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Wi-Fi (UGC/ NET)

Wi-Fi technology covering IEEE 802.11 standards, security, architecture, and specifications

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is incorrect about Wi-Fi technology?

  1. Wi-Fi stands for wireless fidelity.
  2. Wi-Fi also refers to an IEEE standard 802.11.
  3. DCF (Distributed Coordination Function) and PCF (Point Coordination Function) are two general types of Wi-Fi transmission.
  4. Wi-Fi uses infrared to transmit and receive data at high speed.
  5. Wi-Fi offers higher peak data rates than do 3G systems.
Question 2 Multiple Choice (Single Answer)

Which of the following services comes under Distribution System Services (DSS) specified by IEEE 802.11?

  1. Authentication
  2. Deauthentication
  3. MSDU Delivery
  4. Integration
  5. Privacy
Question 3 Multiple Choice (Single Answer)

In the given options, which of the following is not related to Wi-Fi security?

  1. Service Set Identifier (SSID).
  2. Wired Equivalent Privacy (WEP).
  3. IEEE 802.11e
  4. Wireless Protected Access (WPA).
  5. IEEE 802.11i
Question 4 Multiple Choice (Single Answer)

A set of Basic service set [BSS] forming a virtual BSS is called

  1. station
  2. distribution system
  3. extended service set
  4. access point
  5. basic service set
Question 5 Multiple Choice (Single Answer)

For secure Wi-Fi connection, a user needs a WEP key. What is the full form of WEP?

  1. Wireless Ethernet Protocol
  2. Wired Equipment Privacy
  3. Wireless Equipment Privacy
  4. Wired Equipment Protocol
  5. Wide Equipment Protocol
Question 6 Multiple Choice (Single Answer)

An IEEE 802.11 standard, which is a physical layer standard that works in unlicensed 5-GHz radio band using Orthogonal Frequency Division Multiplexing is known as:

  1. IEEE 802.11c.
  2. IEEE 802.11a.
  3. IEEE 802.11f.
  4. IEEE 802.11h.
  5. IEEE 802.11d.
Question 7 Multiple Choice (Single Answer)

Which of the following statement is incorrect about an IEEE standard 802.11n?

  1. An IEEE standard 802.11n was standardized in 2009.
  2. An IEEE standard 802.11n extends 802.11b and .11g standard.
  3. An IEEE standard 802.11n uses 5.725 GHz frequency bands.
  4. An IEEE standard 802.11n uses MIMO (Multiple Input Multiple Output) by having multiple antennae at both sender and receiver.
  5. Expected total multi-station throughput of an IEEE standard 802.11n is 600 Mbps.
Question 8 Multiple Choice (Single Answer)

Which of the following 802.11 standard specification adds support for data exchange between high-speed vehicles and between vehicles and roadside infrastructure?

  1. 802.11g.
  2. 802.11a.
  3. 802.11i.
  4. 802.11p.
  5. 802.11e.
Question 9 Multiple Choice (Single Answer)

Which of the following statements is incorrect about the Wi-Fi IEEE standard 802.11a?

  1. The Wi-Fi standard IEEE 802.11a is introduced in 1999.
  2. The Wi-Fi standard IEEE 802.11a operates at 5GHz.
  3. The theoretical speed and actual speed of Wi-Fi standard IEEE 802.11a are 54 Mbps and 15-20 Mbps.
  4. The Wi-Fi standard IEEE 802.11a is least expensive than IEEE 802.11b.
  5. 50-75 is the feet range of the Wi-Fi standard IEEE 802.11a.
Question 10 Multiple Choice (Single Answer)

A Wi-Fi device which connects a wired network to a wireless network is called:

  1. Wireless routers
  2. Wireless ethernet bridge
  3. Wireless access point (WAP)
  4. Wireless range extender
  5. Channel
Question 11 Multiple Choice (Single Answer)

Which of the following are Supported Data Rates by the Wi-Fi IEEE standard 802.11b?

  1. 1, 2, 5.5, 11 Mbps.
  2. 6, 9, 12, 18, 24, 36, 48, 54 Mbps.
  3. 1, 2 Mbps.
  4. 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, 54, 121.5, 130, 144.44, 270, 300 Mbps.
  5. 1, 2, 5.5, 11, 6, 9, 12, 18, 22, 24, 33, 36, 48, 54 Mbps.
Question 12 Multiple Choice (Single Answer)

Which of the following is not a main component of 802.11 frames?

  1. Preamble
  2. PLCP header
  3. MAC data
  4. Protocol version
  5. CRC
Question 13 Multiple Choice (Single Answer)

Which of the following statement is incorrect about Infrastructure mode of Wi-Fi?

  1. In Infrastructure mode, all packets go through a base station.
  2. In Infrastructure mode, devices are capable for communicating directly with each other.
  3. In Infrastructure mode, an ESS is identified with an ESSID (Extended Service Set Identifier), a 32-character identifier (in ASCII format) which acts as its name on the network.
  4. In Infrastructure mode, each BSS is identified by a BSSID, a 6-byte (48-bite) identifier.
  5. In Infrastructure mode, Wireless Access Points are usually routers or switches which are connected to the internet by Ethernet port.
Question 14 Multiple Choice (Single Answer)

Which of the following is approximate outdoor range of IEEE standard 802.11n?

  1. 70 metres and 230 feet
  2. 140 metres and 460 feet
  3. 38 metres and 125 feet
  4. 250 metres and 820 feet
  5. 120 metres and 390 feet
Question 15 Multiple Choice (Single Answer)

What is another name of IEEE standard 802.16x?

  1. Wi-Fi
  2. Wimax
  3. GSM
  4. Bluetooth
  5. Wi-Fi5
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