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Juniper JN0-280 certification exam is an entry-level certification that is designed to validate the skills and knowledge of a candidate in the field of data center technologies. It is also known as the Data Center, Associate (JNCIA-DC) certification exam. Passing JN0-280 exam will demonstrate that the candidate has a strong foundation in data center concepts, architectures, and technologies.
The Juniper JN0-280 exam consists of 65 multiple-choice questions and candidates have a total of 90 minutes to complete it. JN0-280 exam covers a wide range of topics, including data center architecture, virtualization, switching, routing, and security. Candidates who pass the exam will be awarded the Juniper Networks Certified Associate - Data Center (JNCIA-DC) certification, which is recognized as a valuable credential in the IT industry.
NEW QUESTION # 32
What is the primary use of a virtual link in OSPF?
- A. To encrypt OSPF traffic.
- B. To connect an OSPF area to the backbone area through a non-backbone area.
- C. To connect OSPF areas to external networks.
- D. To balance load across multiple links.
Answer: B
NEW QUESTION # 33
How does a layer 2 switch populate its bridge table?
- A. It stores both the source and destination MAC addresses of frames traversing the network.
- B. It stores the destination MAC address of frames traversing the network.
- C. It stores the source MAC address of frames traversing the network.
- D. It stores the protocol number of frames traversing the network.
Answer: C
NEW QUESTION # 34
VLANs help in reducing which of the following? (Choose two)
- A. Collision domains
- B. Encryption requirements
- C. Routing complexity
- D. Broadcast domains
Answer: A,D
NEW QUESTION # 35
Why is EVPN often used in conjunction with VXLAN in modern data centers?
- A. To increase the physical bandwidth of the underlying network.
- B. To physically separate different customer environments.
- C. For providing Layer 2 connectivity over a Layer 3 fabric.
- D. To enable direct Internet access for applications.
Answer: C
NEW QUESTION # 36
What is the default Junos behavior of access ports?
- A. Allow a maximum of 80 percent untagged traffic
- B. Allow both tagged and untagged traffic
- C. Allow only untagged traffic
- D. Allow only tagged traffic
Answer: C
NEW QUESTION # 37
Which statement is correct about OSPF?
- A. OSPF is a path-vector protocol
- B. OSPF is a distance-vector protocol
- C. OSPF is a device-state protocol
- D. OSPF is link-state protocol
Answer: D
NEW QUESTION # 38
When configuring MAC address filtering on a Junos switch, which feature is primarily used?
- A. Access Control Lists (ACLs)
- B. Port security
- C. Firewall filters
- D. RADIUS
Answer: B
NEW QUESTION # 39
Load balancing in routing is used to:
- A. Compress data to improve transmission speed.
- B. Encrypt data packets.
- C. Automatically update routing tables.
- D. Distribute traffic evenly across multiple paths.
Answer: D
NEW QUESTION # 40
In OSPF, what is the function of the Link-State Database (LSDB)?
- A. To store OSPF routing tables.
- B. To log changes in network topology.
- C. To keep the topology structure of the network.
- D. To maintain a list of OSPF neighbors.
Answer: C
NEW QUESTION # 41
Which EBGP feature must be used when peering to a non-directly connected peer address?
- A. multipath
- B. local preference
- C. multihop
- D. AS path
Answer: C
NEW QUESTION # 42
What is the primary purpose of MAC address filtering on a switch?
- A. To control the flow of encrypted data.
- B. To prevent unauthorized devices from accessing the network.
- C. To distribute traffic evenly across multiple links.
- D. To limit the rate of incoming packets.
Answer: B
NEW QUESTION # 43
Which of the following statements are true regarding Graceful Restart (GR)? (Choose two)
- A. It decreases network stability during protocol restarts.
- B. It is used to increase the convergence time of the network.
- C. It requires support from both the restarting router and its neighbors.
- D. It helps in maintaining uninterrupted forwarding during a routing process restart.
Answer: C,D
NEW QUESTION # 44
Generated routes in a network are mainly used to:
- A. Summarize external routes into the network.
- B. Manually configure specific network routes.
- C. Reduce the overall size of the routing table.
- D. Automatically create a route when a specified condition is met.
Answer: D
NEW QUESTION # 45
In a traditional multi-tier architecture, which layer is responsible for aggregating access layers and providing connectivity to the core layer?
- A. Edge Layer
- B. Access Layer
- C. Distribution Layer
- D. Core Layer
Answer: C
NEW QUESTION # 46
Which two statement are correct about trunk ports? (Choose two.)
- A. Trunk ports typically connect to other switches and routers.
- B. Trunk ports typically connect to end users and servers.
- C. By default, trunk ports can transmit and receive untagged traffic.
- D. By default, trunk ports can transmit and receive VLAN tagged traffic.
Answer: A,D
NEW QUESTION # 47
Which statement is correct about a five-stage IP fabric topology?
- A. They are commonly referred to as interconnected data centers
- B. They are typically deployed in small to medium data centers
- C. There is a maximum of three hops between any end-devices
- D. There is a maximum of five hops between any end-devices
Answer: D
NEW QUESTION # 48
In networking, what is a RIB group primarily used for?
- A. To filter routes based on specific criteria
- B. To dynamically generate routing entries
- C. To group multiple Routing Information Bases together for a common purpose
- D. To balance the load across multiple links
Answer: C
NEW QUESTION # 49
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