The goal is to normalize inconsistent field names and data types from different vendors into a CIM-like structure using XSIAM content optimization rules, specifically for 'protocol_id' and 'bytes_in'. Option A: Is a strong candidate. - 'map_field' : Directly addresses the conversion of 'protocol_id' (e.g., integer '6') to a string 'TCP', which is a common normalization task when source systems use numeric codes while the target (CIM) expects readable names. - 'transform_field' with 'to_integer': Directly addresses the data type conversion for 'bytes_in' (assuming 'in_byteS might be a string or other non-integer type) and renames it to the CIM equivalent. Option E: Is also a strong candidate and very similar to A, demonstrating alternative syntax or rule types. - 'standardize_values': This rule type explicitly handles mapping multiple source values to a single standard output value for 'protocol_id', which is exactly what's needed for 'protocol_id' normalization. - This rule type combines both data type casting (e.g., ensuring 'bytes_in' is a ' long' integer) and field renaming in a single, clear step. This is a very common and efficient way to normalize data types and names simultaneously. Why others are less optimal: - B : Uses generic 'normalize_protocor and rule types which are conceptually correct but the provided YAML snippet is less specific to XSIAM's typical syntax than A or E, and 'normalize_protocol' is vague without an explicit mapping. 'output_field' is redundant if renaming is implied by 'target_type' . - C : 'extract_regex' is for pulling data from unstructured strings, not mapping existing structured fields. 'calculate_field' for implies a calculation, not just a type conversion and rename, and 'cisco_input_octets / 8' is an unnecessary conversion (bytes are bytes, not bits, unless explicitly stated). - D : 'rename_field' is good for names, but 'enrich_field' with a 'lookup_table' for 'bytes_in' is nonsensical for a simple type conversion. Enrichment is for adding new context, not changing the type of an existing numerical field.