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JN0-649 Sample Questions Answers

Questions 4

Which statement is correct about IS-IS?

Options:

A.

IS-IS uses areas and an autonomous system.

B.

Level 1/2 routers automatically inject a default route to the nearest Level 1 router.

C.

Level 2 routers must share the same area address.

D.

Level 1 routers route traffic between autonomous systems.

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Questions 5

Referring to the exhibit, ServerA sends a single IP packet destined to 10.0.0.127.

Which two statements correctly describe the behavior of the resulting outbound VXLAN packets that contain the original packet destined to 10.0.0.127? (Choosetwo.)

Options:

A.

Router E will replicate and send a copy of the received VXLAN packet to router D.

B.

Router C will send a VXLAN packet destined only to router D and router E.

C.

Router D will not replicate and send a copy of the received VXLAN packet to routerE.

D.

Router C will send a single VXLAN packet to one remote VTEP.

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Questions 6

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

Which technology will accomplish this task?

Options:

A.

Q-in-Q all-in-one bundling

B.

PVLAN isolated VLAN

C.

MVRP registration normal

D.

EVPN-VXLAN anycast gateway

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Questions 7

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.)

Options:

A.

OnR2, include the loops 2 statement at the [edit protocols bgp family inet unicast] hierarchy.

B.

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

C.

On R1 and R3, include the advertise-peer-as statementat the [edit protocols bgp group external] hierarchy.

D.

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

Questions 8

You have scheduled maintenance operationsfor one of the devices in your OSPF network.

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

Options:

A.

R1 does not participate in OSPF routing.

B.

Any traffic destined for networks that terminate on R1 will still beforwarded to R1.

C.

The metrics for all transit interfaces on R1 is set to the maximum value of 65,535.

D.

R1 participates in OSPF routing but does not send or receive transit traffic.

E.

R1 does not send or receive transit traffic during the maintenance window even if no alternative paths exist to the given destination.

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Questions 9

When using wide metrics, which two statements about route advertisement between IS-IS levels are correct? (Choose two.)

Options:

A.

Level 1 and Level 2 routers do not advertise Level 2 routes into the Level 1 area by default.

B.

Level 1 routes are advertised to Level 2 routers by default.

C.

If wide-metrics-only is configured, Level 1 routes are not advertised to Level 2 routers by default.

D.

Level 1 routes advertised as external routes into Level 1 are not advertised to any Level 2 routers by default.

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Questions 10

Which two multicast listenerregistration protocols are supported in the Junos operating system? (Choose two.)

Options:

A.

MLD

B.

DVMRP

C.

IGMP

D.

PIM

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Questions 11

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

Options:

A.

BPDUs from the root bridge for VLAN 10 have been received on the ge-0/0/7.0 interface.

B.

DS-1 is the root bridge for VLAN 10.

C.

BPDUs fromthe root bridge for VLAN 20 have been received on the ge-0/0/7.0 interface.

D.

Default VSTP bridge priority values are configured.

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Questions 12

You are implementing the route summarization feature of OSPF.

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

Options:

A.

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

B.

It reduced the routing table size, enabling devices to store and process lessinformation.

C.

It reduces the impact of topology changes on a device.

D.

It provides optimal routing in the network.

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Questions 13

Which three statements are correct about EVPN route types? (Choose three.)

Options:

A.

Type 3 routes carry replication information.

B.

Type 2 routes carry endpoint MAC address information.

C.

Type 2 routes carry endpoint IP address information.

D.

Type 5 routes carry replication information.

E.

Type 1 routes carry endpoint MAC address information.

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Questions 14

Referring to the exhibit,traffic ingresses on interface ge-0/0/3 and egresses on interface ge-0/0/4.

Which queue does traffic with the IP precedence value of 100 use?

Options:

A.

network-control

B.

assured-forwarding

C.

best-effort

D.

expedited-forwarding

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Questions 15

You recently committed a change to a router to reject OSPF routes sourced from area 10. However, you are still seeing area 10 routes in the routing table.

Referring to the exhibit, which statement is correct?

Options:

A.

The OSPF protocol is first matched by find-ospf and accepted.

B.

The routes only timeout after 24 hours.

C.

The routes remain in the table until the device is rebooted.

D.

The routes remain in the table until the routing daemon is restarted.

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Questions 16

Referring to the exhibit, you haveplaced the cos multifield classifier on all edge interfaces and configured the relevant CoS parameters.

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

Options:

A.

SSH traffic using the default port will be placed in the af forwarding classand accepted.

B.

SSH traffic using the default port will be placed in the best-effort forwarding class and accepted.

C.

UDP traffic using the 16000 port will be placed in the voice forwarding class and accepted.

D.

UDP traffic using the 16000 port will beplaced in the best-effort forwarding class and accepted.

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Questions 17

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.

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Questions 18

You are troubleshooting a BGP connection.

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

Options:

A.

Packetfragmentation is preventing the session from establishing.

B.

The 192.168.1.5 peer has a misconfigured MD5 key.

C.

The ge-0/0/1 interface is disabled.

D.

The 192.168.1.4 peer has a misconfigured autonomous system number.

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Questions 19

Your network is multihomed to two ISPs. The BGP sessions are established; however, the ISP peers are not receiving any routes.

Which two statements are correct about troubleshooting your configuration? (Choose two.)

Options:

A.

Verify the import policies on your router.

B.

Verify that the BGP routes are active in your routing table.

C.

Verify the export policies on your router.

D.

Verity that the multihop settings are configured on your router.

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Exam Code: JN0-649
Exam Name: Enterprise Routing and Switching Professional (JNCIP-ENT)
Last Update: May 19, 2024
Questions: 65
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