JN0-1103 Free Sample Questions

An architect is designing a large-scale, multi-tenant data center using a spine-and-leaf IP fabric. The design must be highly scalable and avoid complex IGP configurations or route reflectors within the fabric. The primary goal is simple, robust routing between leaf switches. Given the requirements for scalability and operational simplicity, which routing protocol design is optimal for the IP fabric underlay? ```mermaid graph TD subgraph "eBGP Underlay Design" Spine1(Spine - ASN 65000) Spine2(Spine - ASN 65000) Leaf1(Leaf - ASN 65001) Leaf2(Leaf - ASN 65002) Leaf3(Leaf - ASN 65003) Leaf1 -- eBGP --> Spine1 Leaf1 -- eBGP --> Spine2 Leaf2 -- eBGP --> Spine1 Leaf2 -- eBGP --> Spine2 Leaf3 -- eBGP --> Spine1 Leaf3 -- eBGP --> Spine2 end ```

A global enterprise is transitioning from a traditional MPLS-based WAN to a modern SASE architecture to better support its remote workforce and cloud applications. The design team must select components that align with the core tenants of a SASE framework. Which TWO of the following capabilities are fundamental components of a Juniper SASE solution? (Select TWO)

A university is modernizing its campus network to support seamless mobility and simplified network segmentation across multiple buildings. The design calls for an EVPN-VXLAN fabric. A key requirement is to extend Layer 2 domains between buildings without relying on traditional Spanning Tree Protocol (STP). In an EVPN-VXLAN campus fabric, what is the primary function of the VXLAN Tunnel Endpoints (VTEPs)?

A large e-commerce company is designing its new data center network for maximum resiliency. The core of the design is an EVPN-VXLAN fabric using QFX Series switches. A critical server farm, hosting the company's main application, requires active-active multihoming to two different leaf switches (Leaf-1 and Leaf-2) for both load balancing and redundancy. The servers are connected using standard LACP bonds. The primary design goal is to ensure that if either Leaf-1 or its uplinks fail, traffic continues to flow through Leaf-2 without any service interruption or need for the server to detect a link failure on its LACP bundle. The solution must prevent traffic black-holing and ensure rapid convergence. The solution should be standards-based and avoid proprietary link aggregation protocols. Which Juniper technology should be implemented on Leaf-1 and Leaf-2 to meet these active-active multihoming requirements for the server farm?

True or False: A "brownfield" network design project implies that the new network components must integrate with, or replace parts of, a pre-existing, operational network infrastructure.

A retail company is deploying a Juniper AI-driven SD-WAN solution to its 200 store locations. Each store has a primary broadband link and a secondary LTE link. The design requires that Point-of-Sale (POS) transaction traffic always uses the link with the lowest latency, while guest Wi-Fi traffic should be load-balanced across both links. Where is the real-time path selection decision for the POS traffic made in a Juniper SD-WAN architecture?

A systems administrator is physically racking new equipment for a spine-and-leaf data center fabric. The design includes four spine switches and thirty-two leaf switches. The administrator questions the physical cabling plan. What is the fundamental physical connectivity rule for a non-blocking spine-and-leaf architecture?

A security architect is designing a Zero Trust network for a financial institution. The core principle is "never trust, always verify." A key part of the design involves dynamically adjusting a user's access rights based on their behavior, device posture, and location in real-time. Which concept is most critical for implementing this dynamic, context-aware access control in a Zero Trust model?

True or False: In the SRX chassis cluster configuration shown below, if the primary node (node0) fails, the cluster will maintain stateful connections for existing TCP sessions that fail over to the new primary node (node1). ```mermaid graph TD subgraph "SRX Chassis Cluster" SRX1[node0 - Primary] SRX2[node1 - Backup] SRX1 ---|Control Link| SRX2 SRX1 ---|Fabric Link for RTOs| SRX2 end Internet((Internet)) --reth0--> SRX1 Internet --reth0--> SRX2 LAN[Internal LAN] --reth1--> SRX1 LAN --reth1--> SRX2 ```

A network designer is planning a new enterprise WLAN deployment for a multi-floor office building using the Juniper Mist platform. To ensure a successful outcome, the designer must follow a structured process. Which THREE of the following activities are critical during the initial design and planning phases, before any hardware is deployed? (Select THREE)