What is the standard format of an IP option?

• A. Type, Length, Value
• B. Option Type - Length - Data
• C. Option Type - Length value - Accompanying value
• D. Header - Type - Data

Answer: (C)

IP options are defined by three fields in a fixed order: the option type, the option length, and the option data. The option type is one byte that identifies what the option is. The option length is one byte that tells how many bytes the entire option occupies, including the type and length bytes themselves. The remaining bytes are the data specific to that option. This means the common, standard presentation is Type, Length, then Data. The phrasing that conveys this exact order as a single concept is the best match. The other wording either mixes terms or suggests a different structure, making it less precise for describing how IP options are actually laid out. Remember that some special options (like End of Option List or No-Op) are just a single byte, but for typical options the Type–Length–Data sequence is the norm.