Question 1

Arista MLAG uses which of the following protocols for inter-switch communication?

Accepted Answer

Arista MLAG does not use any of the mentioned protocols for inter-switch communication. MLAG uses a proprietary protocol called Multi-Chassis Link Aggregation Control Protocol (MLAGCP) for inter-switch communication.

Question 2

In EOS, what is the default MLAG heartbeat interval?

Accepted Answer

The default MLAG heartbeat interval in EOS is 2 seconds.

Question 3

Which command would you use to change the SSH Idle timeout after entering the 'management ssh' command?

Accepted Answer

The correct command to change the SSH Idle timeout after entering the 'management ssh' command is 'idle-timeout <minutes>'. Therefore, option A is the best choice. Options B, C, and D are invalid commands.

Question 4

On EOS 4.13.1F, which of the following statements are true in regards to Arista's Tap Aggregation feature? (Select two)

Accepted Answer

- Tap ports are used for monitoring network traffic and are send only ports which means they can only transmit data to a monitoring device or tool.
- Tool ports are used to connect the monitoring device or tool and are receive only ports which means they can only receive data.

Question 5

Where does Aboot look for the boot system image at boot time?

Accepted Answer

Aboot looks for the boot system image at the location specified in a file named boot-config on flash.

Question 6

On what interface(s) will ZTP send out requests?

Accepted Answer

The answer of On what interface(s) will ZTP send out...

Question 7

What is the default spanning-tree mode on an Arista switch?

Accepted Answer

Arista switches use Multiple Spanning Tree Protocol (MST) as the default spanning-tree mode.

Question 8

On an Arista switch, which port is used to connect a laptop to the switch for initial configuration or password recovery?

Accepted Answer

The answer of On an Arista switch, which port is...

Question 9

Which of the following are valid Event Manager triggers?

Accepted Answer

The answer of Which of the following are valid Event...

Question 10

Which of the following are not valid boot-config file entries?

Accepted Answer

The answer of Which of the following are not valid...

Question 11

What is required in order for Multi-Switch CLI to be implemented?

Accepted Answer

Multi-Switch CLI requires an XMPP-based server such as EJabberd to be implemented. The other options listed are not necessary for this feature.

Question 12

What does LANZ do?

Accepted Answer

LANZ reports on microbursting events at extremely small intervals of time, providing detailed insights into network congestion and performance issues.

Question 13

ZTP can retrieve either an EOS configuration file or a script at boot. How does the switch determine of the file being retrieved in a script or a configuration file?

Accepted Answer

If the first line of the file starts with a shebang (#!), the file is a script. If it does not start with a shebang, it is assumed to be a configuration file.

Question 14

What would be the result of issuing a reload command on one of the two switches peered together in an MLAG domain where both switches are running EOS version 4.14.1F?

Accepted Answer

When one switch in an MLAG domain is reloaded, dual-homed hosts lose 50% of network capacity as only one switch remains active until the reloaded switch comes back online.

Question 15

When ZTP is in enable node, what triggers ZTP when the switch boots?

Accepted Answer

ZTP (Zero Touch Provisioning) is triggered when there is a missing or zero-byte startup-config file, as it indicates that the switch needs to be configured from scratch.

Question 16

Which of the following Arista switch series' supports Zero Touch Provisioning (ZTP)?

Accepted Answer

The answer of Which of the following Arista switch series'...

Question 17

How many Arista switches may be a part of a single MLAG domain?

Accepted Answer

A single MLAG domain can only have two Arista switches.

Question 18

Which of the following statements is true with an Arista switch that has no configuration, but has booted with ZTP disabled?

Accepted Answer

Without ZTP, the switch will have no configuration and no users created, including the root user. Therefore, you cannot issue root-level commands until you add a user with a password.

Question 19

What Arista feature helps with the diagnosis of microbursting events?

Accepted Answer

LANZ (Latency Analyzer) is a unique Arista feature that provides real-time visibility into network performance, including microbursting events. It allows network administrators to track network congestion, identify application flows causing congestion, and optimize network performance. DANZ (Data ANalyZer) is another Arista feature for network visibility but is not specifically designed for diagnosing microbursting events. PANZ and FANZ are not Arista features.

Question 20

After configuration and enabling XMPP, what command can be used to verify its status?

Accepted Answer

The correct command to verify the status of XMPP after configuration and enabling is "show xmpp status." This command will display the current status of XMPP, whether it's enabled or disabled, as well as any configured XMPP servers. The other answer choices present various options, but none of them provide the specific information needed to verify the status of XMPP.

Exam 1: Arista Certified Engineering Associate