NE NE Network Virtualization 2

Question 1

What is a VTEP (VXLAN Tunnel Endpoint)?

Accepted Answer

A device or software component that encapsulates and decapsulates VXLAN packets

Answer

A VTEP is responsible for encapsulating Ethernet frames into VXLAN UDP packets and decapsulating them at the destination, serving as the edge of the VXLAN tunnel.

Question 2

Which type of hypervisor runs directly on physical hardware without requiring a host operating system?

Accepted Answer

Type 1 hypervisor

Answer

Type 1 (bare-metal) hypervisors run directly on hardware without a host OS; examples include VMware ESXi and Microsoft Hyper-V.

Question 3

What is the primary purpose of GRE (Generic Routing Encapsulation) in network virtualization?

Accepted Answer

To encapsulate a wide variety of network layer protocols inside IP tunnels

Answer

GRE is a tunneling protocol that encapsulates packets of one protocol within IP, commonly used to create point-to-point logical links over an IP network.

Question 4

What is microsegmentation in the context of network virtualization?

Accepted Answer

Applying granular security policies to individual workloads or virtual machines

Answer

Microsegmentation applies fine-grained security policies at the workload or VM level, enabling east-west traffic control within a data center to limit lateral movement.

Question 5

In an SDN architecture, what is the 'northbound API' used for?

Accepted Answer

Communication between SDN applications and the SDN controller

Answer

The northbound API enables SDN applications and business logic to communicate with and program the SDN controller, abstracting the underlying network capabilities.

NE - Network Engineer Practice Test

NE - Network Engineer Practice Test

NE NE Network Virtualization 2