Wireless Technologies Questions and Answers

Q: MANET stands for

MANET stands for Mobile Ad-Hoc Network.A MANET is a self-configuring network of mobile devices connected wirelessly without any fixed infrastructure such as routers or access points. Every node also acts as a router, forwarding packets for others, and the topology changes as nodes move. Uses include battlefield communication, disaster relief and vehicle-to-vehicle networks (VANETs).'Mobile Area Network', 'Managed Access Network' and 'Multiple Access Node' are not what the acronym stands for; the key word is ad hoc, meaning set up on the spot without planning.

Q: Which IEEE standard is used for Wi-Fi ?

Wi-Fi is based on IEEE 802.11.IEEE 802.11 is the family of standards for wireless local area networks: 802.11b, g, n, ac and ax (Wi-Fi 6), among others. 'Wi-Fi' is the Wi-Fi Alliance's brand for devices certified under it.IEEE 802.3 is wired Ethernet. IEEE 802.16 is WiMAX, broadband wireless over metropolitan distances. IEEE 802.20 is Mobile Broadband Wireless Access, a standard for mobile data that saw little use.

Q: Which of the following is NOT a type of wireless network ?

The one that is not wireless is Ethernet.Ethernet is the standard for wired local area networks, carrying data over twisted-pair or fibre-optic cables.Wi-Fi (wireless LAN), Bluetooth (short-range personal area networking) and NFC (near-field communication over a few centimetres) are all wireless technologies.Ethernet cables are graded by category, such as Cat5e and Cat6, according to the speeds they support.

Q: For the transmission of the signal, Bluetooth wireless technology uses

Bluetooth uses time division duplex.A Bluetooth link alternates between the master and the slave in successive time slots, so the two directions share one frequency hop at a time. This is time division duplex (TDD), and it is combined with frequency hopping spread spectrum. Time division multiplexing (A) and frequency division multiplexing (B) share a channel among several signals, and frequency division duplex (D) would use separate frequencies for each direction, which Bluetooth does not do.

Q: What is the frequency range of the IEEE 802.11a standard?

Correct answer: 5GHz802.11a operates in the 5 GHz U-NII bands. Note that two of the options are given in Gbps - a data rate, not a frequency - so they can be eliminated on units alone before any knowledge of the standard is applied. The move to 5 GHz is what gives 802.11a its twelve non-overlapping channels and its shorter range, since higher frequencies attenuate faster.

Q: What is the maximum distance running the lowest data rate for 802.11b?

Correct answer: About 350 feetAt its lowest rate of 1 Mbps, 802.11b reaches about 350 feet. Range and rate trade against each other continuously: as a client moves away the signal weakens, the radio falls back to a more robust modulation, and the throughput drops. The 150 feet quoted elsewhere in this topic is the distance at the full 11 Mbps.

Q: What is the maximum distance with maximum data rate for 802.11a?

Correct answer: About 65-75 feet802.11a reaches only about 65 to 75 feet at its full 54 Mbps. It is the shortest range of the three standards here, because 5 GHz signals attenuate more rapidly in air and are absorbed more readily by walls and furnishings than 2.4 GHz. That is the price paid for the extra channels and the quieter band.

Q: What is the frequency range of the IEEE 802.11b standard?

Correct answer: 2.4GHz802.11b uses the 2.4 GHz ISM band, which it shares with 802.11g, Bluetooth, cordless telephones and microwave ovens - the source of most of the interference that band suffers. As with the 802.11a item, the two options quoted in Gbps are rates rather than frequencies and can be discarded on units.

Q: You have a Cisco mesh network. What protocol allows multiple APs to connect with many redundant connections between nodes?

Correct answer: AWPPThe Adaptive Wireless Path Protocol is Cisco’s proprietary mesh routing protocol. Each mesh access point uses it to discover its neighbours and choose the best path back to the rooted access point, taking signal quality and the number of hops into account, and to reroute automatically when a link degrades. LWAPP is the protocol between a lightweight access point and its controller, and STP is a wired Layer 2 protocol.

11.

MANET stands for

A.Mobile Area Network
B.Managed Access Network
C.Mobile Ad-Hoc Network
D.Multiple Access Node

Exam Year(s)

Tripura Public Service Commission - 2026,

Answer: C

MANET stands for Mobile Ad-Hoc Network.

A MANET is a self-configuring network of mobile devices connected wirelessly without any fixed infrastructure such as routers or access points. Every node also acts as a router, forwarding packets for others, and the topology changes as nodes move. Uses include battlefield communication, disaster relief and vehicle-to-vehicle networks (VANETs).

'Mobile Area Network', 'Managed Access Network' and 'Multiple Access Node' are not what the acronym stands for; the key word is ad hoc, meaning set up on the spot without planning.

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12.

Which IEEE standard is used for Wi-Fi ?

A.IEEE 802.11
B.IEEE 802.20
C.IEEE 802.3
D.IEEE 802.16

Exam Year(s)

Tripura Public Service Commission - 2026,

Answer: A

Wi-Fi is based on IEEE 802.11.

IEEE 802.11 is the family of standards for wireless local area networks: 802.11b, g, n, ac and ax (Wi-Fi 6), among others. 'Wi-Fi' is the Wi-Fi Alliance's brand for devices certified under it.

