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Part I Linux Utilities: (Answer should not exceed 3 lines) 

  • What is the purpose of ping utility? Also describe its functionality with two different options?
  • Try pinging two different sites and give summary of results in each case?
  • What is difference between the ping and traceroute?
  • What is the purpose of ifup and ifdown?
  • What is the purpose of tcpdump? Store its results in .txt file and send file in mail?

Part II Network Architecture: 

Q No 1: Assuming a framing protocol that uses bit stuffing, show the bit sequence transmitted
over the link when the frame contains the following bit sequence:
110101111101011111101011111110
Mark the stuffed bits.

Q No 2: Show the 4B/5B encoding, and the resulting NRZI signal, for the following
 bit sequence:

1110 0101 0000 0011

Part III Research Papers:

What is the difference between Asynchronous ConnectionLess links (ACL), and Synchronous Connection-Oriented links (SCO). Make a detailed table for the differences.
BLUETOOTH AND WI-FI WIRELESS PROTOCOLS: A SURVEY AND A COMPARISON

Answer the following questions. 
Q No 3: What is the difference between Asynchronous ConnectionLess links (ACL), and Synchronous Connection-Oriented links (SCO). Make a detailed table for the differences.

Q No 4:Write down the basic differences among IEEE 802.11a/b/g/n. Make a detailed table for the differences.

Q No 5:  Write down the differences between Distributed Coordination Function (DCF) and a Point Coordination Function (PCF)? Make a detailed table for the differences. 8 Marks

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