Computer MCQS

391. In a wireless distribution system:
A. Multiple access points are interconnected with each other
B. There is no access point
C. Only one access point exists
D. None of the mentioned

392. A wireless network interface controller can work in:
A. Infrastructure mode
B. Ad-Hoc mode
C. Both A and B
D. None of the mentioned

393. In a wireless network, an extended service set is a set of:
A. Connected basic service sets
B. All stations
C. All access points
D. None of the mentioned

394. Mostly_________ is used in wireless LAN:
A. Time division multiplexing
B. Orthogonal frequency division multiplexing
C. Space division multiplexing
D. None of the mentioned

395. Which one of the following events is not possible in wireless LAN?
A. Collision detection
B. Acknowledgment of data frames
C. Multi-mode data transmission
D. None of the mentioned

396. What is wired equivalent privacy (WEP)?
A. Security algorithm for Ethernet
B. Security algorithm for wireless networks
C. Security algorithm for USB communication
D. None of the mentioned

397. What is WPA?
A. WI-FI protected access
B. Wired protected access
C. Wired process access
D. WI-FI process access

398. Which of these does not constitute guided media?
A. Fiber optical cable
B. Coaxial cable
C. Wireless LAN
D. Copper wire

399. UTP is commonly used in:
A. DSL
B. FTTP
C. HTTP
D. None of the mentioned

400. Coaxial cable consists of __ concentric copper conductors:
A. 1
B. 2
C. 3
D. 4