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Exam JN0-280 Experience & Realistic Free PDF Quiz 2025 Juniper Data Center, Associate (JNCIA-DC) Vce Free

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Juniper JN0-280 certification exam is an entry-level exam that is designed to test an individual's knowledge of data center technologies and Juniper Networks products. JN0-280 exam covers a range of topics, including data center architecture, data center networking, data center storage, and data center virtualization. Candidates can prepare for the exam by taking Juniper Networks training courses and using study materials and practice exams.

The JN0-280 Exam covers a wide range of topics related to data center networking, including virtualization, storage networking, data center architecture, and Juniper Networks products such as EX Series Ethernet Switches, QFX Series Ethernet Switches, and SRX Series Services Gateways. Candidates must demonstrate a thorough understanding of these topics in order to pass the exam and earn the JNCIA-DC certification.

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Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q165-Q170):

NEW QUESTION # 165
What are three correct layer names used in legacy hierarchical network design? (Choose three.)

A. Access layer
B. Function layer
C. Modular layer
D. Aggregation layer
E. Core layer

Answer: A,D,E

Explanation:
Inlegacy hierarchical network design, three key layers are used to create a scalable and structured network:
Step-by-Step Breakdown:
* Access Layer:
* The access layer is where end devices, such as computers and IP phones, connect to the network.
It typically involves switches that provide connectivity for devices at the edge of the network.
* Aggregation Layer (Distribution Layer):
* The aggregation layer (also called the distribution layer) aggregates traffic from multiple access layer devices and applies policies such as filtering and QoS. It also provides redundancy and load balancing.
* Core Layer:
* The core layer provides high-speed connectivity between aggregation layer devices and facilitates traffic within the data center or between different network segments.
Juniper Reference:
* Legacy Hierarchical Design: Juniper networks often follow the traditional three-layer design (Access, Aggregation, and Core) to ensure scalability and high performance.

NEW QUESTION # 166
When considering bidirectional forwarding detection, which two statements are correct? (Choose two.)

A. You can configure BFD per interface within the protocol stanza.
B. The BFD operation always consists of minimum intervals and multipliers.
C. The BFD default multiplier is 5.
D. The BFD default minimum interval is 3.

Answer: A,B

Explanation:
Bidirectional Forwarding Detection (BFD)is a protocol used to detect faults in the forwarding path between two routers. It provides rapid failure detection, enhancing the performance of routing protocols like OSPF, BGP, and IS-IS.
Step-by-Step Breakdown:
* Per Interface Configuration:BFD can be configured on aper-interfacebasis within the protocol stanza (e.g., OSPF, BGP). This allows granular control over where BFD is enabled and the failure detection intervals for specific interfaces.
* Minimum Interval and Multiplier:BFD uses aminimum interval(the time between BFD control packets) and amultiplier(the number of missed packets before the path is declared down). The combination of these two defines the detection time for failures.
Juniper Reference:
* BFD Configuration: In Juniper, BFD is configurable within routing protocol stanzas, with the failure detection mechanism always based on minimum intervals and multipliers.

NEW QUESTION # 167
Which two statements are correct about rules for EBGP and IBGP? (Choose two.)

A. IBGP routes are more preferred than EBGP routes.
B. EBGP routes are more preferred than IBGP routes.
C. EBGP peers have a TTL of 255, while IBGP peers have a TTL of 1.
D. EBGP peers have a TTL of 1, while IBGP peers have a TTL of 255.

Answer: B,D

Explanation:
EBGP (External BGP)andIBGP (Internal BGP)operate with different rules due to the nature of their relationships.
Step-by-Step Breakdown:
* TTL Differences:
* EBGP: By default, EBGP peers have a TTL of 1, meaning they must be directly connected, or the TTL needs to be manually increased for multihop EBGP.
* IBGP: IBGP peers within the same AS have a TTL of 255, as they are expected to communicate over multiple hops within the AS.
* Preference for EBGP Routes:
* Routes learned viaEBGPare typically preferred over IBGP routes. This is because EBGP routes are considered more reliable since they originate outside the AS, while IBGP routes are internal.
Juniper Reference:
* BGP Configuration: The different handling of TTL and route preferences between EBGP and IBGP ensures proper route selection and security within Junos-based networks.

NEW QUESTION # 168
Which VLAN tagging method inserts a 4-byte tag into the Ethernet frame?

A. MPLS
B. Q-in-Q
C. ISL
D. Dot1Q

Answer: D

NEW QUESTION # 169
Which statement is correct about OSPF?

A. OSPF is a distance-vector protocol
B. OSPF is a path-vector protocol
C. OSPF is link-state protocol
D. OSPF is a device-state protocol

Answer: C

NEW QUESTION # 170
......

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