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Valid Braindumps JN0-281 Questions | Latest JN0-281 Exam Topics

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Technologies are changing at a very rapid pace. Therefore, the Data Center, Associate (JNCIA-DC) in Procurement and Supply Juniper has become very significant to validate expertise and level up career. Success in the Data Center, Associate (JNCIA-DC) examination helps you meet the ever-changing dynamics of the tech industry. To advance your career, you must register for the Data Center, Associate (JNCIA-DC) JN0-281 in Procurement and Supply Juniper test and put all your efforts to crack the Juniper JN0-281 challenging examination.

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

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.

Topic 4

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 5

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.

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Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q129-Q134):

NEW QUESTION # 129
Exhibit:

Referring to the exhibit, which two statements are correct about default BGP advertisements? (Choose two.)

A. When routes advertised by the SP router are received by router2, they will contain the next-hop address of the SP router.
B. When routes advertised by router2 are received by the SP router, they will contain the next-hop address of router2.
C. When routes advertised by router2 are received by the SP router, they will contain the next-hop address of router1.
D. When routes advertised by the SP router are received by router2, they will contain the next-hop address of router1.

Answer: C,D

Explanation:
The exhibit shows a BGP peering scenario between three routers: router1 and router2 are part of the same AS (AS65000), while the SP router is in a different AS (AS65101). This indicates an EBGP (External BGP) peering between the SP router and router1, and IBGP between router1 and router2.
Step-by-Step Breakdown:
Next-Hop Behavior in BGP:
IBGP: In IBGP, the next-hop address is not modified when advertising routes within the same AS. Thus, when router1 advertises routes learned from router2 to the SP router, it will keep the next-hop address of router1, not router2.
EBGP: In EBGP, the next-hop address is modified. When router1 receives routes from the SP router, it will advertise them to router2 with the next-hop address of router1.
Route Propagation:
Routes received by router1 from router2 will be advertised to the SP router with router1 as the next hop.
Similarly, routes advertised by the SP router will be passed on to router2, with router1 remaining as the next hop.
Juniper
Reference: BGP Next-Hop: Juniper's BGP implementations follow standard BGP next-hop behavior, where the next-hop is modified in EBGP but not in IBGP, ensuring proper route advertisement across autonomous systems.

NEW QUESTION # 130
What is an aggregate route?

A. a group of IP addresses to which a router will not forward traffic
B. often called the route of last resort
C. a static route with only one contributing route
D. a mechanism that allows multiple routes to be summarized into a single route

Answer: D

NEW QUESTION # 131
Referring to the exhibit, which two statements are true? (Choose two.)

A. The configuration will pass the commit check.
B. The BGP group is configured to attempt an EBGP peering session with 192.168.100.2.
C. The BGP group is configured to attempt an EBGP peering session with 192.168.100.1.
D. The configuration will not pass the commit check.

Answer: B,D

NEW QUESTION # 132
Which two statements describe an IP fabric? (Choose two.)

A. An IP fabric uses spine and leaf devices.
B. An IP fabric allows devices to always be one hop away.
C. An IP fabric provides traffic load sharing.
D. An IP fabric depends on Layer 2 switching.

Answer: A,C

Explanation:
An IP fabric is a network topology designed to provide a scalable, low-latency architecture that is typically implemented in modern data centers. It uses spine and leaf switches and enables efficient traffic load sharing across the network.
Step-by-Step Breakdown:
Spine-Leaf Architecture:
Leaf Devices: These switches connect to servers and edge devices within the data center. Each leaf switch connects to every spine switch.
Spine Devices: These high-performance switches interconnect all the leaf switches. There are no direct connections between leaf switches or spine switches. This architecture ensures that any two endpoints within the fabric are only one hop away from each other, minimizing latency.
Traffic Load Sharing:
An IP fabric leverages Equal-Cost Multipath (ECMP) to distribute traffic evenly across all available paths between leaf and spine switches, providing effective load balancing. This ensures that no single link becomes a bottleneck and that traffic is distributed efficiently across the network. Juniper Reference: Juniper provides QFX Series switches optimized for IP fabric topologies, allowing for scalable deployments in modern data centers.
EVPN-VXLAN: Often used in IP fabrics to extend Layer 2 services across the fabric with Layer 3 underlay, enabling both efficient routing and bridging.

NEW QUESTION # 133
Which two prefixes are contributing routes to a 10.20.0.0/18 aggregate route? (Choose two)

A. 10.20.100.0/24
B. 10.20.0.0/24
C. 10.20.60.0/23
D. 10.20.0.0/16

Answer: B,C

NEW QUESTION # 134
......

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