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642-978 Cisco Cisco Data Center Unified Computing Design Specialist Qualifier Exam
http://www.twpass.com/twpass.com/exam.aspx?eCode= 642-978
The 642-978 practice exam is written and formatted by Certified Senior IT Professionals working in today's prospering companies and data centers all over the world! The 642-978 Practice Test covers all the exam topics and objectives and will prepare you for success quickly and efficiently. The 642-978 exam is very challenging, but with our 642-978 questions and answers practice exam, you can feel confident in obtaining your success on the 642-978 exam on your FIRST TRY! Cisco 642-978 Exam Features - Detailed questions and answers for 642-978 exam - Try a demo before buying any Cisco exam - 642-978 questions and answers, updated regularly - Verified 642-978 answers by Experts and bear almost 100% accuracy - 642-978 tested and verified before publishing - 642-978 exam questions with exhibits - 642-978 same questions as real exam with multiple choice options Acquiring Cisco certifications are becoming a huge task in the field of I.T. More over these exams like 642-978 exam are now continuously updating and accepting this challenge is itself a task. This 642-978 test is an important part of Cisco certifications. We have the resources to prepare you for this. The 642-978 exam is essential and core part of Cisco certifications and once you clear the exam you will be able to solve the real life problems yourself.Want to take advantage of the Real 642-978 Test and save time and money while developing your skills to pass your Cisco 642-978 Exam? Let us help you climb that ladder of success and pass your 642-978 now!
642-978
QUESTION: 1 Which two Cisco products complement the Cisco SFS family of products to provide serverside InfiniBand integration? (Choose two)
A. iSCSI HCA B. Fibre Channel HCA C. InfiniBand switch modules D. Fibre Channel switch modules E. InfiniBand HCA card for IBM and Dell servers Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=1 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 2 What are two MDS features that increase the efficiency of a multiple switch Fibre channel fabric? (Choose two)
A. Port Channel B. COP C. FCP D. FCC E. CUP Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=2 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 4 Which Cisco product is deployed for content routing purposes?
A. Cisco ACE GSS B. Cisco ACE appliance C. Cisco content Engine 500 D. Cisco ACE module Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=4 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 7 Which two Cisco service modules can be deployed in redundant pairs with active active fail over?
A. ACE
B. CSM C. NAM D. FWSM E. SSLSM Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=7 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 8 Used in combination with DHCP snooping, which feature helps prevent spoofing attacks in the data center access layer?
A. RPF B. Port security C. RFC 3704 filtering D. Dynamic ARP Inspection Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=8 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 11 Refer to the exhibit Asymmetric connection attempts in the aggregation layer are occurring on redundant Cisco Catalyst 6500 Series FWSM modules what change might prevent this problem?
A. Implement route tuning and root guard B. Add more Cisco Catalyst 6500 Series FWSM modules to each Cisco Catalyst 6500 switch. C. Reduce the over subscription on the aggregation-to-access links. D. Configure round-robin load balancing between the Cisco Catalyst 6500 Series FWSM modules. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=11 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 12 Refer to the exhibit What port type should be used between two switches to maximize performance?
A. B B. E C. F D. NL E. TE Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=12
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QUESTION: 13 Which two functions enable lossless Ethernet in data center devices? (Choose two)
A. Classical QoS B. InfiniBand support C. Policy flow control D. Collision avoidance support E. CoS-based bandwidth management Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=13 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 16 Which recommendation applies to OSPF in the data center core?
A. Do not permit route distribution with RH I. B. Run OSPF on all VLANs to reduce convergence time. C. Adjust OSPF reference bandwidth for VLANs with 1O-Gigabit Ethernet links. D. Advertise all routes into a NSSA and summarize default routes out. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=16 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 18 Which factor is most strongly influencing adoption of 10 Gigabit Ethernet at the server level?
A. blade server use B. storage requirements C. mainframe IP connectivity D. smaller Layer 2 fault domain needs Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=18 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 22 Which module provides a fabric-based virtualization for multiple independent software vendors?
A. Storage Service Module B. IP ServicesModule C. Multiservice Module D. Cisco MDS 9513 Supervisor 2
Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=22 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 23 Which benefit results from deploying Cisco Catalyst 4948 Switches in a top-of-rack access layer design?
A. increased taut tolerance B. improved server density C. simpler logical topology D. improved power distribution Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=23 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 26 Which is appropriate in situations where a switched fabric server is required for InfiniBand support, plus Ethernet and Fibre Channel integration?
A. Cisco SFS 3000 B. Cisco SFS 7000 C. Cisco MDS 9000 D. Cisco Virtual Blade Switch Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=26 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 28 Which two are requirements of FCoE in a Cisco nexus environment?
A. Fibre cabling B. Use of jumbo frames C. Spanning tree protocol D. ICP-driven retransmission for flow control E. IEEE 802.3x extensions to enable lossless Ethernet Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=28 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 29 To protect the supervisor of a Cisco Nexus 7000 switch, the CoPP feature performs which two functions? (Choose two)
A. performs broadcast suppression B. drops packets with unknown sources C. focuses on access and authentication attacks
D. separates data plane packets from control plane packets E. provides DoS protection independent from interface capabilities Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=29 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 32 In designing data center core layer throughput for SAN applications, which feature is implemented in a Cisco Nexus 7010 core switch to complement classical QoS?
