Infrastructure Maintenance Flashcards

Which file system location stores the Cisco IOS image on most routers?

Answer: Flash

The IOS image is stored in Flash memory, which is non-volatile and retains content after power loss.

A network admin wants to upgrade IOS using TFTP. Which command copies the IOS image from a TFTP server to flash?

Answer: copy tftp flash

The 'copy tftp flash' command downloads an IOS image from a TFTP server and stores it in flash memory.

What is the function of the configuration register value 0x2142 on a Cisco router?

Answer: Bypasses the startup configuration in NVRAM

Config register 0x2142 tells the router to ignore the startup-config, which is used for password recovery procedures.

During password recovery on a Cisco router, what key sequence is used to interrupt the boot process and enter ROM Monitor (ROMmon) mode?

Answer: Break key (Ctrl+Break)

Sending a Break signal (typically Ctrl+Break) within the first 60 seconds of boot interrupts the process and enters ROMmon mode.

Which command shows the contents of a router's flash memory?

Answer: dir flash:

The 'dir flash:' command lists the files and directories stored in flash memory.

What happens if a Cisco router boots and cannot find a valid IOS image in flash?

Answer: It enters ROM Monitor (ROMmon) mode

If no valid IOS image is found in flash, the router falls back to ROMmon mode for recovery.

A Cisco switch needs to be configured with a management IP address. On which interface is this typically configured?

Answer: Vlan1 (SVI)

A Layer 2 switch uses a Switched Virtual Interface (SVI), typically VLAN 1, to assign a management IP address.