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Question:
(a) Explain the usage of the following parts of the IPv4 datagram format.
i. VERS ii. HLEN iii. TOTAL LENGTH iv. SERVICE TYPE v. HEADER CHECKSUM
(b) Name the fields present in IPv4 no longer present in IPv6. Why are these fields no longer required?
(c) The deployment of IPv6 has been slow to date. Why has it been slow? What is needed to accelerate its deployment?
(d) Consider sending a 5000-byte datagram into a link that has a MTU of 1500 bytes. Suppose the original datagram is stamped with the identification number 256. How many fragments are generated? What are their characteristics?
(e) A client requesting an IPv4 address will broadcast messages on the physical subnet to discover available DHCP servers. Will the client send a TCP or UDP packet? To which destination IP address will this packet be addressed?
Token Bus Sublayer Protocol Send for some time then pass token If no data after that pass token right away Traffic classes 0, 2, 4 and 6 (highest) Internal s
Destination unreachable Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
whats is ip address
Define Retransmission? Retransmission is a process in which the receiver detects the occurrence of an error and asks the sender to resend the message. Resending is repeated unt
Describe the main factors of switching delay No. The speed of propagation is 200,000 km/sec or 200 meters/µsec. In 10 µsec signal travels 2 km. Therefore, each switch adds equi
Priority and Reservation Higher priority stations may possibly access the token sooner Each station has a priority code Since token passes by station waiting to t
Can you describe Application layer in OSI model?
Unused Reserved This is a 6 bite field reserved for future use.
PPTP use for encryption and authentication
Store-and-forward switch The layer 2 switch accepts a frame on an input line, buffers it briefly, and then routes it to the appropriate output line. Cut-through switch
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