A network engineer is analyzing traffic flows in an IP Clos fabric. They notice that traffic between two servers on the same leaf switch is not traversing the spine. Is this expected behavior?

No, this indicates a misconfiguration because the leaf switch should not be able to forward local traffic.

No, all traffic must go through the spine to ensure consistent policy enforcement.

Yes, but only if the leaf switch has a direct link to the spine for that traffic.

Yes, traffic between devices on the same leaf switch is switched locally and does not need to go to the spine.

In an IP Clos campus fabric, what is the primary role of a leaf switch?

To act as a central controller for the entire fabric

To provide routing between the campus fabric and the internet

To connect end devices such as access points, clients, and servers to the fabric

To interconnect all spine switches and provide a high-speed backbone

A network engineer is configuring a new campus fabric with EVPN-VXLAN. They need to ensure that when a new endpoint connects to a leaf switch, other leaf switches learn about that endpoint's MAC address and the VXLAN tunnel it should use. Which component of EVPN-VXLAN is responsible for this control plane signaling?

The spine switches use OSPF to learn MAC addresses and distribute them to all leaves.

VXLAN uses multicast to flood MAC addresses to all switches in the fabric, eliminating the need for a control plane.

Leaf switches use LLDP to discover endpoints and share that information with other leaves.

EVPN uses BGP to advertise MAC and IP routes between leaf switches, allowing them to build VXLAN tunnels dynamically.

A data center operator is designing an IP Clos fabric with high availability requirements. They want to ensure that if a spine switch fails, traffic is automatically rerouted without manual intervention. Which mechanism provides this redundancy?

Spanning Tree Protocol (STP), which blocks redundant paths to prevent loops and unblocks them on failure.

Link Aggregation (LAG) between all spines and leaves to create a single logical link.

VRRP (Virtual Router Redundancy Protocol) on the spine switches to provide a virtual gateway.

ECMP (Equal-Cost Multi-Path) routing, which allows traffic to be distributed across multiple spines and automatically reroutes if one fails.

In a campus fabric, what is the function of the underlay network?

To provide a management plane for the fabric

To provide the physical IP connectivity between switches in the fabric

To enforce security policies between VLANs

To create logical tunnels that carry tenant traffic

Juniper NetworksCertified Specialist, Mist AI Wired (JNCIS-MistAI)

Domain 4Objective 3

Campus Fabric IP Clos JN0-460 Practice Questions (Page 1)

Part of the Campus Fabric Architecture domain, which makes up ~23% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~8–14 in this domain), expect 1–2 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

8concepts

Questions 1–5

1expert · hard
A network engineer is analyzing traffic flows in an IP Clos fabric. They notice that traffic between two servers on the same leaf switch is not traversing the spine. Is this expected behavior?
Select an answer first
2foundation · easy
In an IP Clos campus fabric, what is the primary role of a leaf switch?
Select an answer first
3application · medium
A network engineer is configuring a new campus fabric with EVPN-VXLAN. They need to ensure that when a new endpoint connects to a leaf switch, other leaf switches learn about that endpoint's MAC address and the VXLAN tunnel it should use. Which component of EVPN-VXLAN is responsible for this control plane signaling?
Select an answer first
4application · medium
A data center operator is designing an IP Clos fabric with high availability requirements. They want to ensure that if a spine switch fails, traffic is automatically rerouted without manual intervention. Which mechanism provides this redundancy?
Select an answer first
5foundation · easy
In a campus fabric, what is the function of the underlay network?
Select an answer first

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