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_27277284_27 (socket VARCHAR, frequency VARCHAR, model_number VARCHAR)
### Question:
What kind of sockets does a 2100MHz Athlon X2 QL-64 use?
### Answer:
SELECT socket FROM table_27277284_27 WHERE frequency = "2100MHz" AND model_number = "Athlon X2 QL-64"