Welcome To Blog of Hashmi S A, Department of IT, MGM's College of Engineering, Nanded, MS, India

Friday, April 13, 2018

Class: TE (IT) Subject: CN Academic Year 2017-18 Semester II Assignment II

MGM's College of Engineering, Nanded

Department of IT

Academic Year 2017-18 Semester II

Assignment II

Class: TE (IT) Subject: CN

1. Discuss Subnetting and Supernetting with example.

2. What are different types of ICMP Messages? An ICMP message has arrived with the header (in hexadecimal):

03 0310 20 00 00 00 00

What is the type of the message? What is the code? What is the purpose of the message?

3. Compare (i) TCP with IP (ii) TCP with UDP.

4. What are properties of transport layer services? Explain in brief.

5. Draw and explain the fields of TCP segment format. What is the maximum size of the TCP header? What is the minimum size of the TCP header?

6. What are the different control fields in TCP segment? What can you say about the TCP segment in which the value of the control field is one of the following:

a. 000000

b. 000001

c. 010001

d. 000100

e. 000010

f. 010010

7. What are the different options in TCP segment? If the value of HLEN is 0111, how many bytes of option are included in the segment?

8. The following is a dump of a TCP header in hexadecimal format.

(05320017 00000001 00000000 500207FF 00000000)

a. What is the source port number?

b. What is the destination port number?

c. What the sequence number?

d. What is the acknowledgment number?

e. What is the length of the header?

9. What is Silly Window Syndrome? How it is solved in TCP?
10. Draw and explain the format of UDP packet. The following is a dump of a UDP header
in hexadecimal format.

CB84000D001C001C

a. What is the source port number?
b. What is the destination port number?
c. What is the total length of the user datagram?
d. What is the length of the data?

11. Define autonomous system. Which protocol is used for communication between
autonomous systems?

12. Contrast and compare distance vector routing with link state routing.
13. Draw and explain the fields of RIP message format.
14. Draw and explain the fields OSPF message format.
15. Change the multicast IP address 238.212.24.9 to an Ethernet multicast address.
16. Write short notes on : (a) IGMP (b) DHCP


Faculty Incharge: Hashmi S A

Saturday, February 24, 2018

2017-18 Sem II Class: TE(IT) Subject: C N Assignment I

MGM’s College of Engineering, Nanded.
Department of IT
Semester II (2017-18)
Class: TE(IT) Subject: C N Assignment I

1. Draw and explain layers of TCP/IP model.

2. Draw the architecture of Internet. Explain its components.

3. Calculate the time required to download a 2MB file on an internet having speed of 10Mbps.

4. Explain classful addressing in TCP/IP.

5. Change the following IPv4 addresses from binary to hexadecimal and decimal notation.

i)10001001 00001001 00001011 11101011

ii)11001001 10010011 00011011 11111011

6. Change the following IP addresses from dotted-decimal notation to binary and hex notation.

(i) 110.56.45.80 (ii) 210.215.211.198 (iii) 71.165.101.12

7. For the following addresses, find the class, the block and the range of addresses:

(i) 11.1.1.1 (ii) 145.56.1.1 (iii) 216.120.74.1

8. Find the error, if any, in the following IP addresses:

(i) 115.075.79.85 (ii) 275.91.79.15 (iii) 260.074.155.261

9. (a) Find the class of the following IP addresses, and give explanation for it:

(i) 11000011 10000011 00011011 11111111

(ii) 00101001 00001011 00001011 11101111

(iii) 10010001 00101011 00001011 11101111

(b) One of the address in a block is 201.12.8.45.Find the number of addresses, the first address and the last address.

10. Draw and explain the header of ARP/RARP protocol. A host with IP address 155.25.42.20 and physical address 0xb2efc577f42c has a packet to send to another host with 155.25.42.29 and physical address 0xe456173f227c. The two hosts are on the same Ethernet. Write the contents of ARP request and reply packets.

