Cluster Index - Always logical ordering sometimes physical ordering

IF Object_id('T1') is NOT NULL
DROP TABLE T1
Go
CREATE TABLE T1(Name varchar(20))
Go
INSERT T1 (Name) values ('Apple'),('Boy'), ('Dog'),('Elephant')

GO
SELECT * From T1

CREATE CLUSTERED INDEX CINDX_T1 ON T1(NAME)

/*
1 – data page

2 – index page

3 and 4 – text pages

8 – GAM page

9 – SGAM page

10 – IAM page

11 – PFS page
*/

DBCC IND('SQLCommitted',T1,-1)

/*
dbcc page ( {‘dbname’ | dbid}, filenum, pagenum [, printopt={0|1|2|3} ])
*/
DBCC TRACEON (3604);

DBCC PAGE ('SQLCommitted', 1,668, 1)

INSERT T1 (Name) values ('Cat')

DBCC PAGE ('SQLCommitted', 1,664, 1)

DBCC PAGE ('SQLCommitted', 1,664, 2)

ALTER TABLE T1 REBUILD

DBCC IND('SQLCommitted',T1,-1)

DBCC PAGE ('SQLCommitted', 1,664, 1)

DBCC PAGE ('SQLCommitted', 1,664, 2)

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