For Connectivity, I refer to the book:
J2EE Connector Architecture and Enterprise Application Integration This is another huge topics, as it covers
JDBC, JAXP, JAAS, JCA, etc, nearly each technology contains 1 question in this section. So, just know the basic idea is enough. You dont need to get into too details.
For deployment, you can refer to Chapter 5 of SCWCD Exam Study Kit, and Chapter 13 of HF EJB. In fact, there are only 4 questions about it, and it is not that difficult.
Best luck for your exam.
Nick
SCJP 1.2, OCP 9i DBA, SCWCD 1.3, SCJP 1.4 (SAI), SCJD 1.4, SCWCD 1.4 (Beta), ICED (IBM 287, IBM 484, IBM 486), SCMAD 1.0 (Beta), SCBCD 1.3, ICSD (IBM 288), ICDBA (IBM 700, IBM 701), SCDJWS, ICSD (IBM 348), OCP 10g DBA (Beta), SCJP 5.0 (Beta), SCJA 1.0 (Beta), MCP(70-270), SCBCD 5.0 (Beta), SCJP 6.0, SCEA for JEE5 (in progress)