Arista Certified Engineering Associate Questions + Answers
Posted: Sun Apr 03, 2022 4:45 pm
Question 1 ( Topic 1 )
On EOS 4.13.1F, which of the following statements are true in regards to Arista"™s Tap Aggregation feature? (Select two)
A. Tap ports are send only.
B. Tap ports are receive only.
C. Tool ports are send only.
D. Tool ports are receive only.
Answer : AD
Reference:
https://eos.arista.com/danz-tap-aggrega ... and_Groups
Question 2 ( Topic 1 )
Where does Aboot look for the boot system image at boot time?
A. At the location specified in the running-config
B. At the location specified in the startup-config
C. At the location specified in a file named boot-config on flash:
D. At the location specified in a file named boot_config on flash:
Answer : C
Reference:
https://www.safaribooksonline.com/libra ... /ch18.html
Question 3 ( Topic 1 )
When ZTP is in enable node, what triggers ZTP when the switch boots?
A. A missing or zero-byte SWI image.
B. A missing or zero-clue administrator.
C. A missing or zero-byte startup-config file
D. A missing or zero-byte running-config file
Answer : C
Reference:
https://eos.arista.com/ztp-set-up-guide/#ZTP_Boot
Question 4 ( Topic 1 )
Which of the following are valid Event Manager triggers?
A. on-boot
B. on-schedule
C. on-startup-config
D. on-reload
Answer : AC
Reference:
https://eos.arista.com/introduction-to- ... nt_Manager
Question 5 ( Topic 1 )
Which of the following Arista switch series"™ supports Zero Touch Provisioning (ZTP)?
A. 7050
B. 7280E
C. 7300
D. 7500E
Answer : D
Reference:
https://eos.arista.com/ztp-set-up-guide/
(see introduction)
Question 6 ( Topic 1 )
Which command would you use to change the SSH Idle timeout after entering the "˜management ssh"™ command?
A. idle-timeout <minutes>
B. timed <minutes>
C. timeout <minutes>
D. ssh-idle <minutes>
Answer : A
Reference:
https://www.arista.com/en/um-eos-4172f/ ... #ww1129658
Question 7 ( Topic 1 )
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?
A. Dual-homed hosts lose 50% of network capacity through the MLAG domain while the switch reboots
B. The peer switch also reboots to ensure network stability.
C. The peer switch sends out gratuitous BPDUs to let the network know that it has assumed the root-bridge role.
D. Nothing bad ever happens when MLAG is enabled!
Answer : A
Question 8 ( Topic 1 )
On an Arista switch, which port is used to connect a laptop to the switch for initial configuration or password recovery?
A. Ethernet 1
B. Console
C. Management 1
D. Ethernet 1/1
Answer : A
Question 9 ( Topic 1 )
How many Arista switches may be a part of a single MLAG domain?
A. 2
B. 4
C. 8
D. 16
Answer : A
Reference:
https://eos.arista.com/vxlan-routing-with-mlag/
Question 10 ( Topic 1 )
Which of the following are not valid boot-config file entries?
A. NETGW=192.168.1.1
B. IMAGE-flash:EOS-4.12.1.swi
C. SWI=flash:EOS-4.12.1.swi
D. SWIX=flash:EOS-4.12.1.swi
Answer : B
Reference:
https://books.google.com.pk/books?id=SF ... ots=Wzz7--
D5ms&sig=4jroImKwuPHiL1waXg6W2wlRo-g&hl=en&sa=X&redir_esc=y#v=onepage&q=Arista%20EOS%20boot-config%20file%20entries&f=false
Question 11 ( Topic 1 )
What is the default spanning-tree mode on an Arista switch?
A. STP is disabled
B. PVST
C. RPVST
D. MST
Answer : D
Reference:
https://www.arista.com/ko/um-eos-4172f/ ... nning-tree
Question 12 ( Topic 1 )
What is required in order for Multi-Switch CLI to be implemented?
