1. Which Junos feature allows multiple logical routers to be configured on a single device?
Logical Systems (LSYS)
BGP Peering
Virtual LANs (VLANs)
Route Reflectors
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✅ Correct Answer: Logical Systems (LSYS)
2. What is the primary function of the Junos commit process?
To apply candidate configuration changes
To restart the device
To back up the current configuration
To install software updates
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✅ Correct Answer: To apply candidate configuration changes
3. Which command is used to enter operational mode in Junos?
cli
configure
show configuration
commit
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✅ Correct Answer: cli
4. What is the default user interface for configuring Junos devices?
CLI (Command Line Interface)
GUI (Graphical User Interface)
Web Interface
REST API
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✅ Correct Answer: CLI (Command Line Interface)
5. Which command is used to view the current configuration in Junos?
show configuration
cli
commit
restart
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✅ Correct Answer: show configuration
6. What is the purpose of the Junos rollback command?
To revert to a previous configuration
To restart the device
To back up the current configuration
To install software updates
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✅ Correct Answer: To revert to a previous configuration
7. Which Junos mode is used for making configuration changes?
Configuration mode
Operational mode
Monitor mode
Shell mode
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✅ Correct Answer: Configuration mode
8. What is the purpose of the Junos save command?
To save the current configuration
To restart the device
To back up the current configuration
To install software updates
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✅ Correct Answer: To save the current configuration
9. Which command is used to exit configuration mode in Junos?
Show Answer
✅ Correct Answer: exit
10. What is the purpose of the Junos load command?
To load a configuration from a file
To restart the device
To back up the current configuration
To install software updates
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✅ Correct Answer: To load a configuration from a file
11. Which Junos feature allows multiple users to configure the device simultaneously?
Configuration groups
Logical Systems (LSYS)
Virtual LANs (VLANs)
Route Reflectors
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✅ Correct Answer: Configuration groups
12. What is the purpose of the Junos compare command?
To compare the candidate configuration with the active configuration
To restart the device
To back up the current configuration
To install software updates
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✅ Correct Answer: To compare the candidate configuration with the active configuration
13. Which command is used to view system logs in Junos?
show log
cli
commit
restart
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✅ Correct Answer: show log
14. What is the purpose of the Junos request system reboot command?
To restart the device
To back up the current configuration
To install software updates
To revert to a previous configuration
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✅ Correct Answer: To restart the device
15. Which Junos feature allows you to schedule configuration changes?
Commit confirmed
Logical Systems (LSYS)
Virtual LANs (VLANs)
Route Reflectors
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✅ Correct Answer: Commit confirmed
16. What is the purpose of the Junos request system software add command?
To install software updates
To restart the device
To back up the current configuration
To revert to a previous configuration
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✅ Correct Answer: To install software updates
17. Which command is used to view interface statistics in Junos?
show interfaces
cli
commit
restart
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✅ Correct Answer: show interfaces
18. What is the purpose of the Junos request system storage cleanup command?
To free up disk space
To restart the device
To back up the current configuration
To install software updates
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✅ Correct Answer: To free up disk space
19. Which Junos feature allows you to configure multiple devices simultaneously?
Junos Space
Logical Systems (LSYS)
Virtual LANs (VLANs)
Route Reflectors
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✅ Correct Answer: Junos Space
20. What is the purpose of the Junos request system snapshot command?
To create a backup of the current configuration
To restart the device
To install software updates
To revert to a previous configuration
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✅ Correct Answer: To create a backup of the current configuration
21. Which command displays the current operational status of interfaces?
show interfaces
show configuration
show system uptime
show route
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✅ Correct Answer: show interfaces
22. What is the purpose of the "commit confirmed" command?
To automatically rollback if not confirmed
To save the configuration permanently
To verify configuration syntax
To reboot the device
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✅ Correct Answer: To automatically rollback if not confirmed
23. Which configuration mode is used to create firewall filters?
edit firewall family inet
edit interfaces
edit system
edit protocols
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✅ Correct Answer: edit firewall family inet
24. What does the "rollback 1" command do?
Reverts to the previous configuration
Deletes the last commit
Shows the last configuration change
Creates a backup
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✅ Correct Answer: Reverts to the previous configuration
25. Which command shows the routing table?
show route
show interfaces
show configuration
show system
Show Answer
✅ Correct Answer: show route
26. What is the purpose of the "request system reboot" command?
To restart the device
To save the configuration
To rollback changes
To test connectivity
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✅ Correct Answer: To restart the device
27. Which command displays the current software version?
show version
show system software
show configuration
show chassis hardware
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✅ Correct Answer: show version
28. What does the "save" command do?
Saves the current configuration
Commits the configuration
Backs up the OS
Exits configuration mode
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✅ Correct Answer: Saves the current configuration
29. Which command shows system alarms?
show system alarms
show chassis alarms
show log messages
show system status
Show Answer
✅ Correct Answer: show system alarms
30. What is the purpose of the "load override" command?
To replace the entire configuration
To merge configurations
To view configuration differences
To save the configuration
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✅ Correct Answer: To replace the entire configuration
