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Juniper JN0-281考證 & JN0-281套裝

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Juniper JN0-281 考試大綱：

主題
簡介

主題 1

Layer 2 Switching and VLANs: This section of the exam measuresthe skills of a Network Support Engineer and covers the essential concepts of Layer 2 switching operations within Junos OS. It includes an overview of Ethernet switching and bridging, providing an understanding of how Layer 2 networks function. The section also introduces VLAN concepts, focusing on port modes, VLAN tagging methods, and the purpose of Integrated Routing and Bridging (IRB). It further explores the practical side by addressing how to configure, monitor, and troubleshoot both Layer 2 switching and VLANs.

主題 2

Data Center Architectures: This section of the exam measures the skills of a Data Center Architect and covers foundational knowledge about various data center designs. It includes traditional multitier architectures as well as more modern IP fabric architectures using spine-leaf topologies. The section also touches on Layer 2 and Layer 3 strategies for forwarding traffic, the differences between overlay and underlay networks, and introduces Ethernet VPN–Virtual Extensible LAN (EVPN-VXLAN), explaining its basic purpose and role in data center environments.

主題 3

Data Center Routing Protocols BGP
OSPF: This section of the exam measures skills of a Network Operations Specialist and covers the operation and key concepts of the OSPF protocol. It explains elements such as the link-state database, OSPF packet types, and router IDs, including how adjacencies and designated routers work within areas. The section then transitions to BGP, outlining its basic operations, message types, attributes, and the path selection process. It also discusses both IBGP and EBGP roles. Lastly, the section reviews how to configure, monitor, and troubleshoot OSPF and BGP using routing policies and various tools.

主題 4

Protocol-Independent Routing: This section of the exam measures the skills of a Routing Engineer and covers routing features that function independently of any specific protocol. It includes static, aggregate, and generated routes, along with the concept of martian addresses. Routing instances and Routing Information Base (RIB) groups are introduced, as well as techniques like load balancing and filter-based forwarding. Configuration, monitoring, and troubleshooting aspects of these routing components are also covered in this section.

主題 5

High Availability: This section of the exam measures the skills of a Data Center Reliability Engineer and covers strategies to ensure continuous network availability. It includes features like Link Aggregation Groups (LAG), Graceful Restart (GR), Bidirectional Forwarding Detection (BFD), and Virtual Chassis. It also provides a basic understanding of how to configure, monitor, and troubleshoot each of these high-availability components to maintain resilient network performance.

>> Juniper JN0-281考證 <<

Juniper JN0-281套裝 - JN0-281考試重點

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最新的 JNCIA-DC JN0-281 免費考試真題 (Q183-Q188):

問題 #183
In the context of protocol-independent routing, what is the main difference between static and generated routes?

A. Generated routes are manually configured, while static routes are automatically created.
B. Generated routes support summarization, while static routes do not.
C. Static routes require manual configuration, while generated routes are created dynamically.
D. Static routes are used for load balancing, while generated routes are not.

答案：C

問題 #184
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 perform deep packet inspection.
D. To interconnect different data centers.

答案：B

問題 #185
When troubleshooting issues with static routes, what is a key factor to check first?

A. The speed of the router's CPU
B. If the routing table has enough memory
C. The number of aggregate routes configured
D. The correctness of the specified next-hop addresses

答案：D

問題 #186
What happens if a frame with a known destination MAC address enters a switch?

A. The MAC address is added to the bridge table.
B. The ingress PFE sends the header information to the RE.
C. The egress PFE performs a MAC address lookup and determines the ingress PFE and port.
D. The ingress PFE performs a MAC address lookup and determines the egress PFE and port.

答案：D

問題 #187
In OSPF, how is the Router ID determined?

A. By the highest IP address on any of the router's active interfaces.
B. By a manually configured value in the router configuration.
C. By the highest loopback interface IP address.
D. By the lowest MAC address of the router.

答案：C

問題 #188
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