A. One or more Arista products with management xmpp enabled.
B. an XMPP-based server such as EJabberd
C. an instant messaging client such as Admium or Trillian
D. an SSD drive to the extensive logging produced by this feature.
Answer : B
Question 13 ( Topic 1 )
Which of the following statements is true with an Arista switch that has no configuration, but has booted with ZTP disabled?
A. You may login directly as root, but only when using SSH.
B. You may login as root, but only if you login as admin first.
C. You can run root-level commands without a password after logging in as root.
D. You cannot issue root-level commands until you add a user with a password.
Answer : D
Question 14 ( Topic 1 )
What Arista feature helps with the diagnosis of microbursting events?
A. LANZ
B. DANZ
C. PANZ
D. FANZ
Answer : A
Reference:
https://www.safaribooksonline.com/libra ... /ch01.html
Question 15 ( Topic 1 )
On what interface(s) will ZTP send out requests?
A. Only the management interface.
B. Only the console.
C. All interfaces.
D. All connected interfaces.
Answer : D
Question 16 ( Topic 1 )
After configuration and enabling XMPP, what command can be used to verify its status?
A. show status xmpp
B. show xmpp status
C. show xmpp server
D. show xmpp server status
Answer : B
Question 17 ( Topic 1 )
What does LANZ do?
A. LANZ reports on microbursting events at extremely small intervals of time.
B. LANZ alters the flow of frames based on an interfaces high and low queue-thresholds.
C. LANZ is a form of QoS that allows for microsecond-levels of precision on interfaces that support it.
D. LANZ is the means whereby late packets can be analyzed.
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)
Question 18 ( Topic 1 )
Arista MLAG uses which of the following protocols for inter-switch communication?
A. BGP
B. IEEE 1588
C. STP
D. None of the above
Answer : D
Reference:
https://eos.arista.com/mlag-basic-configuration/
Question 19 ( Topic 1 )
In EOS, what is the default MLAG heartbeat interval?
A. 3600 seconds
B. 2 seconds
C. 5 minutes
D. 300 seconds
Answer : B
Reference:
https://eos.arista.com/mlag-basic-configuration/
Question 20 ( Topic 1 )
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?
A. If the first line of the file ends with a shebang (#!), the file is a configuration file.
B. If the first line of the file starts with a shebang (#!), the file is a script.
C. If the last line of the file ends with a shebang (#!), the file is a script.
D. If the last line of the file starts with a shebang (#!), the file is a configuration file.
Answer : B
Question 21 ( Topic 1 )
In EOS, which of the following statements is the shortest acceptable abbreviation for entering global configuration mode?
A. conf
B. con
C. config
D. conf t
Answer : A
Explanation:
Question 22 ( Topic 1 )
Which of the following EOS features might alleviate the need for screen-scraping in your scripts?
A. The linux screen command
B. LANZ
C. eAPI
D. Python
Answer : C
Question 23 ( Topic 1 )
Which of the following best describes Arista"™s MLAG feature?
A. utilizes bandwidth more efficiently with fewer uplinks blocked by Spanning Tree
B. combines up to seven switches in a ring topology
C. negotiates speed and duplex settings on 10Gb interfaces
D. saves all dropped packets to be used at a later time
Answer : A
Reference:
https://www.arista.com/assets/data/pdf/ ... _VXLAN.pdf
(page 9)
Question 24 ( Topic 1 )
When an Arista switch boots with no startup-config and ZTP enabled, before ZTP receives an IP address, in what state are the front-panel interfaces?
A. All interfaces are shut down.
B. All interfaces are disabled.
C. All interfaces are routed ports (no switchport).
D. All interfaces are switch ports (switchport).
Answer : C
Reference:
https://www.arista.com/en/um-eos/eos-se ... ection-11-
6-ethernet-configuration-commands#ww1144090
Question 25 ( Topic 1 )
Which of the following Arista switches support LANZ?
