JN0-683 Exam Dumps Free Test Engine Verified By JNCIP-DC Certified Experts [Q41-Q59]

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JN0-683 Exam Dumps Free Test Engine Verified By JNCIP-DC Certified Experts

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Juniper JN0-683 Exam Syllabus Topics:

Section	Weight	Objectives
VXLAN	20%	– VXLAN troubleshooting – VXLAN control plane and data plane operation – VXLAN configuration and monitoring
Layer 3 Fabrics	20%	– IP fabric architecture and design – Routing protocols in IP fabrics – Fabric scaling and high availability
Data Center Interconnect	15%	– EVPN-VXLAN based DCI – Layer 2 and Layer 3 interconnect – Inter-fabric stitching
EVPN-VXLAN Signaling	20%	– CRB and ERB architectures – EVPN concepts and route types – MBGP for EVPN – MAC learning and symmetric routing
Data Center Deployment and Management	20%	– Configuration management and automation – Software upgrades and management – Zero Touch Provisioning (ZTP)
Data Center Architecture and Security	5%	– Security features in data center networks – Traffic protection and segmentation

NEW QUESTION 41
Which two statements are true about IP fabrics using unnumbered BGP? (Choose two.)

Unnumbered BGP requires that family inet6is configured on each interface.

Unnumbered BGP peering automatically provisions IPv6 peering.

Unnumbered BGP requires that family inet is configured on each interface.

Unnumbered BGP peering automatically provisions IPv4 peering.

NEW QUESTION 42
In a centrally-routed bridging (CRB) overlay, which device typically performs the Layer 3 gateway function?

The server leaf devices.

The spine devices.

The access switches.

The border leaf devices only.

NEW QUESTION 43
Click the Exhibit button.

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

Each leaf device removes the VXLAN header and forwards the Layer 2 frame with original source and destination MAC address.

Each leaf device acts as a bridge between the VNIs and allows traffic from one VNI to be forwarded to a different VNI.

Each leaf device replaces the source MAC address of the original frame with the MAC address of the gateway interface.

Each leaf device encapsulates Layer 2 frames in VXLAN packets and performs Layer 3 forwarding on the Layer 3 IP fabric.

NEW QUESTION 44
You want to suppress unnecessary ARP flooding in your EVPN-VXLAN fabric. Which EVPN route type enables this capability?

Type 1

Type 2

Type 3

Type 4

NEW QUESTION 45
Your company asks you to create a network in one of its data centers specifically for supporting AI or ML workloads. You have chosen to use lossless Ethernet.
In this scenario, which statement about Juniper Networks’ best practices for Ethernet networks that support RDMA AI/ML traffic is correct?

Assign all shared buffers to the lossless queues.

Disable LLDP on interfaces that use DCBX

Modify the load balancing default hashing.

Enable ETS on the GPU facing interfaces.

NEW QUESTION 46
An IP fabric with EBGP configured in the overlay uses a different AS number for each node in the fabric.
Which two benefits does this configuration have over using a single AS scheme? (Choose two.)

There are fewer BGP peers.

It avoids the use of route reflectors.

There is more TCAM space for AS numbers.

It provides more efficient BGP path selection.

NEW QUESTION 47
Whatare two ways in which an EVPN-signaled VXLAN is different from a multicast-signaled VXLAN?
(Choose two.)

An EVPN-signaled VXLAN can perform autodiscovery of VTEPs using IS-IS.

An EVPN-signaled VXLAN can perform autodiscovery of VTEPs using BGP.

An EVPN-signaled VXLAN is less resource intensive.

An EVPN-signaled VXLAN features slower and more complete convergence.

* Multicast-Signaled VXLAN:
* In traditional multicast-signaled VXLAN, VTEPs (VXLAN Tunnel Endpoints) use multicast to flood and learn about remote VTEPs. This method relies on multicast in the underlay network to distribute BUM (Broadcast, Unknown unicast, and Multicast) traffic.
* This approach can be resource-intensive due to the need for multicast group management and increased network traffic, especially in large deployments.
* EVPN-Signaled VXLAN:
* EVPN-signaled VXLAN uses BGP (Border Gateway Protocol) to signal the presence of VTEPs and distribute MAC address information. BGP is used for VTEP autodiscovery and the distribution of endpoint information.
* This method is more efficient because it reduces the reliance on multicast, instead using BGP control-plane signaling to handle VTEP discovery and MAC learning, which reduces the overhead on the network and improves scalability.
* Correct Statements:
* B. An EVPN-signaled VXLAN can perform autodiscovery of VTEPs using BGP:This is correct because EVPN uses BGP for VTEP autodiscovery, making it more efficient and scalable compared to multicast-based methods.
* C. An EVPN-signaled VXLAN is less resource-intensive:This is correct because it eliminates the need for multicast flooding in the underlay, instead using BGP for signaling, which is less demanding on network resources.
* Incorrect Statements:
* A. An EVPN-signaled VXLAN can perform autodiscovery of VTEPs using IS-IS:This is incorrect because EVPN relies on BGP, not IS-IS, for VTEP discovery and signaling.
* D. An EVPN-signaled VXLAN features slower and more complete convergence:This is incorrect; EVPN with BGP typically provides faster convergence due to its use of a control plane rather than relying on data plane learning.
Data Center References:
* EVPN-VXLAN is widely adopted in modern data center designs due to its scalability, efficiency, and reduced resource consumption compared to multicast-based VXLAN solutions. It leverages the strengths of BGP for control-plane-driven operations, resulting in more efficient and scalable networks.

