Deck 1: Arista Certified Engineering Associate

Question 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 1

D

Question 2

In EOS, what is the default MLAG heartbeat interval?

A) 3600 seconds
B) 2 seconds
C) 5 minutes
D) 300 seconds

Answer 2

B

Question 3

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

A) idle-timeout
B) timed
C) timeout
D) ssh-idle

Answer 3

A

Question 4

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.

Question 5

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:

Question 6

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.

Question 7

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

A) STP is disabled
B) PVST
C) RPVST
D) MST

Question 8

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

Question 9

Which of the following are valid Event Manager triggers?

A) on-boot
B) on-schedule
C) on-startup-config
D) on-reload

Question 10

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

Question 11

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.

Question 12

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.

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?

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.

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?

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!

Question 15

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

Question 16

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

A) 7050
B) 7280E
C) 7300
D) 7500E

Question 17

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

A) 2
B) 4
C) 8
D) 16

Question 18

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.

Question 19

What Arista feature helps with the diagnosis of microbursting events?

A) LANZ
B) DANZ
C) PANZ
D) FANZ

Question 20

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

Question 21

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

Question 22

Which of the following Arista switches support LANZ?

A) 7010
B) 7150
C) 7500E
D) 7048T

Question 23

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).

Question 24

How is LANZ enabled on switches that support it?

A) With the management lanz command, followed by the no shutdown command. With the management lanz command, followed by the no shutdown command.
B) With the queue-monitor enable command. queue-monitor enable
C) With the lanz enable command. lanz enable
D) With the queue-monitor length command. queue-monitor length

Question 25

Which command will successfully configure Ethernet5 to be 40Gbps on an Arista 7150-52 switch?

A) An Arista 7150-52 dos not support 40Gbps
B) Since Ethernet 5 is a 10Gbps port, 40Gbps is not possible.
C) Arista(config-if-Et5)# speed forced 40gfull Arista(config-if-Et5)# speed forced 40gfull
D) Arista(config-if-Et5)# speed 40gfull speed 40gfull

Question 26

Which command will disable Adaptive Segmentation in VMTracer?

A) Student-01(config-vmtracer-session)# autovlan disable Student-01(config-vmtracer-session)# autovlan disable
B) Student-01(config-vmtracer-session)# no autovlan no autovlan
C) Student-01(config-vmtracer-session)# no autovlan enable no autovlan enable
D) Adaptive Segmentation cannot be disabled in VMTracer

Question 27

What does the asterisk in the following output signify?

A) The VLAN was created by VTP.
B) The VLAN was created by default.
C) The VLAN was created dynamically.
D) The VLAN is scheduled for removal by VMTracer.

Question 28

Which of the following is not a DANZ feature?

A) Tap Aggregation
B) Agile Ports
C) Advanced Mirroring
D) MLAG

Question 29

When using Monitor Sessions with a destination of the CPU, it is impossible to forward an entire 10Gbps worth of traffic due to internal COPP policies. How might you successfully use this feature given these constraints?

A) You just have to live with it.
B) Use packet truncation.
C) Use ACL filters applied to the mirror session.
D) Buy a switch with a larger TCAM.

Question 30

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

Question 31

What is the name of the link that connects two Arista switches together to form an MLAG domain?

A) The connector link
B) The east-west bypass link
C) The MLAG ISL (Inter-switch link)
D) The MLAG peer-link

Question 32

When using LANZ, which command would show you the number of segments configured on an Ethernet interface?

A) show lanz status
B) show lanz summary
C) show queue-monitor length status
D) show queue-monitor length summary

Question 33

Where does SysDB store its contents when the switch reboots?

A) flash:
B) /mnt/flash
C) /home/admin
D) none of the above

Question 34

Given the following output, on what interface would you expect to see mirrored traffic when using tcpdump?

A) Ethernet1
B) Et1
C) cpu0
D) mirror0

Question 35

Many Arista switches support reversible air flow. When the fans installed on such a switch have red handles, which of the following statements would be correct?

A) Cold air will be pulled in from the port side of the switch.
B) Warm air will be pulled in from the starboard side of the switch.
C) Hot air will be pulled in from the fan side of the switch.
D) Hot air will be ejected from the fan side of the switch.

Question 36

Which of the following statements is false?

A) You can run bash commands from CLI with the bash command.
B) You can run CLI commands from bash with the Cli command.
C) You can run CLI commands from bash with the FastCli command.
D) You can run CLI commands from CLI with the Cli command.

Question 37

Complete this sentence: In an Arista MLAG configuration, interfaces on both devices participate in a ___.

A) group conversation about the fastest Layer 3 routing protocol convergence scenarios
B) negotiation over BGP router ID priorities
C) distributed port channel, enabling all active paths to carry data traffic while maintaining the integrity of the STP topology
D) disabled Layer 1 fiber optic speed negotiation

Question 38

What is the first command necessary when configuring SSH after entering global configuration mode?

A) management
B) line vty
C) line ssh
D) management ssh

Question 39

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

Question 40

Given the following output, what can you determine about Ethernet13?

