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What is the full form of WLAN?
a. Wide Local Area Network
b. Wireless Local Area Network
c. Wireless Land Access Network
d. Wireless Local Area Node
Answer: b
grt+1
Which organization developed the 802.11 wireless LAN standards?
a. IETF
b. IEEE
c. ITU
d. ISO
Answer: b
testbook+1
Which frequency band is commonly used by traditional Wi-Fi (802.11b/g/n)?
a. 900 MHz
b. 2.4 GHz
c. 5.9 GHz
d. 7 GHz
Answer: b
examradar+1
What does the acronym “SSID” represent in WLANs?
a. Secure Signal Identifier
b. Service Set Identifier
c. System Set Identifier
d. Service Secure Identifier
Answer: b
examradar
Which encryption protocol is most secure for wireless LANs?
a. WEP
b. WPA
c. TLS
d. WPA2
Answer: d
examradar
Which access technique is used in IEEE 802.11 WLANs?
a. TDMA
b. FDMA
c. CSMA/CA
d. CDMA
Answer: c
sanfoundry+1
What is the typical range of a standard WLAN indoors?
a. 2 meters
b. 20 meters
c. 100 meters
d. 1000 meters
Answer: c
sanfoundry+1
In WLAN, which layer does the IEEE 802.11 standard define?
a. Network
b. Physical and Data Link
c. Transport
d. Application
Answer: b
testbook
Which type refers to a WLAN mode where devices communicate directly without an access point?
a. Infrastructure
b. Ad hoc
c. Mesh
d. Bridge
Answer: b
itexamanswers+1
Which is a licensed frequency spectrum for WLAN operation?
a. 2.4 GHz
b. 5 GHz
c. None
d. 900 MHz
Answer: c
grt+1
Which device typically connects a WLAN to a wired LAN?
a. Hub
b. Wireless Bridge
c. Access Point
d. Modem
Answer: c
sanfoundry+1
What does WPA stand for?
a. Wireless Protected Access
b. Wi-Fi Protected Access
c. Wired Protection Algorithm
d. Wideband Protection Access
Answer: b
examradar
What is the main transmission medium in WLANs?
a. Optical Fiber
b. Twisted Pair
c. Radio Waves
d. Coaxial Cable
Answer: c
easyexamnotes+1
Which one is NOT a type of Wi-Fi standard?
a. 802.11a
b. 802.11b
c. 802.11k
d. 802.12a
Answer: d
sanfoundry+1
What is “roaming” in WLANs?
a. Changing channels
b. Moving between coverage of different APs without losing connection
c. Interfering signals
d. Using two bands simultaneously
Answer: b
sanfoundry
What protocol does wireless LAN use to minimize collisions?
a. CSMA/CD
b. Token Ring
c. CSMA/CA
d. PPP
Answer: c
testbook+1
Which Wi-Fi technology provides the highest speed?
a. 802.11a
b. 802.11b
c. 802.11n
d. 802.11g
Answer: c
testbook
Wi-Fi signals may be affected by which of these?
a. Walls
b. Microwave ovens
c. Steel structures
d. All of the above
Answer: d
sanfoundry
Which country first allowed unlicensed spectrum for WLANs?
a. UK
b. Germany
c. USA
d. Japan
Answer: c
grt+1
What is the default maximum data rate for 802.11g Wi-Fi?
a. 2 Mbps
b. 11 Mbps
c. 54 Mbps
d. 600 Mbps
Answer: c
testbook+1
In WLAN, BSS stands for:
a. Basic Service Set
b. Broadcast Satellite System
c. Backup Security Scheme
d. Bridge Service System
Answer: a
testbook
Which of the following is not a valid Wi-Fi security method?
a. WEP
b. WPA
c. MAC Filtering
d. PPTP
Answer: d
examradar
The term “hotspot” in wireless technology refers to:
a. Internet connection over wires
b. High-temperature device
c. Public location providing WLAN access
d. Satellite communications
Answer: c
automationcommunity+1
The smallest unit of a wireless LAN is called:
a. Service Cell
b. Cell
c. Basic Service Set
d. Coverage Area
Answer: c
sanfoundry+1
What is the main function of an access point?
