Juniper JN0-281 Practice Exams
Last updated on Apr 03,2025- Exam Code: JN0-281
- Exam Name: Data Center, Associate (JNCIA-DC)
- Certification Provider: Juniper
- Latest update: Apr 03,2025
In the Junos OS, what is the default behavior of a switch when it receives a frame with an unknown destination MAC address?
- A . It discards the frame.
- B . It floods the frame out of all ports except the one it was received on.
- C . It sends the frame to its default gateway.
- D . It buffers the frame until the MAC address can be learned.
What protocol and port does BGP use for control plane communication?
- A . protocol TCP, port 179
- B . protocol UDP, port 179
- C . protocol TCP, port 159
- D . protocol UDP, port 159
In OSPF, which command is commonly used to monitor neighbor relationships?
- A . show ip ospf neighbors
- B . show ospf database
- C . show ip route ospf
- D . show ospf interfaces
What is the main advantage of using MACsec?
- A . It increases the speed of the network.
- B . It provides Layer 2 encryption for data confidentiality and integrity.
- C . It creates multiple virtual networks over a single physical infrastructure.
- D . It allows for the use of longer cable runs.
Which statement is correct about the OSPF link-state database?
- A . Each router within the same area must maintain a unique copy of the link-state database.
- B . Each router within the same area must maintain an identical copy of the link-state database.
- C . Each router within the OSPF domain must maintain a unique copy of the link-state database.
- D . Each router within the OSPF domain must maintain an identical copy of the link-state database.
Which two statements describe an OSPF ABR? (Choose two.)
- A . By default, an ABR does not need to have any links in the backbone area.
- B . By default, an ABR is an OSPF router with links in two areas.
- C . By default, an ABR is an OSPF router with all of its links in one area.
- D . By default, an ABR must have one link in the OSPF backbone area.
Which two prefixes are contributing routes to a 10.20.0.0/18 aggregate route? (Choose two)
- A . 10.20.0.0/24
- B . 10.20.60.0/23
- C . 10.20.0.0/16
- D . 10.20.100.0/24
Referring to the exhibit, what needs to be done to make this a valid IP fabric?
- A . Remove the connection between the leaf nodes
- B . Remove one of the redundant links between a leaf node and a spine node
- C . Add two connections between the spine nodes
- D . Add a connection between the spine nodes
Which LSA types are associated with OSPF? (Choose three)
- A . Router LSA (Type 1)
- B . Network LSA (Type 2)
- C . Summary LSA (Type 3)
- D . External LSA (Type 5)
Referring to the exhibit, how many milliseconds will pass before the BGP neighbor is considered dead?
- A . 1000ms
- B . 9000ms
- C . 2000ms
- D . 3000ms