Juniper JNCIS-ENT JN0-347 Questions & Answers

• Question 1:

  Click the Exhibit button.

  There are dynamically and statically routed networks attached to the ge-0/0/1 interface on R1. You only

  want the dynamically learned routes to show up in routing tables for R2 and R3, but the statically routed

  networks are also appearing. Those networks should only be seen by the R1 device.

  Which actions would solve the problem?

  A. Remove the IP address from interface ge-0/0/1.

  B. Add the no-readvertise parameter to the static routes.

  C. Create a routing policy for all routing protocols to drop routes learned from interface ge-0/0/1.

  D. Place interface ge-0/0/1 into its own routing instance.

  Correct Answer: B

• Question 2:

  Which two statements are true about DIS elections in IS-IS? (Choose two.)

  A. If a priority tie occurs, the router with the lower subnetwork point of attachment (SNPA) value becomes the DIS.

  B. If a priority tie occurs, the router with the higher subnetwork point of attachment (SNPA) value becomes the DIS.

  C. The router with the lower priority value becomes the DIS.

  D. The router with the higher priority value becomes the DIS.

  Correct Answer: BD

  In IS-IS, deterministic DIS election makes the possibility of predicting the router that will be elected as DIS

  from the same set of routers.

  The router advertising the numerically highest priority wins, with numerically highest MAC address, also

  called a Subnetwork Point of Attachment (SNPA), breaking the tie.

• Question 3:

  Referring to the exhibit, which three actions would summarize these routes to a BGP peer? (Choose three.)

  

  A. Create a policy that accepts the more specific contributing routes.

  B. Create a route to 10.200.16.0/21 with a next hop .16.36.1 under the [edit routing- options static] hierarchy.

  C. Create a policy that rejects the more specific contributing routes.

  D. Create a policy to accept aggregate routes.

  E. Create a 10.200.16.0/22 route under the [edit routing-options aggregate] hierarchy.

  Correct Answer: CDE

• Question 4:

  Click the Exhibit button. Referring to the exhibit, what does the asterisk (*) indicate?

  

  A. The router received this entry.

  B. This entry is stale.

  C. This entry is new.

  D. The router originated this entry.

  Correct Answer: C

  The asterisk (*) next to one of the block entries corresponds to the active route that is used for new traffic. The term 'new traffic' corresponds to a single packet or an entire flow to a destination, depending on the type of switching configured.

• Question 5:

  Which three statements are correct about the voice VLAN feature? (Choose three.)

  A. It allows the access port to accept tagged voice and untagged data packets.

  B. It allows you to apply independent CoS actions to data and voice packets.

  C. It can be used with LLDP-MED to dynamically assign the VLAN ID value to IP phones.

  D. It allows trunk ports to accept tagged voice and untagged data packets.

  E. It must use the same VLAN ID as data traffic on a defined interface.

  Correct Answer: ABC

  A (not D): The Voice VLAN feature in EX-series switches enables access ports to accept both data (untagged) and voice (tagged) traffic and separate that traffic into different VLANs.

  B: To assign differentiated priority to Voice traffic, it is recommended that class of service (CoS) is configured prior to enabling the voice VLAN feature. Typically, voice traffic is treated with a higher priority than common user traffic. Without differentiated treatment through CoS, all traffic, regardless of the type, is subject to the same delay during times of congestion.

  C: In conjunction with Voice VLAN, you can utilize Link Layer Discovery Protocol Media Endpoint Discovery (LLDP- MED) to provide the voice VLAN ID and 802.1p values to the attached IP phones. This dynamic method associates each IP phone with the appropriate voice VLAN and assigns the necessary802.1p values, which are used by CoS, to differentiate service for voice traffic within a network.

• Question 6:

  What would be used to combine multiple switches into a single management platform?

  A. redundant trunk groups

  B. Virtual Chassis

  C. graceful Routing Engine switchover

  D. Virtual Router Redundancy Protocol

  Correct Answer: B

  Many Juniper Networks EX Series switches support the Virtual Chassis flexible, scaling switch solution. You can connect individual switches together to form one unit and manage the unit as a single chassis.

• Question 7:

  Click the Exhibit button.

  

  What would cause the status of interface ge-0/0/8 as shown in the exhibit?

  A. Interface ge-0/0/8 is physically down and is not forwarding traffic.

  B. Interface ge-0/0/8 has a firewall filter in place that is blocking traffic.

  C. Interface ge-0/0/8 is administratively disabled and is not forwarding traffic.

  D. Interface ge-0/0/8 is connected to the same LAN as one of the other ports.

  Correct Answer: D

• Question 8:

  What are three extended BGP communities? (Choose three.)

  A. Origin: 172.16.100.100:100

  B. domain-id: 192.168.1.1:555

  C. extend:454:350

  D. 172.16.90.100:888

  E. target:65000:65000

  Correct Answer: ABE

  The BGP extended communities attribute format has three fields:

  type: administrator: assigned-number. type is the type of extended community and can be either the 16-bit

  numerical identifier of a specific BGP extended community or one of these types: origin-- Identifies where

  the route originated. domain-id-- Identifies the OSPF domain from which the route originated. target-Identifies the destination to which the route is going.

  bandwidth-- Sets up the bandwidth extended community. Specifying link bandwidth allows you to distribute

  traffic unequally among different BGP paths.

  rt-import-- Identifies the route to install in the routing table. src -as-- Identifies the AS from which the route

  originated.

  You must specify an AS number, not an IP address.

• Question 9:

  A customer discovered that a significant outage was caused by an unauthorized Ethernet switching device

  attached to the network.

  In this scenario, which two actions would solve this problem? (Choose two.)

  A. Enable 802.1x.

  B. Enable persistent MAC learning.

  C. Enable dynamic ARP inspection.

  D. Enable storm control.

  Correct Answer: AB

• Question 10:

  Click the Exhibit button.

  

  Referring to the outputs shown in the exhibit, which statement is correct?

  A. The switch is the only switch in the RSTP topology.

  B. The switch's bridge priority is 4k.

  C. The switch's bridge priority is 16k.

  D. The switch is not the root bridge.

  Correct Answer: D