NEW QUESTION 48
Click the Exhibit button. Connections between hosts connected to Leaf-1 and Leaf-2 are not working correctly.

Referring to the exhibit, which two configuration changes are required to solve the problem?
(Choose two.)

Configure the set switch-options vtep-source-interface irb.0parameter on Leaf-
1.

Configure the set switch-options vrf-target target:65000:1parameter on Leaf-2.

Configure the set switch-options route-distinguisher 192.168.100.50:1 parameter on Leaf-1.

Configure the set switch-options service-id 1parameter on Leaf-2.

NEW QUESTION 49
You are using a single tenant data center with a bridged overlay architecture. In this scenario, how do hosts of the different virtual networks communicate with each other?

off-fabric using an external device

using anycast gateway addresses configured on the leaf devices

using EVPN Type 5 routes

using virtual gateway addresses configured on the spine

NEW QUESTION 50
Your organization is implementing EVPN-VXLAN and requires multiple overlapping VLAN-IDs. You decide to use a routing-instance type mac-vrf to satisfy this request.
Which two statements are correct in this scenario? (Choose two.)

Host-facing interfaces must be configured using a service-provider style configuration.

Host-facing interfaces must be configured using enterprise-style configuration.

Spine-facing interfaces must be configured using an enterprise-styleconfiguration.

The routing-instance service type can be VLAN-based.

NEW QUESTION 51
Referring to the exhibit, when Host A sends an ARP request for Host B’s IP address, which Junos feature does leaf1 require to send an ARP response back to Host A without having to send a broadcast frame over the fabric?

proxy ARP

proxy NDP

GARP

DAD

NEW QUESTION 52
In a Junos EVPN-VXLAN fabric, which underlay routing protocol is most commonly recommended for a large-scale IP fabric due to its scalability and fast convergence?

OSPF

RIP

EBGP

IS-IS

NEW QUESTION 53
You are using EBGP peering in an underlay IP fabric.
Which two statements are correct in this scenario? (Choose two.)

EBGP peering requires an IGP protocol tor adjacency establishment.

EBGP peering does not require an IGP protocol tor adjacency establishment.

Every leaf node has one peering session to every spine node.

Every leaf node has a peering session to every other leaf node.

NEW QUESTION 54
You manage an IP fabric with an EVPN-VXLAN overlay. You have multiple tenants separated using multiple unique VRF instances. You want to determine the routing information that belongs in each routing instance’s routing table.
In this scenario, which property is used for this purpose?

the VRF target community

the routing instance type

the VRF table label

the route distinguisher value

NEW QUESTION 55
You are using a single tenant data center with a bridged overlay architecture. In this scenario, how do hosts of the different virtual networks communicate with each other?

off-fabric using an external device

using anycast gateway addresses configured on the leaf devices

using EVPN Type 5 routes

using virtual gateway addresses configured on the spine

NEW QUESTION 56
Which statement correctly describes anti-spoofing protection in an EVPN-VXLAN fabric using ARP inspection?

It validates that the source MAC and IP address in an ARP packet match previously learned bindings before allowing the packet.

It encrypts ARP traffic between VTEPs.

It is only applicable to DHCP traffic.

It replaces the need for EVPN Type 2 routes.

NEW QUESTION 57
You are deploying an IP fabric with an oversubscription ratio of 3:1.
In this scenario, which two statements are correct? (Choose two.)

The oversubscription ratio decreases when you add leaf devices.

The oversubscription ratio remains the same when you remove leaf devices.

The oversubscription ratio increases when you remove leaf devices.

The oversubscription ratio remains the same when you add leaf devices.

NEW QUESTION 58
You want to convert an MX Series router from a VXLAN Layer 2 gateway to a VXLAN Layer 3 gateway for VNI 100. You have already configured an IRB interface. In this scenario, which command would you use to accomplish this task?

set protocols isis interface irb.100 passive

set protocols ospf area 0.0.0.0 interface irb.100 passive

set vlans VLAN-100 13-interface irb.100

set bridge-domains VLAN-100 routing-interface irb.100

NEW QUESTION 59
Exhibit.

Referring to the configuration shown in the exhibit, assume that there is no external router present, and that the configuration is fabric-only.
Which two statements are true about the example configuration? (Choose two.)