[Free] 2018(Jan) EnsurePass Testking Juniper JN0-643 Dumps with VCE and PDF 21-30

2018 Jan Juniper Official New Released JN0-643
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Enterprise Routing and Switching, Professional (JNCIP-ENT)

Question No: 21 – (Topic 1)

Which statement is correct about the MSTP?

  1. MSTP enables mapping multiple independent spanning tree instances onto one physical.topology

  2. MSTP enables dynamic discover or Iayer2 neighbors

  3. MSTP dynamically manages VLAN registration in the LAN

  4. MSTP uses stacked VLAN tags to extend a layer 2 Ethernet connection between

multiple sides

Answer: A

Question No: 22 – (Topic 1)

You enable the captive portal authentication method on your juniper switch. There is no guest-Vlan configured in this scenario what will happen when the RADIUS server fails to respond?

  1. Access will be allow to only VLAN 4096

  2. All access will be allowed

  3. Access will be allowed to only VLAN 1

  4. Access will not be allowed to any VLAN

Answer: D

Question No: 23 – (Topic 1)

You are attempting to configure BGP peering to a new service provider. The BGP peering state is stuck in the active state.

What are two reasons for this happening? (Choose two)

  1. the local autonomous system number is not configure

  2. the origin ID is not configure

  3. The peer IP address is incorrect

  4. The peer autonomous number is incorrect.

Answer: C

Question No: 24 – (Topic 1)

When servicing queues on an EX series switch, which two statements are true? (Choose two)

  1. By default, the class-of-service bits on a packet do not change on egress, regardless of which queue services the packet

  2. By default, the four primary queues of best effort, assured forwarding expedited

    forwarding and network control have resources assigned to them

  3. By default, only the best effort and network-control queues have resources assigned to them

  4. WHEN TRAFFIC is assigned to user defined queues the best effort queue resources are automatically divided evenly among all user#39;s configured queues to ensure all traffic get serviced.

Answer: A,C

Question No: 25 – (Topic 1)

Which statement is correct about private VLANs?

  1. multiple private VLAN instances can be configured on a single switch

  2. you can configure only one private VLAN instances per switch

  3. private VLANs can only be implemented to span more than one switch

  4. a private VLAN instance must be implemented on a single switch

Answer: B

Question No: 26 – (Topic 1)

Which two statements about VSTP on EX series switches are connect? (Choose two)

  1. All VLANS beyond the first 64 will not be supported by VSTP

  2. VSTP automatically assigns each VLAN to one spanning tree instances

  3. VSTP must be used to intemperate with MVRP

  4. VSTP must be used to intemperate with PVST

Answer: B,D

Question No: 27 – (Topic 1)

When configuring class of service. What would you use to allocate bandwidth to a forwarding class?

  1. buffer depth

  2. transmit rate

  3. bandwidth

  4. speed

Answer: B

Question No: 28 – (Topic 1)

Which 802.1x supplicant mode allows multiple supplicants to be connected to a port one requires each device to authenticate separately?

  1. single

  2. smgle secure


  4. Multiple

Answer: D

Question No: 29 – (Topic 1)

You are designing a new enterprise network using EX switches. You are asked to u management. In this scenario which two statements are correct? (Choose two)

  1. MVRP can only be enable on trunk ports

  2. Locally defined VLANS must be manually assigned to trunk ports

  3. PDU update timers are evaluated on a per interface basis

  4. MVRP supports all spanning tree versions

Answer: A,C

Question No: 30 – (Topic 1)

Each user in the office has a desktop computer and an IP telephone that share the same physical port that connects to the access switch. To provide security in the office 802 lx authentication has been turned on. Which two port access modes should be configured to allow both the desktop computer and IP telephone to connect through the network?

  1. single supplicant mode

  2. single secure supplicant mode

  3. multiple supplicant mode

  4. volP-compatibility supplicant mode

Answer: A,B

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