Comprehensive and Detailed In-Depth Explanation:The serial console on Infoblox appliances provides low-level access for diagnostics:
* Default Settings:Per NIOS documentation, the serial port operates at9600 baud, with 8 data bits, no parity, 1 stop bit (8N1). This is an industry-standard rate for serial terminals, balancing speed and reliability.
* Verification:Connecting via a terminal emulator (e.g., PuTTY, minicom) requires matching 9600 bps- mismatched rates garble output, a common troubleshooting issue.
* Options:
* A (2400):Too slow, used in older systems, not Infoblox. Incorrect.
* B (9600):Matches NIOS spec. Correct.
* C (39400):Non-standard, likely a typo (38400 is common elsewhere, but not here). Incorrect.
* D (57600):Faster rate for modern devices, not Infoblox default. Incorrect.
* Practical Example:In an INE lab, you'd set PuTTY to 9600 bps, connect via null modem cable, and view boot logs, troubleshooting a Grid member's startup.References:Infoblox NIOS Administrator Guide - Serial Console; INE Course Content: NIOS DDI Grid Troubleshooting.