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642-355 Exam:Cisco Cisco Storage Networking Design Specialist (CSSDS)
Exam Description
The 642-355 Cisco Storage Networking Solutions Design Specialist (CSSDS) exam is associated with the Data Center Storage Networking Specialization. Candidates can prepare for this exam by taking the Designing Cisco Storage Network (DCSN) course. This exam tests a candidate’s knowledge of selecting and integrating Cisco storage products to design a highly scalable, efficient, high performing storage networking solution based on converged architecture. Cisco Storage Networking Design Specialist professionals understand how to utilize and employ the features and benefits of the Cisco MDS 9000 Series Multilayer Directors and Switches, Cisco MDS 9509 Director Switch, Cisco 9216 Fabric Switch, and Cisco MDS 9120 products to create a high availability storage network design.
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Cisco 642-355
Cisco Storage Networking Solutions Design Specialist
(CSSDS)
Q&A DEMO
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1. Which technology should be used to provide transparent low latency FC transport across a metropolitan area?
A. DWDM B. FCIP
C. iSCSI D. iFCP Answer: A
2. Which statement is true concerning the Cisco MDS switch when operating in native interop mode?
A. The MDS switch can interoperate with Non-MDS switches that are certified by SNIA.
B. The MDS switch can interoperate with Non-MDS switches that support “MDS Native” mode.
C. The MDS switch can interoperate with Non-MDS switches that properly adhere to Fibre Channel switch standards.
D. The MDS switch cannot interoperate with Non-MDS switches. Answer: C
3. A customer has a need to synchronously replicate data from the primary data center to a standby data center that
is 30 kilometers away. The customer owns the fiber between the two data centers and uses the link for Gigabit
Ethernet connectivity today. The Gigabit Ethernet connection is heavily utilized and generally remains at
90-percent utilization. The customer expects that the replication traffic will require approximately 30 MBps, and
is looking for a low-cost solution.
Which replication solution would you recommend? A. FCIP
B. CWDM C. DWDM D. iSCSI Answer: B
4. A customer would like to add Cisco MDS switches to an existing Brocade environment with minimal disruption. The Brocade switches are using PID-0 mode. Which two features will enable the creation of a Cisco-Brocade heterogeneous fabric without restricting the feature set of either switch? (Choose two.)
A. interop mode 1
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B. interop mode 2
C. interop mode 3
D. IVR
E. PortChannels F. CWDM Answer: BD
5. 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
data 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: C
6. Select three advantages of using fabric-based storage virtualization instead of host-based virtualization.
(Choose three.)
A. offers a single point of management
B. supports heterogeneous storage
C. does not require a host agent
D. insulates the hosts from storage changes
E. provides mirroring
Answer: ACD
7. Which are two characteristics of the Cisco MDS Series fan modules? (Choose two.)
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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: BD
8. Your customer is using an IPS-8 module in its data center to provide FCIP connectivity to 20 remote sites. It has encountered connectivity problems at four of the remote sites. After investigating, the customer’s network administrator found that the IPS-8 is sending 2300-byte packets, but the receiving switches at the four remote sites
do not support jumbo frames. What should you do?
A. Disable packet shaping on the IPS-8
B. Reduce the minimum retransmit timeout
C. Disable jumbo frames on the IPS-8
D. Enable Path MTU discovery
Answer: D
9. Your SAN environment requires redundant fabrics with redundant connectivity for 40 database hosts at 2 Gbps
of throughput per host. Which two of these configurations are possible? (Choose two.) A. two 48-port line cards
B. four 48-port line cards C. four 32-port line cards D. six 16-port line cards
E. two 32-port line cards and two 16-port line cards
Answer: BD
10. Your customer wants to implement a SAN with redundant fabrics supporting 600 device ports. Which two
Cisco MDS 9000 Family configurations will meet the customer’s needs? (Choose two.) A. two MDS 9509 switches with redundant Supervisor-1 modules
B. two MDS 9509 switches with redundant Supervisor-2 modules
C. two MDS 9513 switches with redundant Supervisor-1 modules
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D. two MDS 9513 switches with redundant Supervisor-2 modules
Answer: BD
Exam Topics
The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes the guidelines below may change at any time without notice.
Perform a needs analysis that identifies the appropriate Storage Networking topology, protocols, and transport to meet customer’s requirements
Describe the benefits of implementing a Cisco collapsed core SAN network design.
Describe the evolution of SAN topology design.
Evaluate over-subscription ratio for a given design.
Determine if iSCSI is appropriate for design implementation.
Determine SAN Extension requirements for customer solution.
Evaluate deployment opportunities for MDS family.
Evaluate the customer’s applications requirements.
Evaluate the customer’s business continuance requirements.
Evaluate the customer’s backup/replication requirements.
Evaluate the customer’s high availability requirements.
Evaluate the customer’s SAN utilization and propose consolidation options.
Evaluate the customer’s Storage Virtualization implementation strategy.
Evaluate the customer’s Security requirements.
Identify the interoperability requirements of a customer’s SAN
Identify and document existing customer infrastructure.
Identify considerations that should be addressed when designing a heterogeneous fabric.
Design a solution that addresses a customer’s SAN requirements
Describe value added MDS features that address identified customer needs and requirements.
Determine the appropriate topology for a given implementation.
Select the appropriate protocols for design implementation.
Select appropriate collapsed core design given a set of customer requirements.
Select the appropriate design option given a set of customer requirements including applications such as database, mail-server, backup and replication.
Identify characteristics of customer’s host operating systems that could impact their SAN design.
Develop a capacity plan for implementing a Cisco SAN solution.
Identify SAN Extension topology, devices, and features appropriate for a SAN solution.
Propose alternative protocols, topologies, devices, and features that would improve customer solution (cost, performance, etc).
Design an appropriate Cisco management infrastructure.
Determine hardware configurations, power requirements, and environmental considerations to support SAN fabric design.
Design a backup and recovery solution.
Design appropriate IP configurations for a SAN solution
Describe the importance of using appropriate MTU size.
Determine requirements for IP routing.
Design appropriate VLANs for storage solutions.
Determine ACL requirements for storage solutions.
Exam Number/Code: 642-355
Exam Name: Cisco Storage Networking Solutions Design Specialist (CSSDS)
Questions and Answers : 60 Q&As
Updated: May 7th , 2008
Market Price: $125.99
Member Price: $99.99
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