2015-16 Sem II Class: BE(IT) Subject: MC Assignment II

MGM’s College of Engineering, Nanded.
Department of IT
Semester II (2015-16)
Class: BE(IT)       Subject: MC         Assignment II
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1. What are the inter-frame spaces in 802.11? How much time does a 802.11 mobile node have to wait to send CTS signal, and why?
2. Discuss DFWMAC-DCF using CSMA/CA for wi-fi MAC layer.
3. How the hidden terminal problem is solved in IEEE 802.11?
4. Draw and explain IEEE 802.11 MAC packet structure. A receiver receives the following first 10 bits in a packet:

           0001101101

What are the contents of this packet?

5. What are the functions of 802.11 MAC management layer?
6. Compare the power management in 802.11 infrastructure and ad-hoc networks.
7. Which physical interface is used in Bluetooth headset? Why?
8. Draw and explain Bluetooth protocol stack.
9. Define (i) Piconet (ii) Scatternet (iii) LMP and L2CAP.
10. What are the fields of Bluetooth packet header? If an acknowledgement of packet is required, then which fields are set?
11. Draw and enlist major baseband states of a Bluetooth device.
12. What are the major components of GSM architecture? Draw and explain.
13. Why AUC, EIR and OMC are present in OSS of GSM.
14. An app is designed for sharing data between two mobile phones using bluetooth, which physical interface of Bluetooth will be used and why?
15. What are the functional differences between BTS and BSC?
16. What are the components of a GSM mobile station? Which component hides radio details in mobile station?

Faculty Incharge: Hashmi S. A.

2015-16 Subject: A C N Assignment II Class: TE(IT)

MGM’s College of Engineering, Nanded.
Department of IT
Semester II (2015-16)
Class: TE(IT)       Subject: A C N       Assignment II

1.      Draw and explain ARP and RARP protocol format.

2.      Draw and explain the header format of IPv4.

3.      Explain classful addressing in TCP/IP.

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

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

i)10000001  00001011  00001011  11101111

ii)11000001  10000011  00011011  11111111

6.      What is proxy ARP? Explain with example.

7.      What is ARP? Exaplain ARP cache timeout.

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

(i)                 10.1.1.1     (ii) 147.55.1.1  (iii) 215.121.74.1

9.      Calculate the checksum for the following IP datagram

4	5	0	35
2F			0	0
4	17		0
198.169.11.2
195.167.19.9

10.  Change the following IP addresses from dotted-decimal notation to binary notation.

(i)                 115.57.45.80  (ii)  215.210.211.198  (iii)  71.15.10.12

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

(i)                 110.075.79.85   (ii)  75.91.279.15  (iii)  260.074.155.261

12.  Find the class of the following IP addresses, and give explanation for it:

(i)                 11000001  10000011   00011011 11111111

(ii)               00100001  00001011   00001011 11101111

(iii)             10010001 00001011   00001011 11101111

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

14.  (a) An IP packet has arrived with the first 8 bits as shown:

                                       ç  01100010

     The receiver discards the packet. Why?

(b) In an IP packet, the value of HLEN is 1010 in binary. How many bytes of options are being carried by this packet?

15.  (a) In an IP packet, the value of HLEN is 5 (decimal) and the value of the total length field is 28 (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?

16.  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?

Faculty Incharge: Hashmi S A