EMT Practice Test

1. Question Content...

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Question1: When configuring an AP or controller, what is the collection of settings that define radio operations and the parameters for the BSS?

Question2: Which configuration option allows an 802.11 AP to receive power through an Ethernet connection?

Question3: What is the term used to describe the minimum signal strength required by a device to successfully receive wireless communication?

Question4: What does dual-band refer to in the context of an 802.11 AP?

Question5: Which operating system is commonly used on laptops and desktops?

Question6: Which security problem can occur if the network key used for authentication during the join process in a wireless network is incorrect?

Question7: What do antenna pattern charts represent?

Question8: What is the term used to describe the process of configuring a wireless device to join a specific wireless network?

Question9: EAP-TLS is used for 802.1X/EAP authentication on your WLAN.
What must be installed on all client devices that connect using this method?

Question10: What is the main difference between Personal and Enterprise security modes in 802.11 networks?

Question11: What is the recommended security technology for wireless networks operating in the 6 GHz frequency band?

Question12: How many channels are available in the 2.4 GHz frequency band in all regulatory domains?

Question13: How many non-overlapping channels are available in regulatory domains in the 2.4 GHz frequency band?

Question14: Which operating system is commonly used on Apple devices such as iPhones and iPads?

Question15: What type of mount is suitable for installing an 802.11 AP on a wall?

Question16: What is the maximum channel width recommended in the 2.4 GHz frequency band for 802.11n devices?

Question17: Which factor can contribute to mobility issues in a wireless network if the network settings are not configured correctly?

Question18: How many non-overlapping 20 MHz channels are available in the 5 GHz frequency band assuming the regulatory domain allows them all?

Question19: Which legacy security technology should not be used to secure wireless networks due to its vulnerabilities?

Question20: What is one possible cause of security problems in a wireless network if the EAP method used by the client is not supported by the access point?

Question21: What is the term used to describe the interference caused when multiple devices use the same channel in RF communication?

Question22: Which characteristic of an RF signal is related to the distance between successive peaks?

Question23: What is the maximum power that an 802.3at Power over Ethernet (PoE) injector can output in the Ethernet interface?

Question24: In what kind of device is a mini-PCIe 802.11 adapter most likely to be used?

Question25: Which one of the following is a non-deprecated security solution in the 802.11 standard?

Question26: What is the term used to describe the interference caused when multiple devices compete for the same channel in RF communication?

Question27: What type of interference occurs when multiple devices contend for the same channel in a wireless network?

Question28: What does RSSI stand for in the context of RF signals?

Question29: Which factor can contribute to low data rates in a wireless network?

Question30: In addition to modulation, coding and spatial streams, what has the most impact on available data rates in a WLAN link?

Question31: What is the term used to describe the decrease in signal strength as an RF signal propagates through space?

Question32: When configuring a standalone AP with a web-based interface, what should be changed to protect the HTTP interface used to manage the AP?

Question33: How can RF signal propagation be affected by obstacles or materials?

Question34: At what point is RF power typically stipulated in milliwatts?

Question35: Which management interface allows configuration of an 802.11 AP through a web browser?

Question36: Which of the following describes the frequency of an RF signal?

Question37: You have recently changed the passphrase used with WPA2 in several APs and have reconfigured clients for the new passphrase. Now, a few clients are unable to connect to those APs. Most clients can connect to them just fine.
What is the likely problem?

Question38: You configured an AP for 802.1X/EAP authentication. You also configured several clients for the same. The clients cannot authenticate to the WLAN.
When you look at the RADIUS server logs, you see that no authentication attempts have been made.
Other services use the same RADIUS server without problems.
At what location should you check the configuration for errors?

Question39: Which location process in 802.11 wireless networks involves actively sending probe requests to discover available networks?

Question40: Which RF feature determines the number of simultaneous channels a device can use for communication?

Question41: Which security standard is the most advanced and recommended for securing 802.11 wireless networks?

Question42: What is the term used to describe the increase in signal strength provided by an antenna?

Question43: What is the term used to describe the key used for authenticating a wireless client to a specific access point?

Question44: Which factor can contribute to security issues in a wireless network if the passphrase is not properly configured?

Question45: A dual-band AP most likely supports what two frequency bands?

Question46: You are receiving reports from several users that their clients connect with very low data rates. All reports are confined to a particular area in the facility and the users report that the problem does not occur with the same devices in other areas.
What is most likely problem in that area?

Question47: You have configured a WLAN profile on a client computer for a hidden SSID network. The SSID operates in both 2.4 GHz and 5 GHz. The profile never connects or even attempts to connect.
What is the most likely configuration error in the profile or on the computer?

Question48: Which factor should be considered when selecting the appropriate channel for RF communication?

Question49: Which process in the WLAN connection sequence establishes the encryption keys between the client device and the access point?

Question50: What RF feature determines the range and coverage of a wireless device?

Question51: When clients are using unacceptably low data rates for WLAN transmissions, what metric is too low?

Question52: What best describes passive scanning used to locate WLANs?

Question53: What are the regulatory constraints that may limit the selection of specific channels for RF communication?

Question54: What process is used after authentication to generate and install encryption keys on 802.11 devices using WPA2?

Question55: What does the term "multiple-SSID support" refer to in the context of an 802.11 AP?

Question56: Which factor determines the available channels for RF communication?

Question57: What is the term used for the shared secret key used to authenticate devices in a wireless network?

Question58: What term is used to describe the phenomenon of an RF signal bouncing off a surface?

Question59: A device is a 3x2:2 device.
How many spatial streams can it receive?

Question60: What are some common causes of mobility problems in wireless networks?

Question61: What kind of authentication is used by WPA2-Enterprise implementations?

Question62: A user reports sporadic performance problems with the WLAN. She works near the company lunch room, which has typical kitchen equipment. The problems seem to be worse during the lunch hour.
What is the likely case?

Question63: You are experiencing poor call quality on VoIP handsets in a specific area of the building. When you evaluate the area, you see that the strongest AP signal strength in that area is -89 dBm.
All APs use Fast BSS Transition. No other roaming problem areas exist. No other call quality areas exist.
The same VoIP handsets are used everywhere.
What is most likely causing the call quality problems in that area?