What frequency band does 802.11ac use exclusively?

5 GHz only

Fill in the blank: WEP encryption uses _____ and is completely broken.

RC4

Which three channels on 2.4 GHz do not overlap?
A) 1, 5, 9
B) 1, 6, 11
C) 2, 7, 12
D) 3, 8, 13

B) 1, 6, 11

True or False: Wi-Fi 6E operates on 2.4 GHz, 5 GHz, and 6 GHz bands.

True

What does MIMO stand for in wireless networking?

Multiple Input Multiple Output

A user enters correct password but gets 'Cannot connect' error. What's the first fix?

Remove saved network profile and reconnect

Which encryption should NEVER be used on new networks?
A) WPA2-Personal
B) WPA3-Personal
C) WEP
D) WPA2-Enterprise

C) WEP

What is the maximum theoretical speed of 802.11n?

600 Mbps

True or False: Hiding SSID provides strong wireless security.

False - it's security through obscurity and ineffective

Fill in the blank: WPA3 uses _____ instead of PSK for authentication.

SAE (Simultaneous Authentication of Equals)

Which band provides better wall penetration but more interference?

2.4 GHz

What does MU-MIMO enable in 802.11ac networks?

Multi-User Multiple Input Multiple Output for simultaneous device communication

A warehouse needs 802.11n and 802.11ac support through concrete walls. Best configuration?
A) 5 GHz only
B) Dual-band
C) 2.4 GHz only
D) Single AP

B) Dual-band

What is the typical range of Class 2 Bluetooth devices?

10 meters (33 feet)

True or False: NFC and Bluetooth use the same frequency.

False - NFC uses 13.56 MHz, Bluetooth uses 2.4 GHz

Fill in the blank: Guest networks require _____ enabled to prevent internal access.

Client isolation

Why do Bluetooth keyboards malfunction when Wi-Fi is active?
A) Power conflict
B) Driver issues
C) 2.4 GHz interference
D) USB problems

C) 2.4 GHz interference

What is the maximum range of NFC communication?

4 cm (1.6 inches)

True or False: 802.11ax uses OFDMA for better crowded environment performance.

True

Which wireless mode supports all older standards but reduces performance?

Legacy mode

Fill in the blank: Active RFID tags contain _____ for longer range.

Battery

When should you manually select wireless channels?
A) Always
B) Never
C) During interference
D) Only 5 GHz

C) During interference

What does WPS vulnerability allow attackers to do?

Brute-force attack the wireless network

True or False: MAC filtering provides strong wireless security.

False - easily bypassed through MAC spoofing

All devices get IP but show 'Limited connectivity'. Wired works. Cause?
A) DNS failure
B) Encryption mismatch
C) DHCP issue
D) Firewall block

B) Encryption mismatch

Fill in the blank: Wi-Fi 6 improves battery life through _____.

Target Wake Time (TWT)

Which antenna type radiates signal in all horizontal directions?

Omnidirectional antenna

What frequency do both Bluetooth and 2.4 GHz Wi-Fi share?

2.4 GHz band

True or False: Infrastructure mode requires a central access point.

True

Enterprise gets certificate warnings on WPA2-Enterprise. Solution?
A) Disable certificates
B) Use WPA2-Personal
C) Install root CA
D) Reset device

C) Install root CA

What does channel bonding in 802.11n combine?

Two 20 MHz channels into one 40 MHz channel

Fill in the blank: Mesh networks eliminate _____ by using multiple access points.

Dead zones

Office with 15+ networks on channel 6 experiences slowdowns. Best fix?
A) Increase power
B) Switch to 5 GHz
C) Hide SSID
D) Update firmware

B) Switch to 5 GHz

True or False: Ad-hoc mode creates peer-to-peer connections without access points.

True