Juniper Juniper Certifications JN0-347 Questions & Answers

• Question 41:

  You configured a GRE tunnel that traverses a path using default MTU settings. You want t o ensure that packets are not dropped or fragmented. In this scenario, what is the maximum packet size that would traverse the GRE tunnel?

  A. 1476

  B. 1500

  C. 1400

  D. 1524

  Correct Answer: A

  The default Ethernet MTU is 1500. There is a 24 byte GRE overhead, so there remain 1476 bytes for the data packet.

• Question 42:

  Click the Exhibit button.

  

  You are monitoring your IS-IS router and issue the command shown in the exhibit. Which two statements are true in this scenario? (Choose two.)

  A. The loopback address of the local router is 5.0.0.100.

  B. The loopback address of the local router is 10.100.0.1.

  C. The name of the remote device is r1.

  D. The name of the local device is r1.

  Correct Answer: BC

• Question 43:

  Click the Exhibit button. Referring to the exhibit, what does the asterisk (*) following the ge-0/0/5.0 interface indicate?

  

  A. It indicates the interface is a trunk port.

  B. It indicates the interface is not active.

  C. It indicates the interface is an access port.

  D. It indicates the interface is active.

  Correct Answer: D

  An asterisk (*) beside the interface indicates that the interface is UP.

• Question 44:

  Click the Exhibit button. Referring to the exhibit, which type of route is displayed?

  

  A. static

  B. generate

  C. aggregate

  D. martian

  Correct Answer: C

  From the exhibit we see: 109.0.0.0/8 *[Aggregate/130]

• Question 45:

  Click the Exhibit button. Given the information shown in the exhibit, what was used to determine mastership?

  A. member uptime

  B. manually assigned role

  C. highest serial number

  D. manually assigned priority

  Correct Answer: A

  When a Virtual Chassis configuration boots, the Juniper Networks Junos operating system (Junos OS) on the switches automatically runs a master election algorithm to determine which member switch assumes the role of master. The algorithm proceeds from the top condition downward until the stated condition is satisfied.

• Question 46:

  Click the Exhibit button.

  

  You are performing network tests and notice that the Layer 3 interface in the Finance VLAN on an EX Series Pass Your Certification With Marks4sure Guarantee switch is not responding to pings. You review the device status from the console. What is causing the problem, as shown in the exhibit?

  A. There are no active physical ports in the Finance VLAN.

  B. There is no route in the routing table for the Finance VLAN Layer 3 interface.

  C. The Layer 3 interface in the Finance VLAN is administratively disabled.

  D. There are no interfaces configured in the Finance VLAN.

  Correct Answer: B

• Question 47:

  Which two statements are correct about redundant trunk groups on EX Series switches? (Choose two.)

  A. Layer 2 control traffic is permitted on the secondary link.

  B. If the active link fails, then the secondary link automatically takes over.

  C. Redundant trunk groups load balance traffic across two designated uplink interfaces.

  D. Redundant trunk groups use spanning tree to provide loop-free redundant uplinks.

  Correct Answer: AB

  A: While data traffic is blocked on the secondary link, Layer 2 control traffic is still permitted. For example, an LLDP session can be run between two switches on the secondary link.

  B: The redundant trunk group is configured on the access switch and contains two links: a primary or active link, and a secondary link. If the active link fails, the secondary link automatically starts forwarding data traffic without waiting for normal spanning-tree protocol convergence.

• Question 48:

  What is reviewed first in the BGP route selection process?

  A. the peer with the lowest IP address

  B. the route with an origin of incomplete

  C. the path with no MED value

  D. the next-hop resolution

  Correct Answer: D

• Question 49:

  Click the Exhibit button.

  

  The configuration shown in the exhibit was committed on an EX Series switch. You are notified that the

  phone using the voice VLAN does not work. You determine that voice traffic is not passing through the

  local switch.

  What should be done to solve the problem?

  A. You should add the voice VLAN as a member on the ge-0/0/8.0 interface.

  B. You should change the port mode on ge-0/0/9.0 to trunk.

  C. You should add the voice VLAN as a member on the ge-0/0/9.0 interface.

  D. You should change the voice VLAN ID to match the data VLAN ID.

  Correct Answer: A

• Question 50:

  Which two prefixes are martian routes by default? (Choose two.)

  A. 127.0.0.0/16

  B. 127.0.0.0/8

  C. 192.0.0.0/16

  D. 192.0.0.0/24

  Correct Answer: BD

  Martian addresses are host or network addresses about which all routing information is ignored. When received by the routing device, these routes are ignored. They commonly are sent by improperly configured systems on the network and have destination addresses that are obviously invalid. To view the default and configured martian routes, run the show route martians command. IPv4 Martian Addresses user@host> show route martians table inet. inet.0: 0.0.0.0/0 exact -- allowed 0.0.0.0/8 orlonger - disallowed 127.0.0.0/8 orlonger -- disallowed 192.0.0.0/24 orlonger - disallowed 240.0.0.0/4 orlonger -- disallowed 224.0.0.0/4 exact - disallowed 224.0.0.0/24 exact - disallowed inet.1: 0.0.0.0/0 exact -- allowed 0.0.0.0/8 orlonger -- disallowed 127.0.0.0/8 orlonger -- disallowed 192.0.0.0/24 orlonger -- disallowed 240.0.0.0/4 orlonger -- disallowed Etc.