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Unparalleled Juniper - JN0-280 - Data Center, Associate (JNCIA-DC) Test Valid

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Juniper JN0-280 certification exam is designed for individuals who want to gain expertise in data center technologies and become a certified data center associate. Data Center, Associate (JNCIA-DC) certification is aimed at network engineers, technicians, and administrators who are responsible for designing, implementing, and managing data center networks using Juniper Networks technologies. The JN0-280 exam is the first step towards becoming a Juniper Networks Certified Associate in Data Center (JNCIA-DC).

The JNCIA-DC certification exam is a multiple-choice exam that consists of 65 questions. Candidates are given 90 minutes to complete the exam and must achieve a passing score of 65% or higher to earn the certification. JN0-280 Exam is available in multiple languages, including English, Japanese, and Simplified Chinese, making it accessible to individuals from different parts of the world. Passing the JNCIA-DC certification exam demonstrates a candidate's proficiency in data center networking and validates their knowledge and skills to potential employers.

Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q134-Q139):

NEW QUESTION # 134
Which statement is correct about the BGP AS path when advertising routes?

A. The order of the AS path is not significant.
B. The local AS number is added to the beginning of the AS path.
C. The order of the AS path is only significant in IBGP.
D. The local AS number is added to the end of the AS path.

Answer: B

Explanation:
The BGPAS (Autonomous System) pathattribute is crucial in path selection and loop prevention. Each BGP router appends itslocal AS numberto the beginning of the AS path when it advertises a route to an external BGP (eBGP) peer.
Step-by-Step Breakdown:
* AS Path Attribute:The AS path is a sequence of AS numbers that a route has traversed to reach a destination. Each AS adds its number to the front of the path, allowing BGP to track the route's history.
* Why the Local AS is Added at the Beginning:When advertising a route to an eBGP neighbor, a BGP router adds its own AS number to the beginning of the AS path. This ensures that the AS path reflects the route's journey accurately from the origin to the destination, and prevents loops in BGP. If the route returns to the same AS, the router will detect its AS number in the path and reject the route, preventing routing loops.
* Order of the AS Path:The order is significant because BGP uses it to select the best path. A shorter AS path is preferred, as it indicates fewer hops between the source and destination.
Juniper Reference:
* AS Path Attribute: Junos devices append the local AS at the start of the AS path before advertising the route to an external peer.

NEW QUESTION # 135
Which statement is correct about per-flow load balancing?

A. Packets associated with the same flow are sent through different egress ports.
B. Packets associated with the same flow are sent through the same egress port.
C. The packets are guaranteed to arrive at their destination in a different order in which they were sent.
D. The packets are guaranteed to arrive at their destination in the same order in which they were sent.

Answer: B

Explanation:
Per-flow load balancingensures that packets within the same flow are always forwarded over the same path, ensuring that packet order is preserved.
Step-by-Step Breakdown:
* Flow Definition:A flow is typically defined by a combination of packet attributes like source
/destination IP, source/destination port, and protocol type. Packets that belong to the same flow are routed over the same path to avoid reordering.
* Per-Flow Behavior:Inper-flow load balancing, the hashing algorithm ensures that all packets in a particular flow use thesame egress port, maintaining order across the network.
Juniper Reference:
* Load Balancing in Juniper: This method ensures that flows are balanced across multiple paths while preventing packet reordering within a single flow.

NEW QUESTION # 136
In the context of Link Aggregation Groups (LAG), what is the primary purpose of LACP?

A. To increase the error rate in data transmission
B. To provide a method for encrypting data packets
C. To dynamically manage the bundling of several physical ports
D. To reduce the speed of data transfer

Answer: C

NEW QUESTION # 137
Martian addresses are:

A. Addresses used for load balancing.
B. Special routes for interplanetary communication.
C. Addresses used in MPLS.
D. Unroutable addresses that are generally filtered by routers.

Answer: D

NEW QUESTION # 138
In a Spine/Leaf IP-Fabric architecture, what is the primary role of the leaf switches?

A. To manage the overall data center network.
B. To provide direct connectivity to servers.
C. To interconnect different data centers.
D. To perform deep packet inspection.

Answer: B

NEW QUESTION # 139
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