Sunday, February 7, 2021

Wi Fi MCQ For HPSSC JOA IT Exam

Wifi MCQ For HPSSC JOA IT Exam

 

Wi Fi MCQ For HPSSC JOA IT Exam

Wi Fi MCQ For HPSSC JOA IT Exam


1. A wireless network uses ___ waves to transmit signals.

a) mechanical

b) radio

c) sound

d) None of these


2. What device sends and receives radio signals in a wireless network?

a) modem

b) digital translator

c) router

d) All of these


3. ______ of the following networking standards, which is not used in Wi-Fi data transmisstions?

a) 802.11g

b) 802.11q

c) 802.11b

d) None of these


4. Which networking standard is the slowest and least expensive?

a) 802.11a

b) 802.11b

c) 802.11n

d) All of these


5. Which networking standard was the first to use orthogonal frequency division multiplexing (OFDM) as a coding technique?

a) 802.11g

b) 802.11a

c) 802.11n

d) None of these


6. Which short range wireless standard is used for Wireless Personal Area Networks (WPANs)?

a) 802.16

b) 802.15

c) 802.13

d) None of these


7. You can change the settings on your wireless router through a Web interface. One option you can change is channel. What channel do routers use by default?

a) 2

b) 7

c) 6

d) None of these


8. Which Operates in the 2.4GHz Industrial, Scientific and Measurement (ISM) band (2.4 GHz to 2.4835 GHz) and provides signaling rates of up to 11 Mbit/sec.

a) 802.11a

b) 802.11b

c) 802.11e

d) 802.11g


9. Which Wi-Fi security is impossible to crack?

a) WEP

b) WPA

c) MAC Filtering

d) None of these


10. What should you do to keep unauthorized users from changing your home router settings?

a) Change the firewall settings on your computer

b) Change the default administrator password and SSID

c) Change the MAC address of the router

d) Nothing, only the administrator can change router settings


11. What are two components necessary to have a wireless network?

a) A laptop and the internet

b) An access point and a WNIC

c) A router and an internet connection

d) A dual layer DVD reader and a LAN


12. What channel is the default for commercially sold routers?

a) Channel 5 

b) Channel 6 

c) Channel 7 

d) Channel 2


13. Why is WEP security not as strong as WPA or WPA2 even though the code key is longer?

a) WPA uses tunneling protocols

b) WEP sends authentication codes with each packet

c) WEP lacks the ability to use special character

d) WEP is not compatible with Windows7 or MAC OS


14. Which wireless protocol uses TKIP?

a) WEP

 b) WPA

c) WPA2

 d) WPS


15. A Wi-Fi enabled device can be ______

a) PC

b) Game Console

c) Mobile phone

d) All of these


16. Wi-Fi uses which kind of multiplexing?

a) OFDM

b) TDM

c) WDM

d) FDM


17. Wifi Alliance for Certified products based on the

a) IEEE 802.3

b) IEEE 802.5

c) IEEE 802.11

d) None of these


18.Does wifi support roaming?

a) Yes

b) No


19. What is the ―acceptable‖ limit for the attenuation of a wifi signal (threshold before breaking signal)

a) 75 dB

 b) 20 db

c) -75 DB 

d) -75 GHz


20. In wireless ad-hoc network _______

a) access point is not required

b) access point is must

c) nodes are not required

d) all nodes are access points


21. Which multiple access technique is used by IEEE 802.11 standard for wireless LAN?

a) CDMA

b) CSMA/CA

c) ALOHA

d) CSMA/CD


22. A wireless LAN is often an extension of the ____ of a wired network

a) Hub

b) Edge

c) Distribution

d) Core


23. Which aspect of Wireless LAN security guards against eavesdropping of wireless LAN traffic?

a) Accounting

b) Authorization

c) Authentication

d) Encryption

Read More:- Mouse MCQ

24. A wireless access point is generally considered to be a layer _____ device.

a) 4

b) 1

c) 2

d) 3


25. Which organization performs inter-operability tests of WiFi devices?

a) WLAN Professionals

b) IEEE

c) Wi-Fi Alliance

d) IANA


26. The Wi-Fi brand was created by which organization?

a) Wi-Fi Allianc

b) IEEE

c) ISO

 d) Cisco


27. Which Wireless LAN network component is responsible for centralized control & management of a WLAN?

a) A network switch

b) An access point

c) A wireless LAN controller

d) A wireless client


28. A WLAN access point converts between 802.___ and 802.____ frames.

a) 802.11ac, 802.11n

b) 802.11, 802.3

c) 802.11i, 802.3

d) 802.1, 802.3


29. The infrastructure components of a wireless network are generally interconnected by:

a) Clients

 b) RF links

c) Switches 

d) All of these


30. Which IEEE standard do Wireless LAN networks conform to?

a) 802.13

b) 802.3

c) 802.11

d) 802.1


31. IEEE 802.11 defines the basic service set as the building block of a wireless

a) LAN 

b) WAN protocol

c) MAN 

d) All of these


32. In wireless LAN, there are many hidden stations so we cannot detect the

a) Frames

b) Collision

c) Signal

d) Data


33. A set that makes stationary or mobile wireless station and also have optional central base station is known as

a) Basic service set

b) Extended service set

c) Network point set

d) Access point


34. The wireless transmission is divided into

a) 3 broad group

b) 6 broad group

c) 9 broad group

d) 8 broad group


35. The WiFi standard which permits transmission distance of 50m with data rate of 54MBPS is ______ .

(a) IEEE 802.11a 

(b) IEEE 802.11b

(c) IEEE 802.11g 

(d) IEEE 802.11n


36. The WiFi standard which permits transmission distance of 100m with data rate of 11MBPS is ______.

(a) IEEE 802.11a 

(b) IEEE 802.11b

(c) IEEE 802.11g

 (d) IEEE 802.11n


37. The WiFi standard which permits transmission distance of 100m with data rate of 54MBPS is ______.

(a) IEEE 802.11a 

(b) IEEE 802.11b

(c) IEEE 802.11g 

(d) IEEE 802.11n


38. The WiFi standard which permits transmission distance of more than 100m with data rate of 100MBPS is ______ .

(a) IEEE 802.11a 

(b) IEEE 802.11b

(c) IEEE 802.11g 

(d) IEEE 802.11n


39. Normally, WiFi signal reach ______ m distance.

(a) 50 to 100m

 (b) 1 to 2m 

(c) 0.5 to 1.0m 

(d) 2 to 3m


40. Name of a WiFi network may be ______ .

(a) visible

 (b) invisible

 (c) both a & b 

(d) none of them


41. Wi-Fi stands for______

a) Wireless Fidelity

b) Wireless Functioning

c) Wireless function

d) None of these


42. Wireless network connections use ______ technologies.

(a) Wireless Fidelity (WiFi) 

(b) Bluetooth

(c) both a & b 

(d) neither a nor b


43. In the modern days, _______ is the best choice for wireless networking.

(a) WiFi 

(b) infrared

(c) radio waves

 (d) micro-wave


44. Wireless networks are _______ wired networks.

(a) slower than 

(b) faster than

(c) as fast as 

(d) none of them


45. In terms of data safety, wireless networks are ______ wired networks.

(a) more secure than

(b) less secure than

(c) as safe as

(d) none of them


46. WiFi networks have _______ for connecting.

(a) name

 (b) password

(c) both a & b 

(d) none of them


47. Open WiFi networks have _______.

(a) a visible name

(b) no password

(c) visible name without any password

(d) All of these

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