a. Acts as a bridge between wireless and wired networks
b. Stores user data
c. Encrypts all traffic
d. Assigns MAC addresses
Answer: a
sanfoundry+1
The set of all devices connected to an access point is known as:
a. PAN
b. BSS
c. ESS
d. VLAN
Answer: b
testbook
Wired Equivalent Privacy (WEP) is:
a. Secure and modern
b. No longer recommended due to security flaws
c. Based on AES
d. VPN protocol
Answer: b
sanfoundry+1
Which technology does not operate in the 2.4 GHz frequency?
a. 802.11b
b. 802.11a
c. 802.11g
d. Bluetooth
Answer: b
examradar+1
Which of these can be an advantage of WLAN over wired LAN?
a. Mobility
b. Lower cost
c. Easy installation
d. All of the above
Answer: d
sanfoundry+1
What is “channel bonding” in Wi-Fi?
a. Using two different frequency bands
b. Combining two adjacent channels for higher throughput
c. Doubling the antenna length
d. Using cable connections
Answer: b
automationcommunity
The main purpose of MAC address filtering in WLAN security is:
a. Frequency adjustment
b. Limiting network access to authorized devices
c. Boosting speed
d. Changing the SSID
Answer: b
examradar
Which 802.11 standard can use both 2.4 GHz and 5 GHz bands?
a. 802.11g
b. 802.11n
c. 802.11a
d. 802.11b
Answer: b
testbook
The process of assigning IP addresses in WLAN is typically handled by:
a. DNS
b. DHCP
c. NAT
d. FTP
Answer: b
sanfoundry
Which layer are the security protocols WEP, WPA, and WPA2 implemented on?
a. Physical
b. Network
c. Data Link
d. Application
Answer: c
examradar+1
Which of the following is not involved in 802.11 authentication?
a. Open system
b. Shared key
c. WPA2-Enterprise
d. PPPoE
Answer: d
testbook+1
What is the main purpose of RTS/CTS in WLANs?
a. To request IP address
b. To manage access point functions
c. To reduce collisions by reserving the channel
d. To encrypt transmission
Answer: c
testbook
Which device often provides routing for WLANs in home networks?
a. Switch
b. Bridge
c. Router
d. Modulator
Answer: c
examradar
The IEEE 802.11 protocol is most concerned with which two OSI layers?
a. Application and Physical
b. Data Link and Physical
c. Network and Transport
d. Presentation and Physical
Answer: b
testbook
What type of address does every WLAN device possess?
a. IP Address
b. Port Address
c. MAC Address
d. URL
Answer: c
examradar
What is the basic security risk of public WLAN hotspots?
a. Data monitored by admins only
b. No risk
c. Eavesdropping and session hijacking
d. Lack of coverage
Answer: c
automationcommunity+1
Which method increases WLAN network coverage?
a. Lower frequency
b. More access points
c. Shorter antenna
d. Less bandwidth
Answer: b
sanfoundry+1
Which one is not a WLAN topology?
a. Ad hoc
b. Infrastructure
c. Bus
d. Mesh
Answer: c
sanfoundry+1
How can wireless signals be extended in large buildings?
a. Bridges
b. Repeaters or additional APs
c. Unshielded cables
d. Modems
Answer: b
sanfoundry
What does “Wi-Fi” stand for?
a. Wireless Fidelity
b. Wired Fidelity
c. Wide Frequency
d. Wireless Figure
Answer: a
sanfoundry+1
What is true about wireless LANs’ power usage?
a. Very high
b. Medium
c. Low
d. Varies randomly
Answer: c
grt+1
What is the function of the UNII band?
a. Military use
b. Low power, unlicensed spectrum for WLAN
c. High speed copper transmission
d. Satellite communication
Answer: b
grt+1
What protocol enables device-to-device communication without AP?
a. Wi-Fi Direct
b. Bluetooth
c. Zigbee
d. NFC
Answer: a
examradar
Which standard introduced OFDM in Wi-Fi?
a. 802.11b
b. 802.11a
c. 802.11g
d. 802.11n
Answer: b
testbook
Which is NOT a security consideration in WLANs?
a. Encryption
b. Authentication
c. SSID broadcasting
d. DHCP lease time
Answer: d
examradar
What is a common default setting that should be changed for security when setting up a WLAN?
a. Channel number
b. SSID
c. Frequency
d. MAC address
Answer: b

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