Free Juniper JN0-280 Exam Dumps Questions & Answers

What roles do the Designated Router (DR) and Backup Designated Router (BDR) play in OSPF?

• A.  They are responsible for generating LSAs for external routes.
• B.  They determine the shortest path first algorithm.
• C.  They redistribute routes between OSPF and non-OSPF networks.
• D.  They reduce the number of adjacencies on broadcast networks.

Which of the following are correct about OSPF router ID selection? (Choose two)

• A.  It is always the IP address of the loopback interface.
• B.  It is selected based on the lowest MAC address.
• C.  It is chosen based on the highest IP address of any active interface by default.
• D.  It can be manually configured.

What is a key characteristic of traditional multi-tier data center architectures?

• A.  They consist of a modular, scalable design.
• B.  They exclusively use Layer 3 routing.
• C.  They are organized in a hierarchical model with distinct layers.
• D.  They primarily use a flat network design.

Which two statement are correct about trunk ports? (Choose two.)

• A.  Trunk ports typically connect to other switches and routers.
• B.  By default, trunk ports can transmit and receive VLAN tagged traffic.
• C.  Trunk ports typically connect to end users and servers.
• D.  By default, trunk ports can transmit and receive untagged traffic.

Which OSPF packet types are used to establish and maintain neighbor relationships? (Choose two)

• A.  Link State Update packets
• B.  Database Description packets
• C.  Hello packets
• D.  Link State Request packets