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 MI...
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
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