How does a switch distribute traffic across the member links of a LAG?

It uses a hash algorithm based on packet fields to select a member link for each flow

It uses the Spanning Tree Protocol to select the least congested link

It sends packets in a round-robin fashion across all member links

It sends all traffic on the first available link and uses others only for failover

A LAG between two switches is experiencing intermittent packet loss. The 'show lacp interfaces' command shows that one member link is flapping between 'Current' and 'Detached' states. What is the most likely cause?

The link is experiencing physical layer issues, such as a faulty cable or transceiver

The peer switch has a different LACP system priority

The hash algorithm is misconfigured

The LAG has too many member links

An administrator is configuring a LAG between a Juniper switch and a third-party switch. The third-party switch only supports LACP in passive mode. What must the administrator configure on the Juniper switch to ensure the LAG forms?

Configure LACP in passive mode on the Juniper switch

Configure the Juniper switch as the LACP system priority

Disable LACP and use a static LAG

Configure LACP in active mode on the Juniper switch

A data center has a LAG with three member links between two switches. One of the member links fails due to a faulty transceiver. What happens to the traffic that was using the failed link?

The traffic is redistributed across the remaining member links

The traffic is dropped until the link is restored

The switch reboots to recover the link

An administrator is verifying a LAG configuration on a Juniper switch. The 'show lacp interfaces' command shows that one member link is in the 'Detached' state. What does this indicate?

The link is administratively down

The link is not receiving LACP packets from the peer

The link is receiving LACP packets and is part of the LAG

Juniper NetworksCertified Associate, Data Center

Domain 5Objective 1

Link Aggregation Groups (LAG) JN0-281 Practice Questions (Page 4)

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

7concepts

Questions 16–20

16foundation · easy
How does a switch distribute traffic across the member links of a LAG?
Select an answer first
17expert · hard
A LAG between two switches is experiencing intermittent packet loss. The 'show lacp interfaces' command shows that one member link is flapping between 'Current' and 'Detached' states. What is the most likely cause?
Select an answer first
18expert · medium
An administrator is configuring a LAG between a Juniper switch and a third-party switch. The third-party switch only supports LACP in passive mode. What must the administrator configure on the Juniper switch to ensure the LAG forms?
Select an answer first
19application · easy
A data center has a LAG with three member links between two switches. One of the member links fails due to a faulty transceiver. What happens to the traffic that was using the failed link?
Select an answer first
20application · medium
An administrator is verifying a LAG configuration on a Juniper switch. The 'show lacp interfaces' command shows that one member link is in the 'Detached' state. What does this indicate?
Select an answer first

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