31. Which command displays the ARP table?
show arp
show route
show interfaces
show system
Show Answer
✅ Correct Answer: show arp
32. What does the "request system storage cleanup" command do?
Frees up disk space
Formats the storage
Backs up configurations
Shows storage usage
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✅ Correct Answer: Frees up disk space
33. Which command shows the status of all chassis components?
show chassis hardware
show system hardware
show version
show interfaces
Show Answer
✅ Correct Answer: show chassis hardware
34. What is the purpose of the "file list" command?
Lists files in the file system
Shows configuration files
Displays log files
Shows installed software
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✅ Correct Answer: Lists files in the file system
35. Which command displays the active alarms?
show system alarms
show chassis alarms
show log messages
show system status
Show Answer
✅ Correct Answer: show system alarms
36. What does the "request system software add" command do?
Installs a software package
Adds a license
Updates configuration
Shows software versions
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✅ Correct Answer: Installs a software package
37. Which command shows the system uptime?
show system uptime
show version
show chassis hardware
show interfaces
Show Answer
✅ Correct Answer: show system uptime
38. What is the purpose of the "monitor traffic" command?
Captures packets on an interface
Shows interface statistics
Displays routing updates
Monitors system performance
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✅ Correct Answer: Captures packets on an interface
39. Which command displays the license information?
show system license
show version
show configuration
show chassis hardware
Show Answer
✅ Correct Answer: show system license
40. What does the "request system snapshot" command do?
Creates a backup of the system
Takes a configuration snapshot
Shows system status
Rolls back changes
Show Answer
✅ Correct Answer: Creates a backup of the system
41. Which command shows the routing protocol neighbors?
show ospf neighbor
show route
show interfaces
show system
Show Answer
✅ Correct Answer: show ospf neighbor
42. What is the purpose of the "file copy" command?
Copies files between locations
Backs up configuration
Saves logs
Installs software
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✅ Correct Answer: Copies files between locations
43. Which command displays the FPC status?
show chassis fpc
show system hardware
show version
show interfaces
Show Answer
✅ Correct Answer: show chassis fpc
44. What does the "request system zeroize" command do?
Factory resets the device
Clears logs
Deletes configurations
Restarts the system
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✅ Correct Answer: Factory resets the device
45. Which command shows the current users logged in?
show system users
show configuration
show interfaces
show system processes
Show Answer
✅ Correct Answer: show system users
46. What is the purpose of the "ping" command?
Tests network connectivity
Shows routing table
Displays interface status
Captures packets
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✅ Correct Answer: Tests network connectivity
47. Which command displays the system processes?
show system processes
show system users
show version
show chassis hardware
Show Answer
✅ Correct Answer: show system processes
48. What does the "traceroute" command do?
Shows the path to a destination
Tests connectivity
Displays routing table
Shows interface statistics
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✅ Correct Answer: Shows the path to a destination
49. Which command shows the system memory usage?
show system memory
show system storage
show version
show chassis hardware
Show Answer
✅ Correct Answer: show system memory
50. What is the purpose of the "request system halt" command?
Shuts down the system
Restarts the system
Saves configuration
Rolls back changes
Show Answer
✅ Correct Answer: Shuts down the system
51. Which command displays the system storage usage?
show system storage
show system memory
show version
show chassis hardware
Show Answer
✅ Correct Answer: show system storage
52. What does the "request system reboot" command do?
Restarts the system
Shuts down the system
Saves configuration
Rolls back changes
Show Answer
✅ Correct Answer: Restarts the system
53. Which command shows the system environment?
show chassis environment
show system hardware
show version
show interfaces
Show Answer
✅ Correct Answer: show chassis environment
54. What is the purpose of the "request system configuration rescue save" command?
Creates a rescue configuration
Saves the current configuration
Backs up the OS
Restores factory defaults
Show Answer
✅ Correct Answer: Creates a rescue configuration
55. Which command displays the system boot messages?
show system boot-messages
show log messages
show version
show chassis hardware
Show Answer
✅ Correct Answer: show system boot-messages
56. What does the "request system software validate" command do?
Checks software package integrity
Installs software
Updates configuration
Shows software versions
Show Answer
✅ Correct Answer: Checks software package integrity
57. Which command shows the system core dumps?
show system core-dumps
show system storage
show version
show chassis hardware
Show Answer
✅ Correct Answer: show system core-dumps
58. What is the purpose of the "file show" command?
Displays file contents
Lists files
Copies files
Deletes files
Show Answer
✅ Correct Answer: Displays file contents
59. Which command displays the system login history?
show system login
show system users
show version
show chassis hardware
Show Answer
✅ Correct Answer: show system login
60. What does the "request system software rollback" command do?
Reverts to previous software
Installs new software
Saves configuration
Shows software versions
Show Answer
✅ Correct Answer: Reverts to previous software
61. Which command shows the system power status?
show chassis power
show system hardware
show version
show interfaces
Show Answer
✅ Correct Answer: show chassis power
62. What is the purpose of the "file delete" command?
Deletes files
Lists files
Copies files
Displays files
Show Answer
✅ Correct Answer: Deletes files
63. Which command displays the system cooling status?
show chassis environment
show system hardware
show version
show interfaces
Show Answer
✅ Correct Answer: show chassis environment
64. What does the "request system software add" command do?
Installs software packages
Adds licenses
Updates configuration
Shows software versions
Show Answer
✅ Correct Answer: Installs software packages
65. Which command shows the system firmware versions?
show chassis firmware
show system hardware
show version
show interfaces
Show Answer
✅ Correct Answer: show chassis firmware