A) Ethernet13 has a QSFP interface
B) Ethernet13 has a QSFP+interface
C) Ethernet13 is an Agile Port
D) Ethernet13 has a hardware error that is causing it to misreport its connection speed.

Question 41

On an Arista 7150-24, which of the following commands would successfully help you to determine which ports would be subsumed within Ethernet1 configured at 40Gbps?

A) Arista# show platform fm6000 agile-port map Arista# show platform fm6000 agile-port map
B) Arista(config-if-Et1)# show platform fm6000 agile-port map Arista(config-if-Et1)#
C) Arista(config-mgmt-agile)# show platform fm6000 agile-port map Arista(config-mgmt-agile)#
D) Arista(config-if-Et1)# show platform petra agile-port map show platform petra agile-port map

Question 42

What is the EOS feature that allows switches with Multi-Switch CLI enabled to send non-interactive commands to multiple switches at once?

A) groups
B) switch-groups
C) chat-rooms
D) chat-groups

Question 43

What is the name of the Arista EOS feature that allows you to set triggers and perform actions on those triggers?

A) Event Manager
B) Event Monitor
C) Event Trigger
D) Event History

Question 44

What is the name of the feature that allows the destination of a monitor session to be the CPU?

A) Mirroring
B) Advanced Mirroring
C) CPU Mirroring
D) Super-Mirror

Question 45

Which Arista switch series supports more than eight line cards?

A) 7050
B) 7250QX
C) 7500
D) 7300

Question 46

Which of the following commands will show all of the hardware on an Arista switch?

A) show inventory
B) show version
C) show version detail
D) show hardware

Question 47

What is the fundamental purpose of SysDB?

A) SysDB is the repository for state information for EOS agents.
B) SysDB is the database in which username/password keys are stored.
C) SysDB is the database of systems discovered by the switch
D) SysDB is a marketing named for a feature that doesn't actually exist.

Question 48

What command configuration mode enabled you to connect to an Arista Switch via HTTPS for services such as Tap Aggregation?

A) management web secure
B) management web https enable
C) management web commands
D) management api http-commands

Question 49

What will the following command do? show event-monitor arp | grep 10.100.100.6

A) Show all the historical ARP entry changes on the remote Arista switch located at IP address 10.100.100.6
B) Show all the event-monitors for a switch that has an ARP address matched to the IP address 10.100.100.6
C) Show all historical ARP entry changes that contain the IP address 10.100.100.6
D) This is not a valid command

Question 50

Which of the following interface types are never found on an Arista switch?

A) management
B) console
C) Ethernet
D) auxiliary

Question 51

If an agent were to suffer a catastrophic failure and die, what process would restart it?

A) SysDB
B) ProcMgr
C) Stp
D) SysMgr

Question 52

When configuring MLAG, Arista recommends that the trunk group command be used on the VLAN used for MLAG peer communication. What is the purpose of the trunk group command?

A) It groups all the trunks together so that they can traverse the peer-link properly.
B) It groups the MLAG interfaces together so that they can be reported on both peers.
C) It prevents the configured VLAN from leaking out onto other trunks.
D) It ensures that the configured VLAN will be included on all trunks.

Question 53

Which of the following Tap Aggregation command sessions are correct?

A)
B)
C)
D)

Question 54

Does Arista EOS firmware support U.S. Federal Information Processing Standards (FIPS) and Common Criteria (CC) security requirements?

A) Yes
B) No

Question 55

Arista switches automatically issue a show tech support once every hour, saving the results to files on flash. How many of these files are retained by default?

A) 10
B) 50
C) 100
D) 150

Question 56

How many Virtual Network Identifiers are supported by the VXLAN specification?

A) 4096
B) 4094
C) 16,777,216
D) 16,000,000

Question 57

What is Adaptive Segmentation?

A) The ability for VMTracer to dynamically create VLANs based on the VLANs in use on VMs.
B) The ability to support multiple vCenter instances.
C) The ability for an Arista switch to run VMs on the switch itself.
D) The ability to split the switch into multiple virtual switches.

Question 58

If you were build a large-scale cloud-based architecture that required 100% efficient cell-based fabric, Virtual Output Queuing (VOQ), and 3.84 Tbps capacity per slot, which Arista switch series would be the correct choice?

A) 7010T
B) 7500E
C) 7300
D) 7150

Question 59

Given the following output, which of the following have you likely configured?

A) Advanced Mirroring with Packet Truncation
B) Advanced Mirroring with ACLs
C) Agile Ports
D) Buffer Tuning

Question 60

With VXLAN, a table is created that contains all the known VXLAN Tunnel Endpoints within a VXLAN VNI. What is this table called?

A) The mac-address-table
B) The flood-list
C) The ARP table
D) There is no such table

Question 61

How does Arista's VMTracer feature support multi-tenancy?

A) By allowing VMs to be run on the switch itself.
B) By allowing connections to multiple ESXi hosts.
C) By allowing connections to multiple vCenters.
D) VMTracer does not support multi-tenancy.

