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What is the primary purpose of a deauthentication frame in IEEE 802.11 networks?
a. To establish a connection between client and access point
b. To terminate an authenticated session between client and access point
c. To encrypt data packets
d. To increase bandwidth
Answer: bscribd+1
Which type of attack exploits deauthentication frames to disconnect devices from a Wi-Fi network?
a. Man-in-the-middle attack
b. Deauthentication attack
c. Address spoofing attack
d. Buffer overflow attack
Answer: btwingate+2
What layer of the OSI model does deauthentication operate on in IEEE 802.11 wireless networks?
a. Physical
b. Data Link
c. Network
d. Application
Answer: bgtu-mcq+1
Which tool is commonly used to perform deauthentication attacks?
a. Netstat
b. Aircrack-ng
c. Wireshark
d. Telnet
Answer: baircrack-ng+2
Deauthentication frames in Wi-Fi networks are:
a. Encrypted
b. Digitally signed
c. Sent in plaintext
d. Authenticated by default
Answer: cgeeksforgeeks+1
What is the effect of a deauthentication attack on a wireless client?
a. Boosts bandwidth
b. Disconnects from the access point
c. Encrypts the network traffic
d. Changes the IP address
Answer: blinkedin+2
What can an attacker achieve by forcing reauthentication through repeated deauthentication attacks?
a. Wireless sniffing opportunities (handshake capture)
b. Stronger encryption
c. Reduced latency
d. Automatic malware removal
Answer: atwingate+1
Which IEEE amendment introduced Protected Management Frames (PMF) to secure deauthentication?
a. 802.11a
b. 802.11ac
c. 802.11w
d. 802.11n
Answer: cgeeksforgeeks+1
Which of the following is a real-world consequence of deauthentication attacks?
a. Creation of rogue access points
b. Denial of service to legitimate users
c. Increased wireless coverage
d. Improved packet delivery
Answer: bwikipedia+2
To mitigate deauthentication attacks, which Wi-Fi security standard is recommended?
a. WEP
b. WPA
c. WPA2
d. WPA3
Answer: dtwingate+1
What does a deauthentication attack target?
a. Encryption mechanism
b. Authentication process
c. Frame checksum
d. VLAN tagging
Answer: blinkedin+1
Which command in aircrack-ng suite initiates a deauthentication attack?
a. aireplay-ng -1
b. aireplay-ng -2
c. aireplay-ng -0
d. aireplay-ng -9
Answer: caircrack-ng
Which of the following is NOT a reason code for deauthentication in IEEE 802.11?
a. Previous authentication expired
b. User opted to logout
c. Authentication left unchanged
d. Reassociation required
Answer: cscribd
Which protocol feature provides encryption for deauthentication frames in modern Wi-Fi networks?
a. TKIP
b. PMF (Protected Management Frames)
c. 4-way handshake
d. WEP keys
Answer: bgeeksforgeeks
Who can send deauthentication frames according to IEEE 802.11 protocol?
a. Only the access point
b. Only the client
c. Both client and access point
d. Only network administrator
Answer: cscribd+1
What is one main use of deauthentication in legitimate Wi-Fi operation?
a. Initiating DHCP lease
b. Terminating a connection upon client request
c. Performing port scanning
d. Broadcasting SSID
Answer: bscribd
The lack of encryption for deauthentication frames before WPA3 made what attack easier?
a. Man-in-the-middle attack
b. Worm propagation
c. Deauthentication attack
d. DNS spoofing
Answer: cwikipedia+2
In a deauthentication attack, the attacker typically needs:
a. Physical access to the router
b. Proximity to the wireless network
c. Root access to client devices
d. Admin credentials
Answer: btwingate+1
Which common reason do attackers force deauthentication?
a. To improve network speed
b. To capture WPA/WPA2 handshakes
c. To access physical media
d. To alter MAC addresses
Answer: baircrack-ng+1
What is the typical result of a successful deauthentication attack in a public place?
a. Increase in throughput
b. Multiple devices lose Wi-Fi connection
c. All data becomes encrypted
d. Devices switch to mobile data automatically
Answer: byeahhub+2
What property of deauthentication frames makes them easy to spoof in older protocols?
a. Use of ARP
b. Absence of cryptographic protection
c. MAC address filtering
d. Reverse DNS lookup
Answer: bgeeksforgeeks+1
What distinguishes deauthentication from disassociation in IEEE 802.11?
a. Only one is a management frame
b. Deauthentication revokes authentication; disassociation terminates association
c. Both are unauthorized actions
d. Only disassociation disconnects a client
Answer: btwingate+1
Which wireless network scenario is MOST vulnerable to deauthentication attacks?
a. Home networks with WPA3
b. Enterprise networks with radius authentication and PMF
c. Open or public networks without PMF
d. Mesh networks using EAP-TLS
Answer: cgeeksforgeeks+1
An attacker performing a deauthentication attack typically uses which kind of hardware?
a. Bluetooth adapter
b. Packet-injecting wireless NIC
c. Ethernet hub
d. Serial port card
Answer: baircrack-ng+1
What is the function of the -c option in the aircrack-ng deauthentication command?
a. Specifies the number of channels
b. Chooses client MAC address to target
c. Lists connected devices
d. Starts channel hopping
Answer: baircrack-ng
In Wi-Fi, after deauthentication, what must a device do to reconnect?
