JNCIA Exam 1

1. What are the few advantages of the Junos OS?
2. The routing engine is responsible for system management, chassis components, controlling the router interfaces  and user access to the router
3. Which type of traffic is passed directly to the routing engine for processing?
4. Which device labels represent the Juniper switches?
5. Under Junos CLI, which three modes don't exist?
6. Match the Junos CLI modes with its operations
Operational mode
Monitor and troubleshoot the Junos OS, hardware and network connectivity

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Enter statements to configure the device including interfaces, routing protocols and user access

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Configuration mode
Monitor and troubleshoot the Junos OS, hardware and network connectivity

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Enter statements to configure the device including interfaces, routing protocols and user access

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7. Under Junos CLI, the 'exit' command is used to provide the quickest way of returning to the top of the hierarchy
8. Match the Junos command with its usage
show | compare
Displays additional information about the configuration

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Displays the difference between current and candidate configuration

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Display the configuration as a series of configuration mode commands

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Displays the configuration currently running on the device

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show | display set
Displays additional information about the configuration

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Displays the difference between current and candidate configuration

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Display the configuration as a series of configuration mode commands

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Displays the configuration currently running on the device

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show configuration
Displays additional information about the configuration

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Displays the difference between current and candidate configuration

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Display the configuration as a series of configuration mode commands

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Displays the configuration currently running on the device

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show | display detail
Displays additional information about the configuration

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Displays the difference between current and candidate configuration

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Display the configuration as a series of configuration mode commands

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Displays the configuration currently running on the device

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9. Which tab of the J-Web interface provides an interface to manage file systems, configuration files and Junos OS?
10. Admin account in a factory-default configuration allows access to the Junos OS
11. You have configured a new Juniper router, what you need to do before committing a configuration?
12. Choose the correct order of the parts of an interface name used in a Juniper device
13. What comes under the logical properties of an interface?
14. Which command is used to display real-time log information?
15. What are the some of the features supported by SNMP version 3, that SNMP version 1 and 2 do not provide?
16. Junos devices can be monitored using Junos CLI and J-web interface
17. Put the steps involved in recovering the root password on a Juniper device in the correct order
  • Set the root password
  • Commit and reboot the device
  • Reboot the device
  • Enter into bootstrap loader or recovery mode
18. Which of the following commands is used to display only BGP routes?
19. What is the maximum number of configurations that are recoverable using the rollback command?
20. Which command provides the below output?

 
21. Referring to the exhibit below, what does the number 5 inside [Static/5] represent?

22. BGP and OSPF routes cannot be matched using a routing policy
23. Which command is used to show files and directories stored in /var/home/

24. In case of a policy statement, when a match occurs, the Junos OS checks the next term by default
25. In the firewall filter, which action modifier specifies class of service(Cos) information?
26. Which of the following Junos OS tool can protect against IP spoofing that can occur during a denial-of-service (DoS) attack?
27. In the figure below, router R1 and R2 should not be configured to perform RPF checks?

28. Which classifier type is configured under [edit firewall family inet] hierarchy level?

 
29. Behavior Aggregate Classifier is configured like regular firewall filters
30. Which command is used to reboot the Juniper network device?
31. Which command shows the IPv6 routing table as shown below?

32. In Junos software architecture, the control functions are separated from the forwarding functions
33. Following command can be used to set a Junos device's hostname

user@router> set system host-name <name>
34. Junos device's date and time can be set using the following command

set date

This command is entered in which mode?
35. In Junos software architecture, the forwarding plane provides the following functions?
36. Which command lists all physical and logical interfaces, and allows you to verify the up/down state and IP address?
37. Following operational command provides the most detailed output for a given interface

show interfaces <interface-name> extensive
38. In which routing table would you find an IPv4 BGP route?
39. In the case of the same route populated by different routing protocols ( e.g. OSPF, BGP, EIGRP), which route will be active?
40. Match the routing table with its function
inet.0
Default unicast routing table for IPv6 routes

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Used for IPv6 multicast forwarding cache

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Used for IPv4 multicast forwarding cache

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Default unicast routing table for IPv4 routes

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inet6.0
Default unicast routing table for IPv6 routes

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Used for IPv6 multicast forwarding cache

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Used for IPv4 multicast forwarding cache

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Default unicast routing table for IPv4 routes

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inet.1
Default unicast routing table for IPv6 routes

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Used for IPv6 multicast forwarding cache

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Used for IPv4 multicast forwarding cache

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Default unicast routing table for IPv4 routes

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inet6.1
Default unicast routing table for IPv6 routes

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Used for IPv6 multicast forwarding cache

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Used for IPv4 multicast forwarding cache

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Default unicast routing table for IPv4 routes

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41. Which command allows viewing of only BGP routes?
42. The forwarding table is populated with all the routes from the routing table
43. The requirement is to redistribute ten static routes to your BGP peers, which two steps would accomplish this task?
44. You can match on a list of a protocol, prefix-term and AS path in a routing policy
45. In a firewall filter, which is a valid match criteria to match on a protocol field in the IP header?
46. Match the terminating actions of a firewall filter with its usage
Accept
Accept a packet

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Discard a packet silently, without sending an ICMP message

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Discard a packet, and send an ICMP message back to the sender

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Reject
Accept a packet

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Discard a packet silently, without sending an ICMP message

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Discard a packet, and send an ICMP message back to the sender

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Discard
Accept a packet

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Discard a packet silently, without sending an ICMP message

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Discard a packet, and send an ICMP message back to the sender

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47. What are the few functions of Routing Engine?
48. Which command is used to bring the candidate configuration back to the same level as the active configuration?
49. Any changes made to the candidate configuration are not active until the user enters which command?
50. Junos can store 50 rollbacks files from 0 to 49, which command is used to return to the configuration that was active before the last commit?

 

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