Juniper Juniper Certifications JN0-347 Questions & Answers

• Question 111:

  Which statement describes optional transitive BGP attributes?

  A. They must be supported in all BGP implementations, but do not have to be included in every BGP update.

  B. If they are not recognized, they are ignored and not passed to other peers.

  C. They must be supported by all BGP implementations and must be included in every BGP update.

  D. Although not required, they should be passed along, unchanged to other BGP peers when included.

  Correct Answer: D

• Question 112:

  Click the Exhibit button.

  

  Referring to the exhibit, which two statements are correct? (Choose two.)

  A. All traffic destined to the 172.25.11.0/24 subnet will be discarded.

  B. SSH traffic received from host IP 172.25.11.2 will be accepted.

  C. Any traffic not matched by one of the terms will be discarded.

  D. ICMP echo requests destined to 172.25.11.10 will be accepted.

  Correct Answer: CD

• Question 113:

  Which two values are used to generate a bridge ID when using STP? (Choose two.)

  A. system MAC address

  B. bridge priority

  C. port identifier

  D. loopback IP address

  Correct Answer: AB

• Question 114:

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

  

  A. generate.

  B. martian

  C. aggregate

  D. static

  Correct Answer: C

  From the exhibit se see: Contributing Routes Note: Route aggregation allows you to combine groups of routes with common addresses into a single entry in the routing table. This decreases the size of the routing table as well as the number of route advertisements sent by the routing device. An aggregate route becomes active when it has one or more contributing routes. A contributing route is an active route that isa more specific match for the aggregate destination.

• Question 115:

  Which two statements are true about a unified ISSU? (Choose two.)

  A. It requires that Bidirectional Forwarding Detection be disabled.

  B. It is only supported on platforms with redundant control planes.

  C. It is only supported on platforms with redundant power supplies.

  D. It requires that graceful Routing Engine switchover be enabled.

  Correct Answer: BD

  B: Recent development work by many router vendors has focused on an effort to provide hitless control plane switchovers, which means keeping the control plane states in sync between the active and standby control planes prior to a switchover. Many consider this capability to be a prerequisite to delivering ISSU. Hitless control plane switch overs are usually implemented using the same version of code on both active and standby control plane components. However, ISSU design additionally requires different software versions running on active and standby control plane components.

  D: Unified ISSU is supported only on dual Routing Engine platforms. In addition, the graceful Routing Engine switchover (GRES) and nonstop active routing (NSR) must be enabled. https://www.juniper.net/ documentation/en_US/junos15.1/topics/reference/requirements/issu-system-requirements.html

• Question 116:

  What information is included in the DHCP snooping database? (Choose two.)

  A. client MAC address

  B. DHCP server address

  C. DHCP options

  D. VLAN

  Correct Answer: AD

  When DHCP snooping is enabled, the lease information from the server is used to create the DHCP snooping table, also known as the binding table.

  The table shows current IP-MAC bindings, as well as lease time, type of binding, names of associated VLANs, and associated interface.

• Question 117:

  Host-1 was recently added in the network and is attached to ge-0/0/10 on Switch-A. Host-1 is powered on and has its interface configured with default Layer 2 settings and an IP address on the 172.17.12.0/24 IP subnet. Host-1's MAC address is not shown in Switch-A's bridging table. What are three explanations for this state? (Choose three.)

  A. The ge-0/0/10 interface is configured as an access port.

  B. The ge-0/0/10 interface is not operationally or administratively up.

  C. The ge-0/0/10 interface does not have an associated IRB.

  D. The ge-0/0/10 interface has not received any traffic from Host-1.

  E. The ge-0/0/10 interface is configured as a trunk port.

  Correct Answer: BCD

  B: MAC learning messages received with errors include:

  Interface down--The MAC address is learned on an interface that is down. C: To configure the MAC

  address of an IRB interface Etc.

• Question 118:

  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?

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

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

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

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

  Correct Answer: D

• Question 119:

  Which statement is true about load balancing of equal cost paths?

  A. A load-balancing policy must be configured under the policy-options hierarchy.

  B. The route preference parameter must be manually set to the same value.

  C. The maximum-paths parameter must be configured under the routing-options hierarchy.

  D. Traffic is balanced across equal cost paths by default.

  Correct Answer: D

• Question 120:

  Click the Exhibit button. Referring to the exhibit, which router will be selected as the DR?

  

  A. R1

  B. R5

  C. R4

  D. R3

  Correct Answer: D

  Note: The higher the priority value, the greater likelihood the routing device will become the designated router. By default, routing devices have a priority . A priority of 0 marks the routing device as ineligible to become the designated router. A priority of 1 means the routing device has the least chance of becoming a designated router. A priority means the routing device is always the designated router.