Important Practice Question Available for Exam. This Questions are based on Repeated Topics and Frequently Ones with the Help of this you can Score Good Marks in Exam and you will Pass in Exam.
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1. Attempt any FIVE : 10
(a) Define Protocol. Why it is needed ? *
(b) List types of Wireless Media. *
(c) Define the term Communication medium. *
(d) Define Multiplexing. List its types. ***
(e) Define (i) FHSS, (ii) DSSS. **
(f) Draw OSI model.
(g) List features of 4G and Volte.
(h) List any four functions of Data link
layer.
(i) Enlist various IEEE standards for wireless
communication. (any four)
(j) Define line of sight propagation. *
2. Attempt any THREE : 12
(a) Compare analog signal and digital signal.
(any four points)
(b) Explain half duplex system and full duplex
system with diagram.
(c) Explain satellite communication with
diagram. **
(d) Explain working of Packet and circuit
switching. *****
(e) Explain the process of FSK modulation with
diagram. *
(f) Explain any four standard organizations. **
(g) Compare amplitude modulation and frequency
modulation (4 points).
(h)
Explain process of phase shift keying. *
3. Attempt any THREE : 12
(a) Calculate the baud rate for the given bit
rate and type of modulation : *
(i)
4000 bps, FSK
(ii)
6000 bps, ASK
(b) Draw and explain Coaxial, Fiber Optic
cable & All Types of Cable. ****
(c) Draw and explain WDM.
(d) Explain the process of Cyclic Redundancy
Check (CRC) with suitable example. **
(c) Five channels each with 200 kHz bandwidth
are multiplexed using FDM. Find minimum bandwidth of the link if guard band of
10 kHz is used.
(d) Assuming odd parity, find the parity bit
for each of the following data unit : *
(i)
1011010 (ii) 0010110
(iii)
1001111 (iv) 1100000
(e) Draw a BFSK waveform to represent the
following bit stream 0 1 1 0 1 0
4. Attempt any THREE : 12
(a) Draw and explain PSK with waveforms.
(b) Draw and explain fiber optic cable.
(c) Calculate minimum number of bits in a PN
sequence if we use FHSS with a channel bandwidth of B = 5KHz and BSS = 120 KHz.
(d) Explain selective reject ARQ.
(e) Draw Bluetooth architecture. Explain function
of various layers.
(f) A signal carries five bits in each signal
element. If 1600 signal elements are sent per second, find the baud rate and
bit rate in kbps. *
(g) Explain the reason for using different
frequency bands for uplink and downlink in satellite communication. *
(h) Explain the process of asynchronous TDM
with example. *
(i) Explain the process of Checksum with
example.
(j) In bluetooth communication calculate the
length of frame for following scenarios :
(i)
Three slot
(ii)
Five slot. Assume data rate = 1 mbps
(k) Explain the concept of pico net and
scatter net of Bluetooth.
5. Attempt any TWO : 12
(a) Differentiate coaxial, twisted pair and
fiber optic cables. (any six points) *
(b) Explain LRC and VRC for error detection
with suitable example.
(c) Explain WLAN with diagram. Also state its
advantages and disadvantages.
(d) Explain Microwave transmission with its
advantages and disadvantages.
(e) Draw and explain Mobile Telephone System
Architecture. *
(f) Compare first, second, third and fourth
generation mobile telephone systems (any 3 points). *
6. Attempt any TWO : 12
(a) Two channels one with a bit rate of 150
kbps and another with a bit rate of 140 kbps are to be multiplexed using pulse
stuffing TDM with no synchronization bits. Answer the following questions. *
(i)
What is the size of a frame in bits ?
(ii)
What is the frame rate ?
(iii)
What is the duration of frame ?
(b) Explain stop and wait ARQ with example. **
(c) In a digital medium with a data rate of 12
mbps. How many 64 kbps voice channels can be carried if DSSS is used with
Barker sequence ?
(d) Explain process of synchronous time
division multiplexing with its advantages.
(e) Explain the following multiplexing
techniques with block diagram :
i)
TDM
ii)
FDM
(f) Explain the layered architecture of
ISO-OSI model along with functions of each layer.
NOTE: This is Not Official MSBTE Website: We Provide Important Practice Questions for Students to Score Good Marks in Exam and this Questions is based on Important Topics of Syllabus and Repeated Ones. So, with the help of this we help student to Not get KT / or / They will Not get Fail in Exam.