Juniper JN0-649 JNCIP-ENT Exam Practice Test Instant Access

Question 1

Referring to the exhibit, which two statements are correct? (Choose two.)

AThe host that the route is associated with is multihomed to two leaf nodes.

BThe route is a Type 1 EVPN route.

CThe route is a Type 2 EVPN route.

DThe host that the route is associated with is single-homed to one leaf node.

Answer : C, D

Question 2

Which two statements are correct about the deployment of EVPN-VXLAN on QFX Series devices? (Choose two.)

AType 1 route advertisements always have the single-active flag set to 1.

BJunos OS supports underlay replication for BUM traffic forwarding.

CJunos OS supports ingress replication for BUM traffic forwarding.

DType 1 route advertisements always have the single-active flag set to 0.

Answer : C, D

BUM Traffic Forwarding

Junos devices that use MPLS encapsulation for EVPNs can only use ingress replication at this time.

Ingress replication means, to flood traffic to remote PE routers, the traffic has to be replicated, once for each remote PE router.

The EVPN label for this BUM traffic is learned per PE router from the route type 3, inclusive multicast Ethernet tag route.

This table shows the format of the inclusive multicast Ethernet tag route.

All-Active Redundancy (4)

This diagram shows the format of the type 1 route, A-D route per ES. The split horizon label is advertised as part of an extended community attached to the type 1 route. The split horizon label is also called the ESI label. The extended community also indicates what type of redundancy mode is used for this given ESI: single-active represented by binary 1 or active-active represented by binary 0.

Question 3

You are implementing the route summarization feature of OSPF.

Which two results do you achieve in this scenario? (Choose two.)

AIt helps in migrating to future multi-area OSPF network designs.

BIt reduced the routing table size, enabling devices to store and process less information.

CIt reduces the impact of topology changes on a device.

DIt provides optimal routing in the network.

Answer : B, C

OSPF inter-area route summarization reduces the routing information exchanged between areas and the size of routing tables, and improves routing performance. OSPF inter-area route summarization enables an ABR to summarize contiguous networks into a single network and advertise the network to other areas.

Question 4

You are asked to establish full connectivity between all devices in the BGP network.

Referring to the exhibit, which two configuration changes will allow BGP route advertisements? (Choose two.)

AOn R2, include the loops 2 statement at the [edit protocols bgp family inet unicast] hierarchy.

BOn R1 and R3, include the loops 2 statement at the [edit protocols bgp family inet unicast] hierarchy.

COn R1 and R3, include the advertise-peer-as statement at the [edit protocols bgp group external] hierarchy.

DOn R2, include the advertise-peer-as statement at the [edit protocols bgp group external] hierarchy.

Answer : B, D

https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/advertise-peer-as-edit-protocols-bgp.html

Question 5

Your organization has recently acquired another company. You must carry all of the company's existing VLANs across the corporate backbone to the existing branch locations without changing addressing and with minimal configuration.

Which technology will accomplish this task?

AQ-in-Q all-in-one bundling

BPVLAN isolated VLAN

CMVRP registration normal

DEVPN-VXLAN anycast gateway

Answer : A

Question 6

A BGP network has been designed to provide resiliency and redundancy to a multihomed customer network.

Which two statements are correct in this scenario? (Choose two.)

ABoth the next hops will be used to forward traffic to R2.

BA routing policy will be required to forward traffic to both next hops.

CThe TTL value of 1 is set to limit the scope of the EBGP session.

DThe ttl statement must be configured to accommodate peering to a loopback address of a directly connected peer.

Answer : B, D

Question 7

A user is attempting to watch a high-definition video being streamed from the media server 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?

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

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

CAdjust the scheduler-map to support a higher transmit rate.

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

Answer : A

transmit rate is set on the scheduler, BA and classifier do not have transmit rate. scheduler-map=maps schedulers to fwd classes

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