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NCTI WIFI (2022/2023) Rated A+

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NCTI WIFI (2022/2023) Rated A+ Notes Single input, single output (SISO) - Most systems have one radio and one antenna, and some systems have one radio and two antennas. Multiple input, multiple output (MIMO) - These systems use multiple radio chains in a single wireless chipset. Multi-user MIMO (MU-MIMO) - These systems use each radio chain on an access point to transmit to a unique client.Correct answer: Wired Equivalent Protection (WEP) - This type of security setup should never be used for a wireless network as it can be quickly be broken. WPA/WPa2 -Personal - This type of security uses an 8-63 character passphrase that all network users share. WPA/WPA2-Enterprise - In this type of security setup, everyone has a unique username and password, which allows IT departments to track individual users and reset unique user passwords without having to change the passphrase for the entire network. Wi-Fi Protected Setup (WPS) - This type of security setup allows new devices to be added to a network with a button press or an 8-digit PIN number. test one Question #1: Multiple Choice - choose 1 answer Which modulation scheme works by varying the height, or loudness, of a wave to convey information? B) Amplitude modulation (AM). Question #2: Multiple Choice - choose 1 answer Which modulation scheme works by adjusting the length of a wave to convey information? B) Frequency modulation (FM). Question #3: Multiple Choice - choose 1 answer Which IEEE standard specifies media access and Physical Layer specifications for wireless connectivity between fixed, portable, and moving stations within a local area? C) 802.11. Question #4: Multiple Choice - choose 1 answer Which IEEE 802.11 amendment is a 5 GHz-only standard that can theoretically reach 7 Gbps? A) 802.11ac. Question #5: Multiple Choice - choose 1 answer Which of the following is an example of a wide area network (WAN)? B) The Internet. Question #6: Multiple Choice - choose 1 answer Which of the following handles the long distance wide area network (WAN) communication link with the Internet service provider or managed services operator? C) Modem. Question #7: Multiple Choice - choose 1 answer What connects wireless client devices, such as laptops, phones, tablets, and media players to the wired network? C) Access point. Question #8: Multiple Choice - choose 1 answer Which type of directional antenna is usually called a "high-density" directional antenna? B) Semi-directional antenna. Question #9: Multiple Choice - choose 1 answer What type of system uses one radio chain to transmit and receive data? A) Single input, single output (SISO). Question #10: Multiple Choice - choose 1 answer Which security setup allows new devices to be added to a network with a button press or an 8- digit PIN? D) Wi-Fi Protected Setup (WPS). 9-15-1 Understanding Wi-Fi Question #1: Multiple Choice - choose 1 answer Which security standard is considered the best form of security because it is the most secure and does not limit network data rates? D) Wi-Fi Protected Access 2/Advanced Encryption Standard (WPA2/AES) Question #2: Multiple Choice - choose 1 answer How many channels are available in the 5 GHz ba

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