VALUABLE JN0-281 FEEDBACK & LATEST JN0-281 CRAM MATERIALS

Valuable JN0-281 Feedback & Latest JN0-281 Cram Materials

Valuable JN0-281 Feedback & Latest JN0-281 Cram Materials

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Tags: Valuable JN0-281 Feedback, Latest JN0-281 Cram Materials, JN0-281 Test Testking, JN0-281 Reliable Test Tips, JN0-281 Reliable Exam Sims

There is a high demand for Juniper Development certification, therefore there is an increase in the number of Juniper JN0-281 exam candidates. Many resources are available on the internet to prepare for the Data Center, Associate (JNCIA-DC) exam. PassTestking is one of the best certification exam preparation material providers where you can find newly released Juniper JN0-281 Dumps for your exam preparation. With years of experience in compiling top-notch relevant Juniper JN0-281 dumps questions, we also offer the Juniper JN0-281 practice test (online and offline) to help you get familiar with the actual exam environment.

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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.

Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q112-Q117):

NEW QUESTION # 112
Which static routing parameter will silently drop the packet if it is set as the next hop?

  • A. Discard
  • B. Readvertise
  • C. Reject
  • D. Resolve

Answer: A

Explanation:
When the discard option is configured as the next hop for a static route, it silently drops any packets that match the route without sending any notification to the sender.
Step-by-Step Breakdown:
Discard Behavior:
If a route uses the discard next hop, the router drops the packet without generating any ICMP message or error back to the sender. This is useful for creating null routes to prevent routing loops or blackhole traffic intentionally.
Reject vs. Discard:
The reject next hop, in contrast, drops the packet but sends an ICMP Destination Unreachable message back to the source.
Juniper Reference:
Static Route Behavior: In Junos, the discard option ensures packets matching a static route are dropped silently, providing a way to discard traffic without alerting the source.


NEW QUESTION # 113
Which statement about switches is correct?

  • A. All ports reside in the same collision domain.
  • B. Each port is in a unique broadcast domain by default.
  • C. Every port is in a unique collision domain.
  • D. Each port is a member of VLAN 2 by default.

Answer: C

Explanation:
Each port on a modern switch creates a separate collision domain. This allows multiple devices to communicate simultaneously without collisions on different ports.
Step-by-Step Breakdown:
Collision Domain:
A collision domain is a network segment where data packets can collide if two devices send packets simultaneously.
On a switch, each port creates a separate collision domain, so collisions only occur if two devices connected to the same port (through a hub, for instance) try to send data at the same time.
Switches vs Hubs:
Unlike hubs, which have one large collision domain, switches isolate collisions to individual ports, improving performance.
Juniper Reference:
Switch Port Behavior: In Juniper switches, each port operates in its own collision domain, enhancing network efficiency by reducing the chances of packet collisions.


NEW QUESTION # 114
What are the different OSPF area types? (Choose two)

  • A. Default-Free Zone
  • B. Virtual Link Area
  • C. Stub Area
  • D. Not-So-Stubby Area (NSSA)

Answer: C,D


NEW QUESTION # 115
Which two statements are true about how switches handle Layer 2 traffic? (Choose two.)

  • A. The MAC address is learned based on the destination MAC address.
  • B. Traffic is forwarded based on the destination MAC address.
  • C. The MAC address is learned based on the source MAC address.
  • D. Traffic is forwarded based on the source MAC address.

Answer: B,C

Explanation:
In Layer 2 switching, switches learn MAC addresses based on the source MAC address of incoming frames and forward frames based on the destination MAC address.
Step-by-Step Breakdown:
MAC Learning:
When a switch receives a frame, it records the source MAC address and the port on which it arrived.
This allows the switch to know where to send traffic destined for that MAC address.
Forwarding Based on Destination:
The switch then looks at the destination MAC address and forwards the frame out of the port associated with that MAC address. If the MAC is unknown, the switch floods the frame to all ports. Juniper Reference: Layer 2 Switching: Juniper switches use source MAC addresses to build MAC tables and forward traffic based on the destination MAC address.


NEW QUESTION # 116
Which three actions are required to implement filter-based forwarding? (Choose three.)

  • A. You must create a RIB group.
  • B. You must create an instance-type vrf routing instance.
  • C. You must create an instance-type forwarding routing instance.
  • D. You must create a security policy.
  • E. You must create a match filter.

Answer: A,C,E

Explanation:
Filter-Based Forwarding (FBF) in Junos OS allows traffic to be routed based on specific criteria such as source address, rather than just the destination address. This is useful in scenarios like policy routing or providing multiple paths for different types of traffic. Step-by-Step Breakdown:
Instance-Type Forwarding:
You must create an instance-type forwarding routing instance. This routing instance allows for different routing tables based on the incoming packet filter.
Command:
set routing-instances FBF-instance instance-type forwarding Match Filter:
You need to create a filter to match the traffic that will be forwarded according to your custom routing policy. This filter is applied to an interface to determine which traffic will use the custom forwarding instance.
Command Example:
set firewall family inet filter FBF-filter term 1 from source-address <address> set firewall family inet filter FBF-filter term 1 then routing-instance FBF-instance RIB Group:
A RIB (Routing Information Base) group is necessary to share routes between the primary routing table and the custom routing instance. This allows FBF traffic to use the routing information from other routing tables.
Command Example:
set routing-options rib-groups FBF-group import-rib inet.0
set routing-instances FBF-instance routing-options rib-group FBF-group
Juniper
Reference: FBF Configuration: Filter-based forwarding requires these specific steps to redirect traffic to a custom routing table based on filter criteria.


NEW QUESTION # 117
......

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