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Juniper JN0-281 Exam Syllabus Topics:

Topic	Details
Topic 1	Data Center Routing Protocols BGP OSPF: This section of the exam measures skills of a Network Operations Specialist and covers the operation and key concepts of the OSPF protocol. It explains elements such as the link-state database, OSPF packet types, and router IDs, including how adjacencies and designated routers work within areas. The section then transitions to BGP, outlining its basic operations, message types, attributes, and the path selection process. It also discusses both IBGP and EBGP roles. Lastly, the section reviews how to configure, monitor, and troubleshoot OSPF and BGP using routing policies and various tools.
Topic 2	Layer 2 Switching and VLANs: This section of the exam measuresthe skills of a Network Support Engineer and covers the essential concepts of Layer 2 switching operations within Junos OS. It includes an overview of Ethernet switching and bridging, providing an understanding of how Layer 2 networks function. The section also introduces VLAN concepts, focusing on port modes, VLAN tagging methods, and the purpose of Integrated Routing and Bridging (IRB). It further explores the practical side by addressing how to configure, monitor, and troubleshoot both Layer 2 switching and VLANs.
Topic 3	Data Center Architectures: This section of the exam measures the skills of a Data Center Architect and covers foundational knowledge about various data center designs. It includes traditional multitier architectures as well as more modern IP fabric architectures using spine-leaf topologies. The section also touches on Layer 2 and Layer 3 strategies for forwarding traffic, the differences between overlay and underlay networks, and introduces Ethernet VPN–Virtual Extensible LAN (EVPN-VXLAN), explaining its basic purpose and role in data center environments.
Topic 4	High Availability: This section of the exam measures the skills of a Data Center Reliability Engineer and covers strategies to ensure continuous network availability. It includes features like Link Aggregation Groups (LAG), Graceful Restart (GR), Bidirectional Forwarding Detection (BFD), and Virtual Chassis. It also provides a basic understanding of how to configure, monitor, and troubleshoot each of these high-availability components to maintain resilient network performance.
Topic 5	Protocol-Independent Routing: This section of the exam measures the skills of a Routing Engineer and covers routing features that function independently of any specific protocol. It includes static, aggregate, and generated routes, along with the concept of martian addresses. Routing instances and Routing Information Base (RIB) groups are introduced, as well as techniques like load balancing and filter-based forwarding. Configuration, monitoring, and troubleshooting aspects of these routing components are also covered in this section.

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Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q27-Q32):

NEW QUESTION # 27
Which statement is correct about a five-stage IP fabric topology?

A. There is a maximum of three hops between any end-devices
B. There is a maximum of five hops between any end-devices
C. They are typically deployed in small to medium data centers
D. They are commonly referred to as interconnected data centers

Answer: B

NEW QUESTION # 28
In Junos, which command is used to display the status of all interfaces?

A. show interfaces descriptions
B. show vlan brief
C. show ethernet-switching table
D. show interfaces terse

Answer: D

NEW QUESTION # 29
Filter-based forwarding is typically used to:

A. Optimize the routing table size.
B. Automatically generate routing entries.
C. Implement policy-based routing decisions.
D. Increase the security of the routing process.

Answer: C

NEW QUESTION # 30
What is the purpose of using route reflectors in BGP?

A. To increase the speed of BGP convergence
B. To reduce the number of required IBGP sessions in a network
C. To automatically select the best route
D. To encrypt BGP messages

Answer: B

NEW QUESTION # 31
What are two requirements for an IP fabric? (Choose two.)

A. a Layer 3 routing protocol
B. a single connection between each spine and leaf
C. a single connection between each leaf
D. a Layer 2 switching protocol

Answer: A,B

Explanation:
An IP fabric is a network architecture commonly used in data centers to provide scalable, high-throughput connectivity using a spine-leaf topology.
Step-by-Step Breakdown:
Layer 3 Routing Protocol:
An IP fabric relies on a Layer 3 routing protocol, typically BGP or OSPF, to provide routing between the leaf and spine switches. This ensures efficient traffic forwarding across the network. Single Connection Between Spine and Leaf:
In an IP fabric, each leaf switch connects to every spine switch with a single connection. This ensures that traffic between any two leaf switches can travel through the spine layer in just two hops.
Juniper
Reference: Spine-Leaf Design: Juniper's IP fabric implementations are designed for scalability and low-latency routing, often using protocols like BGP for Layer 3 control.

NEW QUESTION # 32
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New JN0-281 Test Papers - JN0-281 Test Cram Review

Juniper JN0-281 Exam Syllabus Topics:

Pass Guaranteed Marvelous Juniper New JN0-281 Test Papers

Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q27-Q32):

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