Command Line Interface Basics

Questions and Answers

What is the main function of the user view in a device's CLI?

To provide access to all configuration commands.

To configure multiple parameters for interfaces.

To display only querying and tool commands. (correct)

To manage file systems and directories.

Which command is used to enter the system view from the user view?

config terminal

entry view

interface GigabitEthernet

system-view (correct)

In a command, which elements must be separated by spaces?

Keywords only

Command word, keywords, parameter names, and parameter values (correct)

Command words only

Only parameter names and values

If a device has a lower-level configuration view, where would you find the command to enter it?

In the system view Signup and view all the answers

What does the term 'keyword' refer to in the context of a command?

Any string except a parameter value string Signup and view all the answers

What is the primary function of the 'pwd' command?

It displays the current working directory. Signup and view all the answers

Which command would you use to permanently delete a file without the possibility of recovery?

delete /unreserved filename Signup and view all the answers

What conditions must be met for the 'rmdir' command to be successful?

The directory to be deleted must not contain any files. Signup and view all the answers

What will happen if you attempt to copy a file to a location where the target file already exists?

A message will indicate that the target file will be replaced. Signup and view all the answers

If you want to rename a directory, which command should you use?

rename directory old-name new-name Signup and view all the answers

Study Notes

Command Line Interface (CLI) Overview

Successful login to a device is indicated by the command prompt appearing.
Each command consists of one command word, multiple keywords, and parameters.
Parameters include a name and value, separated by spaces.
User view is the initial interface post-login and supports only query and tool commands.

User Views and Configurations

System view can be accessed from the user view.
User view provides display and tool commands like ping and telnet, without configuration commands.
Enter system view using the command: system-view.
Global configuration commands are available in the system view.

Interface Configuration

Commands like interface GigabitEthernet X enter interface-specific views for individual GE configurations.
Keywords in commands are defined as strings that do not include parameter values.

File Management Commands

Basic file commands include:
- pwd to show the current directory.
- dir [/all] [filename | directory] to display file information.
- more [/binary] filename [offset] [all] to view file content.
Directory management commands include:
- cd directory to change directories.
- mkdir directory to create a new directory (1-64 characters).
- rmdir directory to delete an empty directory.

File Operations

copy source-filename destination-filename replaces files if the destination exists; cannot use the system startup file name.
move source-filename destination-filename moves files within the same storage medium.
rename old-name new-name changes file/directory names.
delete [/unreserved] [ /force ] {filename | devicename} deletes files, with options for permanent deletion or sending to the recycle bin.

User Interface Management

System supports both console and VTY interfaces.
Console ports are serial connections; VTY is accessed via Telnet or SSH (up to 15 concurrent users).
Use user-interface maximum-vty number to configure maximum concurrent VTY logins.

IP Configuration

Configure an IP address on interfaces using ip address {mask | mask-length}.
Loopback interfaces simulate networks and support multiple protocols.

Device Configuration Management

Check physical interface status; interfaces are up by default.
Use undo shutdown to re-enable disabled interfaces.
reset saved-configuration clears saved configurations and defaults to factory settings without specified files.
display startup shows current and next startup software and configuration details.

Startup Configuration

Run startup saved-configuration configuration-file to set next startup configuration file.
The reboot command prompts to save configurations before restarting.
User passwords can be set using set authentication-mode password password.

Configuration File Management

Configurations saved by default in vrpcfg.cfg, but custom files can be created.
In VRPv5, configuration files are stored in the flash: directory.
The system defaults to initialization parameters if no configuration file is present during startup.

Product Versions

Most Huawei datacom products use VRPv5; some models like NE series utilize VRPv8.
Console interface allows only one user login at a time (console user ID fixed at 0).

Description

This quiz focuses on the fundamental concepts of the Command Line Interface (CLI) used in various devices. Participants will learn about command words, keywords, parameters, and the user view displayed upon logging in. Test your understanding of how to effectively navigate and use the CLI.