Question 62

Which of the following are valid interface named in EOS? (Select three)

A) Ethernet 1
B) FastEthernet 38
C) vxlan 1
D) Vlan 101

Question 63

When you fullrecover a switch from Aboot and a USB drive is present in the USB port of the switch, which of the following statements is true?

A) Everything on the USB drive is deleted.
B) Only Arista-sourced files are copied from the USB drive to flash: and the switch reboots.
C) If the USB drive contains a fullrecover file and a boot-config file with a timestamp different than the one on USB flash drive, then the USB Drive's contents will be copied to flash, after which the switch will reboot.
D) Nothing. The USB port is disabled when Aboot is active.

Question 64

Which of the following statements are true?

A) VMTracer's Adaptive Segmentation feature will automatically add or prune VLANs learned from vCenter from every trunk between two known ESXi hosts so long as they are connected using Arista switches.
B) VMTracer's Adaptive Segmentation feature will automatically add or prune VLANs learned from vCenter from the trunks connecting to the local switch on which the local ESXi host is connected.
C) VMTracer's Adaptive Segmentation feature will automatically add or prune VLANs learned from vCenter everywhere in the network.
D) VMTracer's Adaptive Segmentation feature will automatically add or remove VLANs on the switch, but it does not add or prune VLANs from trunks.

Question 65

How many line card slots are reserved for supervisors on the Arista 7300 series chassis switches?

A) 1
B) 2
C) 4
D) none

Question 66

What is the abbreviation for the term used to describe a device capable of encapsulating and decapsulating VXLAN packets?

A) VTEP
B) VNI
C) VXLAN
D) VTP

Question 67

Which of the following programming environments is included in every version of EOS out of the box?

A) Perl
B) Python
C) PHP
D) Ruby

Question 68

Why is FastCli faster than Cli?

A) FastCli utilizes an always-running agent to process the submitted command and return the output.
B) FastCli is not faster than Cli, though the name might suggest otherwise.
C) FastCli is written in C++ while Cli is written in Perl.
D) FastCli uses special engrams from the M5.

Question 69

The Arista MLAG domain ID is:

A) a text string configured in each peer switch
B) a serial number tied to the chassis of the master switch
C) the secret password into the local speakeasy
D) a pseudorandom number generated by the on board atomic clock

Question 70

Which of the following commands will create a static flood-list entry while in VXLAN interface configuration mode?

A) vxlan flood vlan 103 vtep 10.1.14.1
B) vxlan vlan 103 vtep flood 10.1.14.1
C) vxlan vlan 103 flood vtep 10.1.14.1
D) There is no such command.

Question 71

To upgrade the EOS running on an Arista switch, which of the following commands copies the new EOS file from USB to flash?

A) copy usb1:/EOS-4.15.0.swi flash:/EOS-4.15.0.swi
B) copy usb:/EOS-4.15.0.swi flash:/EOS-4.15.0.swi
C) copy drive0:/EOS-4.15.0.swi flash:/EOS-4.15.0.swi
D) copy usb0:/EOS-4.15.0.swi flash:/EOS-4.15.0.swi

Question 72

What service does the MLAG feature provide?

A) Layer 3 OSPF redundancy
B) Telco redundancy
C) Layer 2 redundancy and increased Layer 2 bandwidth
D) Access List group therapy

Question 73

What is the name of the feature that allows you to retrieve the output of CLI commands in JSON format?

A) XMPP
B) DANZ
C) LANZ
D) eAPI

Question 74

Which of the following commands is being deprecated and will not be supported in the near future?

A) copy running-config startup-config
B) copy run start
C) write memory
D) none of the above

Question 75

What does %1 signify when writing an alias statement in CLI?

A) It means that Arista is number one.
B) %1 is a placeholder that will be replaced with token 1 when the alias is called.
C) It doesn't mean anything.
D) %1 means that the CPU is limited to 1% when the alias is called.

Question 76

When ZTP has been placed in cancel mode, you must issue the write memory command to prevent ZTP from triggering again.

Question 77

What is the command to set the switch to use EOS 4.15.1F.swi the next time it reloads?

A) boot system flash:EOS-4.15.1.swi
B) boot system 4.15.1F.swi
C) boot system flash:/EOS-4.15.1F.swi
D) boot system flash EOS-4.15.1F.swi

Question 78

In what file might "DISABLE=True" be found on a switch with no other configuration?

A) mlag-config
B) zerotouch-config
C) api-config
D) eapi-config

Question 79

What is the MLAG peer address?

A) The MLAG peer address is the management IP of the MLAG domain virtual switch
B) The MLAG peer address is the ip address of the other switch in the MLAG domain
C) The MLAG peer address is the address used as a virtual default gateway
D) The MLAG peer address is the multicast addressed used by OSPF in an MLAG environment.

Question 80

The VXLAN spec allows for two implementation types. One uses multicast. What is the other one called?

A) Non-multicast replication
B) BUM-Replication
C) Fore-end Replication
D) Head-end Replication