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Network+ Wireless Networking Standards Flashcards

7 cards from real COMPTIA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Network+ Wireless Networking Standards flashcards as text

  1. A network administrator is planning a wireless deployment for a hospital where medical devices use 2.4 GHz and must not be interfered with. Which standard should new client APs use to avoid co-channel issues?

    Answer: Deploy 802.11ac APs using 5 GHz only

    Using 802.11ac (Wi-Fi 5) exclusively on 5 GHz keeps new client traffic off the 2.4 GHz band used by medical devices.

  2. What does the term 'spatial multiplexing' refer to in the context of 802.11n/ac MIMO?

    Answer: Transmitting multiple independent data streams simultaneously using multiple antennas

    Spatial multiplexing sends different data streams on multiple antenna paths simultaneously, increasing throughput proportionally to the number of streams.

  3. Which 802.11 amendment introduced mechanisms for radio resource management, enabling clients to request neighbor AP reports to assist with roaming decisions?

    Answer: 802.11k

    802.11k provides Radio Resource Management, allowing clients to request neighbor reports from APs to make informed roaming decisions.

  4. An 802.11ac AP is configured with a 160 MHz channel. A neighboring company also uses 160 MHz channels on the 5 GHz band. What is the likely outcome?

    Answer: Significant co-channel or adjacent-channel interference reduces performance for both

    160 MHz channels consume a very large portion of the 5 GHz spectrum, making co-channel and adjacent-channel interference highly likely when neighbors also use wide channels.

  5. What is the maximum theoretical data rate for a single spatial stream in 802.11ac with an 80 MHz channel and 256-QAM?

    Answer: 433.3 Mbps

    A single 802.11ac spatial stream with 80 MHz channel width and 256-QAM achieves a maximum PHY rate of 433.3 Mbps.

  6. Which protocol does 802.11ax use to allow multiple clients to transmit UPLINK data to the AP simultaneously, a capability not present in 802.11ac?

    Answer: UL OFDMA and UL MU-MIMO

    Wi-Fi 6 introduced both Uplink OFDMA and Uplink MU-MIMO, allowing multiple clients to send data to the AP simultaneously, unlike 802.11ac which only supported downlink MU-MIMO.

  7. A technician sees the SSID 'CorpWifi' broadcasting on channel 36 with a 40 MHz channel width. What frequency band is this network using?

    Answer: 5 GHz

    Channel 36 is in the 5 GHz UNII-1 band (5.180 GHz); channels in the 2.4 GHz band are numbered 1-14.