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JN0-683 Practice Questions

Question # 1
You are asked to implement VXLAN group-based policies (GBPs) in your data center. Which two statements are correct in (his scenario? (Choose two.)
A. VXLAN GBP uses scalable group tags thatmust be configured statically on each switch and activated through 802.1X.
B. VXLAN GBP uses scalable group tags that may be configured on a RADIUS server and pushed to the switch through 802.1X.
C. VXLAN GBP ensures consistent application of security group policies throughout the network.
D. VXLAN GBP ensures consistent application of BGP groups throughout the network.


B. VXLAN GBP uses scalable group tags that may be configured on a RADIUS server and pushed to the switch through 802.1X.
C. VXLAN GBP ensures consistent application of security group policies throughout the network.

VXLAN Group-Based Policies (GBP):

VXLAN Group-Based Policies are used to apply security policies consistently across the network. These policies are often tied to user or device identities rather than static IP addresses, which allows for more dynamic and scalable security management.

Scalable Group Tags via RADIUS and 802.1X:

Option B:VXLAN GBP can use scalable group tags configured on a RADIUS server, which are then pushed to network devices through 802.1X. This allows for centralized and automated policy application based on user or device identity.

Consistent Security Policy Application:

Option C:GBP ensures that security policies are consistently applied across the network, regardless of where a user or device connects. This consistency is crucial in environments where security policies must follow the user or device.

Conclusion:

Option B:Correct—Group tags can be configured on a RADIUS server and pushed via 802.1X, enabling centralized policy management.

Option C:Correct—GBP ensures consistent application of security policies, which is essential for maintaining security across a dynamic network environment.



Question # 2
You are adding a server lo a tenant's network within your data center and must limit access to a specific traffic type within the tenant network without pushing all tenant traffic through a firewall. What will satisfy this requirement?
A. Use route leaking with EVPN and a routing policy.
B. Use filter-based forwarding.
C. Put the new server on a unique subnet within the tenant's network.
D. Use a static route in the tenant VRF with a firewall as the next hop for traffic to the new server.


B. Use filter-based forwarding.

Explanation:

Controlling Traffic Within a Tenant's Network:

The requirement is to limit access to specific traffic types within a tenant’s network without routing all tenant traffic through a firewall. This requires a selective method that can direct specific types of traffic to different paths based on the nature of the traffic.

Filter-Based Forwarding (FBF):

FBF is a technique that allows for routing decisions based on filters applied to the traffic, such as matching on source IP addresses, destination IP addresses, or even specific application types (like HTTP or FTP). This allows specific types of traffic to be forwardedto a specific next hop (e.g., a firewall) without affecting the entire traffic flow within the tenant's network.

Conclusion:

Option B:Correct—Filter-based forwarding allows for granular control of traffic, ensuring that only specific types of traffic within the tenant's network are redirected through a firewall, satisfying the requirement.


Question # 3
You are asked for TX and RX traffic statistics for each interface to which an application server is attached. The statistics need to be reported every five seconds. Using the Junos default settings, which telemetry method would accomplish this request?
A. gNMI
B. SNMP
C. Native Sensors
D. OpenConfig


C. Native Sensors

Explanation:

Telemetry Methods in Junos:

Telemetry is used to collect and report data from network devices. For high-frequency statistics reporting, such as every five seconds, you need a telemetry method that supports this level of granularity and real-time monitoring.

Junos Native Sensors:

Option C:Native Sensors in Junos provide detailed, high-frequency telemetry data, including TX and RX traffic statistics for interfaces. They are designed to offer real-time monitoring with customizable sampling intervals, making them ideal for the five-second reporting requirement.

Conclusion:

Option C:Correct—Native Sensors in Junos are capable of providing the required high-frequency telemetry data every five seconds.


Question # 4
You are configuring VXLAN, and you must ensure that all switches for the multicast groups advertise their existence and learn about other VTEPs. In this scenario, which protocol will accomplish this task?
A. OSPF
B. BGP
C. EVPN
D. PIM


C. EVPN



Question # 5
Whatare two supported methods (or exporting data when using the Junos telemetry interface? (Choose two.)

A. using REST
B. using UDP
C. using SNMP
D. using gRPC


B. using UDP
D. using gRPC

Junos Telemetry Interface (JTI):

The Junos Telemetry Interface is a framework that allows network operators to collect real-time telemetry data from Juniper devices. This data can be used for monitoring, analytics, and network automation.

