Wireless Networking (Wi-Fi) MCQs
What does Wi-Fi stand for?
a) Wireless Fidelity
b) Wireless Frequency
c) Wireless Fiber
d) Wireless Framework
Answer: a) Wireless Fidelity
Which IEEE standard defines Wi-Fi networks?
a) 802.11
b) 802.3
c) 802.16
d) 802.1X
Answer: a) 802.11
What is the maximum theoretical speed of Wi-Fi 6 (802.11ax) in ideal conditions?
a) 1 Gbps
b) 10 Gbps
c) 2 Gbps
d) 6 Gbps
Answer: d) 6 Gbps
Which frequency bands are commonly used for Wi-Fi networks?
a) 2.4 GHz and 6 GHz
b) 2.4 GHz and 5 GHz
c) 5 GHz and 10 GHz
d) 2 GHz and 4 GHz
Answer: b) 2.4 GHz and 5 GHz
What is the primary advantage of using the 5 GHz band over the 2.4 GHz band for Wi-Fi?
a) Longer range
b) Lower interference
c) Better wall penetration
d) Higher device compatibility
Answer: b) Lower interference
Which Wi-Fi standard introduced support for multiple-input and multiple-output (MIMO) technology?
a) 802.11a
b) 802.11b
c) 802.11n
d) 802.11g
Answer: c) 802.11n
What is the purpose of a Wi-Fi extender (range extender)?
a) To increase the speed of Wi-Fi connections
b) To extend the coverage area of a Wi-Fi network
c) To improve security in Wi-Fi networks
d) To manage Wi-Fi channels automatically
Answer: b) To extend the coverage area of a Wi-Fi network
Which Wi-Fi security protocol is considered the most secure among these options?
a) WEP
b) WPA
c) WPA2
d) None of the above
Answer: c) WPA2
What is a disadvantage of using WEP (Wired Equivalent Privacy) for Wi-Fi security?
a) It requires complex configuration
b) It is vulnerable to security attacks
c) It supports high-speed data transfers
d) It is compatible with all Wi-Fi devices
Answer: b) It is vulnerable to security attacks
Which feature of WPA3 (Wi-Fi Protected Access 3) enhances security over WPA2?
a) Stronger encryption algorithms
b) Higher data transfer speeds
c) Lower latency
d) Increased compatibility with legacy devices
Answer: a) Stronger encryption algorithms
What does SSID stand for in Wi-Fi networks?
a) Secure System Identifier
b) Service Set Identifier
c) System Signal Identifier
d) Secure Signal Detector
Answer: b) Service Set Identifier
Which of the following is not a method to secure a Wi-Fi network?
a) Disabling SSID broadcast
b) MAC address filtering
c) Using a default SSID
d) Enabling WPA2 encryption
Answer: c) Using a default SSID
Which Wi-Fi feature allows devices to connect without entering a password manually?
a) WPA2
b) WPS
c) WEP
d) WPA3
Answer: b) WPS (Wi-Fi Protected Setup)
What does WPS (Wi-Fi Protected Setup) primarily facilitate?
a) Automatic encryption setup for Wi-Fi networks
b) Automatic firmware updates for Wi-Fi routers
c) Automatic channel selection for Wi-Fi networks
d) Automatic SSID configuration for Wi-Fi networks
Answer: a) Automatic encryption setup for Wi-Fi networks
Which Wi-Fi technology allows seamless roaming between access points with the same SSID?
a) MU-MIMO
b) MIMO
c) Mesh networking
d) WDS (Wireless Distribution System)
Answer: c) Mesh networking
What is a benefit of using MU-MIMO (Multi-User, Multiple-Input, Multiple-Output) technology in Wi-Fi networks?
a) Improved signal range
b) Reduced latency
c) Enhanced throughput for multiple devices
d) Better security encryption
Answer: c) Enhanced throughput for multiple devices
Which Wi-Fi technology is designed to improve coverage and reduce dead zones in large areas?
a) MU-MIMO
b) Beamforming
c) WEP
d) WPA2
Answer: b) Beamforming
What is a characteristic of beamforming in Wi-Fi technology?
