Oracle
1Z0-105 · Question #70
1Z0-105 Question #70: Real Exam Question with Answer & Explanation
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Question
You run the crash utility on an Oracle Linux system after a kernel panic and use the bt - a command as shown: crash> bt -a PID: 286 TASK: c0b3a000 CPU: 0 COMMAND: "in.rlogind" #0 [c0b3be90] crash_save_current_state at c011aed0 #1 [c0b3bea4] panic at c011367c #2 [c0b3bee8] tulip_interrupt at c01bc820 #3 [c0b3bf08] handle_IRQ_event at c010a551 #4 [c0b3bf2c] do_8259A_IRQ at c010a319 #5 [c0b3bf3c] do_IRQ at c010a653 #6 [c0b3bfbc] ret_from_intr at c0109634 EAX: 00000000 EBX: c0e68280 ECX: 00000000 EDX: 00000004 EBP: c0b3bfbc DS: 0018 ESI: 00000004 ES: 0018 EDI: c0e68284 CS: 0010 EIP: c012f803 ERR: Ffffff09 EFLAGS: 00000246 #7 [c0b3bfbc] sys_select at c012f803 #8 [c0b3bfc0] system_call at c0109598 EAX: 0000008e EBX: 00000004 ECX: bfffc9a0 EDX: 00000000 DS: 002b ESI: bfffc8a0 ES: 002b EDI: 00000000 SS: 002b ESP: bfffc82c EBR: bfffd224 CS 0023 EIP: 400d032e ERR: 0000008e EFLAGS: 00000246 Which two statements are true about the purpose of the bt -a command?
Options
- AIt shows stack traces of all tasks and threads.
- BIt shows stack traces of the active task on each CPU.
- CThe output of each CPU must be requested separately.
- DIt may help show a relationship between panicking tasks on one CPU and tasks on other CPUs.
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