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Pass Guaranteed Quiz 2025 Juniper JN0-281: Efficient Reliable Data Center, Associate (JNCIA-DC) Practice Materials
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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.
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Topic 2 |
- 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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Topic 3 |
- 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.
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Topic 4 |
- 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.
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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 (Q153-Q158):
NEW QUESTION # 153
What is an aggregate route?
- A. often called the route of last resort
- B. a group of IP addresses to which a router will not forward traffic
- 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 # 154
What is the purpose of using route reflectors in BGP?
- A. To reduce the number of required IBGP sessions in a network
- B. To automatically select the best route
- C. To encrypt BGP messages
- D. To increase the speed of BGP convergence
Answer: A
NEW QUESTION # 155
VLANs help in reducing which of the following? (Choose two)
- A. Broadcast domains
- B. Routing complexity
- C. Collision domains
- D. Encryption requirements
Answer: A,C
NEW QUESTION # 156
In the context of Link Aggregation Groups (LAG), what is the primary purpose of LACP?
- A. To dynamically manage the bundling of several physical ports
- B. To increase the error rate in data transmission
- C. To provide a method for encrypting data packets
- D. To reduce the speed of data transfer
Answer: A
NEW QUESTION # 157
What does filter-based forwarding in networking typically allow?
- A. Routing decisions based on extended criteria like packet headers
- B. Load balancing across multiple CPUs
- C. Aggregation of multiple routes into a single entry
- D. Forwarding decisions based on MAC addresses
Answer: A
NEW QUESTION # 158
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