Cisco Certified Support Technician (CCST) NetworkingIP ServicesMedium
A network security team is analyzing log messages from a router and sees an entry with a severity level of 'Emergency (0)'. What does this severity level indicate about the event that occurred?
- AA critical system event requiring immediate attention, system unusable.
- BA warning about potential future issues.
- CA minor informational message, no action required.
- DA non-critical error that might impact performance.
Show answer & explanationAnswer & explanation
Correct answer: A. A critical system event requiring immediate attention, system unusable.
In Syslog, 'Emergency (0)' is the highest severity level, indicating that the system is unusable and immediate action is required. This level is reserved for the most critical failures.
Why the other options are wrong
- B. This describes 'Warning' (4).
- C. This describes 'Informational' (6) or 'Debug' (7).
- D. This describes 'Warning' (4) or 'Error' (3).
Syslog Severity: Emergency (0)
The 'Emergency' (0) severity level in Syslog indicates that the system is completely unusable. These are critical events that usually result in a crash or a complete failure of a core system component, demanding immediate intervention.
- Highest Syslog severity level (0).
- System unusable, immediate action required.
- Indicates catastrophic failure.
Memory trick: 0 is 'Oh no!', 7 is 'So what?'