IEEE 802.3 is wired Ethernet. IEEE 802.16 is WiMAX, broadband wireless over metropolitan distances. IEEE 802.20 is Mobile Broadband Wireless Access, a standard for mobile data that saw little use.

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13.

Which of the following is NOT a type of wireless network ?

A.Wi-Fi
B.Bluetooth
C.NFC
D.Ethernet

Exam Year(s)

Tripura Public Service Commission - 2025,

Answer: D

The one that is not wireless is Ethernet.

Ethernet is the standard for wired local area networks, carrying data over twisted-pair or fibre-optic cables.

Wi-Fi (wireless LAN), Bluetooth (short-range personal area networking) and NFC (near-field communication over a few centimetres) are all wireless technologies.

Ethernet cables are graded by category, such as Cat5e and Cat6, according to the speeds they support.

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14.

For the transmission of the signal, Bluetooth wireless technology uses

A.time division multiplexing
B.frequency division multiplexing
C.time division duplex
D.frequency division duplex

Exam Year(s)

UGC NET - 2012,

Answer: C

Bluetooth uses time division duplex.

A Bluetooth link alternates between the master and the slave in successive time slots, so the two directions share one frequency hop at a time. This is time division duplex (TDD), and it is combined with frequency hopping spread spectrum. Time division multiplexing (A) and frequency division multiplexing (B) share a channel among several signals, and frequency division duplex (D) would use separate frequencies for each direction, which Bluetooth does not do.

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15.

Match the following :

List - I	List - II
a. Wireless Application Environment	i. HTTP
b. Wireless Transaction Protocol	ii. IP
c. Wireless Datagram Protocol	iii. Scripts
d. Wireless	iv. UDP

Codes : a b c d

A.a-ii, b-iv, c-i, d-iii
B.a-iv, b-iii, c-ii, d-i
C.a-iv, b-iii, c-i, d-ii
D.a-iii, b-i, c-iv, d-ii

Exam Year(s)

UGC NET - 2013,

Answer: D

In the WAP stack, the Wireless Application Environment (WAE) uses scripts, so a matches iii. The Wireless Transaction Protocol (WTP) works as a request-reply protocol in the manner of HTTP, so b matches i. The Wireless Datagram Protocol (WDP) is the datagram layer equivalent to UDP, so c matches iv. The remaining match, d with ii (IP), is as in the key, although the item d is printed only as 'Wireless' in this booklet.

That gives a-iii, b-i, c-iv and d-ii, the last option. The other options pair WAE with IP or UDP, and WDP with IP or HTTP, which do not suit the layers.

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16.

What is the frequency range of the IEEE 802.11a standard?

A.2.4Gbps
B.5Gbps
C.2.4GHz
D.5GHz

Answer: D

Correct answer: 5GHz

802.11a operates in the 5 GHz U-NII bands. Note that two of the options are given in Gbps - a data rate, not a frequency - so they can be eliminated on units alone before any knowledge of the standard is applied. The move to 5 GHz is what gives 802.11a its twelve non-overlapping channels and its shorter range, since higher frequencies attenuate faster.

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17.

What is the maximum distance running the lowest data rate for 802.11b?

A.About 100 feet
B.About 175 feet
C.About 300 feet
D.About 350 feet

Answer: D

Correct answer: About 350 feet

At its lowest rate of 1 Mbps, 802.11b reaches about 350 feet. Range and rate trade against each other continuously: as a client moves away the signal weakens, the radio falls back to a more robust modulation, and the throughput drops. The 150 feet quoted elsewhere in this topic is the distance at the full 11 Mbps.

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18.

What is the maximum distance with maximum data rate for 802.11a?

A.About 65-75 feet
B.About 90-100 feet
C.About 150 feet
D.Over 200 feet

Answer: A

Correct answer: About 65-75 feet

802.11a reaches only about 65 to 75 feet at its full 54 Mbps. It is the shortest range of the three standards here, because 5 GHz signals attenuate more rapidly in air and are absorbed more readily by walls and furnishings than 2.4 GHz. That is the price paid for the extra channels and the quieter band.

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19.

What is the frequency range of the IEEE 802.11b standard?

A.2.4Gbps
B.5Gbps
C.2.4GHz
D.5GHz

Answer: C

Correct answer: 2.4GHz

802.11b uses the 2.4 GHz ISM band, which it shares with 802.11g, Bluetooth, cordless telephones and microwave ovens - the source of most of the interference that band suffers. As with the 802.11a item, the two options quoted in Gbps are rates rather than frequencies and can be discarded on units.

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20.

You have a Cisco mesh network. What protocol allows multiple APs to connect with many redundant connections between nodes?

A.LWAPP
B.AWPP
C.STP
D.IEEE

Answer: B

Correct answer: AWPP

The Adaptive Wireless Path Protocol is Cisco’s proprietary mesh routing protocol. Each mesh access point uses it to discover its neighbours and choose the best path back to the rooted access point, taking signal quality and the number of hops into account, and to reroute automatically when a link degrades. LWAPP is the protocol between a lightweight access point and its controller, and STP is a wired Layer 2 protocol.

Discuss in Forum

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