Get fully solved assignment. Buy online from website
online store
or
plz drop a mail with your sub code
we will revert you within 2-3 hour or immediate
Charges rs
125/subject and rs 625/semester only.
if urgent then call us
on 08791490301, 08273413412
PROGRAM
BCA(REVISED FALL
2012)
SEMESTER - 3
SUBJECT CODE &
NAME
BCA 3040 – DATA
COMMUNICATION
BK ID - B1644
CREDITS - 4
MAXIMUM MARKS – 60
Q1. What is
modulation? Explain why modulation is required? 10
Answer:
Modulation: Modulation is the process of varying one of characteristics
(either amplitude or frequency or phase) of a high-frequency
periodic waveform, called the carrier signal, with a modulating
signal which typically contains information to be transmitted.
If we look at a general function for a sinusoid:
Q2. Write short note on:
1. Ground Wave Propagation
2. Sky Wave Propagation
Answer:
Q3.
Briefly explain Nyquist theorem with mathematical representation. 10
Answer:
Nyquist theorem: The Nyquist theorem states that “a
signal must be sampled at least twice as fast as the bandwidth of
the signal to accurately reconstruct the waveform” In other words,
the sampling frequency should be at least twice the highest frequency
contained in the signal. It is mathematically represented
Q4 What is Time-division multiplexing
(TDM)? Explain. 10
Answer:
Q5. Write short note on:
1. Least-Cost Algorithms
2. Dijkstra’s Algorithm
Answer:
Q6. Explain in brief any five
benefits of wireless LANs (WLANs).
Answer:
Get fully solved assignment. Buy online from website
online store
or
plz drop a mail with your sub code
we will revert you within 2-3 hour or immediate
Charges rs
125/subject and rs 625/semester only.
if urgent then call us
on 08791490301, 08273413412
No comments:
Post a Comment