JN0-280 Practice Juniper Verified Answers - Pass Your Exams For Sure! [2024]
Valid Way To Pass JNCIA-DC's JN0-280 Exam
NEW QUESTION # 56
What is the function of the 'Weight' attribute in BGP, and where is it used in the route selection process?
- A. It is used to prioritize routes received from different EBGP peers and is considered before the AS_PATH attribute.
- B. It is used to balance load among multiple links and is considered after the MED attribute.
- C. It determines the stability of a route and is checked after the Local Preference attribute.
- D. It is a Cisco-specific attribute used to prefer paths from one BGP speaker over another, evaluated before the Local Preference.
Answer: D
NEW QUESTION # 57
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 and determines the egress PFE and port.
- D. The MAC address is added to the bridge table.
Answer: C
NEW QUESTION # 58
BGP is primarily used for which purpose in a network?
- A. Internal routing within a single autonomous system
- B. Providing Layer 2 connectivity
- C. Encrypting data traffic between networks
- D. Connecting different autonomous systems and route sharing
Answer: D
NEW QUESTION # 59
What does MACsec stand for?
- A. Media Access Control Sublayer Encryption
- B. MAC Sublayer Encryption
- C. Media Access Control Security
- D. MAC Security
Answer: C
NEW QUESTION # 60
Which LSA types are associated with OSPF? (Choose three)
- A. External LSA (Type 5)
- B. Router LSA (Type 1)
- C. Network LSA (Type 2)
- D. Summary LSA (Type 3)
Answer: B,C,D
NEW QUESTION # 61
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 filter MAC addresses.
- D. To prevent Layer 2 switching loops.
Answer: D
NEW QUESTION # 62
Which OSPF packet types are used to establish and maintain neighbor relationships? (Choose two)
- A. Hello packets
- B. Database Description packets
- C. Link State Request packets
- D. Link State Update packets
Answer: A,B
NEW QUESTION # 63
What is the main advantage of using MACsec?
- A. It provides Layer 2 encryption for data confidentiality and integrity.
- B. It allows for the use of longer cable runs.
- C. It creates multiple virtual networks over a single physical infrastructure.
- D. It increases the speed of the network.
Answer: A
NEW QUESTION # 64
How does a layer 2 switch populate its bridge table?
- A. It stores the source MAC address of frames traversing the network.
- B. It stores both the source and destination MAC addresses of frames traversing the network.
- C. It stores the protocol number of frames traversing the network.
- D. It stores the destination MAC address of frames traversing the network.
Answer: A
NEW QUESTION # 65
Which of the following are functions of MACsec? (Choose two)
- A. It prevents MAC flooding attacks.
- B. It offers data integrity and confidentiality.
- C. It enables VLAN tagging.
- D. It provides Layer 2 encryption.
Answer: B,D
NEW QUESTION # 66
How can OSPF be configured to prefer one route over another?
- A. By configuring route redistribution.
- B. By setting a lower cost on the preferred route.
- C. By setting a higher cost on the preferred route.
- D. By adjusting interface bandwidth.
Answer: B
NEW QUESTION # 67
When configuring OSPF, what is the purpose of defining areas?
- A. To provide network redundancy.
- B. To specify different encryption methods.
- C. To assign different IP address ranges.
- D. To control route advertisement and manage traffic.
Answer: D
NEW QUESTION # 68
What does filter-based forwarding in networking typically allow?
- A. Forwarding decisions based on MAC addresses
- B. Load balancing across multiple CPUs
- C. Aggregation of multiple routes into a single entry
- D. Routing decisions based on extended criteria like packet headers
Answer: D
NEW QUESTION # 69
Why is EVPN often used in conjunction with VXLAN in modern data centers?
- A. To physically separate different customer environments.
- B. For providing Layer 2 connectivity over a Layer 3 fabric.
- C. To enable direct Internet access for applications.
- D. To increase the physical bandwidth of the underlying network.
Answer: B
NEW QUESTION # 70
Which type of route is used to represent a summary of multiple smaller networks?
- A. Aggregate route
- B. Generated route
- C. Static route
- D. Dynamic route
Answer: A
NEW QUESTION # 71
Which of the following statements are true regarding Graceful Restart (GR)? (Choose two)
- A. It decreases network stability during protocol restarts.
- B. It requires support from both the restarting router and its neighbors.
- C. It is used to increase the convergence time of the network.
- D. It helps in maintaining uninterrupted forwarding during a routing process restart.
Answer: B,D
NEW QUESTION # 72
In OSPF, what is the function of the Link-State Database (LSDB)?
- A. To maintain a list of OSPF neighbors.
- B. To store OSPF routing tables.
- C. To keep the topology structure of the network.
- D. To log changes in network topology.
Answer: C
NEW QUESTION # 73
What does the qualified-next-hop feature do when configuring a static route?
- A. It instructs the device to looks up a static route s next-hop that is not directly connected.
- B. It specifies the IP address of the directly connected device.
- C. It allows you to specify an independent route preference value for an additional next hop.
- D. It instructs the device to verify the next-hop is reachable before activating the route.
Answer: C
NEW QUESTION # 74
You have configured a load balancing policy.
Which statement is correct about applying the policy?
- A. The policy is applied as an export policy under routing-options forwarding table.
- B. The policy is applied as an export policy under the routing protocol s hierarchy.
- C. The policy is applied as an import policy under the routing protocol s hierarchy.
- D. The policy is applied as an import policy under routing-options forwarding table.
Answer: A
NEW QUESTION # 75
What is a common issue to check for when troubleshooting a LAG not forming correctly?
- A. Excessive broadcast traffic
- B. Mismatched VLAN configurations
- C. Identical IP addresses on all LAG interfaces
- D. Overutilization of CPU resources
Answer: B
NEW QUESTION # 76
In the context of data center networking, what is the primary purpose of an Underlay Network?
- A. To handle external network connections exclusively.
- B. To provide a physical infrastructure for an Overlay Network.
- C. To encrypt data traffic between servers.
- D. To facilitate virtual machine migrations.
Answer: B
NEW QUESTION # 77
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