400-007

400-007 practice questions, page 14 of 14, with answer review and explanations.

Question 66

Which two statements describe the hierarchical LAN design model? (Choose two.)

  1. It is a well-understood architecture that provides scalability.
  2. It is the best design for modem data centers.
  3. Changes, upgrades, and new services can be introduced in a controlled and staged manner.
  4. It is the most optimal design but is highly complex.
  5. It provides a simplified design.

Question 67

Refer to the exhibit. An engineer has been asked to redesign the traffic flow toward AS 111 coming from AS 500. Traffic destined to AS 111 network 91.7.0.0/16 should come in via AS 100, while traffic destined to all other networks in AS 111 should continue to use the existing path. Which BGP attributes are best suited to control this inbound traffic coming from BGP AS 500 into the 91.7.0.0/16 network?

  1. Use local preference on R1 for the networks that AS 500 advertises to AS 111
  2. Prepend AS path for the 91.7.0.0/16 network and set it for neighbor in AS 200
  3. Use extended community for the 91.7.0.0/16 network, not advertising it to the bi-lateral peer
  4. Set higher MED for neighbor in AS 100 to influence incoming traffic for the 91.7.0.0/16 network

Question 68

An enterprise that runs numerous proprietary applications has major issues with its on-premises server estate hardware, to the point where business-critical functions are compromised. The enterprise accelerates plans to migrate services to the cloud. Which cloud service should be used if the enterprise wants to avoid hardware issues yet have control of its applications and operating system?

  1. SaaS
  2. PaaS
  3. IaaS
  4. hybrid cloud

Question 69

How must the queue sizes be designed to ensure that an application functions correctly?

  1. The default queue sizes are good for any deployment as it compensates the serialization delay.
  2. The queuing delay on every device in the chain must be exactly the same to the application required delay.
  3. Each individual device queuing delay in the chain must be less than or equal to the application required delay.
  4. The sum of the queuing delay of all devices plus serialization delay in the chain must be less than or equal to the application required delay.