4A0-N01 Online Practice Questions and Answers

What occurrence is NOT a problem facing a traditional data center network?

A. High packet loss due to the use of the 3-tier hierarchy.

B. Sub-optimal traffic flow.

C. About half of the bandwidth is not used due to links being disabled by STP.

D. High latency for some applications.

Which of the following is a host-centric overlay solution for a modern data center?

A. SPBM

B. TRILL

C. VxLAN

D. VPLS

What information is included in the VTEP (virtual tunnel endpoint) forwarding table?

A. The remote VM IP addresses, the VXLAN ID (VNI) and the remote VTEP.

B. The remote VM MAC addresses, the VXLAN ID (VNI) and the remote VTEP.

C. The remote VM IP addresses, the VXLAN ID (VNI) and the local VTEP.

D. The remote VM MAC addresses, the VXLAN ID (VNI) and the local VTEP.

What is NOT a requirement for modern data center networks to facilitate cloud computing?

A. Multi-tenancy

B. Network automation

C. Virtual machine live migration

D. Network function virtualization

Which statement correctly describes cloud computing?

A. Services are statically provisioned by a cloud service provider.

B. Services are offered as needed through the Internet.

C. SDN is the key enabler for cloud computing.

D. It provides convenient, permanent network access to a shared pool of computing resources.

What statement regarding the VRS-G is FALSE?

A. The VRS-G is the software VXLAN/VLAN gateway of the Nuage VCS solution.

B. The VRS-G is deployed on a hypervisor, following the same deployment requirements as a regular VRS.

C. Virtual machines created on the hypervisor are attached to access ports on VRS-G.

D. The network ports on VRS-G point towards the Nuage overlay VXLAN network.

What statement regarding Openflow sessions in data center networks is TRUE?

A. By default, the Openflow session is established with TCP port 6633.

B. Openflow sessions run between VSCs.

C. Security in mandatory with SSL encryption.

D. Openflow sessions can be established over either the data plane or the management plane.

Which of the following is NOT an improvement provided by the backhaul VPLS?

A. Reducing the number of EVPN on the HV.

B. Reducing the number of VXLAN tunnels.

C. Reducing the size of MAC address table.

D. Reducing the consumption of bandwidth.

What statement about Open vSwitch is TRUE?

A. It is a standard virtual switch that can run on any operating system.

B. It can only be configured using Openflow by an SDN controller.

C. It provides tunneling mechanisms, for example: VXLAN.

D. It supports most of the open protocols, for example: OSPF, BGP.

What statement about the Nuage Networks VCS solution is FALSE?

A. It virtualizes and automates the datacenter network infrastructure.

B. It leverages a variety of open source components such as Openflow and Libvirt.

C. The SDN controller of Nuage Networks VCS, is based on the Nokia 7750 SR OS, which is a proven and highly reliable software component.

D. It requires a specific architecture for its networking hardware infrastructure.