Wireless Networks: 802.11 Standards, Speed, and Interference Considerations. IT-FUNDAMENTALS-ITF-CERTIFICATION Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   How does channel overlap affect wireless network performance?

   • AIt has no effect on wireless performance
   • BIt causes interference and reduces throughput
   • CIt reduces interference and improves performance
   • DIt increases the data rate of the network
   Reveal Solution Discussion Select an answer first
2. 12expert · hard

   A network administrator is planning a wireless upgrade for a busy office. The office has a high density of users, and the administrator needs to maximize throughput. The administrator is considering two options: deploying multiple 802.11ac access points on the 5 GHz band or deploying a single 802.11ax access point on the 5 GHz band. Which consideration is most important when making this decision?

   • AMultiple 802.11ac access points can provide better capacity in a high-density environment by distributing the client load, even if each individual access point has a lower maximum data rate.
   • B802.11ax provides higher maximum theoretical data rates than 802.11ac, so a single access point is always the better choice.
   • CThe 5 GHz band has more channels than the 2.4 GHz band, so channel overlap is not a concern with either option.
   • D802.11ax is backward-compatible with 802.11ac, so a single 802.11ax access point will always outperform multiple 802.11ac access points.
   Reveal Solution Discussion Select an answer first
4. 13expert · hard

   A network administrator is troubleshooting a wireless network in a large office. Users on the 5 GHz band report slow speeds, while users on the 2.4 GHz band report acceptable speeds. The administrator discovers that the access points are configured to use 80 MHz channels on the 5 GHz band. Which factor is most likely causing the slow speeds on the 5 GHz band?

   • AThe 5 GHz band is more susceptible to interference from physical obstacles like walls.
   • BThe access points are not configured to use the maximum transmit power on the 5 GHz band.
   • CThe 2.4 GHz band provides higher data rates than the 5 GHz band.
   • DThe 80 MHz channel width is causing interference with neighboring access points using the same channels.
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which 802.11 standard introduced the use of multiple-input multiple-output (MIMO) technology to improve throughput and range?

   • A802.11g
   • B802.11b
   • C802.11a
   • D802.11n
   Reveal Solution Discussion Select an answer first
6. 15application · easy

   A technician is comparing the maximum theoretical data rates of different 802.11 standards to recommend a router for a small business. The business needs to support high-bandwidth applications like video conferencing and large file transfers. Which standard offers the highest maximum theoretical data rate among the options?

   • A802.11ax
   • B802.11ac
   • C802.11n
   • D802.11g
   Reveal Solution Discussion Select an answer first