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JN0-102 Exam Questions - Online Test


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Q1. You are asked to configure real-time performance monitoring (RPM) between two Junos devices to track traffic in your network. 

Which two application traffic types can you track? (Choose two.) 

A. ICMP 

B. SNMP 

C. TCP 

D. HTTPS 

Answer: A,C 

84. You are troubleshooting a routing issue and need to check the hop-by-hop path to the 

10.10.10.10 destination. 

Which three commands would display the path? (Choose three.) 

A. user@router# traceroute 10.10.10.10 

B. user@router> ping record-route 10.10.10.10 

C. user@router>traceroute 10.10.10.10 

D. user@router# run traceroute 10.10.10.10 

E. user@router# ping record-route 10.10.10.10 

Q2. What are three types of routing instances? (Choose three.) 

A. VPN 

B. virtual-router 

C. policy 

D. VRF 

E. forwarding 

Answer: B,D,E 

Q3. What is a valid option when using the ping command? 

A. packet loss B. packet size 

C. CRC 

D. TCP port 

Answer:

Q4. Which statement is true about the forwarding plane? 

A. The forwarding plane is the intelligence of the platform. 

B. The forwarding plane is based on an X86 architecture. 

C. The forwarding plane maintains the routing tables, bridging table, and primary forwarding table. 

D. The forwarding plane implements policers, stateless firewall filters, and class of service. 

Answer:

Q5. What are three physical interface properties? (Choose three.) 

A. payload scrambling 

B. virtual circuit identifier 

C. FCS 

D. link speed 

E. IP address 

Answer: A,C,D 

Q6. Which command do you use to display the messages seen during the last system boot? 

A. show system boot-messages 

B. show chassis messages 

C. show file system boot-messages 

D. show boot-log messages 

Answer:

Q7. Which two statements about MPLS label-switched paths (LSPs) are true? (Choose two.) 

A. LSPs are bidirectional. 

B. LSPs are unidirectional. 

C. LSPs must follow the IGP's shortest path. 

D. LSPs can follow paths other than the IGP's shortest path. 

Answer: B,D 

Q8. -- Exhibit --

user@router# run show interfaces terse Interface Admin Link Proto Local fe-0/0/0 up up fe-0/0/0.0 up upinet 10.0.39.2/24 iso mpls fe-0/0/1 up up fe-0/0/1.0 up upinet 10.0.18.2/24 fe-0/0/1.5 down up inet 10.0.19.2/24 -- Exhibit --

An administrator is unable to ping any address on the 10.0.19.0/24 subnet. To identify the problem, the administrator uses the command shown in the exhibit. 

Which step should be taken to solve the problem? 

A. Check the physical cable. 

B. Issue the command activate interfaces fe-0/0/1.5 . 

C. Issue the command delete interfaces fe-0/0/1.5 disable. 

D. Reconfigure the IP address. 

Answer:

Q9. -- Exhibit --Amnesiac (ttyu0) login: 

-- Exhibit --

Which statement is correct about the information shown in the exhibit? 

A. The factory-default configuration is running on the device. 

B. The Junos OS was corrupted and did not boot correctly. 

C. The device was recently upgraded to a newer version of the Junos OS. 

D. The device's memory has been corrupted and no file system is present after a reboot. 

Answer:

Q10. You need to control SSH, HTTP, and Telnet access to an MX240 router through any interface. You have decided to use a firewall filter. 

How should you apply the firewall filter? 

A. as an outbound filter on interface fxp0 

B. as an outbound filter on interface lo0 

C. as an inbound filter on interface fxp0 

D. as an inbound filter on interface lo0 

Answer: