![[10 pts.] Consider the special UDP segment shown below. a. Find the decimal values of the source and destination port numbers](http://img.homeworklib.com/questions/f2ae92f0-efc5-11eb-9e87-bb3ac404a4ef.png?x-oss-process=image/resize,w_560)
Homework Answers
a. Here the source port is given as 1100 0000 0000 0000 it's
decimal equivalent is 49152
Destination port is given as 0000 0000 0011 0100, it's decimal
equivalent is 52.
Therefore SOURCE port number is 49152 and
DESTINATION port number is 52.
b. Error exists in this segment
Explanation: Let us say that this segment is received at
receiver.
By adding all the 16 bits fields (source port, destination port,
Length and Check sum), if the result is 1111 1111 1111 1111, then
the segment is error free.
Let us add the 16 bit fields here
1100 0000 0000 0000 (Source port)+
0000 0000 0011 0100 (Destination port)
---------------------
1100 0000 0011 0100 +
0000 0000 0000 1010 (Length)
---------------------
1100 0000 0011 1110 +
0011 1111 1001 1111 (Check sum)
--------------------
1111 1111 1101 1101 (Error exists in this Segment)
If the final result is 1111 1111 1111 1111, then it is error free segment.
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