Static Vs Dynamic profile parameters

How do I know if a profile parameter is dynamically changeable or static? If it is static it will require a restart of the system once changed. Do the colors red or black in rz10 indicate this?

The complete list of the dynamically switchable parameters can be found in the table TPFYPROPTY. Follow the steps below:
1) Run Tcode SE112) Insert TPFYPROPTY in the 'database table' column and click on 'display'3) In this screen click on 'contents'4) Insert 'X' in the field 'DYNAMIC' and then execute
You fill find the list of parameters that are dynamically switchable.Hope this helps.

SAP Notes Vs Support Packs

What is the difference between SAP notes and support packages?

NOTES When a user of SAP system finds a bug in the SAP product he reports the same to SAP support, SAP developers check the same and develop a correction for the same. This correction is sent to the customer in the form of a SAP NOTE.
SUPPORT PACKS If the same or similar bug is reported by multiple clients or end users, then SAP recognizes such bugs, corrects them and collects all these corrections in one place and adds some enhancements to the earlier version of SAP and then calls this as a SUPPORT PACK. In simple words collection of SAP NOTES is a SUPPORT PACK.

MMC not starting

Today, when I started my machine I am unable to start the SAP MMC console. Also, I am not able to see any sub links which are usually there to right-click and start my server.
How can I get back those sub links in the SAP MMC console?

It seems that the SAP services (i.e. SAPOSCOL and SAPSERVICE) are not running. Start the services and change the "startup type to "Automatic".

Customizing Vs Workbench Requests

Why are transport requests classified into workbench and customizing? What does this classification indicate?

All customizing changes (changes to SAP functionality) are collected in customizing requests. Changes to the SAP repository and data dictionary (customers development or changes to SAP standard objects) are collected in workbench requests.