100% PASS QUIZ ACCURATE JUNIPER - JN0-281 - DATA CENTER, ASSOCIATE (JNCIA-DC) EXAM TOPICS PDF

100% Pass Quiz Accurate Juniper - JN0-281 - Data Center, Associate (JNCIA-DC) Exam Topics Pdf

100% Pass Quiz Accurate Juniper - JN0-281 - Data Center, Associate (JNCIA-DC) Exam Topics Pdf

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Tags: JN0-281 Exam Topics Pdf, Real JN0-281 Questions, Examcollection JN0-281 Free Dumps, Exam JN0-281 Preparation, JN0-281 Technical Training

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Juniper JN0-281 Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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 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
  • 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 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 5
  • 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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Real JN0-281 Questions - Examcollection JN0-281 Free Dumps

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Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q171-Q176):

NEW QUESTION # 171
Referring to the exhibit, how many collision domains are present in the topology?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: C


NEW QUESTION # 172
Which OSPF packet types are used to establish and maintain neighbor relationships? (Choose two)

  • A. Link State Update packets
  • B. Database Description packets
  • C. Hello packets
  • D. Link State Request packets

Answer: B,C


NEW QUESTION # 173
What is the default route preference of a static route in the Junos OS?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: A

Explanation:
In Junos OS, the default route preference for a static route is 5. Route preference values are used to determine which route should be installed in the routing table when multiple routes to the same destination are available.
Step-by-Step Breakdown:
Static Route Preference:
A static route, by default, has a preference of 5, making it a highly preferred route. Lower preference values are more preferred in Junos, meaning static routes take precedence over most dynamic routing protocol routes, such as OSPF (preference 10) or BGP (preference 170).
Route Preference:
Route preference is a key factor in the Junos routing decision process. Routes with lower preference values are preferred and installed in the forwarding table.
Juniper Reference:
Static Routes: In Junos, the default preference for static routes is 5, making them more preferred than most dynamic routes.


NEW QUESTION # 174
In the Junos OS, which feature is used to create an alternate next hop with a unique preference for a static route?

  • A. Resolve
  • B. Next-hop
  • C. Qualified-next-hop
  • D. Preference

Answer: C

Explanation:
In Junos OS, the qualified-next-hop feature is used to specify an alternate next hop for a static route, along with a unique preference value.
Step-by-Step Breakdown:
Qualified-Next-Hop:
A qualified-next-hop allows you to define multiple next hops for a static route, each with its own preference. This provides flexibility by allowing the router to choose the best available next hop based on reachability and preference.
Use Case:
If the primary next hop becomes unreachable, the router can automatically switch to the alternate next hop defined by the qualified-next-hop with a higher preference value.
Command Example:
set routing-options static route 10.10.10.0/24 qualified-next-hop 192.168.1.1 preference 5 set routing-options static route 10.10.10.0/24 qualified-next-hop 192.168.1.2 preference 10 Preference:
The next hop with the lowest preference is chosen first. If it becomes unavailable, the router will use the higher preference next hop.
Juniper
Reference: Qualified-Next-Hop: This feature is used to configure backup or alternate next hops for static routes in Juniper devices.


NEW QUESTION # 175
Exhibit:

Referring to the exhibit, which next hop will be preferred in the routing table?

  • A. Neither next hop will be preferred.
  • B. Next hop IP address 172.25.20.200 will be preferred.
  • C. Next hop IP address 172.25.20.254 will be preferred.
  • D. Both next hops will be preferred.

Answer: B

Explanation:
In the exhibit, we see a static route configuration with two possible next hops for the default route (0.0.0.0/0):
next-hop 172.25.20.254 with the default preference of 7.
qualified-next-hop 172.25.20.200 with a preference of 6.
Step-by-Step Breakdown:
Preference Value:
In Junos OS, the preference value is used to determine which route should be preferred in the routing table. The lower the preference value, the higher the priority for the route.
Comparison:
In this case:
The next hop 172.25.20.254 has a preference of 7.
The qualified-next-hop 172.25.20.200 has a preference of 6.
Preferred Next Hop:
Since 172.25.20.200 has a lower preference (6) compared to 172.25.20.254 (7), it will be the preferred next hop in the routing table, assuming both next hops are reachable. Juniper Reference: Qualified Next Hop: In Junos, static routes with multiple next-hop options are selected based on the preference value, with the lower value being preferred.


NEW QUESTION # 176
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