CBFS Data Communication and Computer Network Discussion Questions all the requirements in the pdf file 2000 word Less than 5 % simalirty. turnitin report n

CBFS Data Communication and Computer Network Discussion Questions all the requirements in the pdf file 2000 word Less than 5 % simalirty. turnitin report nee Ministry of Higher Education
Sohar College of Applied Sciences
Information Technology Department
A.Y 2019-20 Spring Semester 2020
Assignment # 1
ITDR2107 Data Communication & Computer Networks
Issue Date: 23 April 2020
Student Name:
Student ID:
Group No.50
Max. Marks: 30
Instructions:
1. Assignment 1 is for 30 marks and worth 30 % of final marks for ITDR2107 Course.
2. Answer all the questions.
3. Answer should be handwritten using blue or black pen only. Diagram or figures can be
drawn using pencil.
4. Follow the plagiarism policy as per the academic regulation.
5. Upload the Assignment 1 and try to upload once it is completed at the earliest.
i.
Complete the following questions ( 10 Marks)
1. What is the maximum number of characters or symbols that can be represented by
ASCII code?
Answer:_______________________________________________.
2. If you are in college and accessing the internet from the canteen using your laptop
connected to college network. Which network criteria is most suitable for this
scenario & Why?
Answer:_______________________________________________
3. Faulty switch is an example of which OSI layer problems?
Answer:________________________________________________
4. The translation of a data format between two systems one is using ASCII code and
the other is using Unicode code is part of the functions of which layer in TCP/IP
model?
Answer:_________________________________________
5. What is the phase change in degrees of the signal in the following figure?
Answer:_________________________________________
6. Which signal has a wider bandwidth, a sine wave with a frequency of 200 Hz or a
sine wave with a frequency of 400 Hz?
Answer:_____________________________________________
7. List four line coding techniques of digital-to-digital conversion.
Answer:_________________________________________________
8. Draw the graph for a bipolar encoding for the bit stream 11001101.
Answer:
9. 200 channels, each with a 50KHz bandwidth, are to be multiplexed together.
What is the minimum bandwidth of the link if there is a need for a guard band of
10 Hz between the channels?
Answer:___________________________________________
10. In asynchronous TDM, what is the number of slots in a frame if the number of
input devices is 20?
Answer:_________________________________________
II. Answer the following questions in brief ( 12 Marks)
1. Performance is inversely related to delay. When you use the Internet, which of the
following application are more sensitive to delay? Justify your answer.
a. Sending an e-mail
b. downloading a file
c. video call
Answer:
2. You want to transfer a document from one computer to another, and you want the
document to be encrypted. The destination computer is on same network, the
network technology used in the network is Ethernet. Which layers of the OSI
reference model is involved in this scenario.
Answer:
3. Explain how the asynchronous TDM solve the problem of empty slots in
synchronous TDM.
Answer:
4. How the flow control is achieved?
Answer:
5. Differentiate between Frequency division multiplexing and time division multiplexing
with diagrams.
Answer:
6. Compare and contrast PCM and DM.
Answer:
III Answer the following questions in detail (8 Marks)
1 a. What is the difference between peak amplitude and absolute amplitude?
b. How to increase signal strength for the purpose of decrease attenuation?
2. Draw the graph of the NRZ-L & NRZ-I scheme using each of the following data
streams,
a. 10110110
b. 01100100

Purchase answer to see full
attachment