Juniper Juniper Certifications JN0-681 Questions & Answers

• Question 41:

  What happens when a packet is encapsulated by a VXLAN before being placed in the overlay?

  A. The QoS markings are placed in the VXLAN header.

  B. The VLAN-ID is placed in the VXLAN header.

  C. A VNI that maps to the VLAN-ID is placed in the VXLAN header.

  D. The TTL is decremented by two and placed in the VXLAN header.

  Correct Answer: C

• Question 42:

  Referring to the exhibit, Host 1 and Host 3 have exchanged traffic.

  

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  In this scenario, which statement is true?

  A. Leaf 2 does not learn Host 1's MAC address until Host 1 and Host 2 send traffic to each other.

  B. Leaf 2 learns Host 1's MAC address through periodic updates from Spine 2.

  C. Leaf 2 learns Host 1's MAC address when Host 3 learns Host 1's MAC address.

  D. Leaf 2 learns Host 1's MAC address when Leaf 1 queries Host 1.

  Correct Answer: D

• Question 43:

  You want to configure redundant Layer 3 gateways.

  In this scenario, which two Juniper best practices would accomplish this task? (Choose two.)

  A. configuring both IRB interfaces manually with the same MAC address.

  B. allowing Junos to dynamically create the virtual IP address of the IRB interface.

  C. configuring both IRB interfaces manually with the same IP address.

  D. allowing Junos to dynamically create the virtual MAC address of the IRB interface.

  Correct Answer: CD

• Question 44:

  What are three functions supported by the Contrail Command user interface? (Choose three.)

  A. enabling VM-to-BMS bridging

  B. onboarding of an IP Fabric

  C. configuring management domains

  D. integrated syslog collector

  E. creating virtual networks

  Correct Answer: CDE

• Question 45:

  You are designing an EBGP IP fabric for a multi-site data center. In this scenario, which two statements are true? (Choose two.)

  A. Public AS numbers must be used.

  B. Different AS numbers should be used on all devices.

  C. The same AS number should be used on all devices across all data centers.

  D. Private AS numbers can be used.

  Correct Answer: BD

• Question 46:

  An EVPN-signaled VXLAN overlay has been deployed in the network shown in the exhibit. Host1 is a bare metal server, and is dual-homed to the network. The IP addresses 10.1.1.1/24 and 10.1.1.2/24 are assigned to the same physical NIC, and no virtualization is configured on the server.

  

  In this scenario, which two statements are true? (Choose two.)

  A. The MAC address associated with 10.1.1.1/24 and 10.1.1.2/24 will be the same when advertised to leaf3.

  B. The connection from host1 to devices leaf1 and leaf2 must be configured as a LAG.

  C. Traffic from IP address 10.1.1.1/24 must traverse the VXLAN network to reach IP address 10.1.1.2/24.

  D. The ESI assigned to the leaf1-host1 link must be the same as the ESI assigned to the leaf2-hostl link.

  Correct Answer: BD

• Question 47:

  You are implementing perimeter security for your data center. You need to inspect all traffic at Layer 7 and ensure the failure of a port or device will not result in an interruption to traffic flows.

  In this scenario, which design would satisfy these requirements?

  A. SRX using LAG

  B. MX with MC-LAG

  C. QFX Virtual Chassis

  D. SRX chassis cluster

  Correct Answer: D

• Question 48:

  Host1 and host2 are connected to an EVPN signaled VXLAN overlay, and must have Layer 3 connectivity. The VNI and VLAN assignments are shown in the exhibit.

  

  In this scenario, which two statements are true? (Choose two.) A. The ESI assigned to the host1 link will be different from the ESI assigned to the host2 link.

  B. The VNI assigned to the host1 link must be the same as the VNI assigned to the host2 link.

  C. A Layer 3 gateway can be configured on the spine devices.

  D. A Layer 3 gateway can be configured on the leaf devices.

  Correct Answer: CD

• Question 49:

  Referring to the exhibit, DC1 and DC2 have a DCI across a service provider WAN connection. Host1 in DC1 must have Layer 2 connectivity to host2 in DC2. A VXLAN tunnel must be created between VTEP1 and VTEP2.

  

  In this scenario, which statement is true?

  A. The service provider WAN connection cannot be an MPLS-based WAN connection.

  B. VXLAN Layer 3 gateway must be provisioned at the Super Spine layer.

  C. A route to the loopback address on VTEP2 must be present on VTEP1.

  D. VTEP1 and VTEP2 must peer using IBGP.

  Correct Answer: C

• Question 50:

  A company wants to expand their hosting business and is seeking solutions to support multiple tenants. Each tenant should be able to configure their own logical interfaces. Also, based on customer needs, all routing features must be supported.

  What will satisfy the customer's requirements?

  A. routing instances

  B. tenant systems

  C. logical systems

  D. bridge domains

  Correct Answer: A