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- Total Questions: 197
- Updated on: Oct 26, 2026
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New versions of the Juniper Data Center, Associate (JNCIA-DC) bank are released periodically after careful review, so the 197 practice questions you download in 2026 reflect the current exam rather than an old snapshot.
Juniper JN0-281 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Layer 2 Switching and VLANs | 20% | - VLAN configuration and operation - Link aggregation (LACP) - Layer 2 security features - Spanning Tree Protocol (STP) and variants - Ethernet switching concepts |
| High Availability | 10% | - Virtual Chassis and MC-LAG - Graceful restart and non-stop routing - Redundancy concepts |
| Security, Automation and Management | 15% | - Junos automation fundamentals - Management and monitoring tools - Data center security basics |
| Protocol-Independent Routing | 15% | - Load balancing and route preference - Static routes - Routing table and routing instances - Routing policy and firewall filters |
| Data Center Architectures | 20% | - EVPN-VXLAN fundamentals - Layer 2 vs Layer 3 deployment models - IP fabric architectures (spine-leaf) - Overlay and underlay networks - Traditional multi-tier architectures |
| Data Center Routing Protocols | 20% | - BGP protocol fundamentals - OSPF protocol operation and configuration - Route redistribution - Routing in EVPN-VXLAN environments |
Common Juniper Data Center, Associate (JNCIA-DC) Questions from Candidates
JN0-281 is passed with 60% - 70% (approximate, variable), and the official exam fee is $200 USD. Fixing these numbers early helps you set a measurable practice target.
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The package includes 197 practice questions for the JN0-281 exam. The count is set through analysis of a large volume of data, so the set matches the scope of the real test without padding.
- Security, Automation and Management (15%)
- High Availability (10%)
- Protocol-Independent Routing (15%)
Divide your time according to each topic's weight.
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No formal prerequisites; basic knowledge of Junos OS and data center networking recommended
Juniper Data Center, Associate (JNCIA-DC) Sample Questions:
Exhibit:
Referring to the exhibit, which two statements are correct about default BGP advertisements? (Choose two.)
- A. When routes advertised by the SP router are received by router2, they will contain the next-hop address of the SP router.
- B. When routes advertised by router2 are received by the SP router, they will contain the next-hop address of router2.
- C. When routes advertised by router2 are received by the SP router, they will contain the next-hop address of router1.
- D. When routes advertised by the SP router are received by router2, they will contain the next-hop address of router1.
Correct Answer: C,D 🗳️
Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).
In Junos, which command is used to display the status of all interfaces?
- A. show ethernet-switching table
- B. show interfaces descriptions
- C. show interfaces terse
- D. show vlan brief
Correct Answer: C 🗳️
You are troubleshooting a downed BGP session.
Referring to the exhibit, what is the cause of the problem?
- A. The local peer has sent an Update message but not received one from the remote peer.
- B. The local peer has sent an Open message but not received one from the remote peer.
- C. The TCP session between the peers has not been established.
- D. The UDP session between the peers has not been established.
Correct Answer: C 🗳️
Explanation: Only visible for Lead2PassExam members. You can sign-up / login (it's free).
What protocol and port does BGP use for control plane communication?
- A. protocol UDP, port 159
- B. protocol UDP, port 179
- C. protocol TCP, port 179
- D. protocol TCP, port 159
Correct Answer: C 🗳️
Which two statement are correct about trunk ports? (Choose two.)
- A. By default, trunk ports can transmit and receive VLAN tagged traffic.
- B. By default, trunk ports can transmit and receive untagged traffic.
- C. Trunk ports typically connect to end users and servers.
- D. Trunk ports typically connect to other switches and routers.
Correct Answer: A,D 🗳️
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