JN0-280 exam

What is the primary role of an IRB interface in a VLAN configuration?A . To provide a gateway for VLAN traffic.B . To encrypt VLAN traffic.C . To prioritize VLAN traffic.D . To filter VLAN traffic based on MAC addresses.View AnswerAnswer: A

Which of the following is an important consideration when configuring BFD?A . Setting a very high multiplier to avoid false positivesB . Using the same BFD interval on all devices in the networkC . Adjusting the BFD interval and multiplier according to network needsD . Disabling all other failure detection...

EVPN/VXLAN is primarily used in modern data centers to:A . Increase the physical distance between data centers.B . Provide Layer 2 connectivity over a Layer 3 network.C . Replace traditional routing protocols.D . Enhance the physical security of the data center.View AnswerAnswer: B

What happens if a frame with a known destination MAC address enters a switch?A . The egress PFE performs a MAC address lookup and determines the ingress PFE and port.B . The ingress PFE sends the header information to the RE.C . The ingress PFE performs a MAC address lookup...

What does the “qualified-next-hop” feature do when configuring a static route?A . It allows you to specify an independent route preference value for an additional next hop.B . It specifies the IP address of the directly connected device.C . It instructs the device to verify the next-hop is reachable before...

What is the primary purpose of MAC address filtering on a switch?A . To control the flow of encrypted data.B . To limit the rate of incoming packets.C . To prevent unauthorized devices from accessing the network.D . To distribute traffic evenly across multiple links.View AnswerAnswer: C

What is the purpose of using route reflectors in BGP?A . To encrypt BGP messagesB . To reduce the number of required IBGP sessions in a networkC . To increase the speed of BGP convergenceD . To automatically select the best routeView AnswerAnswer: B

Which two statements are correct about aggregated Ethernet bundles? (Choose two.)A . You must enable the chassis to support aggregated Ethernet interfaces.B . You must purchase a services license for the chassis to support aggregate Ethernet interfaces.C . You must specify which interfaces are members of a specific aggregated Ethernet...

In the context of Ethernet bridging on Junos devices, what is the purpose of the Spanning Tree Protocol (STP)?A . To prevent routing loops.B . To provide a mechanism for VLAN tagging.C . To prevent Layer 2 switching loops.D . To filter MAC addresses.View AnswerAnswer: C

Which statement is correct about a five-stage IP fabric topology?A . There is a maximum of five hops between any end-devicesB . They are commonly referred to as interconnected data centersC . There is a maximum of three hops between any end-devicesD . They are typically deployed in small to...