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Infrastructure and AutomationhardMultiple ChoiceObjective-mapped

200-901 Infrastructure and Automation Practice Question

An organization implements zero-touch provisioning (ZTP) for new Cisco routers using DHCP and TFTP. The provision script is not being executed even though the device obtains an IP address. The DHCP server logs show the option 67 (bootfile-name) and option 150 (tftp-server) are set. What is the most probable reason?

⚠ Common exam trap

Cisco often tests the distinction between DHCP options being configured correctly on the server versus the actual file availability on the TFTP server, leading candidates to incorrectly blame network connectivity (option C) or DHCP server authority (option A) when the real issue is a simple filename mismatch.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

The script file name in option 67 does not match the actual file on the TFTP server

The most common reason for a ZTP script not executing after a device obtains an IP address is a mismatch between the bootfile name specified in DHCP option 67 and the actual filename on the TFTP server. Even if the DHCP server logs show option 67 and 150 are set, the router will attempt to download the file specified in option 67; if that file does not exist or is named differently on the TFTP server, the download fails and the script is not executed.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • The DHCP server is not authoritative

    Why it's wrong here

    Authoritative status does not affect ZTP script execution.

  • The script file name in option 67 does not match the actual file on the TFTP server

    Why this is correct

    A mismatch in filename prevents the device from loading the script.

  • The TFTP server IP is unreachable from the router

    Why it's wrong here

    If the TFTP server were unreachable, the device would not obtain the script, but DHCP options are set correctly.

  • The router does not support ZTP

    Why it's wrong here

    Most modern Cisco routers support ZTP.

Visual reference

Client DHCP Server 1 Discover (broadcast) 2 Offer (IP: 192.168.1.10) 3 Request (I accept) 4 Acknowledge (lease confirmed) DORA — the four-step DHCP lease process

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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