c# - Why IEnumerable method call the database without condition?

I have these method in my Generic Repository :

public IQueryable Query()
{
    return _dbSet.AsQueryable();

}

public IEnumerable Enum()
{
    return _dbSet.AsEnumerable();
}

If I call these method in my service layer

_repo.Query().Where(w => w.IsActive == true);
_repo.Enum().Where(w => w.IsActive == true);

The Queryable method will call this TSQL Syntax in the database, profiler below :

SELECT 
    [Extent1].[ProjectID] AS [ProjectID], 
    [Extent1].[Name] AS [Name], 
    [Extent1].[IsActivity] AS [IsActivity], 

    [Extent1].[IsActive] AS [IsActive]
    FROM [dbo].[Project] AS [Extent1]
    WHERE 1 = [Extent1].[IsActive]

which is expected, but the Enumerable method will select everything in the database without where condition, profiler below :

SELECT 
    [Extent1].[ProjectID] AS [ProjectID], 
    [Extent1].[Name] AS [Name], 

    [Extent1].[IsActivity] AS [IsActivity], 
    [Extent1].[IsActive] AS [IsActive]
    FROM [dbo].[Project] AS [Extent1]

It means that the Enumerable will greedily call every record in the database including IsActive = 0 record. Why is this happening? I thought IEnumerable is suppose to be deffered which means it won't do anything until something like ToList() is called.

Any help will be appreciated and apologize for bad english.