CB84000D001C001C is the content of a UDP header in hexadecimal format. The…
2025
CB84000D001C001C is the content of a UDP header in hexadecimal format. The source port number is
- A.
52100
- B.
13
- C.
28
- D.
52000
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Correct answer: A
Answer: 52100
Explanation: The UDP header consists of four 2-byte fields in order: source port, destination port, length, checksum. The provided header bytes (hex) are: CB84 000D 001C 001C.
Step 1: Extract the first two bytes for the source port: "CB84".
Step 2: Convert hex CB84 to decimal by splitting into bytes: CB hex = 203, 84 hex = 132.
Step 3: Compute 203 * 256 + 132 = 52100. Therefore the source port is 52100.
Note: The remaining fields are destination port = 000D (13) and length = 001C (28).
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