A. 7010
B. 7150
C. 7500E
D. 7048T
Answer : D
Reference:
https://eos.arista.com/latency-analyzer ... _and_7048T
On EOS 4.13.1F, which of the following statements are true in regards to Arista"™s Tap Aggregation feature? (Select two)
A. Tap ports are send only.
B. Tap ports are receive only.
C. Tool ports are send only.
D. Tool ports are receive only.
Answer : AD
Reference:
https://eos.arista.com/danz-tap-aggrega ... and_Groups
Question 2 ( Topic 1 )
Where does Aboot look for the boot system image at boot time?
A. At the location specified in the running-config
B. At the location specified in the startup-config
C. At the location specified in a file named boot-config on flash:
D. At the location specified in a file named boot_config on flash:
Answer : C
Reference:
https://www.safaribooksonline.com/libra ... /ch18.html
Question 3 ( Topic 1 )
When ZTP is in enable node, what triggers ZTP when the switch boots?
A. A missing or zero-byte SWI image.
B. A missing or zero-clue administrator.
C. A missing or zero-byte startup-config file
D. A missing or zero-byte running-config file
Answer : C
Reference:
https://eos.arista.com/ztp-set-up-guide/#ZTP_Boot
Question 4 ( Topic 1 )
Which of the following are valid Event Manager triggers?
A. on-boot
B. on-schedule
C. on-startup-config
D. on-reload
Answer : AC
Reference:
https://eos.arista.com/introduction-to- ... nt_Manager
Question 5 ( Topic 1 )
Which of the following Arista switch series"™ supports Zero Touch Provisioning (ZTP)?
A. 7050
B. 7280E
C. 7300
D. 7500E
Answer : D
Reference:
https://eos.arista.com/ztp-set-up-guide/
(see introduction)
Question 6 ( Topic 1 )
Which command would you use to change the SSH Idle timeout after entering the "˜management ssh"™ command?
A. idle-timeout <minutes>
B. timed <minutes>
C. timeout <minutes>
D. ssh-idle <minutes>
Answer : A
Reference:
https://www.arista.com/en/um-eos-4172f/ ... #ww1129658
Question 7 ( Topic 1 )
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?
A. Dual-homed hosts lose 50% of network capacity through the MLAG domain while the switch reboots
B. The peer switch also reboots to ensure network stability.
C. The peer switch sends out gratuitous BPDUs to let the network know that it has assumed the root-bridge role.
D. Nothing bad ever happens when MLAG is enabled!
Answer : A
Question 8 ( Topic 1 )
On an Arista switch, which port is used to connect a laptop to the switch for initial configuration or password recovery?
A. Ethernet 1
B. Console
C. Management 1
D. Ethernet 1/1
Answer : A
Question 9 ( Topic 1 )
How many Arista switches may be a part of a single MLAG domain?
A. 2
B. 4
C. 8
D. 16
Answer : A
Reference:
https://eos.arista.com/vxlan-routing-with-mlag/
Question 10 ( Topic 1 )
Which of the following are not valid boot-config file entries?
A. NETGW=192.168.1.1
B. IMAGE-flash:EOS-4.12.1.swi
C. SWI=flash:EOS-4.12.1.swi
D. SWIX=flash:EOS-4.12.1.swi
Answer : B
Reference:
https://books.google.com.pk/books?id=SF ... ots=Wzz7--
D5ms&sig=4jroImKwuPHiL1waXg6W2wlRo-g&hl=en&sa=X&redir_esc=y#v=onepage&q=Arista%20EOS%20boot-config%20file%20entries&f=false
Question 11 ( Topic 1 )
What is the default spanning-tree mode on an Arista switch?
A. STP is disabled
B. PVST
C. RPVST
D. MST
Answer : D
Reference:
https://www.arista.com/ko/um-eos-4172f/ ... nning-tree
Question 12 ( Topic 1 )
What is required in order for Multi-Switch CLI to be implemented?
