Module 13 - Network Virtualization Pre-Assessment

Which cloud computing opportunity would provide the use of network hardware such as routers and switches for a particular company?

• browser as a service (BaaS)

• infrastructure as a service (IaaS)

• software as a service (SaaS)

• wireless as a service (WaaS)

Answer explanation

This item is based on information contained in the presentation. Routers, switches, and firewalls are infrastructure devices that can be provided in the cloud.

Which type of hypervisor would most likely be used in a data center?

• Type 1

• Type 2

• Nexus

• Hadoop

Answer explanation

The two type of hypervisors are Type 1 and Type 2. Type 1 hypervisors are usually used on enterprise servers. Enterprise servers rather than virtualized PCs are more likely to be in a data center.

Which is a characteristic of a Type 1 hypervisor?​

• does not require management console software

• installed directly on a server​

• installed on an existing operating system​

• best suited for consumers and not for an enterprise environment

Answer explanation

Type 1 hypervisors are installed directly on a server and are known as "bare metal" solutions giving direct access to hardware resources. They also require a management console and are best suited for enterprise environments.​

What component is considered the brains of the ACI architecture and translates application policies​?

• the Nexus 9000 switch

• the Application Policy Infrastructure Controller

• the Application Network Profile endpoints

• the hypervisor​

Answer explanation

The ACI architecture consists of three core components: the Application Network Profile, the Application Policy Infrastructure Controller, which serves as the brains of the ACI architecture, and the Cisco Nexus 9000 switch. ​

Which two layers of the OSI model are associated with SDN network control plane functions that make forwarding decisions? (Choose two.)​

• Layer 1

• Layer 2

• Layer 3

• Layer 4

• Layer 5

Answer explanation

The SDN control plane uses the Layer 2 ARP table and the Layer 3 routing table to make decisions about forwarding traffic.

What pre-populates the FIB on Cisco devices that use CEF to process packets?

• the routing table

• the ARP table

• the DSP

• the adjacency table

Answer explanation

CEF uses the FIB and adjacency table to make fast forwarding decisions without control plane processing. The adjacency table is pre-populated by the ARP table and the FIB is pre-populated by the routing table.​

What is a function of the data plane of a network device?

• resolving MAC addresses

• building the routing table

• forwarding traffic flows

• sending information to the CPU for processing

Answer explanation

Networking devices operate in two planes; the data plane and the control plane. The control plane maintains Layer 2 and Layer 3 forwarding mechanisms using the CPU. The data plane forwards traffic flows.

Which statement describes the concept of cloud computing?

• separation of application from hardware

• separation of operating system from hardware

• separation of control plane from data plane

• separation of management plane from control plane

Answer explanation

Cloud computing is used to separate the application or service from hardware. Virtualization separates the operating system from the hardware.

Which cloud model provides services for a specific organization or entity?

• a hybrid cloud

• a community cloud

• a public cloud

• a private cloud

Answer explanation

Private clouds are used to provide services and applications to a specific organization and may be set up within the private network of the organization or managed by an outside organization.

What two benefits are gained when an organization adopts cloud computing and virtualization? (Choose two.)

• provides a "pay-as-you-go" model, allowing organizations to treat computing and storage expenses as a utility

• enables rapid responses to increasing data volume requirements

• elimination of vulnerabilities to cyber attacks

• distributed processing of large data sets in the size of terabytes

• increases the dependance on onsite IT resources

Answer explanation

Organizations can use virtualization to consolidate the number of required servers by running many virtual servers on a single physical server. Cloud computing allows organizations to scale their solutions as required and to pay only for the resources they require.