11. Draw and explain the fields of an IP datagram. An IP packet has arrived with the first 8 bits as shown:

ç 11100010

The receiver discards the packet. Why?

12. What are the different options for IP datagram option field? Explain briefly. An IP packet has the value of HLEN as 1101 in binary. How many bytes of options are being carried by this packet?

13. (a) In an IP packet, the value of HLEN is 5 (decimal) and the value of the total length field is 45 (decimal). How many bytes of data are being carried by this packet?

(b) In an IP packet, the value of HLEN is 0A (hex) and the value of the total length field is 0A2F (hex). How many bytes of data are being carried by this packet?

14. Calculate the checksum for the following IP datagram

4	5	0	56
2A			0	0
6	8		0
192.169.11.2
195.169.11.9

15. An IP packet has arrived with the hexadecimal digits as shown below:

ç 450000380d3a00000201bb6ec0a802034a7de2f4

How many hops can this packet travel before being dropped, The data belong to what upper layer protocol, What is identification value, what is the value for checksum, what is source and destination address?

16. What is the significance of identification, flags, and offset fields of IP datagram? A datagram of size 11520 bytes is transmitted on a network of MTU 960 bytes. Calculate the offset values and range of data bytes present in each fragments. What is the status of flags bit in each fragment?

Additional Questions for practice

17. Enlist and explain the properties of internet.

18. What services are provided by network-level of internet? Discuss in detail.

19. Explain in detail application-level services of internet.

20. Draw and explain different fields of Ethernet frame.

21. Compare connection-oriented and connectionless delivery systems.

22. Enlist the advantages and drawbacks of packet-switching networks.

23. What are the advantages of circuit-switching networks over packet-switching? Why?

24. What connecting devices are used at layer-1, layer-2, and layer-3 in internet? Explain their characteristics and functions.

25. What addresses are used at layer-1, layer-2, and layer-3 in internet? Explain briefly.

26. Explain the application programs at your site that use TCP/IP.

27. What is Ethernet address? What are its properties?

28. What is an IP address? What are the desirable properties of IP address? What is signified by prefix and suffix of IP address?

29. What are the differences between Ethernet address and IP address?

30. Draw and explain ARP and RARP protocol format.

31. Explain the concept of (i) datagram encapsulation, (ii) network MTU, (iii) and multiplexing at IP and TCP layers.

32. What is proxy ARP? Explain with example.

33. What is ARP? Explain ARP cache timeout.

34. Define : (i) Multihomed host (ii) Directed broadcast address (iii) Limited broadcast address (iv) Loopback address.

Faculty Incharge: Hashmi S A

2017-18 Sem II Class: BE(IT) Subject: MC Assignment I

MGM’s College of Engineering, Nanded.
Department of IT
Semester II (2017-18)
Class: BE(IT) Subject: MC Assignment I
________________________________________________________

1. What different multiplexing techniques are used in wireless communication? Explain in brief.

2. What are the different spread spectrum techniques in wireless networks? Explain briefly.

3. Enlist advantages and drawbacks of FDMA and TDMA.

4. Why IR signals are not generally used and radio signals are used for wireless communications such as wifi and cellular networks?

5. Give comparison between 802.3 and 802.11.

6. What is hidden terminal problem? How it is solved?

7. Enlist characteristics of wireless LANs.

8. Draw and explain the two types of architectures used in 802.11 networks.

9. What are the different layers of 802.11 protocol? Explain their functions.

10. A smartphone downloads an jpeg file of 2MB using FHSS physical interface of wifi having 2Mbps data rate. Calculate the frame size and time required for downloading. Also list the functions of different fields of FHSS packet format.

11. A laptop uploads mp3 file of 6MB using DSSS physical interface of wifi having 6Mbps data rate. Calculate the frame size and time required for uploading. Also list the functions of different fields of DSSS packet format.

12. Which access method will be used by five mobile stations sharing a single channel for transmission? Explain in detail.

13. What are the different IFS used in 802.11 MAC layer? A mobile station is ready with an ACK packet, how long should it wait before transmission using FHSS and DSSS?

