Two routers are establishing a BFD session. Router A sends a control packet with a 'My Discriminator' value of 100 and a 'Your Discriminator' value of 0. Router B responds with a 'My Discriminator' value of 200 and a 'Your Discriminator' value of 100. What does the 'Your Discriminator' value of 100 in Router B's response indicate?

Router B is acknowledging Router A's session

Router B is rejecting Router A's session

Router B is requesting a new session

Router B is setting its own discriminator

Which statement correctly describes the basic operation of BFD?

BFD requires a dedicated physical link between devices to function.

BFD uses a single hello packet to establish a session and then relies on the routing protocol to detect failures.

BFD only operates on physical interfaces and cannot be used on logical interfaces such as aggregated Ethernet.

BFD sends periodic control packets between two devices and declares a session down if a certain number of packets are missed.

Juniper NetworksCertified Associate, Data Center

Domain 5Objective 3

Bidirectional Forwarding Detection (BFD) JN0-281 Practice Questions (Page 2)

Part of the High Availability domain, which makes up ~21% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–13 in this domain), expect 1–3 from this objective — we provide 25 practice questions to prepare you well beyond it. (estimate)

25questions here

5free pages

6concepts

Questions 6–10

6foundation · easy
Which Junos CLI command displays the current state and timers of all BFD sessions?
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7application · medium
A data center network uses BFD on an OSPF adjacency between two spine switches. The network engineer wants to detect a link failure within 300 milliseconds. The transmit interval is set to 100 ms on both sides. What is the minimum detection multiplier that must be configured to meet this requirement?
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8expert · hard
Two routers are establishing a BFD session. Router A sends a control packet with a 'My Discriminator' value of 100 and a 'Your Discriminator' value of 0. Router B responds with a 'My Discriminator' value of 200 and a 'Your Discriminator' value of 100. What does the 'Your Discriminator' value of 100 in Router B's response indicate?
Select an answer first
9foundation · easy
Which statement correctly describes the basic operation of BFD?
Select an answer first
10application · medium
A service provider operates a network where BFD sessions are established between routers over a stable backbone. To reduce control-plane overhead, they want BFD to stop sending periodic control packets when the link is healthy, but still detect failures quickly when they occur. Which BFD mode should be used?
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Bidirectional Forwarding Detection (BFD) JN0-281 Practice Questions (Page 2)

Questions 6–10

Which Junos CLI command displays the current state and timers of all BFD sessions?

Which statement correctly describes the basic operation of BFD?

Keep studying — High Availability