JN0-103 Online Training Archives

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1. Which command verifies configuration syntax without applying the changes?

commit confirmed

commit check

commit comment

commit and-quit

2. By default, which character indicates the UNIX shell prompt?

3. You are considering an upgrade from 19.1R1 and want to ensure that only bug fixes are included.

Which two software versions should you consider in this situation? (Choose two.)

19.3R1-S1

19.3R2

19.1R3

19.1R1-S2

4. Which two statements are true about static routes in the Junos OS? (Choose two.)

Static routes remain in the routing table until you remove them or until they become inactive.

Static routes must have a next hop defined.

Static routes are learned by neighboring devices and added to their routing tables.

Static routes are defined at the [edit routing-instances] hierarchy.

5. When multiple users are editing the configuration on a Junos device, what is the default behavior when a user issues a commitcommand?

All valid configuration changes made by all users will take effect.

The user's configuration changes are committed; other users' configuration changes are still pending.

The user will receive an error message disallowing a commit of the configuration.

The user's configuration changes are committed; other users will be exited from configuration mode.

6. Routing policies contain which two types of statements? (Choose two.)

then

from

default

and

7. You are connected to your Junos device using an SSH connection to the fxp0 interface. No other interfaces are currently configured beyond their default settings. You commit a configuration that makes the fxp0 interface unreachable from your management network.

In this scenario, how would you re-establish communication with the device?

Connect to the console of the device.

Establish an SSH connection to the loopback interface.

Power off and power on the device.

Unplug the network cable and plug it back in.

8. Referring to the exhibit, which command will cause this event message?

request system halt

request system logout

request system recover

request system commit

9. What are two benefits realized by the disaggregated Junos OS? (Choose two.)

There is increased flexibility to use different control plane versions.

The Junos VM becomes hardware-independent and can be deployed on any hypervisor without modification.

The architecture facilitates programmability through provisioning the control plane, the data path, and the platform APIs.

The platform drivers and forwarding engine are removed from the control plane to increase performance.

10. Which two features are implemented on the Packet Forwarding Engine? (Choose two.)

firewall filters

chassis management

class of service

routing protocol updates

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11. Referring to the exhibit, which parameter at the end of the command would provide information for troubleshooting purposes?

no-timestamp

extensive

print-ascii

no-resolve

12. Which parameter of the monitor trafficcommand should be used with caution when considering storage space on a Junos device?

write-file

layer2-headers

extensive

detail

13. Which two commands would you use to reset the candidate configuration to the active configuration? (Choose two.)

rollback 0

rollback 2

rollback 1

rollback

14. Which two statements are true regarding dynamic routing? (Choose two.)

Participating devices dynamically learn routing information from each other.

Dynamic routing requires more administrative overhead than static routing.

Dynamic routing allows a device to automatically reroute traffic around a failure.

Dynamic routing is used when absolute control of routing parameters is necessary.

15. Referring to the exhibit, which dynamic routing protocol would be used for this topology?

IGMPv3

RIPng

RIP

OSPFv2

16. Referring to the exhibit, what happens to a packet that has a destination address of 172.17.0.1?

The packet is forwarded to the next hop of the management network.

The packet is rejected and an ICMP network unreachable message is sent to the source address.

The packet is silently discarded.

The packet is forwarded to the next hop defined in the default route.

17. You notice that the terms in your firewall filter are not in the correct order.

What would solve this problem?

Use the next term action to force an evaluation of the next term.

Use the insert command to reorder the terms within the filter.

Use the count parameter to ensure that the terms are evaluated correctly.

Use the reject action to change the action of the filter.

18. Which command will show files stored in the /var/home/lab directory?

[email protected]> file show

[email protected]> file list

[edit][email protected]# rollback?

[email protected]> ls

19. Which two statements are true about the default behavior of Junos routing policies? (Choose two.)

Routing policies control the flow of routing information going to and from the forwarding table.

Routing policies control the flow of routing information going to and from the routing table.

Routing policies can export active and inactive routes.

Routing policies can export only active routes.

20. How does the PFE determine how to forward transit traffic?

The PFE determines network destinations itself based on the RE's routing table.

The PFE uses the forwarding table provided by the R

The PFE performs a destination lookup based on its own routing table.

The PFE uses the routing table provided by the R

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21. Referring to the exhibit, what information is provided about the route to 192.168.47.0/24? (Choose two.)

There are two active routes to 192.168.47.0/24.

There is a single active route to 192.168.47.0/24.

There are two next hops available to 192.168.47.0/24.

There is a single next hop available to 192.168.47.0/24.

22. Depending on the device type, Junos is built upon which two OS kernels? (Choose two.)

NetBSD

FreeBSD

Linux

OpenBSD

23. Which two statements describe PFE functions? (Choose two.)

The PFE stores a local copy of the Layer 2 and Layer 3 forwarding tables.

The PFE provides access to the CLI and J-Web.

The PFE stores the master copy of the Layer 2 and Layer 3 forwarding tables.

The PFE implements rate limiting using policers.

24. Referring to the exhibit, which logical interface is able to forward IP traffic?

ge-0/0/2.0

ge-0/0/0

ge-0/0/1.0

ge-0/0/2

25. In your configuration, an interface contains multiple IP addresses belonging to the same subnet. You want to identify the IP address to use for packets sent to hosts on the same subnet.

Which parameter would you use to accomplish this task?

patch

primary

preferred

relative

26. What are two modes of unicast reverse path forwarding? (Choose two.)

strict

high

low

loose

27. You successfully established a BGP session with a peer, but do not see any routes learned from the peer.

What would cause this problem?

A routing policy is blocking BGP from learning the routes.

A security policy is blocking BGP from learning the routes.

Unicast reverse-path-forwarding is blocking BGP from learning the routes.

The firewall filter is blocking BGP from learning the routes.

28. What are two services performed by the Packet Forwarding Engine? (Choose two.)

to process transit traffic

to handle processes that control the device's interfaces

to maintain the routing tables

to implement stateless firewall filtering

29. Which command displays all IPv4 routes in the default routing instance?

show route table inet.1

show route table inet6.0

show route table inet.2

show route table inet.0

30. Which statement is true about the orlonger route-filter match type?

All routes within the specified prefix that are longer than or equal to the given prefix are considered a match.

All routes within the specified prefix that are longer or equal to the given prefix up to a defined acceptable prefix length are considered a match.

All routes within the specified prefix that are longer than the given prefix up to a defined acceptable prefix length are considered a match.

All routes within the specified prefix that are longer than the given prefix are considered a match.