Data Export Methods:

Option B:UDP (User Datagram Protocol)is a lightweight, connectionless protocol used for exporting telemetry data quickly with minimal overhead. While it doesn't guarantee delivery, it is suitable for high-speed data transfer where occasional packet loss is acceptable.

Option D:gRPC (gRPC Remote Procedure Call)is a modern, high-performance method for data export that supports streaming and remote procedure calls, making it ideal for more complex telemetry data use cases.

Conclusion:

Option B:Correct—UDP is supported for exporting telemetry data.
Option D:Correct—gRPC is also supported, offering advanced streaming capabilities


Question # 6
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.)
A. Host-facing interfaces must be configured using a service-provider style configuration.
B. Host-facing interfaces must be configured using enterprise-style configuration.
C. Spine-facing interfaces must be configured using an enterprise-styleconfiguration.
D. The routing-instance service type can be VLAN-based.


A. Host-facing interfaces must be configured using a service-provider style configuration.
D. The routing-instance service type can be VLAN-based.

Explanation:

Understanding the Scenario:

EVPN-VXLAN deployments often involve scenarios where multiple tenants or applications require overlapping VLAN IDs, which can be managed using the mac-vrf routing instance type. This allows you to segregate traffic within the same VLAN ID across different tenants.

Host-facing Interface Configuration:

A. Host-facing interfaces must be configured using a service-provider style configuration:This is correct. In mac-vrf configurations, host-facing interfaces (those connecting end devices) typically follow a service-provider style configuration, where each customer or tenant's traffic is isolated even if overlapping VLAN IDs are used.

B. Host-facing interfaces must be configured using enterprise-style configuration:This is incorrect for mac-vrf instances because enterprise-style configurations are more common in simpler, less segmented networks.

Routing Instance Service Type:

D. The routing-instance service type can be VLAN-based:This is correct. The service type in mac-vrf can indeed be VLAN-based, which is particularly useful in scenarios where VLAN ID overlap is needed between different tenants or services.

Data Center References:

The mac-vrf instance type is powerful for handling complex multi-tenant environments in EVPN-VXLAN, especially when dealing with overlapping VLAN IDs across different segments of the network.


Question # 7
Which two statements are correct about an IP fabric? (Choose two.)

A. All leaf devices can use the same AS number in an IP fabric without making any adjustments to the EBGP configuration
B. The multipath multiple-as statement is required to enable ECMP if every device has a different AS number.
C. Only a single point to point EBGP session is required between peers in an IP fabric.
D. FBGP is only required to route mostrouting information to external devices outside the fabric.


A. All leaf devices can use the same AS number in an IP fabric without making any adjustments to the EBGP configuration
B. The multipath multiple-as statement is required to enable ECMP if every device has a different AS number.

Explanation:

BGP in IP Fabric:

In an IP fabric, Border Gateway Protocol (BGP) is used to manage the routing between leaf and spine devices. Each device can have the same or different Autonomous System (AS) numbers depending on the network design.

Multipath Multiple-AS:

Option B:If every device in the fabric has a different AS number, then enabling Equal-Cost Multi-Path (ECMP) routing requires the multipath multiple-as statement. This configuration allows BGP to consider multiple paths across different AS numbers as equal cost, enabling efficient load balancing across the network.

Same AS Number Configuration:

Option A:It's possible for all leaf devices to use the same AS number in an IP fabric, which simplifies the configuration. EBGP (External BGP) will still function correctly in this setup because BGP considers the peering relationship rather than strictly enforcing different AS numbers in this specific use case.

Conclusion:

Option B:Correct—This statement is essential for enabling ECMP in a multi-AS environment.

Option A:Correct—Leaf devices can share the same AS number without needing special EBGP configuration.



Question # 8
Which statement is true about a Data Center Interconnect over an IP network?
A. Layer 2 data must traverse a point-to-point link.
B. Layer 2 data must traverse an MPLS LSP.
C. Layer 2 data must be encapsulated.
D. Layer 3 data must be encapsulated.


C. Layer 2 data must be encapsulated.



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Juniper JN0-683 Exam Dumps

Exam Name: Data Center Professional (JNCIP-DC) Exam
Certification Name: JNCIP-DC

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  • Total Questions: 65
  • Last Updation Date: 27-Jan-2025

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