Final answer:
SQL Server supports Cross Joins through two standards: ANSI SQL-92 with explicit CROSS JOIN syntax and ANSI SQL-89 with an implicit syntax by omitting the join condition.
Step-by-step explanation:
SQL Server supports two standards for Cross Joins: ANSI SQL-92 and ANSI SQL-89. The cross join is used to combine each row from one table with all rows in another table, also known as a Cartesian product. While ANSI SQL-92 allows for explicit syntax using the CROSS JOIN keyword, ANSI SQL-89 supports cross joins through an implicit syntax, where the join condition is omitted.