A large enterprise is deploying virtual networks on a Juniper QFX fabric. They have a requirement to isolate traffic between tenants, but they also need to allow certain tenants to communicate with a shared management network. The management network is in the default routing instance. Which approach provides the required isolation while allowing controlled access to the management network?

Place all tenant interfaces in the default routing instance and use firewall filters to restrict traffic to the management network.

Create a single routing instance for all tenants and use policy-based routing to send management traffic to the default instance.

Use EVPN-VXLAN to isolate tenants and place the management network in a VXLAN VNI.

Create a separate routing instance for each tenant and use logical tunnel interfaces to connect each tenant instance to the default instance.

Which benefit is directly associated with using virtual networks in a data center?

Guaranteed increase in throughput for all tenants

Simplified tenant onboarding and network segmentation

Elimination of all security risks between tenants

Reduced need for physical cabling

Which mechanism is used to prevent a tenant from accessing another tenant's traffic in a virtual network?

Separate forwarding tables for each tenant

Using the same IP address range for all tenants

MAC address filtering on all switches

Firewall filters applied to the physical interface

A data center is deploying a large number of virtual networks on a Juniper QFX fabric. The design team is evaluating whether to use a centralized routing instance model or a distributed routing instance model. The network must support 1,000 tenants, each with its own routing instance. Which consideration is most important when choosing between these models?

Distributed routing instances are easier to manage because they are all on the same device.

Distributed routing instances require more VLANs, which is a limiting factor.

Centralized routing instances reduce the number of forwarding tables but can become a bottleneck for traffic.

Centralized routing instances are always more scalable because they use fewer resources.

A large data center is deploying virtual networks for 500 tenants across a Juniper QFX fabric. Each tenant requires multiple routing instances. The operations team is concerned about the scalability of the control plane. Which approach best addresses this concern while maintaining tenant isolation?

Use a single routing instance with multiple forwarding tables and policy-based routing to separate tenants.

Use a single routing instance for all tenants and rely on firewall filters to isolate traffic.

Use a separate routing instance per tenant and enable BGP route reflection to distribute routes efficiently.

Use EVPN-VXLAN to encapsulate tenant traffic and rely on the underlay for routing.

Juniper NetworksCertified Specialist, Data Center (JNCIS-DC)

Domain 6Objective 4

Virtual Networks JN0-481 Practice Questions (Page 2)

Part of the Data Center Multitenancy domain, which makes up ~20% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–12 in this domain), expect 1–2 from this objective — we provide 17 practice questions to prepare you well beyond it. (estimate)

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Questions 6–10

6expert · hard
A large enterprise is deploying virtual networks on a Juniper QFX fabric. They have a requirement to isolate traffic between tenants, but they also need to allow certain tenants to communicate with a shared management network. The management network is in the default routing instance. Which approach provides the required isolation while allowing controlled access to the management network?
Select an answer first
7foundation · easy
Which benefit is directly associated with using virtual networks in a data center?
Select an answer first
8foundation · easy
Which mechanism is used to prevent a tenant from accessing another tenant's traffic in a virtual network?
Select an answer first
9expert · hard
A data center is deploying a large number of virtual networks on a Juniper QFX fabric. The design team is evaluating whether to use a centralized routing instance model or a distributed routing instance model. The network must support 1,000 tenants, each with its own routing instance. Which consideration is most important when choosing between these models?
Select an answer first
10expert · hard
A large data center is deploying virtual networks for 500 tenants across a Juniper QFX fabric. Each tenant requires multiple routing instances. The operations team is concerned about the scalability of the control plane. Which approach best addresses this concern while maintaining tenant isolation?
Select an answer first

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Virtual Networks JN0-481 Practice Questions (Page 2)

Questions 6–10

Which benefit is directly associated with using virtual networks in a data center?

Which mechanism is used to prevent a tenant from accessing another tenant's traffic in a virtual network?

A large data center is deploying virtual networks for 500 tenants across a Juniper QFX fabric. Each tenant requires multiple routing instances. The operations team is concerned about the scalability of the control plane. Which approach best addresses this concern while maintaining tenant isolation?

Keep studying — Data Center Multitenancy