Juniper JNCIP-ENT JN0-648 Questions & Answers

• Question 11:

  You are deploying IP phones to a customer site. The IP phones will be installed to share a common access port with the user's desktop computer. You are required to provide a mechanism to place user data traffic and voice traffic in different VLANs for class-of-service application.

  How would you implement this solution?

  A. Configure flexible VLAN tagging on the user ports with the data and voice VLANs as members.

  B. Apply a multifield classifier on the access ports that assigns voice packets to the assured-forwarding class, based on the IP phone manufacturer's MAC OUI.

  C. Configure the IP phones to label voice traffic with the DSCP of code point and apply a BA classifier to the access ports to classify voice traffic.

  D. Configure VLAN tagging on the IP phones and use the voice VLAN feature on the access ports to assign tagged frames to the voice VLAN and untagged frames to a data VLAN.

  Correct Answer: D

• Question 12:

  Which three types of ports are used for Junos Fusion Enterprise? (Choose three.)

  A. extended port

  B. authenticated port

  C. cascade port

  D. uplink port

  E. designated port

  Correct Answer: ACD

• Question 13:

  You are implementing 802.1X access control in your network of EX Series switches. You have some older client devices connecting to your network which do not support 802.1X.

  Which statement is true regarding the older devices?

  A. By default, the supplicant will send EAP messages until it reaches a predefined limit, after which it begins to forward traffic.

  B. By default, the supplicant will send EAP messages and keep the port in an unauthorized state.

  C. By default, the authenticator will send EAP messages until it reaches a predefined limit, after which it begins to forward traffic.

  D. By default, the authenticator will send EAP messages and keep the port in an unauthorized state.

  Correct Answer: A

• Question 14:

  When redistributing IGP routes into BGP, what information is used by default on Junos platforms to determine the BGP route's MED attribute value?

  A. the IGP Metric

  B. routing information base

  C. the IGP route preference

  D. route protocol source

  Correct Answer: A

• Question 15:

  Which two statements are true regarding bidirectional PIM? (Choose two.)

  A. Forwarding paths can be suboptimal.

  B. Devices only store group specific entries.

  C. It uses multicast tunneling to forward traffic.

  D. It eliminates the need for an RP.

  Correct Answer: AB

• Question 16:

  Click the Exhibit button.

  

  You are implementing CoS for a custom application that is labeling its packets with DSCP code-point 101111. You have applied the configuration shown in the exhibit, but note that while some custom application traffic ingressing on ge-0/0/1 transits the SRX Series device successfully, packets ingressing all other ge-* interfaces are being dropped.

  Which action should you take to solve this problem?

  A. Apply the rate-limit-efpolicer to all ge- interfaces.

  B. Remove the BA classifier from all ge- interfaces.

  C. Configure a scheduler and scheduler map for expedited-forwarding and apply to all interfaces.

  D. Modify the BA classifier to assign code point 101111 to loss priority low.

  Correct Answer: D

• Question 17:

  Click the Exhibit button.

  

  YourNet is learning the 210.210.40.0/24 route from Provider A and Provider B. YourNet would like to forward traffic destined to the 210.210.40.0/24 network using Provider B.

  Referring to the exhibit, how would you accomplish this task?

  A. Add the well-known no-export community to the routes learned through R2.

  B. Add the well-known no-export community to the routes learned through R1.

  C. Apply an export policy to R2's IBGP peers to set a higher local preference.

  D. Apply an export policy to R1's IBGP peers to set a higher local preference.

  Correct Answer: C

• Question 18:

  You are deploying IP phones in your Layer 2 network and are asked to ensure that the switch sends VLAN and CoS information to the IP phones automatically.

  In this scenario, which protocol should be used?

  A. PoE+

  B. LLDP

  C. LLDP-MED

  D. PoE

  Correct Answer: C

• Question 19:

  You are designing a multicast topology to support IPv4 IPTV broadcasts in your organization. The design should support multiple multicast senders with overlapping group addresses while preventing interference between them. Client devices currently do not support IGMPv3.

  Which approach would fulfill these requirements?

  A. Implement MLD.

  B. Assign group addresses in the 224/4 range and implement PIM-DM.

  C. Implement PIM-SM and SSM with SSM maps to support IGMPv2 clients.

  D. Implement bidirectional PIM.

  Correct Answer: B

• Question 20:

  You are enabling MSTP in your Layer 2 network to prevent loops.

  In this scenario, which three parameters must match on all switches in the network? (Choose three.)

  A. bridge priority

  B. revision level

  C. MSTI-to-VLAN mapping

  D. configuration name

  E. max age

  Correct Answer: BCD