A. WRR B. WRED C. PAUSE D. CoS-based virtual lanes . Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=32 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 33 Which are two characteristics of the Cisco MDS Series fan modules? (Choose two.)
A. Supervisor modules shut down the fan modules when the air temperature is below a preset threshold. B. If the Fan Status LED turns red, a fan has failed and the module must be replaced. C. Fan modules monitor air temperature and shut down if the temperature exceeds a preset threshold. D. Fan modules do not require the switch to be powered off in order to be replaced. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=33 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 34 Under which two circumstances is Layer 2 adjacency required? (Choose two.)
A. When HSRP is used B. When NSF with SSO is configured C. When NIC teaming is implemented D. When clustered applications are supported E. When multiple access layer switches are attached to an aggregation module Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=34 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 37 Which Cisco Catalyst 6500 Series FWSM mode of operation results in the least impact to IP addressing scheme?
A. Routed B. Bridged C. Transparent D. pass-through Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=37 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 39 Which two are benefits of using a Cisco Nexus 5000 switch for server LAN and SAN connectivity if FCoE is deployed? (Choose two)
A. multiple fault domains B. reduced number of server adapters C. better storage utilization D. reduced cabling E. migration of storage devices from Fibre Channel to FCoE Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=39 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 44 Which two kinds of applications require sustained throughput and are sensitive to latency? (Choose two.)
A. synchronous replication B. asynchronous replication C. OLTP D. tape backup E. e-mail Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=44 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 45 Your customer has a number of data storage requirements: �servers are not responsible for volume management or data migration �storage is provisioned in real time �legacy and heterogeneous storage assets can be consolidated and fully utilized �data can be protected using simplified snapshot and replication techniques �date can be assigned to different classes easily which solution would meet these requirements?
A. VSANs B. Wide-Area Application Services (WAAS) C. fabric-based virtualization D. LUN zoning
E. host-based virtualization Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=45 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 48 Which of these provides fabric-based virtualization for multiple independent software vendors?
A. Storage Services Module (SSM) B. Cisco MDS 9000 32-port 1/2-Gbps Fibre Channel module C. Multiprotocol Services module D. Cisco MDS 9513 Supervisor 2 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=48 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 50 What should be implemented to mitigate man-in-the-middle attacks in the data access layer?
A. VACLs B. PVLANs C. Reverse Path Forwarding D. Dynamic ARP Inspection Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=50 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 51 What is an advantage of Cisco MDS 9000 Distributed Device Alias Services over Fibre Channel aliases?
A. Persist across switch reboots B. Stored on the management server, not on the switch C. Preserved when devices are moved between VSANs D. Simplify SAN migration operations Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=51 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 55 Refer to the exhibit. A customer has four Cisco MDS directors connected into a single SAN. Each of the switches has three VSANs configured that span the whole SAN Domain IDs are statically configured on all the directors for each of the VSANs. Will this topology work?
A. No, because domain IDs are repeating in different VSANs B. No, because domain IDs are repeating within toe blue VSAN.
C. Yes, because domain IDs do not have to be unique. D. Yes, because domain Ds can be dynamically changed by the switches. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=55 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 56 A customer is adopting the Cisco MDS switches in their environment with a goal that they will eventually replace brocade switches. While the two switch types will coexist, they have to use standards-based interoperability mode because of the storage vendor support requirements. Which settings will have to be used within certain values of this interpretability mode to function?
A. Only two VSANs can be used B. Domain IDs between 97 and 127 must be used C. Only port based zoning be used D. Fabric can have maximum three switches Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=56 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 57 A customer wants to connect a McData switch to your Cisco MDS SAN Which interop mode would you choose to maintain the maximum feature set on both sides of the SAN?
A. interop mode 1 B. interop mode 2 C. interop mode 3 D. interop mode 4 Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=57 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 59 What simplifies troubleshooting and enhances protocol stability for OSPF?
A. Using loop back interfaces B. Modifying the SPF delay hold time C. Advertising a default into data centre D. Changing the default reference bandwidth Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=59 -------------------------------------------------------------------------------------------------------------------------------------
QUESTION: 61 What are three advantages of collapsed-core architecture? (Choose three)
A. This design provides the most efficient use of ports because no ports are consumed for ISLs B. The absence of ISLs significantly decreases reliability and manageability C. The absence of any oversubscription increases switch throughput. D. Since there are fewer available paths over which traffic may travel, FSPF values are higher E. Ports can be scaled easily by adding hot-swappable blades without disrupting traffic. F. The highest performance is achieved by director-class swtches, because the high speed backplane provides tow fixed latency between any two ports. Answer: http://www.twpass.com/twpass.com/exam.aspx?ecode=642-978&qno=61 -------------------------------------------------------------------------------------------------------------------------------------
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