a) It reduces interference from other Wi-Fi networks
b) It increases the range of Wi-Fi signals
c) It decreases the speed of Wi-Fi connections
d) It requires a wired Ethernet connection
Answer: b) It increases the range of Wi-Fi signals
Which Wi-Fi standard operates exclusively in the 5 GHz frequency band?
a) 802.11a
b) 802.11b
c) 802.11g
d) 802.11n
Answer: a) 802.11a
Which Wi-Fi standard introduced the use of OFDM (Orthogonal Frequency Division Multiplexing) technology?
a) 802.11b
b) 802.11g
c) 802.11n
d) 802.11ac
Answer: b) 802.11g
Which Wi-Fi standard is also known as Wi-Fi 5?
a) 802.11a
b) 802.11ac
c) 802.11n
d) 802.11g
Answer: b) 802.11ac
What is a characteristic of 802.11ac Wi-Fi technology?
a) Operates exclusively in the 2.4 GHz band
b) Provides faster speeds than 802.11n
c) Supports only MIMO technology
d) Uses OFDM modulation
Answer: b) Provides faster speeds than 802.11n
Which Wi-Fi standard supports dual-band operation in both 2.4 GHz and 5 GHz bands?
a) 802.11a
b) 802.11g
c) 802.11n
d) 802.11ac
Answer: c) 802.11n
What is a characteristic of 802.11ax (Wi-Fi 6) technology?
a) Supports only the 2.4 GHz band
b) Provides lower maximum data rates than 802.11ac
c) Uses MU-MIMO and OFDMA technologies
d) Operates at a lower frequency than 802.11n
Answer: c) Uses MU-MIMO and OFDMA technologies
Which Wi-Fi standard introduced the use of WPA3 security protocol?
a) 802.11ac
b) 802.11ax
c) 802.11n
d) 802.11i
Answer: b) 802.11ax
What is a benefit of using the 2.4 GHz band for Wi-Fi connections?
a) Higher data transfer rates
b) Better performance in crowded environments
c) Lower interference from other devices
d) Longer range compared to the 5 GHz band
Answer: d) Longer range compared to the 5 GHz band
Which Wi-Fi technology allows multiple access points to work together as a single network?
a) MIMO
b) Beamforming
c) Mesh networking
d) WEP
Answer: c) Mesh networking
What is the maximum theoretical speed of Wi-Fi 5 (802.11ac) in ideal conditions?
a) 600 Mbps
b) 1 Gbps
c) 3 Gbps
d) 5 Gbps
Answer: c) 3 Gbps
Which Wi-Fi technology uses multiple antennas to transmit and receive data simultaneously?
a) Beamforming
b) MIMO
c) OFDM
d) WPA3
Answer: b) MIMO
What is a characteristic of the 802.11ah Wi-Fi standard?
a) Operates in the 2.4 GHz band
b) Designed for low-power, long-range applications
c) Provides the highest data rates among all Wi-Fi standards
d) Uses OFDMA technology exclusively
Answer: b) Designed for low-power, long-range applications
Which Wi-Fi technology dynamically assigns channel bandwidth based on network demands?
a) MIMO
b) Beamforming
c) OFDM
d) OFDMA
Answer: d) OFDMA (Orthogonal Frequency Division Multiple Access)
What does OFDMA (Orthogonal Frequency Division Multiple Access) enable in Wi-Fi networks?
a) Higher frequency bands for data transmission
b) Simultaneous transmission to multiple devices in one transmission
c) Better signal propagation over long distances
d) Lower interference from neighboring Wi-Fi networks
Answer: b) Simultaneous transmission to multiple devices in one transmission
Which Wi-Fi technology is designed to improve efficiency in high-density environments?
a) 802.11ax (Wi-Fi 6)
b) 802.11ac (Wi-Fi 5)
c) 802.11n
d) 802.11g
Answer: a) 802.11ax (Wi-Fi 6)
What is a characteristic of a WPA3-Personal security protocol?
a) Uses a 64-bit encryption key
b) Supports up to 128 simultaneous connections
c) Provides individualized encryption for each user
d) Requires manual key distribution
Answer: c) Provides individualized encryption for each user
Which Wi-Fi technology is backward compatible with older Wi-Fi standards?
