Checkpoint Updated 156-587 Exam Questions and Answers by everlyn

A core dump file is essentially a snapshot of the process's memory at the time of the crash. This snapshot includes crucial information that can help diagnose the cause of the crash. Here's why all the options are relevant:

i. Program Counter:This register stores the address of the next instruction the CPU was supposed to execute. It pinpoints exactly where in the code the crash occurred.

ii. Stack Pointer:This register points to the top of the call stack, which shows the sequence of function calls that led to the crash. This helps trace the program's execution flow before the crash.

iii. Memory management information:This includes details about the process's memory allocations, which can reveal issues like memory leaks or invalid memory access attempts.

iv. Other Processor and OS flags/information:This encompasses various registers and system information that provide context about the state of the processor and operating system at the time of the crash.

By analyzing this information within the core dump, you can often identify the root cause of the crash, such as a segmentation fault, null pointer dereference, or stack overflow.

Check Point Troubleshooting References:

While core dumps are a general concept in operating systems, Check Point's documentation touches upon them in the context of troubleshooting specific processes like fwd (firewall) or cpd (Check Point daemon). The fw ctl zdebug command, for example, can be used to trigger a core dump of the fwd process for debugging purposes.

The STAT column in the output of the cpwd_admin list command shows the status of the monitored process. The possible values are E for established, meaning that the process is running, or T for terminated, meaning that the process is not running. The STAT column is useful for quickly checking if any critical process has crashed or failed to start. If the value is T, the process should be restarted and the reason for the termination should be investigated. The STAT column does not show the Watch Dog name, the number of times the process was started, or the monitoring method of the Watch Dog.