353.2 Packer (weight: 2) LPIC-3-VIRTUALIZATION Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   An engineer is building a minimal Linux image for a lab environment using QEMU. The template uses the `qemu` builder. The engineer wants to ensure the build process is reproducible and does not depend on the build host's network beyond downloading the ISO. What should be configured?

   • ASet `headless` to `true` to run the build without a GUI.
   • BUse `ssh_host_port_min` and `ssh_host_port_max` to fix the SSH port.
   • CSet `accelerator` to `kvm` to speed up the build.
   • DUse a local ISO file path and set `iso_checksum` to a known value.
   Reveal Solution Discussion Select an answer first
2. 2application · easy

   A team uses a Packer template to build Ubuntu images. They want to ensure the template is syntactically correct and all required variables are provided before running a full build. Which command should they run?

   • A`packer build -check template.pkr.hcl`
   • B`packer fmt -check template.pkr.hcl`
   • C`packer validate template.pkr.hcl`
   • D`packer inspect template.pkr.hcl`
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   Which two formats can be used to write a Packer template file?

   • AHCL2 and YAML
   • BTOML and JSON
   • CJSON and HCL2
   • DYAML and XML
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   An administrator manages a Packer template written in HCL2 that builds Windows Server 2022 images. The template hard-codes the ISO URL, the administrator password, and the VM name. The team wants to reuse this template for different environments (dev, staging, prod) without editing the file each time. What is the most maintainable approach?

   • ACreate a separate template file for each environment.
   • BReplace hard-coded values with variable declarations and provide values via a `.pkrvars.hcl` file or `-var` flags.
   • CUse environment variables directly inside the template with `${env("VAR")}` syntax.
   • DUse a `local` block to define all environment-specific values.
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   In a Packer build, what is the role of a post-processor?

   • ATo define the source image and target platform for the build.
   • BTo install software and configure the image after the builder creates it.
   • CTo validate the template syntax before the build starts.
   • DTo perform actions on the built artifact, such as compressing it or uploading it to a storage service.
   Reveal Solution Discussion Select an answer first