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Nokia Certification 4A0-N01試験と認定テストエンジン
質問 19
To auto-instantiate services on a 7750 DCI, which protocol needs to be enabled between the 7750 SR and
VSD?
- A. Openflow
- B. SNMP
- C. XMPP
- D. BGP EVPN
正解: C
質問 20
Which VSD component provides a south-bound interface for communication with the VSC?
- A. VSD Mediator
- B. Statistics Engine
- C. Policy Management Engine
- D. RESTful API
正解: A
解説:
Explanation
Explanation:
VSD mediator is a VSD Southbound interface used for communication to the VSC.
Reference: https://matscloud.blogspot.com/2017/06/nuage-networks-vsp-deep-dive.html
質問 21
Which mapping between a VSD service abstraction and an overlay service instance is correct?
- A. Subnet-VPRN service instance
- B. Virtual machine -SAP
- C. Domain- VPRN service instance
- D. Zone-VPLS service instance
正解: C
解説:
Explanation/Reference:
Reference: https://matscloud.blogspot.com/2017/06/nuage-networks-vsp-deep-dive.html
質問 22
Which protocol is used for VSC federation?
- A. XMPP
- B. BGP VPN-IPv4
- C. Openflow
- D. BGP EVPN
正解: C
解説:
The VSC uses standard protocols to peer with existing networks, allowing it to discover full network topology and reachability. Through Openflow, it distributes relevant switching and routing information to hypervisors within the virtualized datacenter network.
Reference: http://www.nuagenetworks.net/wp-content/uploads/2015/08/NuageNetworks-Architecture- White-Paper.pdf
質問 23
What three main components comprise the Nuage Networks VCS solution?
- A. VSD, VSC, and VRS
- B. VNS, VRS, and VSG
- C. VSD, VSC, and VSG
- D. VNS, VSC, and VSG
正解: A
解説:
Explanation/Reference: https://www.nuagenetworks.net/products/virtualized-cloud-services/
質問 24
What impact does server virtualization have on a traditional datacenter network?
- A. Server virtualization requires a software 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 hardware 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: A
質問 25
What statement is TRUE regarding a redundant redirection target?
- A. A redundant redirection target can have only 1 virtual IP.
- B. By default, high availability is enabled for all redirection targets.
- C. Traffic will be redirected to all the vPorts within a redundant redirection target.
- D. We can associate at maximum 2 vPorts with a redundant redirection target.
正解: A
質問 26
Which mapping between a VSD service abstraction and an overlay service instance is correct?
- A. Subnet-VPRN service instance
- B. Virtual machine -SAP
- C. Domain- VPRN service instance
- D. Zone-VPLS service instance
正解: C
質問 27
Refer to the diagram.
Which statement is describing a step incorrectly?
- A. 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.
- B. Step a, which consists of defining network domain and policy templates on VSD, must be performed first in all situations.
- 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 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.
正解: D
質問 28
Which of the following is NOT Nuage metadata required when creating a virtual machine?
- A. VLAN ID
- B. Enterprise
- C. Subnet
- D. User
正解: A
質問 29
What statement regarding Openflow sessions in data center networks is TRUE?
- A. Openflow sessions run between VSCs.
- B. By default, the Openflow session is established with TCP port 6633.
- C. Security is mandatory with SSL encryption.
- D. Openflow sessions can be established over either the data plane or the management plane.
正解: C
解説:
SSL (Secure Sockets Layer) is the standard security.
質問 30
What statement about statistics rules on Nuage VCS is FALSE?
- A. Statistics are collected in an Elasticsearch statistics engine and are aggregated over hours, days, and months.
- 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 pushed from VRS up to VSC, which in turn sends them to the VSD stats engine.
- 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 31
What statement correctly describes the difference between a managed Layer 2 domain and an undamaged Layer 2 domain?
- A. In a managed L2 domain, Nuage Networks VCS manages security policies, while in an unmanaged domain, Nuage Networks VCS cannot manage the security policies.
- B. Managed L2 domains can have overlapping IP address pools, while unmanaged L2 domains are not allowed to have overlapping IP address pools.
- C. A managed L2 domain has one or more zones and each zone can have multiple subnets, each with its own IP address pool, while an unmanaged L2 domain does not have zones or subnets.
- D. In a managed L2 domain, Nuage Networks VCS performs DHCP and ARP proxy functions, while in an unmanaged domain VCS has no visibility of IP addresses.
正解: B
質問 32
What statement regarding active/standby VSD cluster is TRUE?
