is incorrect, and the correct answer is False.

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  • 9. 

    What is Wired Equivalent Privacy (WEP)?

    • A.

      Security algorithm for ethernet

    • B.

      Security algorithm for wireless networks

    • C.

      Security algorithm for usb communication

    • D.

       security algorithm for emails

    Correct Answer
    B. Security algorithm for wireless networks
    Explanation
    WEP stands for Wired Equivalent Privacy, which is a security algorithm specifically designed for wireless networks. It was developed to provide a level of security for wireless communications that is comparable to that of a wired network. WEP encrypts data transmitted over a wireless network to protect it from unauthorized access or interception. However, it is important to note that WEP is considered to be weak and vulnerable to various security attacks, and it has been largely replaced by more secure encryption protocols such as WPA and WPA2.

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