Nokia 4A0-N01 問題集

質問 1：
What statement is TRUE regarding the security policies provided by Nuage VCS?
A. Each policy entry has an associated priority that defines the order in which policy entries are evaluated.
B. The default ingress security policy allows all traffic to be forwarded.
C. Ingress security policy controls the traffic flowing into the virtual machine.
D. The match criteria in security policies can be based on MAC address, IP address and TCP/UDP port number.
正解：D

質問 2：
What statement is TRUE regarding ingress security policies?
A. It is executed right after the floating IP NAT.
B. By default, all traffic is dropped at ingress.
C. An ingress security policy controls the traffic flowing into the virtual machine.
D. It is executed right after the forwarding policy.
正解：D

質問 3：
What impact does server virtualization have on a traditional datacenter network?
A. Server virtualization requires a hardware upgrade of the network devices (for example, TOR/EOR switch, leaf and spine routers) in a traditional datacenter network.
B. Traffic between the virtual machines must be carried in the overlay network, which is not supported by a traditional datacenter network.
C. Server virtualization requires a software upgrade of the network devices (for example, TOR/EOR switch, leaf and spine routers) in a traditional datacenter network.
D. Traditional network configuration involves manual interaction, which cannot keep up with the dynamic reallocation of compute resources to virtual machines.
正解：C

質問 4：
What statement is TRUE regarding service chaining provided by Nuage VCS?
A. Service chaining is flow-based traffic redirection.
B. It consists of packets being forwarded by the local VPLS, then through the enterprise VPRN and lastly the backhaul VPLS.
C. A virtual firewall is required to perform service chaining.
D. Service chaining only works for virtual appliances.
正解：D

質問 5：
What statement about statistics rules on Nuage VCS is FALSE?
A. Statistics are pushed from VRS up to VSC, which in turn sends them to the VSD stats engine.
B. Users can define statistics rules for domain/zones/subnets/vPorts. The rule applied to the most granular object is the one used.
C. Statistics are collected in an Elasticsearch statistics engine and are aggregated over hours, days, and months.
D. When a TCA threshlod is exceeded, an event is displayed in the UI and a message is sent on the JMS bus.
正解：B

質問 6：
Refer to the diagram.

Which statement is describing a step incorrectly?
A. Step a, which consists of defining network domain and policy templates on VSD, must be performed first in all situations.
B. Step e, in which the forwarding tables are deployed, consists of the VSC sending them not only to the VRS agent hosting the new VM, but to all applicable VRS agents.
C. Step d, which refers to the VRS agent informing the VSC of the placement of a new VM, is triggered by step f in which the VM is instantiated on a hypervisor.
D. Step b, in which the VSC queries VSD on network service and policies required for a new VM, is triggered either by API calls from the CMS or by manual configuration.
正解：B