Free Download Cisco 642-996 VCE Test Engine Full Version Now (21-30)

QUESTION 21
When designing a collapsed core data center, which two technologies are used to virtualize the core and aggregation layers? (Choose two.)

A.    FCoE
B.    LISP
C.    HSRP
D.    VDC
E.    VRF

Answer: DE

QUESTION 22
The classical aggregation layer design does not provide isolation on the control plane and on the data plane. What is the solution to this problem?

A.    STP
B.    VDC
C.    Cisco ISO ISSU
D.    HSRP

Answer: B

QUESTION 23
The classical access layer has its limitations due to a high value in which of the following items?

A.    oversubscription
B.    jitter
C.    cost
D.    10 Gigabit Ethernet links

Answer: A

QUESTION 24
Your customer is designing a new data center and would like the aggregation layer to be able to route and have Layer 3 capability. What Cisco platform will meet this requirement?

A.    Cisco Nexus 1000v
B.    Cisco Nexus 5596 without Layer 3 daughter card
C.    Cisco MDS 9506 chassis with supervisor engine
D.    Cisco Nexus 7010 switch with Enterprise Services Package

Answer: D

QUESTION 25
Which technology provides additional scalability and simplification of an Ethernet network, providing more efficient forwarding and eliminating the need for the Spanning Tree Protocol?

A.    OTV
B.    vPC
C.    PVST+
D.    FabricPath

Answer: D

QUESTION 26
Which technology provides the ability to use all links in a LAN topology by providing an active- active path to the upstream switch?

A.    STP
B.    vPC
C.    PVST+
D.    RSTP

Answer: B

QUESTION 27
Classical aggregation layer designs do not provide isolation of the control and data planes. What provides a solution to this limitation?

A.    STP
B.    VDC
C.    ISSU
D.    HSRP

Answer: B

QUESTION 28
What introduces unique implications into the overall Data Center aggregation layer design? (Choose Three.)

A.    High-speed switching fabric with a high forwarding rate
B.    Over-subscription values
C.    Service Modules
D.    IP routing
E.    WAN
F.    Internet Edge

Answer: ABC

QUESTION 29
What are the benefits of an Adapter FEX?

A.    requires fewer adapters, cables, network ports, and network devices
B.    provides the ability to VMware VMotion across data centers
C.    reduces complexity in the data center
D.    works with the IEEE 802.1RB standard

Answer: A

QUESTION 30
Spanning Tree Protocol runs at which functional layer of the data center?

A.    core layer
B.    access layer
C.    application layer
D.    network layer

Answer: B

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