Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_29 (network VARCHAR, model VARCHAR)
### Question:
Which network has model nForce Professional 3400 MCP?
### Answer:
SELECT network FROM table_name_29 WHERE model = "nforce professional 3400 mcp"