Networking Fundamentals 12

Which of the following is not a reason why the leaf and spine datacenter topology is superior to the standard three-tier topology?

• The leaf and spine arrangement uses a full mesh switching topology.

• In a leaf and spine topology, all data flows require the same number of hops.

• The leaf and spine topology is less expensive to implement than the three-tier topology.

• The leaf and spine topology uses software-defined networking to direct traffic, rather than blocking ports using the spanning tree protocol.

Which of the following best describes the difference between east-west and north-south traffic in a datacenter?

• East-west describes traffic between devices at the same layer of the OSI model, while north-south describes traffic between OSI model layers.

• East-west is switch-to-switch traffic, while north-south is switch-to-router traffic.

• East-west traffic stays within the datacenter, while north-south traffic does not.

• East-west is backbone traffic among switches and routers, while north-south is traffic to end systems, such as servers.

Top-of-rack switches most commonly form which layer of the datacenter topology?

• Leaf

• Backbone

• Spine

• Core

Which of the following layers in a Software-Defined Network (SDN) architecture consists of hardware devices?

• Application

• Control

• Infrastructure

• Core

In a Software Defined Network (SDN), as defined in the RFC 7426 specification, a plane is a set of resources related to a particular function. Which of the following is not one of the five planes defined in the SDN architecture?

• Forwarding

• Operational

• Control

• Management

• Infrastructure

Ralph is designing the datacenter for his company's new branch office. He is considering various options, including building a new datacenter at the branch office facility, using a colocated datacenter, and creating a virtual datacenter using a public cloud provider. Which of the following statements about the differences between these options are true? (Choose all that apply.)

• A colocated datacenter would be less expensive to implement than a branch office or public cloud datacenter.

• In a branch office or colocated datacenter, Ralph's company would own the hardware.

• In all three datacenter options, the administrators in Ralph's company would be responsible for setting up and managing the hardware.

• In a branch office or colocated datacenter, Ralph's company would be responsible for all utility costs, including heating, cooling, and power.

• A public cloud datacenter is easier to expand than a colocated or branch office datacenter

Which of the following cloud service models enables you to perform a new installation of an operating system of your choice?

• IaaS

• PaaS

• SaaS

• DaaS

• All of the above

When you contract with a provider to obtain email services for your company using their servers in the public cloud, which of the following service models are you using?

• IaaS

• PaaS

• SaaS

• DaaS

• None of the above

Which of the following cloud service models provides the consumer with the most control over the cloud resources?

• IaaS

• PaaS

• SaaS

• DaaS

• IaaS, PaaS, SaaS, and DaaS all provide the same degree of control.

Alice has just created a new Windows Server 2016 virtual machine using remote controls provided by a cloud service provider on the Internet. Which of the following cloud architectures is she using? (Choose all that apply.)

• IaaS

• PaaS

• SaaS

• Public cloud

• Private cloud