642-996 by Cisco Valid Free Exam Practice Test

Question 1

From a data center design perspective, which of the following is true in regard to network management tools like Cisco Data Center Network Manager (DCNM) and CiscoWorks LAN
Management Solution (LMS)?

A. Cisco DCNM is positioned to manage non-Nexus OS gear like the Catalyst 6500 Series,
Catalyst 6500 Series FWSM, and Cisco UCS. B. CiscoWorks LMS should be used to manage the LAN network, while Cisco DCNM will manage the SAN network. C. Platform-specific, advanced data center features should be managed by Cisco DCNM and provided to CiscoWorks LMS. D. Cisco DCNM should be used to manage everything except the aggregation service layer.

Correct Answer: C

Question 2

Which hardware-based security feature mitigates DDoS attacks against the Cisco Nexus switch itself?

A. IP Source Guard B. IP sanity checks C. ACLs D. CoPP

Correct Answer: D

Question 3

Which two options are benefits of credit-based flow control in a Fibre Channel network?
(Choose two.)

A. sends credit to all of the switchesin a SAN zone B. prevents the loss of frames due to buffer overruns C. increases the credit limit when the buffer overruns D. provides automatic buffer scaling under high loads E. maximizes performance under high loads

Correct Answer: B,D

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Question 4

Which statement describes the aggregation layer?

A. It does not process server-to-server flows. B. It maintains session state and connection tables for redundancy. C. Changing application requirements lead to higher oversubscription. D. It has a small STP processing load.

Correct Answer: B

Question 5

Which routing protocol represents the more effective choice to accomplish stability at the data center core?

A. EIGRP B. RIP C. BGP D. OSPF

Correct Answer: D

Question 6

Which statement best describes two-tier data center networks?

A. better fault isolation B. simplified routing-protocol peering C. more frequent switch upgrades D. fewer links

Correct Answer: C

Question 7

Which security feature is available in the Cisco Catalyst 6500 Series FWSM but not in the
Cisco ACE Module?

A. SSL termination B. deep packet inspection C. URL filtering D. NAT E. PAT

Correct Answer: E

Question 8

Which access layer technology will provide redundancy if there is a link failure on a server link?

A. MPLS B. vPC C. VDC D. Cisco OTV

Correct Answer: B

Question 9

Refer to the exhibit.

Server 1 has a significant amount of East/West communication with server 2. How will this traffic be handled?

A. Layer 2 switched within N7K1 B. Layer 2 switched with the vSwitch C. Layer 2 switched within N5K1 D. Layer 3 routed within N5K1 E. Layer 2 switched within N2K1 F. Layer 3 routed within N7K1

Correct Answer: C

Question 10

Which statement describes an IDSM module operating in inline rather than promiscuous mode?

A. higher throughput B. higher latency and lower throughput C. higher latency D. lower throughput E. lower latency and higher throughput F. lower latency

Correct Answer: C

Question 11

Why are server-to-server traffic flows routed through the aggregation layer?

A. They are routed to provide load-balancing services between web and application servers. B. They are routed to provide increased fault-tolerance and smaller STP domains. C. They are routed because individual access modules cannot scale to large HPC deployments. D. Server-to-server traffic flows should never be routed through the aggregation layer.

Correct Answer: A

Question 12

Refer to the exhibit.

Which four options are Cisco best practices that should be included or implemented in the design for resiliency, deterministic behavior, and fast convergence in case of link failures?
(Choose four.)

A. Place the primary FHRP role on N7K-2. B. Use point-to-point OSPF adjacencies. C. Place the primary FHRP role on N7K-1. D. Configure Layer 3 port channels between all N7K devices. E. Add additional OSPF adjacency between N7K-1 and N7K-2 via dedicated Layer 3 link. F. Configure vPC peer-gateway in the vPC domain between N7K-1 and N7K-2. G. All OSPF adjacencies should be between loopback interfaces. H. N7K-3 and N7K-4 must be the OSPF designated routers.

Correct Answer: A,B,E,F

Question 13

Which network tool provides proactive link utilization?

A. SPAN B. Nettool C. Pong D. SMS E. RMON

Correct Answer: E

Cisco Designing Cisco Data Center Unified Fabric - 642-996 Exam Practice Test