14. What are the different fields present in 802.11 MAC frame format? A smartphone receives a MAC packet on wifi network with the following bits in MAC frame:

0001110000000111

What information is present in this MAC packet?

15. What is a beacon frame? A laptop and 2 Smartphone’s are present in wifi infrastructure-based network. How synchronization is done using beacon transmission?

16. What is TIM? How power management is done using DTIM and ATIM in 802.11 networks?

Additional Questions for practice

17. What are the drawbacks of mobile and wireless communication? Explain.

18. Give comparison between wireless networks and fixed networks.

19. Calculate the 802.11 MAC frame size for Q. No. 10 and 11.

20. What additional functions are required for wireless MAC protocol? Why?

21. Draw and explain IEEE 802.11 FHSS frame format.

22. Draw and explain IEEE 802.11 DSSS frame format.

23. What are the design goals of wireless LAN? Why?

24.What are the different digital modulation techniques? Discuss in brief

25.What are the three access methods used by 802.11 standard? Explain in detail.

26.Give comparison between infrared and radio transmission.

27. What are the applications of mobile and wireless communication? Explain in detail.

28.Enlist and explain the components of infrastructure networks of 802.11.

29.State and explain the 3 versions of 802.11 physical layers.

30.What functions are performed by MAC management of 802.11? Discuss in detail.

31.How power management is done in 802.11 infrastructure and ad-hoc networks?

32.Write short note on: (i)Wifi Dual Band (ii) Wifi Direct

Faculty Incharge: Hashmi S A

Friday, October 6, 2017

Class: BE(IT)-CGPA Subject: DMDW Assignment II

MGM’s College of Engineering, Nanded.
Department of IT
Semester I (2017-18)
Class: BE(IT) Subject: DMDW Assignment II

1. Suppose we have the following values for salary (in thousands of dollars), shown in increasing order: 30, 36, 47, 50, 52, 52, 56, 60, 63, 70, 70, 110. (a) Calculate mean, median, mode, midrange, standard deviation of the salary. (b) Can you find (roughly) the first quartile (Q1) and the third quartile (Q3) of the data?

2. For the above values for salary (a) Give the five-number summary of the data. (b) Show a boxplot of the data.

3. Given two objects represented by the tuples (22, 1, 42, 10) and (20, 0, 36, 8):

(a) Compute the Euclidean distance between the two objects.

(b) Compute the Manhattan distance between the two objects.

4. Explain min-max and z-score normalization with an example.

5. Imagine that you need to analyze AllElectronics sales and customer data. You note that many tuples have no recorded value for several attributes such as customer income. How can you go about filling in the missing values for this attribute?

6. Price (in dollars) for a product are: 8, 4, 21, 15, 21, 24, 34, 25, 28. Apply binning methods for smoothing the Price data.

7. Write an overview of data transformation strategies.

8. Discuss issues to consider during data integration.

9. A database has five transactions. Let min_ sup= 60% and min_ conf= 80%.

TID Items Bought

T100 M, O, N, K, E, Y

T200 D, O, N, K, E, Y

T300 M, A, K, E

T400 M, U, C, K, Y

T500 C, O, O, K, I, E

Find all frequent itemsets using Apriori.

10. Define : (i) Support (ii) Confidence (iii) Frequent Itemset

11. State and explain the steps of apriori algorithm.

12. For the following transaction database, Generate Association rules from frequent itemset.(take support=2)

TID List of item IDs

T100 I1, I2, I5

T200 I2, I4

T300 I2, I3

T400 I1, I2, I4

T500 I1, I3

T600 I2, I3

T700 I1, I3

T800 I1, I2, I3, I5

T900 I1, I2, I3

13. How can we improve the efficiency of Apriori-based mining?

14. Create an FP-tree for the above transaction database (Q.12).

15. What is classification? Enlist applications of classification.

16. Write short note on: Pattern evaluation methods.

Faculty Incharge: Hashmi S A