2624 Mod 12

A company has recently implemented an 802.11n wireless network. Some users are complaining that the wireless network is too slow. Which solution is the best method to enhance the performance of the wireless network? a. Split the traffic between the 2.4 GHz and 5 GHz frequency bands. b. Disable DHCP on the access point and assign static addresses to the wireless clients. c. none of these d. Replace the wireless NICs on the computers that are experiencing slow connections.

a. Split the traffic between the 2.4 GHz and 5 GHz frequency bands.

Which of the following wireless networks are specified in the IEEE 802.11 standards for the 2.4 GHz and 5 GHz radio frequencies? a. WLAN b. WMAN c. WPAN d. WWAN

a. WLAN

Which 802.11 standard exclusively use the 5 GHz radio frequency? a. 802.11ax b. 802.11a c. 802.11g d. 802.11n

b. 802.11a

True or False: Laptops that do not have an integrated wireless NIC can only be attached to the network through a wired connection. a. T True b. F False

b. F False

A network administrator is working to improve WLAN performance on a dual-band wireless router. What is a simple way to achieve a split-the-traffic result? a. Require all wireless devices to use the 802.11n standard. b. Make sure that different SSIDs are used for the 2.4 GHz and 5 GHz bands. c. Add a Wi-Fi range extender to the WLAN and set the AP and the range extender to serve different bands. d. Check and keep the firmware of the wireless router updated.

b. Make sure that different SSIDs are used for the 2.4 GHz and 5 GHz bands.

Which of the following is a standalone device, like a home router, where the entire WLAN configuration resides on the device? a. USB Wireless NIC b. Range extender c. Autonomous AP d. Controller based AP

b. Range extender

Which of the following modulation techniques spreads a signal over a larger frequency band? a. OFDMA b. FHSS c. DSSS d. OFDM

c. DSSS

Which of the following modulation techniques rapidly switches a signal among frequency channels? a. OFDM b. OFDMA c. FHSS d. DSSS

c. FHSS

Which standards organization is responsible for allocating radio frequencies? a. IEEE b. WIFI-Alliance c. ITU-R d. ISO

c. ITU-R

A technician is troubleshooting a slow WLAN that consists of 802.11b and 802.11g devices . A new 802.11n/ac dual-band router has been deployed on the network to replace the old 802.11g router. What can the technician do to address the slow wireless speed? a. Configure devices to use a different channel. b. Update the firmware on the new router. c. Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band. d. Change the SSID.

c. Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band.