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Exam Arista Certified Engineering Associate
Number ACE-A1.2
File Name Arista.ACE-A1.2.PracticeTest.2017-04-19.60q.vcex
Size 164 KB
Posted Apr 19, 2017
Download Arista.ACE-A1.2.PracticeTest.2017-04-19.60q.vcex

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Demo Questions

Question 1

What does LANZ do?


  1. LANZ reports on microbursting events at extremely small intervals of time.
  2. LANZ alters the flow of frames based on an interfaces high and low queue-thresholds.
  3. LANZ is a form of QoS that allows for microsecond-levels of precision on interfaces that support it.
  4. 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)
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 2

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


  1. BGP
  2. IEEE 1588
  3. STP
  4. None of the above
Correct answer: C
Explanation:
Reference: https://eos.arista.com/mlag-basic-configuration/
Reference: https://eos.arista.com/mlag-basic-configuration/



Question 3

In EOS, what is the default MLAG heartbeat interval?


  1. 3600 seconds
  2. 2 seconds
  3. 5 minutes
  4. 300 seconds
Correct answer: B
Explanation:
Reference: https://eos.arista.com/mlag-basic-configuration/
Reference: https://eos.arista.com/mlag-basic-configuration/



Question 4

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?


  1. If the first line of the file ends with a shebang (#!), the file is a configuration file.
  2. If the first line of the file starts with a shebang (#!), the file is a script.
  3. If the last line of the file ends with a shebang (#!), the file is a script.
  4. If the last line of the file starts with a shebang (#!), the file is a configuration file.
Correct answer: D



Question 5

In EOS, which of the following statements is the shortest acceptable abbreviation for entering global configuration mode?


  1. conf
  2. con
  3. config
  4. conf t
Correct answer: B



Question 6

Which of the following EOS features might alleviate the need for screen-scraping in your scripts?


  1. The linux screen command
  2. LANZ
  3. eAPI
  4. Python
Correct answer: C



Question 7

Which of the following best describes Arista’s MLAG feature?


  1. utilizes bandwidth more efficiently with fewer uplinks blocked by Spanning Tree
  2. combines up to seven switches in a ring topology
  3. negotiates speed and duplex settings on 10Gb interfaces
  4. saves all dropped packets to be used at a later time
Correct answer: A
Explanation:
Reference: https://www.arista.com/assets/data/pdf/Whitepapers/Arista_Design_Guide_DCI_with_VXLAN.pdf (page 9)
Reference: https://www.arista.com/assets/data/pdf/Whitepapers/Arista_Design_Guide_DCI_with_VXLAN.pdf (page 9)



Question 8

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?


  1. All interfaces are shut down.
  2. All interfaces are disabled.
  3. All interfaces are routed ports (no switchport).
  4. All interfaces are switch ports (switchport).
Correct answer: A



Question 9

Which of the following Arista switches support LANZ?


  1. 7010
  2. 7150
  3. 7500E
  4. 7048T
Correct answer: D
Explanation:
Reference: https://eos.arista.com/latency-analyzer-lanz-architectures-and-configuration/#5_LANZ_lite_7500_and_7048T
Reference: https://eos.arista.com/latency-analyzer-lanz-architectures-and-configuration/#5_LANZ_lite_7500_and_7048T



Question 10

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?


  1. Cold air will be pulled in from the port side of the switch.
  2. Warm air will be pulled in from the starboard side of the switch.
  3. Hot air will be pulled in from the fan side of the switch.
  4. Hot air will be ejected from the fan side of the switch.
Correct answer: D
Explanation:
Reference: https://www.arista.com/assets/data/docs/Manuals/QSG/QS_7000-Gen3_Color.pdf (page 5)
Reference: https://www.arista.com/assets/data/docs/Manuals/QSG/QS_7000-Gen3_Color.pdf (page 5)



Question 11

What does LANZ do?


  1. LANZ reports on microbursting events at extremely small intervals of time.
  2. LANZ alters the flow of frames based on an interfaces high and low queue-thresholds.
  3. LANZ is a form of QoS that allows for microsecond-levels of precision on interfaces that support it.
  4. 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)
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 12

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


  1. BGP
  2. IEEE 1588
  3. STP
  4. None of the above
Correct answer: C
Explanation:
Reference: https://eos.arista.com/mlag-basic-configuration/
Reference: https://eos.arista.com/mlag-basic-configuration/



Question 13

In EOS, what is the default MLAG heartbeat interval?


  1. 3600 seconds
  2. 2 seconds
  3. 5 minutes
  4. 300 seconds
Correct answer: B
Explanation:
Reference: https://eos.arista.com/mlag-basic-configuration/
Reference: https://eos.arista.com/mlag-basic-configuration/



Question 14

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?


  1. If the first line of the file ends with a shebang (#!), the file is a configuration file.
  2. If the first line of the file starts with a shebang (#!), the file is a script.
  3. If the last line of the file ends with a shebang (#!), the file is a script.
  4. If the last line of the file starts with a shebang (#!), the file is a configuration file.
Correct answer: D



Question 15

In EOS, which of the following statements is the shortest acceptable abbreviation for entering global configuration mode?


  1. conf
  2. con
  3. config
  4. conf t
Correct answer: B



Question 16

Which of the following EOS features might alleviate the need for screen-scraping in your scripts?


