Wireless Network Fundamentals and Standards NDE Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   In wireless communication, what is the primary role of modulation?

   • ATo convert the signal from analog to digital form
   • BTo amplify the signal strength to extend the coverage area
   • CTo filter out interference from other wireless devices
   • DTo encode data onto a radio frequency carrier signal
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A small branch office needs to provide wireless access for about 30 employees using laptops and smartphones. The office has a single wired Ethernet drop in a central location. The IT admin wants to minimize cabling and keep the deployment simple. Which wireless topology and component combination should the admin choose?

   • AUse a wireless bridge to connect the office's wired switch to a second switch on the other side of the room, then connect clients via Ethernet.
   • BSet up an ad-hoc network among all laptops and smartphones, designating one laptop as the host.
   • CDeploy an access point in infrastructure mode connected to the wired drop, and configure all clients to associate with that AP.
   • DInstall a wireless repeater in the middle of the office and have all clients connect to the repeater, which connects wirelessly to the wired drop.
   Reveal Solution Discussion Select an answer first
4. 18expert · hard

   A network administrator is troubleshooting slow Wi-Fi performance in a crowded office. They suspect that many devices are using the 2.4 GHz band. What is the most effective way to encourage devices to use the 5 GHz band?

   • ASet the 2.4 GHz SSID to a different name and do not broadcast it.
   • BDisable the 2.4 GHz radio on the access point.
   • CEnable band steering on the access point.
   • DIncrease the transmit power of the 5 GHz radio.
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A network administrator is choosing a wireless standard for a new deployment that will support many IoT devices in a smart building. The devices are low-power and need to communicate over short distances. Which standard is most appropriate?

   • A802.11ax (Wi-Fi 6)
   • B802.11n (Wi-Fi 4)
   • C802.11ac (Wi-Fi 5)
   • D802.15.4 (Zigbee)
   Reveal Solution Discussion Select an answer first
6. 20application · medium

   A hospital is deploying a wireless network for patient monitoring devices that require low latency and high reliability. The network team must ensure that the monitoring devices can roam seamlessly between access points without re-authenticating. Which component or feature is essential for this requirement?

   • AA wireless repeater to extend coverage between APs.
   • BA high-gain omnidirectional antenna on each access point.
   • CA wireless controller that coordinates fast roaming and handles authentication centrally.
   • DA RADIUS server that requires re-authentication on every AP change.
   Reveal Solution Discussion Select an answer first