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Juniper JN0-649 Enterprise Routing and Switching Professional (JNCIP-ENT) Exam Practice Test

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Enterprise Routing and Switching Professional (JNCIP-ENT) Questions and Answers

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Question 1

A modified deficit round-robin scheduler is defined by which three variables? (Choose three.)

Options:

A.

priority

B.

WRED

C.

transmit rate

D.

Layer 3 fields

E.

buffer size

Question 2

You are deploying IP phones in your enterprise networks. When plugged in, the IP phones mustbe automatically provided with the correct VLAN ID needed for sending voice traffic to the EX Series switches.

In this scenario, which two solutions are required to accomplish this task? (Choose two.)

Options:

A.

Enable LLDP-MED on appropriate access interfaces.

B.

Create two VLANs and assign them as VLAN members to the appropriate access interfaces.

C.

Enable the voice VLAN feature with the appropriate access interfaces and VLAN ID for voice traffic.

D.

Use LLDP on appropriate interfaces.

Question 3

You are asked to troubleshoot voice quality issues on your newly implement VoIP network. You notice that the voice packets are being dropped. You haveverified that the packets are correctly marked for expedited forwarding queue.

Referring to the exhibit, what must you configure to solve the problem?

Options:

A.

You must configure a multifield classifier to put the VoIP traffic in the correctqueue.

B.

You must configure a rewrite rule to ensure that the traffic is scheduled properly in the device.

C.

You must configure a scheduler to allocate bandwidth to the expedited forwarding queue.

D.

You must configure a policer to ensure that the queueis not being starved.

Question 4

Your enterprise network uses routing instances to support multitenancy. Your Junos devices use BGP to peer to multiple BGP devices. You must ensure that load balancing is achieved within the routing instance.

Which two statements would accomplish this task? (Choose two.)

Options:

A.

Configure the multipath option at the [edit protocols bgp group neighbor] hierarchy.

B.

Configure the multipath option at the [edit protocols bgp group] hierarchy.

C.

Configure a load-balance per-packet policy and apply it at the [edit routing-options forwarding-table] hierarchy.

D.

Configure the multipath option at the [edit routing-instances routing-options] hierarchy.

Question 5

You are asked to establish interface level authentication for users connecting to your network. You must ensure that only corporate devices, identified by MAC addresses, are allowed to connect and authenticate. Authentication must be handled by a centralized server to increase scalability.

Which authentication method would satisfy this requirement?

Options:

A.

MAC RADIUS

B.

captive portal

C.

802.1X with single-secure supplicant mode

D.

802.1X with multiple supplicant mode

Question 6

A user is attempting to watch a high-definition video being streamed from the mediaserver over the network. However, the user complains that the experienced video quality is poor. While logged on to router B, a Juniper Networks device, you notice that video packets are being dropped.

In this scenario, what would solve this problem?

Options:

A.

Adjust the scheduler for the expedited-forwarding forwarding class to support a higher transmit rate.

B.

Adjust the expedited-forwarding BA classifier to router B's ge-0/0/0 interface to support a higher transmit rate.

C.

Adjust thescheduler-map to support a higher transmit rate.

D.

Adjust the expedited-forwarding BA classifier on router B's ge-0/0/1 interface to support a higher transmit rate.

Question 7

Your network has an unmanaged switch between the hosts and your EX Series switch. After the traffic enters theEX Series switch, each host must be on a separate VLAN.

How would you accomplish this task?

Options:

A.

Configure an input firewall filter on interface ge-0/0/3 to match the source MAC or IP address of the hosts to assign the VLANs.

B.

Configure an output firewall filter on interface ge-0/0/1 to match the destination MAC or IP address of the hosts to assign the VLANs.

C.

Configure interface ge-0/0/3 to a mode trunk to assign the VLANs.

D.

Configure VSTP on interface ge-0/0/1 to assign the VLANs.

Question 8

Your enterprise network is running BGP VPNs to support multitenancy. Some of the devices with which you peer BGP do not support the VPN NLRI. You must ensure that you do not send BGP VPN routes to the remote peer.

Which two configuration steps will satisfy this requirement? (Choose two.)

Options:

A.

Configure an import policy on the remote peer to reject the routes when they are received.

B.

Configure an export policy on the local BGP peer to reject the VPN routes being sent to the remote peer.

C.

Configure a route reflector for the VPN NLRI.

D.

Configure the apply-vpn-export feature on the local BGP peer.

Question 9

In OSPF, how does a router ensure that LSAs advertised to a neighboring router are received?

Options:

A.

LSA flooding guarantees that all routers will receive them successfully.

B.

LSAs are sent over a TCP connection.

C.

LSAs are acknowledged by the neighboring router.

D.

LSAs are advertised with an acknowledgement bit.

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