Network+ Lesson 7 - Corporate and Datacenter Architectures

Which convergence technology seeks to unify the SAN and the LAN?

• FCoE

• iSCSI

• IB

• Fibre Channel

Answer explanation

The Fiber Channel over Ethernet (FCoE) technology seeks to unify the storage area network (SAN) and the local area network (LAN). This approach encapsulates fiber channel traffic in Ethernet frames for transport over the converged network infrastructure.

Which of these is an example of an east-west traffic flow in a modern data center?

• A client uploading large numbers of archive files for storage

• A client downloading of a large number of archive files from a SAN

• A client requesting email from a datacenter SaaS email solution

• A container requesting services provided by another container in the solution

Answer explanation

In SDN, a great example of east-to-west traffic flow is a container requesting services provided by another container in the solution, that is, container-to-container (or VM-to-VM) traffic in the datacenter. East-to-west traffic flow is the flow of traffic in a datacenter, where the traffic moves horizontally between devices.

BGP is an example of a technology found in what layer/plane of operation?

• Management

• Policy

• Data

• Control

Answer explanation

Border Gateway Protocol (BGP) is an exterior gateway protocol used to share prefixes across the Internet. It can also be used to route internally for very large organizations, and it is an example of a control layer/plane technology.

Which layer of the three-tiered model is MOST likely to feature large amounts of security and load balancing and is also often responsible for setting policy?

• Core

• Access/edge

• Distribution / aggregation

• Workstation

Answer explanation

The distribution/aggregation layer is most concerned with QoS and setting policy. It features large amounts of security and load balancing.

Which layer of the three-tiered model is mostly concerned with speed?

• Policy

• Distribution / aggregation

• Access / edge

• Core

Answer explanation

The core layer of the three-tiered model is mostly concerned with raw speed.

How does Cisco ACI spine and leaf model implement connectivity?

• By connecting each spine device to every other spine device

• By connecting each leaf device to each spine device

• By connecting each spine device to every other device

• By connecting each leaf device connect to each other leaf device

Answer explanation

Each leaf device connects to each and every spine device to provide a full mesh of all the leaves for every spine