Juniper Juniper Certifications JN0-348 Questions & Answers

• Question 51:

  You added a new ESXi host connected to port ge-0/0/1. One of the VMs configured with VLAN 10 is not reachable from any other device on the switch. To troubleshoot, you decide to verify if the VM's MAC address is learned properly under VLAN 10.

  Which command would you use in this scenario?

  A. show ethernet-switching table vlan-id 10

  B. show interfaces ge-0/0/1 detail

  C. show vlans 10

  D. monitor interface ge-0/0/1

  Correct Answer: A

• Question 52:

  You are adding a new EX4300 member switch to your existing EX4300 Virtual Chassis. However, the new member is not running the same Junos version as the other members.

  By default, what is the expected behavior in this scenario?

  A. the Virtual Chassis will transition into a split brain situation between the existing master Routing Engine and the switch running the different version.

  B. The new switch will automatically pull the correct version from the master Routing Engine and perform the necessary upgrade.

  C. The new switch will be assigned a member ID and then placed in an inactive state.

  D. The new switch is not recognized by the Virtual Chassis.

  Correct Answer: C

• Question 53:

  What are the three possible port states when using RSTP? (Choose three.)

  A. forwarding

  B. learning

  C. discarding

  D. listening

  E. tagging

  Correct Answer: ABC

• Question 54:

  What are two characteristics of IS-IS CSNPs? (Choose two.)

  A. IS-IS CSNPs contain header information for all link-state PDUs.

  B. IS-IS CSNPs are used to request a copy of a missing link state PDU.

  C. IS-IS CSNPs are used to maintain the link-state database synchronization.

  D. IS-IS CSNPs contain header information for specific requested link-state PDUs.

  Correct Answer: AC

• Question 55:

  What are two methods for reducing the size of an OSPF link-state database? (Choose two.)

  A. Use unique router IDs where possible.

  B. Use identical link metrics where possible.

  C. Use point-to-point interface types where possible.

  D. Use stub areas where possible.

  Correct Answer: CD

• Question 56:

  Click the Exhibit button.

  

  Referring to the exhibit, which router becomes the OSPF DR when all routers are powered on at the same time?

  A. R3

  B. R4

  C. R1

  D. R2

  Correct Answer: D

• Question 57:

  Click the Exhibit button.

  

  Based on the output shown in the exhibit, which statement is correct?

  A. This switch has been elected as the root bridge

  B. This switch has a bridge priority of 32k

  C. The ge-0/0/15 interface is using the default port cost

  D. The ge-0/0/9 interface is using the default priority value

  Correct Answer: A

• Question 58:

  In which two STP states is a port active and a MAC address learned? (Choose two.)

  A. blocking

  B. forwarding

  C. disabled

  D. learning

  Correct Answer: BD

• Question 59:

  You are enabling dynamic ARP inspection on an EX4300 switch.

  Which service is enabled by default in this scenario?

  A. DHCP snooping

  B. persistent MAC learning

  C. MAC limiting

  D. IP Source Guard

  Correct Answer: A

• Question 60:

  Which two sequences correctly describe the processing order of firewall filters on an EX Series switch? (Choose two.)

  A. router filter > VLAN filter > port filter > transmit packet

  B. port filter > VLAN filter > router filter > transmit packet

  C. receive packet > port filter > VLAN filter > router filter

  D. receive packet > router filter > VLAN filter > port filter

  Correct Answer: AC