4A0-N01 Online Practice Questions and Answers

What benefits does virtualization bring to a data center?

A. Mobility, flexibility, and better resource utilization.

B. Multitasking with prioritized process scheduling.

C. More processing power, memory and disk space.

D. Higher bandwidth, control plane simplification and reduced forwarding tables.

What statement best describes the concept of Policy-Based Automation provided by Nuage Networks?

A. The virtual machines are automatically instantiated according to the specific policy defined in the CMS.

B. Network devices as TOR/EOR switch, and leaf/spine routers, are automatically provisioned based on the configuration policy.

C. The Nuage Networks VCS solution can integrate with any CMS, operate on any hypervisor, and be deployed in any data center network.

D. The overlay network instances are automatically created according to the configuration details defined in a specific policy.

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

Which statement about SDN is correct?

A. Network control is fully integrated into the forwarding plane.

B. SDN supports cloud computing by automating virtual machine instantiation.

C. The API interface provides a way to program the SDN switch directly.

D. The SDN controller provides global provisioning of network devices.

What is the difference between host vPort and bridge vPort?

A. A host vPort is provisioned on VRS-G, while a bridge vPort is provisioned on VSG.

B. A host vPort is provisioned for VLAN traffic, while a bridge vPort is for VxLAN traffic.

C. A host vPort only supports one VLAN, while a bridge vPort can be configured with multiple VLANs.

D. A host vPort requires static MAC address configuration, while a bridge vPort learns MAC addresses dynamically.

Which domain can be extended to a 7750 DCI by GRE tunnels?

A. A managed L2 domain.

B. An unmanaged L2 domain.

C. A subnet within an L3 domain.

D. An L3 domain.

The ML2 plug-in is part of which OpenStack project?

A. Neutron

B. Ironic

C. Nova

D. Heat

What statement is TRUE regarding ingress security policies?

A. An ingress security policy controls the traffic flowing into the virtual machine.

B. By default, all traffic is dropped at ingress.

C. It is executed right after the forwarding policy.

D. It is executed right after the floating IP NAT.

Which statement is TRUE when comparing Virtual Machines and Containers?

A. Virtual Machines are faster to boot.

B. Contained do not need a CMS.

C. All Virtual Machines on the same hypervisor must run the same guest OS.

D. All Containers on the same host use the same OS kernel.