Are active directory replication bitlocker encryption distributed file system ntfs permissions supported in windows 2003?

Yes, Active Directory, NTFS permissions, and the Distributed File System (DFS) are supported in Windows Server 2003. However, BitLocker Drive Encryption is not available on Windows Server 2003; it was introduced later in Windows Vista and Windows Server 2008. Thus, while the other features you mentioned are supported in Windows Server 2003, BitLocker is not.