[Sep-2025] Practice Juniper JN0-280 exam. Online Exam Practice Tests with detailed explanations! Pass JN0-280 with confidence! [Q86-Q107]

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Practice JNCIA-DC JN0-280 exam. Online Exam Practice Tests with detailed explanations! Pass JN0-280 with confidence!

JN0-280 – Data Center, Associate (JNCIA-DC) Practice Tests 2025 | DumpsReview

NO.86 Which of the following statements are true regarding Graceful Restart (GR)? (Choose two)

It helps in maintaining uninterrupted forwarding during a routing process restart.

It is used to increase the convergence time of the network.

It requires support from both the restarting router and its neighbors.

It decreases network stability during protocol restarts.

NO.87 Under which Junos hierarchy is a static route configured?

system

routing-instances

routing-options

protocols

NO.88 What is a common issue to check for when troubleshooting a LAG not forming correctly?

Mismatched VLAN configurations

Excessive broadcast traffic

Identical IP addresses on all LAG interfaces

Overutilization of CPU resources

NO.89 How does OSPF calculate the best path to a particular prefix?

It finds the path with the numerically lowest cost.

It finds the path with the shortest autonomous system path.

It finds the path with the least number of hops.

It finds the path with the numerically lowest route preference.

NO.90 What are two common reasons for BGP routes to be in the hidden state? (Choose two.)

Routes are being rejected by a policy

Routes are being filtered from the inet.2 routing table

The next hop is unresolvable

The BGP neighbor is in a different autonomous system

NO.91 Exhibit:

R2 received an OSPF update from R1, and it received the same update from R3.
Referring to the exhibit, what will R2 do?

R2 ignores the update from R1.

R2 does nothing with R3’s update.

R2 ignores the update from R3.

R2 acknowledges R3 and discards it.

NO.92 What is the default route preference of a static route in the Junos OS?

NO.93 Which signaling protocol is used for EVPN?

OSPF

PIM

IS-IS

BGP

NO.94 What is the primary use of Martian addresses in network routing?

To define addresses used for multicasting.

To identify addresses that should be excluded from routing.

To configure virtual IP addresses for load balancing.

To create a backup routing plan.

NO.95 When considering bidirectional forwarding detection, which two statements are correct? (Choose two.)

The BFD default minimum interval is 3.

You can configure BFD per interface within the protocol stanza.

The BFD operation always consists of minimum intervals and multipliers.

The BFD default multiplier is 5.

NO.96 When a MAC limiting violation occurs, the switch performs which two actions by default? (Choose two.)

No logging takes place.

It causes Layer 2 loops.

The port is disabled.

It drops the packet.

NO.97 Which static routing parameter will silently drop the packet if it is set as the next hop?

Reject

Resolve

Readvertise

Discard

NO.98 When configuring BGP, which command is commonly used to define a BGP neighbor?

bgp set neighbor

neighbor <IP_ADDRESS> remote-as <AS_NUMBER>

set bgp peer

add bgp connection

NO.99 Which statement is correct about an IP fabric?

Transit traffic is passed through the network based on the original frame’s destination MAC address.

Load sharing is provided by the routing protocol used.

Loop prevention is provided by the underlying spanning tree protocol used.

The entire IP fabric is one large broadcast domain.

NO.100 What is the behavior of the default export policy for OSPF?

Accept all routes.

Reject all routes.

Redistribute all routes.

Forward all routes.

NO.101 BGP is primarily used for which purpose in a network?

Internal routing within a single autonomous system

Connecting different autonomous systems and route sharing

Providing Layer 2 connectivity

Encrypting data traffic between networks

NO.102 What roles do the Designated Router (DR) and Backup Designated Router (BDR) play in OSPF?

They redistribute routes between OSPF and non-OSPF networks.

They are responsible for generating LSAs for external routes.

They reduce the number of adjacencies on broadcast networks.

They determine the shortest path first algorithm.

NO.103 Which statement is correct about per-flow load balancing?

Packets associated with the same flow are sent through different egress ports.

The packets are guaranteed to arrive at their destination in a different order in which they were sent.

Packets associated with the same flow are sent through the same egress port.

The packets are guaranteed to arrive at their destination in the same order in which they were sent.

NO.104 Which operation mode command will display the mapping between the VLAN ID and ports on a switch?

show route

show ethernet-switching table

show interfaces terse

show vlans

NO.105 What is the primary purpose of OSPF in network routing?

To redistribute routes between autonomous systems.

To provide path vector routing within an autonomous system.

To offer dynamic routing within an autonomous system using link-state information.

To encrypt data traffic between different networks.

NO.106 Which BGP message type is used to establish peering sessions?

Update

Notification

Open

Keepalive

NO.107 Filter-based forwarding is typically used to:

Increase the security of the routing process.

Implement policy-based routing decisions.

Optimize the routing table size.

Automatically generate routing entries.

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[Sep-2025] Practice Juniper JN0-280 exam. Online Exam Practice Tests with detailed explanations! Pass JN0-280 with confidence! [Q86-Q107]

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