A network engineer is troubleshooting a LAG that is not passing traffic. The 'show lacp interfaces' command shows that the LACP state is 'Current' on all member links. However, the 'show interfaces ae0' command shows that the aggregate interface is 'Down'. What is the most likely cause?

The member links are not physically connected

The aggregate interface has no logical unit configured

The hash algorithm is misconfigured

The peer switch is not configured with LACP

In the context of LAG, what is a 'member link'?

The logical interface that represents the entire LAG

A backup link that is activated only when the primary link fails

A virtual link created by the Link Aggregation Control Protocol

A physical interface that is part of a LAG bundle

What happens when LACP stops receiving LACPDUs from the peer on a member link?

The link is removed from the LAG and the remaining links continue to carry traffic

The link is placed in a blocking state by STP

The switch reboots to reinitialize the LAG

What is the primary purpose of a Link Aggregation Group (LAG) in a data center network?

To segment a single physical link into multiple logical channels

To combine multiple physical links into a single logical link, increasing bandwidth and providing redundancy

To create a single physical link that carries multiple VLANs

To provide a backup link that is used only when the primary link fails

Juniper NetworksCertified Associate, Data Center

Domain 5Objective 1

Link Aggregation Groups (LAG) JN0-281 Practice Questions (Page 5)

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)

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Questions 21–25

21expert · hard
A network engineer is troubleshooting a LAG that is not passing traffic. The 'show lacp interfaces' command shows that the LACP state is 'Current' on all member links. However, the 'show interfaces ae0' command shows that the aggregate interface is 'Down'. What is the most likely cause?
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22foundation · easy
In the context of LAG, what is a 'member link'?
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23foundation · easy
What happens when LACP stops receiving LACPDUs from the peer on a member link?
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24foundation · easy
What is the primary purpose of a Link Aggregation Group (LAG) in a data center network?
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25foundation · easy
What is the term for the logical interface that represents the entire LAG bundle in Junos OS?
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