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Mcqs

Wireless & Mobile Communications Mcqs

Our 1000+ Wireless & Mobile Communications MCQs (Multiple Choice Questions and Answers) focus on all areas of Wireless & Mobile Communications covering 100+ topics. These topics are chosen from a collection of the most authoritative and best reference books on Wireless & Mobile Communications. One should spend 1 hour daily practicing these MCQs for 2-3 months to learn and assimilate Wireless & Mobile Communications subjects comprehensively. This way of systematic learning will prepare anyone easily for Wireless & Mobile Communications exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

 

Wireless & Mobile Communications Multiple Choice Questions Highlights

  • 1000+ Multiple Choice Questions & Answers (MCQs) in Wireless & Mobile Communications with a detailed explanation of every question.
  • These MCQs cover theoretical concepts, true-false(T/F) statements, fill-in-the-blanks, and match the following style statements.
  • These MCQs also cover numerical as well as diagram-oriented MCQs.
  • These MCQs are organized chapterwise and each Chapter is further organized topicwise.
  • Every MCQ set focuses on a specific topic of a given Chapter in Wireless & Mobile Communications Subject.

 

Who should Practice Wireless & Mobile Communications MCQs?

  • Students who are preparing for college tests and exams such as mid-term tests and semester tests on Wireless & Mobile Communications.
  • Students who are preparing for Online/Offline Tests/Contests in Wireless & Mobile Communications.
  • Students who wish to sharpen their knowledge of Wireless & Mobile Communications Subject.
  • Anyone preparing for Aptitude test in Wireless & Mobile Communications.
  • Anyone preparing for interviews (campus/off-campus interviews, walk-in interviews, and company interviews).
  • Anyone preparing for entrance examinations and other competitive examinations.
  • All - Experienced, Freshers and College / School Students.
Latest Popular
Q:

In MIMO, which factor has the greatest influence on data rates?

A) The size of antenna B) The height of the antenna
C) The number of transmit antennas D) The area of receive antennas
 
Answer & Explanation Answer: C) The number of transmit antennas

Explanation: By increasing the number of receiving and transmitting antennas, it is possible to linearly increase the throughput of the channel with every pair of antennas added to the system.

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Category: Electronics & Electrical MCQs
Sub Category: Wireless & Mobile Communications Mcqs

212
Q:

MIMO stands for _______

A) Many input many output B) Multiple input multiple output
C) Major input minor output D) Minor input minor output
 
Answer & Explanation Answer: B) Multiple input multiple output

Explanation: MIMO stands for Multiple Input and Multiple Output. It refers to the technology where there are multiple antennas at the base station and multiple antennas at the mobile device.

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Category: Electronics & Electrical MCQs
Sub Category: Wireless & Mobile Communications Mcqs

64
Q:

Common data rates of IEEE 802.11 OFDM are ____________

A) 18 Mbps B) 200 Mbps
C) 50 Mbps D) 54 Mbps
 
Answer & Explanation Answer: A) 18 Mbps

Explanation: The IEEE 802.11a standard specifies a modulation that divides a high-speed serial information signal into multiple lower-speed sub signals. Common data rates of IEEE 802.11 OFDM is 18 Mbps.

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Category: Electronics & Electrical MCQs
Sub Category: Wireless & Mobile Communications Mcqs

63
Q:

When we divide band of Orthogonal Frequency Division Multiplexing (OFDM) into sub bands, it diminishes effects of __________

A) noise B) collision
C) interference D) signals absence
 
Answer & Explanation Answer: C) interference

Explanation: OFDM uses the same bandwidth to deliver roughly the same data rate as a single carrier modulation by introducing multiple lower-bandwidth channels. Each of the lower-bandwidth channels has a lower rate, and by combining them together, the original rate is achieved.

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Category: Electronics & Electrical MCQs
Sub Category: Wireless & Mobile Communications Mcqs

111
Q:

OFDM uses complex equalizers.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: ODMA does not use complex equalizers. In OFDM, the equalizer only has to multiply each detected sub-carrier (each Fourier coefficient) in each OFDM symbol by a constant complex number, or a rarely changed value.

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Category: Electronics & Electrical MCQs
Sub Category: Wireless & Mobile Communications Mcqs

56
Q:

OFDM is a technique for 3G mobile communication.

A) True B) False
 
Answer & Explanation Answer: B) False

Explanation: OFDM has developed into a popular scheme for wideband digital communication, used in applications such as digital television and audio broadcasting, DSL internet access, wireless networks, power line networks, and 4G mobile communications.

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Category: Electronics & Electrical MCQs
Sub Category: Wireless & Mobile Communications Mcqs

58
Q:

In OFDMA, what is the relationship between the subcarrier spacing f and symbol time t?

A) f=t B) f=1/2t
C) f=1/t D) no relation
 
Answer & Explanation Answer: C) f=1/t

Explanation: In OFDMA, the relationship between the subcarrier spacing f and symbol time t is f=1/t. They are inversely proportional.

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Category: Electronics & Electrical MCQs
Sub Category: Wireless & Mobile Communications Mcqs

171
Q:

Which property of OFDMA system allows adjacent subcarriers to be used without interference?

A) Orthogonality B) Orthodoxy
C) Octagonality D) Originality
 
Answer & Explanation Answer: A) Orthogonality

Explanation: Orthogonality of sub-carriers simply means their correlation is zero. Orthogonality in OFDMA system allows adjacent subcarriers to be used without interference.

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Category: Electronics & Electrical MCQs
Sub Category: Wireless & Mobile Communications Mcqs

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