a) 802.11g
b) 802.11ac
c) 802.11n
d) 802.11ax
Answer: d) 802.11ax
What is a benefit of using WPA3-SAE (Simultaneous Authentication of Equals) in Wi-Fi security?
a) Reduced latency in Wi-Fi connections
b) Better compatibility with legacy devices
c) Enhanced protection against dictionary attacks
d) Improved range for Wi-Fi signals
Answer: c) Enhanced protection against dictionary attacks
Which Wi-Fi technology offers backward compatibility with Bluetooth devices?
a) 802.11ax (Wi-Fi 6)
b) 802.11ac (Wi-Fi 5)
c) 802.11n
d) 802.11g
Answer: a) 802.11ax (Wi-Fi 6)
What is a characteristic of the 802.11ad Wi-Fi standard?
a) Operates in the 5 GHz band
b) Uses MIMO technology
c) Provides multi-gigabit data rates over short distances
d) Designed for long-range communications
Answer: c) Provides multi-gigabit data rates over short distances
Which Wi-Fi technology is designed for IoT (Internet of Things) devices with low power consumption requirements?
a) 802.11ah
b) 802.11ad
c) 802.11ax
d) 802.11n
Answer: a) 802.11ah
What is a benefit of using a Wi-Fi 6 (802.11ax) router in a home network?
a) Higher data transfer rates for each device
b) Better security encryption than WPA3
c) Longer range compared to Wi-Fi 5
d) Reduced latency in online gaming
Answer: a) Higher data transfer rates for each device
Which Wi-Fi standard uses the 60 GHz frequency band for high-speed data transfer over short distances?
a) 802.11ah
b) 802.11ad
c) 802.11ax
d) 802.11ac
Answer: b) 802.11ad
What is a characteristic of the 802.11af Wi-Fi standard?
a) Operates in the 2.4 GHz band
b) Uses MIMO technology exclusively
c) Uses TV white space spectrum for data transmission
d) Provides data rates up to 10 Gbps
Answer: c) Uses TV white space spectrum for data transmission
Which Wi-Fi technology uses channels that do not overlap with other channels to reduce interference?
a) 802.11ac
b) 802.11n
c) 802.11g
d) 802.11a
Answer: d) 802.11a
What does a Wi-Fi analyzer tool help diagnose in a Wi-Fi network?
a) Network security vulnerabilities
b) Signal strength and interference issues
c) Router hardware failures
d) DNS server configuration errors
Answer: b) Signal strength and interference issues
Which Wi-Fi technology uses dynamic frequency selection (DFS) to avoid interference from radar systems?
a) 802.11n
b) 802.11ac
c) 802.11ax
d) 802.11h
Answer: d) 802.11h
What is a benefit of using 802.11ac Wave 2 Wi-Fi technology?
a) Lower maximum data rates compared to Wave 1
b) Improved channel bonding for higher throughput
c) Reduced compatibility with older Wi-Fi devices
d) Limited support for MU-MIMO technology
Answer: b) Improved channel bonding for higher throughput
Which Wi-Fi technology uses the highest number of spatial streams for data transmission?
a) 802.11ac
b) 802.11n
c) 802.11ax
d) 802.11ad
Answer: a) 802.11ac
What is a characteristic of the 802.11ay Wi-Fi standard?
a) Operates in the 2.4 GHz band
b) Provides multi-gigabit data rates over short distances
c) Uses OFDMA technology exclusively
d) Designed for long-range communications
Answer: b) Provides multi-gigabit data rates over short distances
Which Wi-Fi technology is designed for high-density environments such as stadiums and convention centers?
a) 802.11ax (Wi-Fi 6)
b) 802.11n
c) 802.11g
d) 802.11ad
Answer: a) 802.11ax (Wi-Fi 6)
What is a benefit of using MU-OFDMA (Multi-User Orthogonal Frequency Division Multiple Access) in Wi-Fi 6 networks?
a) Lower power consumption in devices
b) Improved spectrum efficiency and capacity
c) Longer range compared to previous Wi-Fi standards
d) Higher compatibility with legacy Wi-Fi devices
Answer: b) Improved spectrum efficiency and capacity