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| Section | Objectives |
|---|---|
| Virtualization Concepts and Implementation | - Hypervisors and architectures
|
| Container Orchestration | - Scaling and deployment
|
| Container Virtualization | - Container lifecycle management
|
| Storage, Networking, and Security | - Security
|
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NEW QUESTION # 58
Which of the following values would be valid in the FROM statement in aDockerfile?
Answer: D
NEW QUESTION # 59
If aDockerfilecontains the following lines:
WORKDIR /
RUN cd /tmp
RUN echo test > test
where is the filetestlocated?
Answer: D
NEW QUESTION # 60
What is the purpose of the packer inspect subcommand?
Answer: E
Explanation:
* The purpose of the packer inspect subcommand is to display an overview of the configuration contained in a Packer template1. A Packer template is a file that defines the various components a Packer build requires, such as variables, sources, provisioners, and post-processors2. The packer inspect subcommand can help you quickly learn about a template without having to dive into the HCL (HashiCorp Configuration Language) itself1. The subcommand will tell you things like what variables a template accepts, the sources it defines, the provisioners it defines and the order they'll run, and more1.
* The other options are not correct because:
* A) Retrieve files from an existing Packer image. This is not the purpose of the packer inspect subcommand. To retrieve files from an existing Packer image, you need to use the packer scp subcommand, which copies files from a running instance of a Packer image to your local machine2.
* B) Execute commands within a running instance of a Packer image. This is not the purpose of the packer inspect subcommand. To execute commands within a running instance of a Packer image, you need to use the packer ssh subcommand, which connects to a running instance of a Packer image via SSH and runs the specified command2.
* C) List the artifacts created during the build process of a Packer image. This is not the purpose of the packer inspect subcommand. To list the artifacts created during the build process of a Packer image, you need to use the packer build subcommand with the -machine-readable flag, which outputs the build information in a machine-friendly format that includes the artifact details2.
* D) Show usage statistics of a Packer image. This is not the purpose of the packer inspect subcommand. To show usage statistics of a Packer image, you need to use the packer console subcommand with the -stat flag, which launches an interactive console that allows you to inspect and modify variables, sources, and functions, and displays the usage statistics of the current session2. References: 1: packer inspect - Commands | Packer | HashiCorp Developer 2:
Commands | Packer | HashiCorp Developer
NEW QUESTION # 61
FILL BLANK
What command is used to run a process in a new Linux namespace? (Specify ONLY the command without any path or parameters.)
Answer:
Explanation:
unshare
Explanation
The unshare command is used to run a process in a new Linux namespace12. It takes one or more flags to specify which namespaces to create or unshare from the parent process1. For example, to run a shell in a new mount, network, and PID namespace, one can use:
unshare -mnp /bin/bash
References:
* 1: unshare(1) - Linux manual page - man7.org
* 2: A gentle introduction to namespaces in Linux - Packagecloud
NEW QUESTION # 62
FILL BLANK
What LXC command lists containers sorted by their CPU, block I/O or memory consumption? (Specify ONLY the command without any path or parameters.)
Answer:
Explanation:
lxc-top
NEW QUESTION # 63
......
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