A. One or more Arista products with management xmpp enabled.
B. an XMPP-based server such as EJabberd
C. an instant messaging client such as Admium or Trillian
D. an SSD drive to the extensive logging produced by this feature.
Answer : B
Question 13 ( Topic 1 )
Which of the following statements is true with an Arista switch that has no configuration, but has booted with ZTP disabled?
A. You may login directly as root, but only when using SSH.
B. You may login as root, but only if you login as admin first.
C. You can run root-level commands without a password after logging in as root.
D. You cannot issue root-level commands until you add a user with a password.
Answer : D
Question 14 ( Topic 1 )
What Arista feature helps with the diagnosis of microbursting events?
A. LANZ
B. DANZ
C. PANZ
D. FANZ
Answer : A
Reference:
https://www.safaribooksonline.com/libra ... /ch01.html
Question 15 ( Topic 1 )
On what interface(s) will ZTP send out requests?
A. Only the management interface.
B. Only the console.
C. All interfaces.
D. All connected interfaces.
Answer : D
Question 16 ( Topic 1 )
After configuration and enabling XMPP, what command can be used to verify its status?
A. show status xmpp
B. show xmpp status
C. show xmpp server
D. show xmpp server status
Answer : B
Question 17 ( Topic 1 )
What does LANZ do?
A. LANZ reports on microbursting events at extremely small intervals of time.
B. LANZ alters the flow of frames based on an interfaces high and low queue-thresholds.
C. LANZ is a form of QoS that allows for microsecond-levels of precision on interfaces that support it.
D. LANZ is the means whereby late packets can be analyzed.
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)
Question 18 ( Topic 1 )
Arista MLAG uses which of the following protocols for inter-switch communication?
A. BGP
B. IEEE 1588
C. STP
D. None of the above
Answer : D
Reference:
https://eos.arista.com/mlag-basic-configuration/
Question 19 ( Topic 1 )
In EOS, what is the default MLAG heartbeat interval?
A. 3600 seconds
B. 2 seconds
C. 5 minutes
D. 300 seconds
Answer : B
Reference:
https://eos.arista.com/mlag-basic-configuration/
Question 20 ( Topic 1 )
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?
A. If the first line of the file ends with a shebang (#!), the file is a configuration file.
B. If the first line of the file starts with a shebang (#!), the file is a script.
C. If the last line of the file ends with a shebang (#!), the file is a script.
D. If the last line of the file starts with a shebang (#!), the file is a configuration file.
Answer : B
Question 21 ( Topic 1 )
In EOS, which of the following statements is the shortest acceptable abbreviation for entering global configuration mode?
A. conf
B. con
C. config
D. conf t
Answer : A
Explanation:
Question 22 ( Topic 1 )
Which of the following EOS features might alleviate the need for screen-scraping in your scripts?
A. The linux screen command
B. LANZ
C. eAPI
D. Python
Answer : C
Question 23 ( Topic 1 )
Which of the following best describes Arista"™s MLAG feature?
A. utilizes bandwidth more efficiently with fewer uplinks blocked by Spanning Tree
B. combines up to seven switches in a ring topology
C. negotiates speed and duplex settings on 10Gb interfaces
D. saves all dropped packets to be used at a later time
Answer : A
Reference:
https://www.arista.com/assets/data/pdf/ ... _VXLAN.pdf
(page 9)
Question 24 ( Topic 1 )
When an Arista switch boots with no startup-config and ZTP enabled, before ZTP receives an IP address, in what state are the front-panel interfaces?
A. All interfaces are shut down.
B. All interfaces are disabled.
C. All interfaces are routed ports (no switchport).
D. All interfaces are switch ports (switchport).
Answer : C
Reference:
https://www.arista.com/en/um-eos/eos-se ... ection-11-
6-ethernet-configuration-commands#ww1144090
Question 25 ( Topic 1 )
Which of the following Arista switches support LANZ?
A. 7010
B. 7150
C. 7500E
D. 7048T
Answer : D
Reference:
https://eos.arista.com/latency-analyzer ... _and_7048T