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Professional Juniper Practice Tests–Reliable JN0-281 Certified
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JN0-281 Certified - JN0-281 Exam Actual Tests
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Juniper JN0-281 Exam Syllabus Topics:
Topic
Details
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
- 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 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 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
- 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.
Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q66-Q71):
NEW QUESTION # 66
Which two statements are correct about BGP? (Choose two.)
- A. IBGP sessions are typically established between physical router interfaces.
- B. IBGP peers do not advertise routes learned from IBGP peers to other IBGP peers.
- C. EBGP uses the AS path to avoid loops.
- D. EBGP sessions are typically established between router loopback interfaces.
Answer: B,C
NEW QUESTION # 67
What are two characteristics of a typical EBGP underlay fabric? (Choose two.)
- A. Each device in an EBGP fabric will be configured to be part of the same private AS.
- B. Each device in an EBGP fabric will be configured in its own unique private AS.
- C. An EBGP fabric does not require an IGP to advertise loopback IPs.
- D. An EBGP fabric relies on an IGP to advertise loopback IPs.
Answer: B,C
NEW QUESTION # 68
What does MACsec stand for?
- A. MAC Security
- B. Media Access Control Sublayer Encryption
- C. Media Access Control Security
- D. MAC Sublayer Encryption
Answer: C
NEW QUESTION # 69
Load balancing in routing is used to:
- A. Automatically update routing tables.
- B. Encrypt data packets.
- C. Compress data to improve transmission speed.
- D. Distribute traffic evenly across multiple paths.
Answer: D
NEW QUESTION # 70
Referring to the exhibit, how many milliseconds will pass before the BGP neighbor is considered dead?
- A. 3000ms
- B. 2000ms
- C. 9000ms
- D. 1000ms
Answer: A
NEW QUESTION # 71
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