a. Change its password
b. Perform association and authentication again
c. Only request a new IP address
d. Update its firmware
Answer: bscribd+1
The primary objective of a Wi-Fi deauthentication attack is:
a. To boost network coverage
b. To cause Denial of Service
c. To harden encryption keys
d. To facilitate load balancing
Answer: bexamtopics+1
What is the default behavior when a client receives a deauthentication frame?
a. Reboots device
b. Disconnects from access point immediately
c. Ignores the frame
d. Increases transmission power
Answer: bwikipedia+1
Which IEEE 802.11 feature was added specifically to prevent spoofed deauthentication attacks?
a. Beacon frames
b. PMF (Protected Management Frames)
c. SSID hiding
d. RTS/CTS mechanism
Answer: btwingate+1
A deauthentication frame contains which key field in its structure?
a. Source IP address
b. Reason code
c. VLAN ID
d. Payload length
Answer: bscribd
What is one sign of a deauthentication attack on a Wi-Fi client?
a. Slower downloads
b. Frequent unexpected disconnects
c. MAC address conflict errors
d. High CPU usage
Answer: blinkedin+1
What security action helps identify possible deauthentication attacks?
a. Using static IP addresses
b. Wireless Intrusion Detection Systems (WIDS)
c. Overclocking routers
d. Disabling DHCP
Answer: bgeeksforgeeks+1
Which aspect of WPA3 directly helps mitigate deauthentication attacks?
a. Longer encryption key length
b. PMF requirement
c. SSID obfuscation
d. Dual-band communication
Answer: btwingate+1
Which is not a primary reason for legitimate deauthentication?
a. Policy violation
b. Authentication timeout
c. Packet sniffing
d. Network configuration change
Answer: cscribd
What is the safest method to prevent deauthentication attacks on public Wi-Fi?
a. Enabling MAC address filtering
b. Using WPA3 with PMF
c. Disabling SSID broadcasting
d. Setting short DHCP lease durations
Answer: bgeeksforgeeks+1
Which scenario allows an attacker to perform a targeted deauthentication attack?
a. No clients connected
b. Client MAC address is known
c. All clients using VPN
d. Network operating in 5GHz only
Answer: baircrack-ng+1
An attacker can benefit from deauthentication by:
a. Forcing captive portal redirection
b. Capturing handshake for offline cracking
c. Encrypting all wireless packets
d. Blocking SSID advertisements
Answer: baircrack-ng+1
Why are deauthentication frames easily captured with Wireshark?
a. They are always TCP packets
b. They are unencrypted and clearly marked in management frames
c. They are hidden from view
d. They require administrative privileges
Answer: bscribd+1
What should be enabled on WPA2 networks to better protect against deauthentication attacks?
a. PMF (Protected Management Frames)
b. Static channel selection
c. QoS features
d. Disabling 802.11b support
Answer: atwingate+1
What is a key limitation of deauthentication attacks?
a. Routers detect and block all attempts automatically
b. They only work if the attacker is within wireless range
c. They increase network speed
d. They rely on DNS spoofing
Answer: bgeeksforgeeks+1
IEEE 802.11w extension improves security by:
a. Encrypting all user data traffic
b. Protecting management frames including deauthentication
c. Routing via multiple APs
d. Disabling client isolation
Answer: btwingate+1
What is affected if a client is under active deauthentication attack?
a. Device battery life only
b. Device loses network connectivity repeatedly
c. Access point configuration
d. LAN cabling
Answer: blinkedin+1
Which device is NOT involved in the deauthentication process?
a. Client station
b. Access point
c. Intermediate router in another subnet
d. Wireless controller (in enterprise)
Answer: cscribd
What is the minimal information needed to conduct a directed deauthentication attack?
a. SSID and WPA Key
b. BSSID/AP MAC and Client MAC address
c. Network password
d. ARP tables
Answer: baircrack-ng+1
Which consequence is unique to deauthentication attacks compared to basic jamming?
a. Disconnects target clients from network by protocol means
b. Raises only physical interference
c. Requires wired connection
d. Increases latency only
Answer: ageeksforgeeks+1
Disassociation differs from deauthentication in that:
a. Both remove all security associations
b. Disassociation only ends data transfer, not authentication itself
c. Only deauthentication revokes encryption keys
d. Disassociation is always malicious
Answer: btwingate+1
In a wireless capture, what identifies a deauthentication frame?
a. Protocol field set to TCP
b. Frame Control field subtype set to deauthentication
c. Destination port is 80
d. All payload bits set to zero
Answer: bscribd
What helps detect a deauthentication attack in real-time?
a. Manual client checks
b. Wireless Intrusion Detection/Prevention Systems
c. Scheduled router reboots
d. Limiting DHCP pool sizes
Answer: bgeeksforgeeks+1
Continuous unexplained Wi-Fi drops could BEST indicate:
a. Network cable faults
b. Ongoing deauthentication attack
c. OS driver incompatibility
d. DNS misconfiguration
Answer: blinkedin+1
Which network configuration most enhances resistance to deauthentication attacks?
a. Use of WPA3/802.11w and enable PMF
b. Short pre-shared key cycles
c. Frequent AP reboots
d. Lowered transmit power
Answer: atwingate+1

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