Thread pools are important due to which one of the following statements: O a. Thread pools limit the number of threads and allow very fast connection to the clients b. Thread pools limit the number of threads makes the server start faster O C. Thread pools limit the number of threads which allows full system utilization O d. Thread pools limit the number of threads and so no clients have to wait Kernel means: O a. The parts of the OS code concerned with security. O b. The entire software shipped as OS by the manufacture. O . Architecture dependent parts of the OS code. O d. Program running at all times on the computer. For Memory protection the OS uses two registers to control the process address space. Which one of the following is correct? a. The base register holds the value of the process size O D. The base register and the limit register are both address values O c. The base register and the limit register are both sizes Od. The limit register holds the value of the process size