ACE-A1.2: Arista Certified Engineering Associate

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

Tap ports are send only.
Tap ports are receive only.
Tool ports are send only.
Tool ports are receive only.

Correct answer: AD

Explanation:

Reference: https://eos.arista.com/danz-tap-aggregation-configuration-getting-started/#Ports_and_Groups

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

At the location specified in the running-config
At the location specified in the startup-config
At the location specified in a file named boot-config on flash:
At the location specified in a file named boot_config on flash:

Correct answer: C

Explanation:

Reference: https://www.safaribooksonline.com/library/view/arista-warrior/9781449358921/ch18.html

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

A missing or zero-byte SWI image.
A missing or zero-clue administrator.
A missing or zero-byte startup-config file
A missing or zero-byte running-config file

Correct answer: C

Explanation:

Reference: https://eos.arista.com/ztp-set-up-guide/#ZTP_Boot

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

idle-timeout <minutes>
timed <minutes>
timeout <minutes>
ssh-idle <minutes>

Correct answer: A

Explanation:

Reference: https://www.arista.com/en/um-eos-4172f/eos-section-2-5-session-management-commands#ww1129658

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

2
4
8
16

Correct answer: A

Explanation:

Reference: https://eos.arista.com/vxlan-routing-with-mlag/

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

STP is disabled
PVST
RPVST
MST

Correct answer: D

Explanation:

Reference: https://www.arista.com/ko/um-eos-4172f/eos-section-21-3-configuring-a-spanning-tree

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

You may login directly as root, but only when using SSH.
You may login as root, but only if you login as admin first.
You can run root-level commands without a password after logging in as root.
You cannot issue root-level commands until you add a user with a password.

Correct answer: D

What Arista feature helps with the diagnosis of microbursting events?

LANZ
DANZ
PANZ
FANZ

Correct answer: A

Explanation:

Reference: https://www.safaribooksonline.com/library/view/arista-warrior/9781449358921/ch01.html

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

Only the management interface.
Only the console.
All interfaces.
All connected interfaces.

Correct answer: D

What does LANZ do?

LANZ reports on microbursting events at extremely small intervals of time.
LANZ alters the flow of frames based on an interfaces high and low queue-thresholds.
LANZ is a form of QoS that allows for microsecond-levels of precision on interfaces that support it.
LANZ is the means whereby late packets can be analyzed.

Correct answer: A

Explanation:

Data center switches sometimes suffer from a problem known as microbursting, wherein the buffers become overrun and drop packets. The problem is that these microbursts happen often at microsecond intervals, so the switches never report them. These prob lems can be horrific to diagnose, and even worse to try and explain to executives. That is, unless you have an Arista switch with latency analyzer (LANZ)