300-435 · Question #49
What does the command boot ipxe forever switch 1 perform when executed on a Cisco IOS XE device?
The correct answer is A. It continuously sends DHCP requests for IPXE until the device boots with an image. The command boot ipxe forever switch 1 on a Cisco IOS XE device causes it to continuously send DHCP requests to obtain boot information and an iPXE image until a successful boot occurs.
Question
Options
- AIt continuously sends DHCP requests for IPXE until the device boots with an image.
- BIt continuously sends DNS requests for IPXE until the device restarts.
- CIt continuously sends DNS requests for IPXE until the device boots with an image.
- DIt continuously sends DHCP requests for IPXE until the device restarts.
How the community answered
(47 responses)- A87% (41)
- B2% (1)
- C6% (3)
- D4% (2)
Why each option
The command `boot ipxe forever switch 1` on a Cisco IOS XE device causes it to continuously send DHCP requests to obtain boot information and an iPXE image until a successful boot occurs.
The `boot ipxe` command initiates an iPXE boot process, which relies on DHCP to obtain network boot parameters and the boot image, and the `forever` keyword instructs the device to continuously send these DHCP requests until it successfully boots with an image.
The iPXE boot process primarily uses DHCP to obtain network configuration and boot image information, not DNS requests, for its initial booting phase.
iPXE relies on DHCP to acquire its boot configuration and image, not primarily DNS, and the command aims for a successful boot rather than just restarting.
While iPXE does use DHCP, the `forever` keyword and the purpose of a boot command imply waiting for a successful boot with an image, not merely a restart of the device.
Concept tested: Cisco IOS XE iPXE boot process
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