- A. Both the primary and secondary cluster are running all VSD services.
- B. VSP components (eg: VSCs) need reconfiguration after failover.
- C. The active/standby mode is also supported in standalone VSD.
- D. XMPP connections to the secondary cluster are blocked.
正解: C
質問 33
Refer to the diagram.
What is the correct sequence of events for a VM to be instantiated, and for its required network connectivity to be created with the Nuage VCS solution? a. Network domain and policy templates are defined on VSD. b.
VSC queries VSD on network service and policies. c. VSD provides VSC with network service and policies.
d. VRS agent informs VSC of the new VM placement. e. VSC deploys policy to applicable VRS agents. f. VM instantiated on the hypervisor.
- A. f->d->b->a>c->-e
- B. a->f->d->b->c->-e
- C. a->b->c->d->e->f
- D. a->b->c->f->d->-e
正解: A
質問 34
What statement regarding the VRS-G is FALSE?
- A. The VRS-G is deployed on a hypervisor, following the same deployment requirements as a regular
VRS. - B. The network ports on VRS-G point towards the Nuage overlay VXLAN network.
- C. Virtual machines created on the hypervisor are attached to access ports on VRS-G.
- D. The VRS-G is the software VXLAN/VLAN gateway of the Nuage VCS solution.
正解: A
解説:
Explanation
This permits the bridging of the hypervisor-focused overlay networking and physical devices in the data
center.
質問 35
Which of the following interfaces does NOT belong to the underlay network?
- A. Hypervisor interfaces carrying VXLAN traffic
- B. Openflow interface on VSC
- C. Interface on VSD
- D. Control Interface on VSC
正解: C
質問 36
What does VSD stand for?
- A. Virtualized Services Directory
- B. Virtualized Services Definition
- C. Virtualized Services Domain
- D. Virtualized Services Description
正解: A
解説:
Explanation/Reference:
Explanation:
Nuage Virtual Service Directory (VSD)
Reference: https://matscloud.blogspot.com/2017/06/nuage-networks-vsp-deep-dive.html
質問 37
Which statement correctly describes cloud computing?
- A. Services are offered as needed through the Internet.
- B. SDN is the key enabler for cloud computing.
- C. Services are statically provisioned by a cloud service provider.
- D. It provides convenient, permanent network access to a shared pool of computing resources.
正解: D
解説:
Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources
質問 38
If we compare a Nuage Virtual Service Node to a physical service router, which module is VSC mapped to?
- A. Switch fabric
- B. CPU module
- C. Line card
- D. Internal clock
正解: A
解説:
Explanation
The switching fabric is independent of the bus technology and infrastructure used to move data between nodes and also separate from the router. The term is sometimes used to mean collectively all switching hardware and software in a network.
質問 39
Which of the following interfaces does NOT belong to the underlay network?
- A. Interface on VSD
- B. "Control" interface on VSC
- C. Openflow interface on VSC
- D. Hypervisor interfaces carrying VXLAN traffic.
正解: B
質問 40
What statement regarding VSD user management is TRUE?
- A. Each enterprise user belongs to only one user group.
- B. LDAP integration is configured at the VSD global level, and it is not configurable enterprise.
- C. We can create CMS user groups for each enterprise.
- D. Open LDAP and Active Directory can be integrated into VSD.
正解: A
解説:
Easy as adding them to a specific user group.
Reference: https://docs.adobe.com/content/help/en/target/using/administer/manage-users/enterprise/property- channel.html
質問 41
What benefits does virtualization bring to a data center?
- A. Higher bandwidth, control plane simplification and reduced forwarding tables.
- B. Multitasking with prioritized process scheduling.
- C. More processing power, memory and disk space.
- D. Mobility, flexibility, and better resource utilization.
正解: C
質問 42
What statement correctly describes the difference between a managed Layer 2 domain and an undamaged
Layer 2 domain?
- A. A managed L2 domain has one or more zones and each zone can have multiple subnets, each with its
own IP address pool, while an unmanaged L2 domain does not have zones or subnets. - B. In a managed L2 domain, Nuage VCS manages security policies, while in an unmanaged domain,
Nuage VCS cannot manage the security policies. - C. In a managed L2 domain, Nuage VCS performs DHCP and ARP proxy functions, while in an
unmanaged domain VCS has no visibility of IP addresses. - D. Managed L2 domains can have overlapping IP address pools, while unmanaged L2 domains are not
allowed to have overlapping IP address pools.
正解: D
質問 43
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