QUIZ JUNIPER - JN0-280 - DATA CENTER, ASSOCIATE (JNCIA-DC)–RELIABLE DUMPS PDF

Quiz Juniper - JN0-280 - Data Center, Associate (JNCIA-DC)–Reliable Dumps PDF

Quiz Juniper - JN0-280 - Data Center, Associate (JNCIA-DC)–Reliable Dumps PDF

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The JN0-280 exam covers a wide range of topics related to data center networking, including data center architecture, data center networking concepts and design, virtualization technologies, storage technologies, and network infrastructure. JN0-280 exam consists of multiple-choice questions and is available in several languages, including English, Japanese, and Simplified Chinese. Passing the JN0-280 exam requires a deep understanding of data center networking technologies and the ability to apply that knowledge to real-world scenarios. Successful candidates will be able to demonstrate their proficiency in designing, implementing, and troubleshooting data center networks using Juniper Networks technologies.

Juniper JN0-280 exam is designed for IT professionals who are interested in demonstrating their expertise in data center networking. It is an associate-level certification exam that validates the knowledge and skills required to configure and troubleshoot Juniper Networks data center devices and technologies. JN0-280 Exam is also known as JNCIA-DC, which stands for Juniper Networks Certified Associate Data Center.

Juniper JN0-280: Data Center, Associate (JNCIA-DC) exam is an entry-level certification that validates the foundational knowledge required to install, configure, and manage Juniper Networks data center devices and technologies. Data Center, Associate (JNCIA-DC) certification is recognized globally and is highly respected in the industry. Passing the JNCIA-DC exam is a significant achievement for IT professionals seeking to build a career in data center technologies.

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Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q25-Q30):

NEW QUESTION # 25
Exhibit:

Referring to the exhibit, what is the route preference of the 172.25.11.254 next hop?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: B

Explanation:
In the exhibit, we see two next-hop addresses for the default static route (0.0.0.0/0):
* The first next hop is172.25.11.254, with no specified preference.
* The second next hop is172.25.11.200, with a specified preference of140.
Step-by-Step Breakdown:
* Default Static Route Preference:If no preference is explicitly set for a next hop in Junos, it defaults to5 for static routes.
* Determining Preference:In this case, the next hop172.25.11.254does not have an explicit preference defined, so it will use the default value of5. The second next hop has a preference of140, which is higher,meaning it will only be used if the primary next hop is unavailable.
Juniper Reference:
* Static Route Preference: In Junos, the default preference for static routes is5, and this value is applied unless overridden by the preference parameter.


NEW QUESTION # 26
Which OSPF router type connects an OSPF area to non-OSPF networks?

  • A. Autonomous System Boundary Router (ASBR)
  • B. Internal Router
  • C. Backbone Router
  • D. Area Border Router (ABR)

Answer: A


NEW QUESTION # 27
Exhibit:

Referring to the exhibit, at which interval will the interface be considered down if no hello packets are received?

  • A. 2000 seconds
  • B. 2000 milliseconds
  • C. 400 seconds
  • D. 400 milliseconds

Answer: B

Explanation:
The exhibit shows the configuration ofBidirectional Forwarding Detection (BFD)for OSPF on interface xe-
0/0/4.0, with the following parameters:
* minimum-interval: 400 milliseconds
* multiplier: 5
Step-by-Step Breakdown:
* BFD Liveness Detection:BFD is used to detect link failures at sub-second intervals, providing faster convergence times for routing protocols like OSPF. Theminimum-intervalis the time between BFD control packets (in milliseconds), and themultiplierindicates how many missed BFD packets trigger a failure.
* Calculating Failure Detection Time:The failure detection interval is calculated as:
Failure Interval=minimum-interval×multipliertext{Failure Interval} = text{minimum-interval} times text
{multiplier}Failure Interval=minimum-interval×multiplier
In this case:
400 milliseconds×5=2000 milliseconds(2seconds)400 , text{milliseconds} times 5 = 2000 , text
{milliseconds} (2 seconds)400milliseconds×5=2000milliseconds(2seconds)
* Conclusion:If no BFD control packets are received within2000 milliseconds (2 seconds), the interface will be considered down, triggering OSPF to recalculate routes.
Juniper Reference:
* BFD Configuration: BFD parameters such as minimum-interval and multiplier are used to fine-tune the failure detection time for faster convergence.


NEW QUESTION # 28
When a MAC limiting violation occurs, the switch performs which two actions by default? (Choose two.)

  • A. The port is disabled.
  • B. No logging takes place.
  • C. It causes Layer 2 loops.
  • D. It drops the packet.

Answer: A,D

Explanation:
When aMAC limiting violationoccurs on a Juniper switch, the switch will perform the following actions by default:
Step-by-Step Breakdown:
* Port Disabled:When the number of MAC addresses on an interface exceeds the configured limit, the port isautomatically disabledto prevent further violations. This is a protective mechanism to prevent MAC address flooding.
* Packet Dropped:Additionally, packets from the violating MAC address aredroppedto prevent any further communication from that address. This ensures that only valid MAC addresses are allowed to communicate through the interface.
* Example Configuration:
set ethernet-switching-options secure-access-port interface <interface-name> mac-limit 5
* If more than five MAC addresses are learned, the port is disabled, and excess packets are dropped.
Juniper Reference:
* MAC Limiting: When the switch detects a MAC limiting violation, it disables the port and drops further packets from the violating MAC addresses to maintain network security.


NEW QUESTION # 29
What is a common issue to check for when troubleshooting a LAG not forming correctly?

  • A. Overutilization of CPU resources
  • B. Mismatched VLAN configurations
  • C. Identical IP addresses on all LAG interfaces
  • D. Excessive broadcast traffic

Answer: B


NEW QUESTION # 30
......

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