PERFECT TOP JN0-281 QUESTIONS - WIN YOUR JUNIPER CERTIFICATE WITH TOP SCORE

Perfect Top JN0-281 Questions - Win Your Juniper Certificate with Top Score

Perfect Top JN0-281 Questions - Win Your Juniper Certificate with Top Score

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Tags: Top JN0-281 Questions, JN0-281 Test Dates, Reliable JN0-281 Exam Questions, Reliable JN0-281 Test Bootcamp, Examinations JN0-281 Actual Questions

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Juniper JN0-281 Exam Syllabus Topics:

TopicDetails
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
  • 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 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.
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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JN0-281 Test Dates & Reliable JN0-281 Exam Questions

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Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q19-Q24):

NEW QUESTION # 19
What are two consequences of having all network devices in a single collision domain? (Choose two.)

  • A. The chance of packet collision is increased.
  • B. The chance of packet collision is decreased.
  • C. The amount of network resource consumption does not change.
  • D. The amount of network resource consumption is increased.

Answer: A,D

Explanation:
A collision domain is a network segment where data packets can "collide" with one another when being sent on the same network medium.
Step-by-Step Breakdown:
Increased Collision Probability:
If all devices are in a single collision domain, the likelihood of packet collisions increases as more devices attempt to send packets simultaneously, leading to network inefficiencies. Increased Resource Consumption:
More collisions result in increased network resource consumption as devices need to retransmit packets, causing higher utilization of bandwidth and slowing down network performance. Juniper Reference: Collision Domains: Proper network segmentation using switches reduces collision domains, thereby improving network performance and reducing packet collisions.


NEW QUESTION # 20
Exhibit:

Referring to the exhibit, what is the route preference of the 172.25.11.254 next hop?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: C

Explanation:
In the exhibit, we see two next-hop addresses for the default static route (0.0.0.0/0):
The first next hop is 172.25.11.254, with no specified preference.
The second next hop is 172.25.11.200, with a specified preference of 140.
Step-by-Step Breakdown:
Default Static Route Preference:
If no preference is explicitly set for a next hop in Junos, it defaults to 5 for static routes.
Determining Preference:
In this case, the next hop 172.25.11.254 does not have an explicit preference defined, so it will use the default value of 5. The second next hop has a preference of 140, which is higher, meaning it will only be used if the primary next hop is unavailable. Juniper Reference: Static Route Preference: In Junos, the default preference for static routes is 5, and this value is applied unless overridden by the preference parameter.


NEW QUESTION # 21
Exhibit:

Referring to the exhibit, which statement is correct?

  • A. The configuration will commit successfully and BGP group 1 will operate as IBGP.
  • B. BGP group 1 requires a type external parameter.
  • C. BGP group 1 requires a type internal parameter.
  • D. The configuration will commit successfully and BGP group 1 will operate as EBGP.

Answer: D

Explanation:
In the exhibit, BGP is configured with local AS 65101 and a neighbor at 172.16.1.1 in peer AS 65201. This setup involves two different Autonomous Systems (AS), indicating an External BGP (EBGP) configuration.
Step-by-Step Breakdown:
EBGP vs. IBGP:
EBGP is used between routers in different ASes. In this case, the local AS is 65101 and the peer AS is 65201, meaning the BGP session is EBGP.
IBGP is used between routers within the same AS, which is not applicable here as the AS numbers are different.
BGP Group Configuration:
The configuration does not require a type external parameter because Junos OS automatically recognizes the session as EBGP when the local and peer AS numbers are different.
The BGP session will operate as EBGP, and the configuration will commit successfully.
Juniper Reference:
BGP Configuration: In Juniper, EBGP is automatically recognized when the local and peer AS numbers differ, without needing to specify type external.


NEW QUESTION # 22
Which OSPF troubleshooting tool is used to check the OSPF process and neighborship?

  • A. Route summarization
  • B. Traceoptions
  • C. Ping
  • D. SNMP

Answer: B


NEW QUESTION # 23
Which route is preferred by the Junos OS software routing tables?

  • A. Aggregate
  • B. Direct
  • C. BGP
  • D. Static

Answer: B

Explanation:
In Junos OS, direct routes are the most preferred routes in the routing table, having the highest priority.
Step-by-Step Breakdown:
Direct Routes:
Direct routes represent networks that are directly connected to the router's interfaces. Since these routes are directly accessible, they are assigned the highest priority and always take precedence over other types of routes.
Preference Values:
Direct routes have a preference of 0, which is the most preferred in Junos. Static routes, OSPF routes, and BGP routes have higher preference values and will only be used if there are no direct routes to the destination.
Juniper Reference:
Direct Route Preference: In Junos, direct routes are always preferred over other routes, ensuring that the router forwards traffic through locally connected networks.


NEW QUESTION # 24
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