User Interfaces
A user just entered the command user@router# save current.conf Assuming the default settings, where in the file system is current.conf saved?
/var/home/user/
For how many minutes is the configuration activated when the commit confirmed command is used?
10 minutes
What information does the help reference command provide?
A brief description of commands and their default values.
Which of these are true when using the configure exclusive command? (Choose three)
A message indicates that another user has locked the configuration, the CLI displays the user and the hierarchy level the user is viewing or editing. When a user commits, only the user's changes are committed. Only a single user can make changes to the configuration.
Which of these are true about the configure exclusive command? (Choose three)
All uncommitted changes made by the user are lost when exiting exclusive configuration mode. Multiple users can enter the configuration mode. It prevents other users from editing the configuration.
Which keystroke combination will allow you to erase a single word to the left of the cursor?
Crtl + w
Which keystroke combination will allow you to erase the current command?
Ctrl + u
rollbacks
Current configuration (from the most recent commit) is rollback 0 show | compare rollback 0 - compares candidate configuration with the active configuration from one commit ago (in other words, the last commit) show | compare rollback 1 - compares candidate configuration with active configuration from two commits ago
saving current config
If you do not specify a path, the Junos OS saves the configuration to the user's working directory. As an example, if user Nancy saved a configuration file without specifying a path name, the configuration file would be saved in the /var/home/nancy directory by default.
Which of these is true about the load override command?
It will completely overwrite the current configuration with the configuration you load.
configuration commands executed
Junos configuration commands can be executed at multiple levels. 1. From the top of the configuration hierarchy [edit], type the full command. 2. Or, navigate to the specific configuration hierarchy, like [edit protocols] and type the shorter version of the command.
Which J-Web tab allows you to add licenses to the device?
Maintain
Which of these about candidate configuration are true? (Choose three)
The candidate configuration is initially a copy of the active configuration. The candidate configuration is a temporary configuration that could become the active configuration. The configure private command allows multiple users to edit the candidate configuration.
save current candidate config in set format
The display set switch can be used with show commands to view the set configuration commands used. ex: [edit] user@router# show | display set | save /var/tmp/current.conf
edit
The edit command is used to navigate to a configuration hierarchy.
-----Exhibit----- Amnesiac (ttyu0) login: -----Exhibit----- Which of these is true about the information shown in the exhibit?
The factory default configuration is running on the device.
top
The top command can be used to go to the top of the configuration hierarchy. It can also be used with other commands to execute them as you'd execute from the top of the configuration hierarchy.
displays all output at once
Use the no-more switch to display the output all at once instead of one screen at a time. By default, Junos output is paginated.
Which of this is true when a user enters private configuration mode by typing configure private? (Choose two)
When a user commits, only the user's own changes are committed. All users have their own private candidate configuration.
help apropos
When the exact syntax of a configuration command is not known, the CLI command help apropos can be used to obtain a list of all configuration-mode commands that contain a particular text string.
loggin in as root
When you log in as root, you'll be placed in the shell mode which can be identified with the % symbol.
Which of these commands can be used to view the configuration of interface ge-0/0/1.0 ?
[edit protocols bgp] user@router# top show interfaces ge-0/0/1.0
You are at the top of the hierarchy and you must configure OSPF on interface ge-0/0/0 unit 1. Which of these will achieve the result? (Choose two)
[edit] user@router# set protocols ospf area 0 interface ge-0/0/0.1 [edit] user@router# edit protocols [edit protocols] user@router# set ospf area 0 interface ge-0/0/0.1
Which of these commands can be used to save the current candidate configuration in set format to permanent storage?
[edit] user@router# show | display set | save /var/tmp/current.conf
After logging in as a root user, which of these commands must be used to enter operational mode?
cli
Which of these commands will allow you to enter operational mode from the shell mode?
cli
Which command can be used to validate the syntax of a configuration without applying the configuration?
commit check
Which command causes the Junos OS temporarily activate a configuration?
commit confirmed
Which CLI mode allows you to make configuration changes?
configuration mode
Which configuration more allows only a single user to edit the configuration?
configure exclusive
Which CLI keyboard sequence allows you to move the cursor to the beginning of the line?
ctrl + a
Which of these commands will allow you to navigate to [edit interfaces] hierarchy?
edit interfaces
Which of these help commands gives a list of commands in which a given keyword is used throughout Junos?
help apropos
Which of these commands can be used to identify the meaning of a syslog message?
help syslog
Which of these arguments can be used with the load command to combine the current configuration with the configuration you load?
merge
Which of these commands can be used to discard changes made to candidate configuration? (Choose two)
rollback 0 rollback
You configured an interface with an IP address and committed the change. You then added an exception in a firewall filter and committed the change. You realize that the change was made on the wrong device. How do you undo all these changes?
rollback 2 Explained: In this example: 1. Before you configure the device - rollback 0 is the current candidate configuration (say C1) 2. After you configure the interface and commit the change - rollback 0 is the new candidate configuration (say C2) and rollback 1 is the previous configuration (C1) 3. After you configure the firewall filter and commit the change - rollback 0 is the new candidate configuration (say C3), rollback 1 is the configuration with the interface change (C2), and rollback 2 is the original configuration you started with (C1)
Which of these prompts will you see when you log in as root?
root%
Which of these commands will enable access to J-Web using HTTPS?
set system services web-management https
Which of these commands can be used to display all output at once?
show interfaces | no-more
What will be the output of the command show | compare rollback 1?
the difference between the candidate configuration and the active configuration from two commits ago
Which of these can you find using CLI help command? (Choose two)
tips and CLI commands information on specific system log error messages
What information does the help topic command provide?
usage guidelines for a topic or configuration statement
After using the commit confirmed command, which command can be used to see when a rollback is scheduled?
user@host> show system commit
Which of these commands can be used to write the candidate configuration to an ASCII file?
user@router# save /var/tmp/current.conf
Which of these commands can be used to verify the SSH configuration?
user@router# show system services
Which of these indicates that you're in operational mode?
user@router>
Which of these commands can be used to view the active configuration?
user@router> show configuration
Which of these commands can be used to display output one page at a time?
user@router> show interfaces
Which of these functions are available under the "Maintain" tab of J-Web? (Choose two)
view and add licenses reboot the device Also available: Files Config Management Snapshot
Which character indicates that you're at the configuration mode?
#
Which character indicates that you're at the shell mode?
%
