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[General] Latest Juniper JN0-281 Exam Labs - JN0-281 Latest Test Cost

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【General】 Latest Juniper JN0-281 Exam Labs - JN0-281 Latest Test Cost

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The validation of expertise, more career opportunities, salary enhancement, instant promotion, and membership of Juniper certified professional community. In this way, the Data Center, Associate (JNCIA-DC) (JN0-281) can not only validate their skills and knowledge level but also put their careers on the right track. By doing this you can achieve your career objectives.
Juniper JN0-281 Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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 2
  • 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 3
  • 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 4
  • 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 5
  • 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.

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Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q95-Q100):NEW QUESTION # 95
Which Junos OS routing table stores IPv6 addresses?
  • A. inet.6
  • B. inet0.6
  • C. inet6.0
  • D. inet.0
Answer: C
Explanation:
In Junos OS, routing information is stored in different routing tables depending on the protocol and address family. For IPv6 addresses, the routing table used is inet6.0.
Step-by-Step:
Routing Tables in Junos:
inet.0: This is the primary routing table for IPv4 unicast routes.
inet6.0: This is the primary routing table for IPv6 unicast routes.
inet.3: This routing table is used for MPLS-related routing.
Other routing tables, like inet.1, inet.2, are used for multicast and other specific purposes.
inet6.0 Routing Table:
When IPv6 is enabled on a Juniper router, all the IPv6 routes are stored in the inet6.0 table. This includes both direct routes (connected networks) and learned routes (from dynamic routing protocols like OSPFv3, BGP, etc.).
Verification:
To view IPv6 routes, the command show route table inet6.0 is used. This will display the contents of the IPv6 routing table, showing the network prefixes, next-hop addresses, and protocol information for each route.
Juniper
Reference: Junos Command: Use show route table inet6.0 to check IPv6 routing entries.
IPv6 Routing: Ensure that the IPv6 protocol is enabled on interfaces and that routing protocols like OSPFv3 or BGP are properly configured for IPv6 traffic handling.

NEW QUESTION # 96
In the context of data center networking, what is the primary purpose of an Underlay Network?
  • A. To facilitate virtual machine migrations.
  • B. To encrypt data traffic between servers.
  • C. To handle external network connections exclusively.
  • D. To provide a physical infrastructure for an Overlay Network.
Answer: D

NEW QUESTION # 97
What is the primary use of a virtual link in OSPF?
  • A. To encrypt OSPF traffic.
  • B. To connect an OSPF area to the backbone area through a non-backbone area.
  • C. To balance load across multiple links.
  • D. To connect OSPF areas to external networks.
Answer: B

NEW QUESTION # 98
What does VXLAN stand for in the context of EVPN/VXLAN?
  • A. Virtual Extensible VLAN
  • B. Virtualized Ethernet VPN
  • C. Virtual X-Series LAN
  • D. Very Extended Virtual LAN
Answer: A

NEW QUESTION # 99
Which state in the adjacency process do OSPF routers check the MTU size?
  • A. Exchange
  • B. Done
  • C. ExStart
  • D. Init
Answer: A
Explanation:
In OSPF, routers exchange link-state information in different stages to establish full adjacency. The MTU size is checked during the Exchange state.
Step-by-Step Breakdown:
OSPF Adjacency Process:
OSPF routers go through multiple stages when forming an adjacency: Down, Init, 2-Way, ExStart, Exchange, Loading, and Full.
Exchange State:
During the Exchange state, OSPF routers exchange Database Description (DBD) packets to describe their link-state databases. The MTU size is checked at this stage to ensure both routers can successfully exchange these packets without fragmentation.
If there is an MTU mismatch, the routers may fail to proceed past the Exchange state.
Juniper Reference:
MTU Checking in OSPF: Junos uses the Exchange state to check for MTU mismatches, ensuring that routers can properly exchange database information without packet fragmentation issues.

NEW QUESTION # 100
......
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