The Best Cisco 642-991 Exam Training materials

You just need to get IT-Tests's Cisco certification 642-991 exam exercises and answers to do simulation test, you can pass the Cisco certification 642-991 exam successfully. If you have a Cisco 642-991 the authentication certificate, your professional level will be higher than many people, and you can get a good opportunity of promoting job. Add IT-Tests's products to cart right now! IT-Tests.com can provide you with 24 hours online customer service.

Why do most people choose IT-Tests.com? Because IT-Tests.com could bring great convenience and applicable. It is well known that IT-Tests.com provide excellent Cisco 642-991 exam certification materials. Many candidates do not have the confidence to win Cisco 642-991 certification exam, so you have to have IT-Tests.com Cisco 642-991 exam training materials. With it, you will be brimming with confidence, fully to do the exam preparation.

IT-Tests.com can provide professional and high quality products. It is the industry leader in providing IT certification information. To selecte IT-Tests.com is to choose success. IT-Tests.com's Cisco 642-991 exam training materials is your magic weapon to success. With it, you will pass the exam and achieve excellent results, towards your ideal place.

Exam Code: 642-991

Exam Name: Cisco (Cisco Data Center Unified Fabric Solutions Design (DCUFD) )

If you choose to sign up to participate in Cisco certification 642-991 exams, you should choose a good learning material or training course to prepare for the examination right now. Because Cisco certification 642-991 exam is difficult to pass. If you want to pass the exam, you must have a good preparation for the exam.

IT-Tests.com provide different training tools and resources to prepare for the Cisco 642-991 exam. The preparation guide includes courses, practice test, test engine and part free PDF download.

What is IT-Tests.com Cisco 642-991 exam training materials? There are many online sites provide Cisco 642-991 exam training resources. But IT-Tests.com provide you the most actual information. IT-Tests.com have professional personnel of certification experts, technical staff, and comprehensive language masters. They are always studying the latest Cisco 642-991 exam. Therefore, if you want to pass the Cisco 642-991 examination, please Login IT-Tests.com website. It will let you close to your success, and into your dream paradise step by step.

IT-Tests.com Cisco 642-991 exam training materials praised by the majority of candidates is not a recent thing. This shows IT-Tests.com Cisco 642-991 exam training materials can indeed help the candidates to pass the exam. Compared to other questions providers, IT-Tests.com Cisco 642-991 exam training materials have been far ahead. uestions broad consumer recognition and reputation, it has gained a public praise. If you want to participate in the Cisco 642-991 exam, quickly into IT-Tests.com website, I believe you will get what you want. If you miss you will regret, if you want to become a professional IT expert, then quickly add it to cart.

642-991 (Cisco Data Center Unified Fabric Solutions Design (DCUFD) ) Free Demo Download: http://www.it-tests.com/642-991.html

NO.1 What simplifies troubleshooting and enhances protocol stability for OSPF?
A. using loopback interfaces
B. modifying the SPF delay hold time
C. advertising a default route into the data center
D. utilizing different OSPF process IDs
Answer: A

Cisco exam   642-991   642-991 test questions

NO.2 Refer to the exhibit.
Which mechanism is preferred for traffic load balancing in this topology, when fast convergence is the
design priority?
A. Spanning Tree Protocol
B. Layer 3 Equal-Cost Multipath
C. Multichassis EtherChannel
D. Hot Standby Routing Protocol
Answer: C

Cisco exam simulations   642-991   642-991 practice test   642-991 braindump

NO.3 You have been tasked with designing and implementing a data center network. You are ready to
configure a Cisco Unified Computing System to Nexus 7000 connection. To ensure active/active
forwarding for all VLANs on all Cisco Unified Computing System uplinks toward the Cisco Nexus 7000
switches, what is the correct configuration?
A. VSS between the two northbound Cisco Nexus 7000 switches and leave the fabric interconnects in
their default mode.
B. vPC on the Cisco Nexus 7000 switches with the Cisco Unified Computing System fabric interconnects
running in end-host mode.
C. vPC on the Cisco Nexus 7000 switches with the Cisco Unified Computing System fabric interconnects
running in switch mode.
D. Nothing specific on the Cisco Nexus 7000 switches but enable switch mode on the Cisco Unified
Computing System fabric interconnects.
Answer: B

Cisco practice test   642-991 demo   642-991   642-991 certification   642-991

NO.4 FCoE extends the reach of Fibre Channel throughout the data center by performing which action?
A. encapsulating Fibre Channel frames into Ethernet frames
B. aggregating Fibre Channel by using FC trunking
C. multiplexing Fibre Channel and Ethernet on the same physical media
D. allocating separate EtherChannels for LAN and SAN traffic
Answer: A

Cisco test answers   642-991 original questions   642-991

NO.5 What is one common benefit of U access and inverted U access design topologies for the access layer?
A. They both contain VLANs in switch pairs.
B. They are both forms of a looped design model.
C. They require no STP blocking; all uplinks are active.
D. They both support VLAN extension across aggregation switches.
Answer: C

Cisco answers real questions   642-991   642-991

NO.6 What are three effective ways to service multicast traffic in a data center environment? (Choose three.)
A. deploying VRFs per address family
B. configuring IGMP/PIM in the Cisco Catalyst 6500 Series FWSM
C. configuring IGMP/PIM in the Cisco ACE Module
D. configuring IGMP/PIM in the MSFC on a Cisco Catalyst 6500 switch
E. configuring service modules in transparent or bridged mode
Answer: B,D,E

Cisco   642-991   642-991 exam dumps   642-991 exam

NO.7 What is a primary technology enabler for server I/O consolidation?
A. Fibre Channel
B. virtual SAN
C. Converged Network Adapter
D. virtual device contexts
Answer: C

Cisco   642-991   642-991 test questions   642-991

NO.8 Which two functions enable lossless Ethernet in data center devices? (Choose two.)
A. classical QoS
B. multihop FCoE
C. priority flow control
D. collision avoidance support
E. CoS-based bandwidth management
Answer: C,E

Cisco test questions   642-991   642-991 demo

NO.9 You are deploying a new rack into your data center. This rack requires 10 x 1-Gb connections and 10 x
10-Gb connections. Which product would be best suited, and minimize unused ports, to provide
networking connectivity to this rack?
A. Cisco Nexus 5010 because it supports 10 ports as either 1-Gb or 10-Gb
B. Cisco Nexus 5010 because it supports 20 ports as either 1-Gb or 10-Gb
C. Cisco Nexus 5020 because it supports 16 ports as either 1-Gb or 10-Gb
D. Cisco Nexus 5020 because it supports 32 ports as either 1-Gb or 10-Gb
Answer: C

Cisco   642-991 demo   642-991 braindump   642-991   642-991

NO.10 What is a benefit that results from deploying a top-of-rack equipment design?
A. optimal port utilization in the rack
B. faster convergence for Layer 2 services
C. increased cabling simplicity
D. security enforced at the access layer
E. fewer ports required in the aggregation
F. reduced amount of STP instances
Answer: C

Cisco certification   642-991 answers real questions   642-991 test questions

If you want to choose passing Cisco certification 642-991 exam to make yourself have a more stable position in today's competitive IT area and the professional ability become more powerful, you must have a strong expertise. And passing Cisco certification 642-991 exam is not very simple. Perhaps passing Cisco certification 642-991 exam is a stepping stone to promote yourself in the IT area, but it doesn't need to spend a lot of time and effort to review the relevant knowledge, you can choose to use our IT-Tests.com product, a training tool prepared for the IT certification exams.