Questions
Syllabus
Qns. By Syllabus

Semester

Subject

Year

Tribhuwan University

Institute of Science and Technology

2081

Bachelor Level / Third Year / Sixth Semester / Science

Bachelors in Information Technology (BIT357)

(Wireless Networking)

Full Marks: 60

Pass Marks: 24

Time: 3 Hours

Candidates are required to give their answers in their own words as for as practicable.

The figures in the margin indicate full marks.

Section A

Long Answers Questions

Attempt any TWO questions.
[2*10=20]
1.
Explain the Rician Fading model in digital communication systems, and its relationship to Rayleigh fading.[10]
2.
What is power spectral and power spectral density? Discuss the working of QAM and OFDM techniques with example.[10]
3.
Differentiate between spread Spectrum Multiple Access and code Division Multiple Access. Illustrate on the standards for wireless Local Area Networks.[10]
Section B

Short Answers Questions

Attempt any Eight questions.
[8*5=40]
4.
How small scale fading differs from large scale fading? Explain fading due to multipath time delay spread. [5]
5.
Discuss tools and techniques used in 4G and 5G cellular systems. [5]
6.
What is modulation? Discuss the concepts of Amplitude Modulation, Frequency Modulation and Phase Modulation with example. [5]
7.
Why diversity is employed in wireless communication? Discuss the concepts of maximum Ratio and Equal Gain Diversity. [5]
8.
What is handoff management? Discuss various handoff types. [5]
9.
What is PCS network? How location is managed in PCS networks? Explain. [5]
10.
What is internetworking? Discuss various internet working devices used in wireless networks. [5]
11.
What is MANET? How mobility is handled in IPv6? Explain. [5]
12.
Write short notes a) WAP b) DPSK [5]