JUNIPER JN0-280 REALISTIC PASS4SURE STUDY MATERIALS FREE PDF

Juniper JN0-280 Realistic Pass4sure Study Materials Free PDF

Juniper JN0-280 Realistic Pass4sure Study Materials Free PDF

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Tags: Pass4sure JN0-280 Study Materials, Test JN0-280 Sample Questions, JN0-280 Valid Exam Fee, Certification JN0-280 Training, Free JN0-280 Dumps

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Test Juniper JN0-280 Sample Questions | JN0-280 Valid Exam Fee

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Juniper JN0-280 exam, also known as JNCIA-DC, is designed to test the knowledge and skills of IT professionals who work with Juniper Networks data center devices and technologies. Earning this certification can help individuals advance their careers and demonstrate their expertise in this field. With a solid understanding of data center architecture, network virtualization, switching, routing, security, and management, candidates can confidently prepare for and pass the JN0-280 Exam.

Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q72-Q77):

NEW QUESTION # 72
Which two statements are correct about VLAN tags? (Choose two.)

  • A. VLAN tags are required on access ports.
  • B. VLAN tags carry a VLAN ID and priority.
  • C. VLAN tags require multiple forwarding tables.
  • D. VLAN tags can be inserted or removed by trunk interfaces.

Answer: B,D

Explanation:
VLAN tagsare used in Ethernet frames to identify and differentiate traffic between multiple VLANs. They are especially important for devices like switches that handle multiple VLANs on the same physical link.
Step-by-Step Breakdown:
* VLAN Tag Contents:
* VLAN ID: The tag contains a 12-bit VLAN ID field that identifies the VLAN to which the frame belongs.
* Priority: The tag also includes a 3-bit priority field (also known as 802.1p priority) used for QoS (Quality of Service) to prioritize traffic.
* Trunk Ports and VLAN Tagging:
* Trunk Portsare used to carry traffic for multiple VLANs across a single link. These interfaces insert (tag) VLAN identifiers into frames when they leave the switch and remove (untag) them when frames enter the switch.
* Access Ports:VLAN tags are typically not used onaccess ports(ports that connect to end devices) since those ports are configured to be part of a single VLAN, and the traffic doesn't need VLAN tags.
Juniper Reference:
* VLAN Tagging: Juniper switches support VLAN tagging and ensure that frames are tagged or untagged as they traverse trunk or access ports, respectively.


NEW QUESTION # 73
Which type of route is used to represent a summary of multiple smaller networks?

  • A. Aggregate route
  • B. Generated route
  • C. Dynamic route
  • D. Static route

Answer: A


NEW QUESTION # 74
Which of the following are functions of MACsec? (Choose two)

  • A. It provides Layer 2 encryption.
  • B. It prevents MAC flooding attacks.
  • C. It enables VLAN tagging.
  • D. It offers data integrity and confidentiality.

Answer: A,D


NEW QUESTION # 75
You want to minimize topology disruptions in your network when the rpd process restarts on a device. Which service would accomplish this task?

  • A. Virtual Chassis
  • B. graceful restart (GR)
  • C. link aggregation groups
  • D. Bidirectional Forwarding Detection (BFD)

Answer: B

Explanation:
Graceful Restart (GR)is a feature that allows a router to maintain forwarding even when the routing process (e.g., the rpd process in Junos) is restarting, minimizing disruption to the network.
Step-by-Step Breakdown:
* Graceful Restart Function:During aGR event, the forwarding plane continues to forward packets based on existing routes, while the control plane (rpd process) is restarting. This prevents traffic loss and maintains routing stability.
* Minimizing Disruptions:GR is particularly useful in ensuring continuous packet forwarding during software upgrades or routing protocol process restarts.
Juniper Reference:
* Graceful Restart in Junos: GR ensures high availability by maintaining forwarding continuity during control plane restarts, enhancing network reliability.


NEW QUESTION # 76
What are two requirements for an IP fabric? (Choose two.)

  • A. a Layer 2 switching protocol
  • B. a single connection between each spine and leaf
  • C. a single connection between each leaf
  • D. a Layer 3 routing protocol

Answer: B,D

Explanation:
AnIP fabricis a network architecture commonly used in data centers to provide scalable, high-throughput connectivity using aspine-leaf topology.
Step-by-Step Breakdown:
* Layer 3 Routing Protocol:An IP fabric relies on aLayer 3 routing protocol, typically BGP or OSPF, to provide routing between the leaf and spine switches. This ensures efficient traffic forwarding across the network.
* Single Connection Between Spine and Leaf:In an IP fabric, each leaf switch connects toevery spine switchwith a single connection. This ensures that traffic between any two leaf switches can travel through the spine layer in just two hops.
Juniper Reference:
* Spine-Leaf Design: Juniper's IP fabric implementations are designed for scalability and low-latency routing, often using protocols like BGP for Layer 3 control.


NEW QUESTION # 77
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