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Test JN0-280 Collection & Latest JN0-280 Exam Questions
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Juniper JN0-280 certification program is recognized globally and is highly valued by employers in the IT industry. Data Center, Associate (JNCIA-DC) certification program provides candidates with the knowledge and skills required to design, deploy, and manage data center networks efficiently. Moreover, it provides a solid foundation for candidates who wish to pursue higher-level certifications in data center networking, such as the Juniper Networks Certified Specialist Data Center (JNCDS-DC) or the Juniper Networks Certified Expert Data Center (JNCIE-DC).
Juniper JN0-280 Data Center, Associate (JNCIA-DC) certification is an entry-level certification that is suitable for network professionals who are just starting their career in data center networking. Data Center, Associate (JNCIA-DC) certification exam is designed to test the candidates' knowledge of data center technologies, including data center architecture, data center networking concepts, and Juniper Networks data center products. Data Center, Associate (JNCIA-DC) certification exam is also designed to validate the candidates' understanding of basic network operations, including network troubleshooting, network monitoring, and network security.
The JN0-280 Certification Exam is a popular choice among IT professionals who want to enhance their knowledge and skills in data center technologies. Data Center, Associate (JNCIA-DC) certification is recognized globally and is highly valued by employers in the IT industry. Data Center, Associate (JNCIA-DC) certification is ideal for IT professionals who want to pursue a career in data center technologies and want to demonstrate their proficiency in Juniper Networks devices and technologies.
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Juniper Data Center, Associate (JNCIA-DC) Sample Questions (Q156-Q161):
NEW QUESTION # 156
Which of the following are true about Layer 2 and Layer 3 strategies in data center architectures? (Choose two)
Answer: A,D
NEW QUESTION # 157
What is the function of the 'Weight' attribute in BGP, and where is it used in the route selection process?
Answer: B
NEW QUESTION # 158
When a MAC limiting violation occurs, the switch performs which two actions by default? (Choose two.)
Answer: B,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 # 159
Which statement is correct about aggregate routes?
Answer: D
Explanation:
An aggregate route is a summarized route that is created by combining multiple specific routes into a single, broader route. In Junos OS, when an aggregate route is configured, its default next hop is set toreject.
Step-by-Step Explanation:
* Aggregate Route:Aggregate routes are used to reduce the size of routing tables by representing a collection of more specific routes with a single summary route. They help improve routing efficiency and scalability, especially in large networks.
* Default Next Hop Behavior:
* When you configure an aggregate route in Junos OS, it has arejectnext hop by default.
* Therejectnext hop means that if a packet matches the aggregate route but there is no more specific route in the routing table for that destination, the packet will be discarded, and an ICMP
"destination unreachable" message is sent to the source.
* This behavior helps to prevent routing loops and ensures that traffic isn't forwarded to destinations for which there is no valid route.
* Modifying Next Hop:If needed, the next hop behavior of an aggregate route can be changed todiscard (which silently drops the packet) or to another specific next hop. However, by default, the next hop is set toreject.
Juniper Reference:
* Junos Command: set routing-options aggregate route <route> reject to configure an aggregate route with a reject next hop.
* Verification: Use show route to verify the presence and behavior of aggregate routes.
NEW QUESTION # 160
Which signaling protocol is used for EVPN?
Answer: B
Explanation:
EVPN (Ethernet Virtual Private Network)is a standard protocol used for building Layer 2 and Layer 3 VPNs over an IP or MPLS network. Thesignaling protocolused for EVPN isBGP(Border Gateway Protocol).
Step-by-Step Breakdown:
* BGP as the EVPN Signaling Protocol:EVPN uses BGP to exchange MAC address reachability information between routers (PE devices). This enables devices to learn which MAC addresses are reachable through which PE devices, facilitating Layer 2 forwarding across an IP or MPLS core.
* BGP Extensions for EVPN:BGP is extended with new address families (e.g., EVPN NLRI) to carry both MAC and IP address information, allowing for scalable and efficient multi-tenant network solutions.
Juniper Reference:
* Junos EVPN Configuration: Juniper uses BGP as the control plane for EVPN to exchange MAC and IP route information between different data center devices.
NEW QUESTION # 161
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