  1. The linux screen command
  2. LANZ
  3. eAPI
  4. Python
Correct answer: C



Question 17

Which of the following best describes Arista’s MLAG feature?


  1. utilizes bandwidth more efficiently with fewer uplinks blocked by Spanning Tree
  2. combines up to seven switches in a ring topology
  3. negotiates speed and duplex settings on 10Gb interfaces
  4. saves all dropped packets to be used at a later time
Correct answer: A
Explanation:
Reference: https://www.arista.com/assets/data/pdf/Whitepapers/Arista_Design_Guide_DCI_with_VXLAN.pdf (page 9)
Reference: https://www.arista.com/assets/data/pdf/Whitepapers/Arista_Design_Guide_DCI_with_VXLAN.pdf (page 9)



Question 18

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?


  1. All interfaces are shut down.
  2. All interfaces are disabled.
  3. All interfaces are routed ports (no switchport).
  4. All interfaces are switch ports (switchport).
Correct answer: A



Question 19

Which of the following Arista switches support LANZ?


  1. 7010
  2. 7150
  3. 7500E
  4. 7048T
Correct answer: D
Explanation:
Reference: https://eos.arista.com/latency-analyzer-lanz-architectures-and-configuration/#5_LANZ_lite_7500_and_7048T
Reference: https://eos.arista.com/latency-analyzer-lanz-architectures-and-configuration/#5_LANZ_lite_7500_and_7048T



Question 20

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?


  1. Cold air will be pulled in from the port side of the switch.
  2. Warm air will be pulled in from the starboard side of the switch.
  3. Hot air will be pulled in from the fan side of the switch.
  4. Hot air will be ejected from the fan side of the switch.
Correct answer: D
Explanation:
Reference: https://www.arista.com/assets/data/docs/Manuals/QSG/QS_7000-Gen3_Color.pdf (page 5)
Reference: https://www.arista.com/assets/data/docs/Manuals/QSG/QS_7000-Gen3_Color.pdf (page 5)



Question 21

What does LANZ do?


  1. LANZ reports on microbursting events at extremely small intervals of time.
  2. LANZ alters the flow of frames based on an interfaces high and low queue-thresholds.
  3. LANZ is a form of QoS that allows for microsecond-levels of precision on interfaces that support it.
  4. 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)
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 22

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


  1. BGP
  2. IEEE 1588
  3. STP
  4. None of the above
Correct answer: C
Explanation:
Reference: https://eos.arista.com/mlag-basic-configuration/
Reference: https://eos.arista.com/mlag-basic-configuration/



Question 23

In EOS, what is the default MLAG heartbeat interval?


  1. 3600 seconds
  2. 2 seconds
  3. 5 minutes
  4. 300 seconds
Correct answer: B
Explanation:
Reference: https://eos.arista.com/mlag-basic-configuration/
Reference: https://eos.arista.com/mlag-basic-configuration/



Question 24

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?


  1. If the first line of the file ends with a shebang (#!), the file is a configuration file.
  2. If the first line of the file starts with a shebang (#!), the file is a script.
  3. If the last line of the file ends with a shebang (#!), the file is a script.
  4. If the last line of the file starts with a shebang (#!), the file is a configuration file.
Correct answer: D



Question 25

In EOS, which of the following statements is the shortest acceptable abbreviation for entering global configuration mode?


  1. conf
  2. con
  3. config
  4. conf t
Correct answer: B



Question 26

Which of the following EOS features might alleviate the need for screen-scraping in your scripts?


  1. The linux screen command
  2. LANZ
  3. eAPI
  4. Python
Correct answer: C



Question 27

Which of the following best describes Arista’s MLAG feature?


  1. utilizes bandwidth more efficiently with fewer uplinks blocked by Spanning Tree
  2. combines up to seven switches in a ring topology
  3. negotiates speed and duplex settings on 10Gb interfaces
  4. saves all dropped packets to be used at a later time
Correct answer: A
Explanation:
Reference: https://www.arista.com/assets/data/pdf/Whitepapers/Arista_Design_Guide_DCI_with_VXLAN.pdf (page 9)
Reference: https://www.arista.com/assets/data/pdf/Whitepapers/Arista_Design_Guide_DCI_with_VXLAN.pdf (page 9)



Question 28

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?


  1. All interfaces are shut down.
  2. All interfaces are disabled.
  3. All interfaces are routed ports (no switchport).
  4. All interfaces are switch ports (switchport).
Correct answer: A



Question 29

Which of the following Arista switches support LANZ?


  1. 7010
  2. 7150
  3. 7500E
  4. 7048T
Correct answer: D
Explanation:
Reference: https://eos.arista.com/latency-analyzer-lanz-architectures-and-configuration/#5_LANZ_lite_7500_and_7048T
Reference: https://eos.arista.com/latency-analyzer-lanz-architectures-and-configuration/#5_LANZ_lite_7500_and_7048T



Question 30

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?


  1. Cold air will be pulled in from the port side of the switch.
  2. Warm air will be pulled in from the starboard side of the switch.
  3. Hot air will be pulled in from the fan side of the switch.
  4. Hot air will be ejected from the fan side of the switch.
Correct answer: D
Explanation:
Reference: https://www.arista.com/assets/data/docs/Manuals/QSG/QS_7000-Gen3_Color.pdf (page 5)
Reference: https://www.arista.com/assets/data/docs/Manuals/QSG/QS_7000-Gen3_Color.pdf (page 5)









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