sinfoera.com – MCQs, Mock Tests | Computer Hardware and Networking WiFi Multiple Choice Questions

1 Wireless networking, or Wi-Fi, can be used to connect computers in a home, and many cities are using the technology to offer free or low-cost Internet access to residents. Whatâ€™s another name for Wi-Fi?

A 801.12 networking B 801.22 networking C 802.11 networking D None of the above

✅ Correct Answer: 3

2 A wireless network uses ___ waves to transmit signals.

A mechanical B radio C sound D None of These

✅ Correct Answer: 2

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

A modem B digital translator C router D None of these

✅ Correct Answer: 3

4 At what frequencies do Wi-Fi radios make transmissions?

A 3 GHz or 8 GHz B 2.4 GHz or 5 GHz C 2 GHz or 7.3 GHz D None of the above

✅ Correct Answer: 2

5 _____ Of the following networking standards, which is not used in Wi-Fi data transmissions?

A 802.11g B 802.11q C 802.11b D None of the above

✅ Correct Answer: 2

6 Which networking standard is the slowest and least expensive?

A 802.11a B 802.11b C 802.11n D None of the above

✅ Correct Answer: 2

7 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 the above

✅ Correct Answer: 2

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

A 802.16 B 802.15 C 802.13 D

✅ Correct Answer: 2

9 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

✅ Correct Answer: 2

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

A 2 B 7 C 6 D None of these

✅ Correct Answer: 3

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

A 802.11a B 802.11b C 802.11e D 802.11g

✅ Correct Answer: 2

12 Which is expected to be ratified sometime in 2005, this Radio Resource Management standard will provide measurement information for access points and switches to make WLANs run more efficiently.

A 802.11a B 802.11b C 802.11e D 802.11k

✅ Correct Answer: 4

13 Which Wi-Fi security is impossible to crack?

A WEP B WPA C MAC Filtering D None of the above

✅ Correct Answer: 4

14 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

✅ Correct Answer: 2

15 What are the 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

✅ Correct Answer: 2

16 What channel is the default for commercially sold routers? A. Channel 5 B. Channel 6

A Channel 5 B Channel 6 C Channel 7 D Channel 2

✅ Correct Answer: 2

17 Which of the following is a sign that you might be on an unsafe network?

A . The connection requires you to sign up for an account ove B There is no password needed to access the internet C You get free access with every fifth frappe D None of the above

✅ Correct Answer: 2

18 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 characters D WEP is not compatible with Windows 7 or Mac OS

✅ Correct Answer: 2

19 Which wireless protocol uses TKIP?

A WEP B WPA C WPA2 D WPS

✅ Correct Answer: 2

20 What is an Evil Twin Attack?

A An attack that mimics your MAC address to enter your network B An attack that denies service to your router C An attack that creates a mock website to trick a user into divulging secure information D An attack that copies all of the files from your router to a secondary hard drive on a hacker computer and then harvests information continuously on your browsing activity

✅ Correct Answer: 3

21 wifi stands for_________

A Wireless Fidelity B Wireless functioning C Wireless function D None of the above

✅ Correct Answer: 1

22 A Wi-fi enabled device can be_____

A PC B Game Console C Mobile phone D All of the above

✅ Correct Answer: 4

23 Wifi uses which kind of multiplexing?

A OFDM B TDM C WDM D FDM

✅ Correct Answer: 1

24 Wifi Alliance for certified products based on the

A IEEE 802.3 B IEEE 802.5 C IEEE 802.11 D None of the above

✅ Correct Answer: 3

25 What is the â€œacceptableâ€ limit for the attenuation of a wifi signal (threshold before breaking signal)

A 75 dB B 20 db C -75 DB D â€“ 75 GHz

✅ Correct Answer: 3

26 How many channels have 2.4 GHz frequency?

A 8 B 10 C 13 D 16

✅ Correct Answer: 3

27 The signal/noise ratio or SNR:

A It is a calculation that determines who makes the most noise in the Office 4001 B This is what means the quality of the transmission of information in relation to parasites C This is a signal that sends noise in a building D None of the above

✅ Correct Answer: 2

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WiFi Multiple Choice Questions