Which of the following is a host-centric overlay solution for a modern data center?
A.
SPBM
B.
TRILL
C.
VXLAN
D.
VPLS
Answer:
C
Explanation: Modern data center, traditional technologies are limiting the speed, flexibility, scalability, and manageability of application deployments. There is emerging interest in the industry in overlay technologies (such as MPLS, VXLAN, LISP...) Reference: https://community.cisco.com/t5/data-center-documents/cisco-data-center-overlays- with-focus-on- vxlan-slides-from/ta-p/3159545
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A
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C
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Question 5
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 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.
Answer:
A
Explanation: IP address is the remote VTEP IP address or the IP Multicast group address Reference: https://sites.google.com/site/amitsciscozone/home/data-center/vxlan
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50%
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Question 7
What statement about virtual switches is FALSE?
A.
A virtual switch is typically implemented within the hypervisor so that the network is extended onto the server.
B.
Virtual switches are VLAN capable.
C.
Typically, virtual switches are as capable as physical switches, eg: LAG, hardware-based QoS.
D.
If a virtual switch is not on the hypervisor, all traffic will go out of the physical NIC.
Answer:
D
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A
50%
B
50%
C
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Question 8
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
Answer:
D
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Question 9
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.
Answer:
D
Explanation: Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources Reference: https://www.ibm.com/blogs/cloud-computing/2014/02/04/cloud-computing-basics-2/
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Question 10
What statement regarding active/standby VSD cluster is TRUE?
A.
Both the primary and secondary cluster are running all VSD services.
B.
XMPP connections to the secondary cluster are blocked.
C.
The active/standby mode is also supported in standalone VSD.
D.
VSP components (eg: VSCs) need reconfiguration after failover.
Answer:
C
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Question 11
What function is NOT supported on the Nuage 7850 VSG?
A.
Hardware VXLAN/VLAN gateway
B.
Cloud orchestration
C.
Top of Rack switch/Leaf router
D.
VSC functionality
Answer:
B
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Question 12
If we compare a Nuage Virtual Service Node to a physical service router, which module is VSC mapped to?
A.
Switch fabric
B.
Line card
C.
CPU module
D.
Internal clock
Answer:
A
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. Reference: https://searchstorage.techtarget.com/definition/switching-fabric
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Question 13
What statement is FALSE regarding the relationship between a zone and a subnet within a domain?
A.
Each zone can have multiple subnets.
B.
Each subnet can belong to multiple zones.
C.
A QoS policy defined at the subnet level takes precedence over a QoS policy defined at the zone level.
D.
A security policy applied to the zone impacts all subnets associated to that zone.
Answer:
B
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Question 14
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
Answer:
A
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
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Question 15
What does VSD stand for?
A.
Virtualized Services Description
B.
Virtualized Services Definition
C.
Virtualized Services Domain
D.
Virtualized Services Directory
Answer:
D
Explanation: Nuage Virtual Service Directory (VSD) Reference: https://matscloud.blogspot.com/2017/06/nuage-networks-vsp-deep-dive.html