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Pass4sure Cisco Storage Networking Exam 642-355 v2.93

Cisco Storage Networking Solutions Design Specialist (CSSDS) : 642-355 Exam

Exam Number/Code: 642-355
Exam Name: Cisco Storage Networking Solutions Design Specialist (CSSDS)

Exam : Cisco 642355

Title :

Cisco Storage Networking

Solutions

Update : Demo

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. Refer to the exhibit. Your customer has an existing SAN with eight edge switches and two core switches. In your detailed assessment, which metric will help you convince the customer to consider an alternative, more highly available topology?

A. SFP characteristics

B. total port count

C. cost of edge switch devices

D. total versus usable ports for end devices

Answer: D

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

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.)

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 D. two MDS 9513 switches with redundant Supervisor-2 modules Answer: BD

11. Refer to the exhibit. A customer plans to add a tape backup subsystem to its existing storage network.

In which location should the customer place the tape backup device in order to provide the best performance during backup and recovery?

A. A

B. B C. C D. D
Answer: B

12. 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

13. Refer to the exhibit. What port type should be used between the two switches to maximize performance?

A. B

B. E C. F

D. NL

E. TE Answer: B

14. Which SAN extension topology is a low-latency, cost-effective, high-bandwidth solution that is suitable only within a limited geographical area?
A. FCIP

B. DWDM C. CWDM
D. SONET/SDH Answer: C

15. 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: A

16. How does Role-Based Access Control (RBAC) enhance manageability in an environment with

VSANs?

A. limits operator errors by isolating user management domains within a large physical infrastructure

B. specifies port membership to a specific VSAN

C. configures security options for host ports that are assigned to a VSAN D. configures VSAN membership for specific trunk ports
Answer: A

17. Your customer uses a custom change-management application. The customer wants running configuration files from Cisco MDS 9000 switches to be saved automatically to an FTP server every night. How can this be accomplished?
A. The customer must purchase Fabric Manager Server to set up automated jobs.

B. The customer must purchase the Enterprise license to enable Batch Job Automation.

C. The customer can use the CFS feature to distribute a command job to each switch in the fabric.

D. The customer can use the CLI Command Scheduler to set up automated jobs. Answer: D

18. Your customer has implemented an IPS-8 for iSCSI connectivity to workgroup servers. How can this customer prevent unauthorized hosts from connecting to the Cisco MDS 9000 fabric through the iSCSI interfaces?
A. Configure RADIUS authentication

B. Configure IPSec encryption on the IPS-8

C. Configure IP ACLs on the IPS-8

D. Configure fabric binding on the IPS-8

Answer: C

19. What is the definition of fan-in ratio as it applies to SANs?

A. the ratio of host ports that need to access a single storage port

B. the ratio of storage ports to a single host port

C. the amount of aggregate port bandwidth in the path from storage port to host port

D. the amount of aggregate bandwidth of ISLs in the path from host port to storage port

Answer: A

20. Your customer has 40 servers attached to the edge switch in a core-edge design. Each server’s average throughput is between 22 and 35 MB. How many 4 GB ISLs should be provisioned between the edge and the core, and what will the ISL oversubscription ratio be?
A. 4, 20:1

B. 8, 5:1

C. 4, 10:1

D. 8, 10:1

Answer: C

21. Which three solutions would be suitable for data replication between two data centers separated by

450 km? (Choose three.)

A. FCIP over routed IP network

B. FCIP over SONET/SDH C. iSCSI over SONET/SDH

D. CWDM

E. DWDM

F. dark fiber

Answer: ABE

22. What are three key benefits of implementing a SAN using iSCSI? (Choose three.) A. uses existing IP networking, monitoring, and management infrastructure
B. is more efficient than FC since it requires fewer encapsulations

C. maintains consistent performance over IP networks of varying distances

D. significant capital cost reduction by substituting iSCSI as a transport technology

E. extends existing FC SAN to IP connected hosts

Answer: ADE

23. Refer to the exhibit. In this scenario, the total bandwidth requirement is 1500 MBps but there are 100

hosts that each need 15MBps of bandwidth. Which two statements are correct about the topologies shown in the exhibit? (Choose two.)

A. If the iSCSI configuration has two IPS-8 modules, it will not be oversubscribed.

B. The Fibre Channel implementation will require 100 HBA ports. C. iSCSI is the more cost-effective solution with high fan-in ratios.
D. The Fibre Channel implementation is the more cost-effective solution with high fan-in ratios.

E. The Fibre Channel implementation would require two 32-port switching modules in the Cisco MDS

switches per fabric. Answer: AC

24. A government agency data center that is used for tax processing is located in an earthquake fault zone. A backup data center, located 300 km away, is linked to the main data center over an OC-3
connection. Which of the following provides the best solution to extend the SAN for business continuance and for support of their IP applications?
A. synchronous replication using FCIP

B. iSCSI

C. FCIP and asynchronous replication

D. dark fiber connectivity and use of synchronous replication over FC Answer: C

25. A customer recently deployed a pair of Cisco MDS 9216i Multilayer Fabric Switches to support an ERP application. The MDS 9216i expansion slot is still unused. The customer examined other infrastructure services and applications to determine if they should leverage the SAN storage capacity, and decided that it would be beneficial to attach eight Microsoft Exchange servers to the SAN. Each
Microsoft Exchange server generally drives approximately 50 MBps of disk throughput and has two Fibre

Channel host bus adapters.

Which line card should be used to support the Microsoft Exchange server SAN connectivity?

A. 16-port Fibre Channel line card

B. 32-port Fibre Channel line card

C. Multiprotocol Services Module line card D. None; use the IP storage interfaces. Answer: B

26. A customer is concerned about the security of its SAN. It wants to prevent unauthorized hosts and switches from connecting to the SAN fabric. Which technology should be enabled on the Cisco MDS 9000
SAN to accommodate this customer requirement? A. DH-CHAP

B. Auto-Learn

C. role-based authorization

D. zones E. SSH Answer: A

27. What effect does VSAN technology have on typical capacity planning for a storage network?

A. Because of the complete isolation of VSANs, more ports are required in a VSAN environment than in a non-VSAN environment.
B. When capacity planning where VSANs will be implemented, each VSAN must be capacity planned independently of all other VSANs.
C. VSANs are over provisioned separately to provide for capacity growth.

D. Unused ports can easily be redeployed for other applications in other VSANs. Answer: D

28. What are two MDS features that increase the efficiency of a multiple switch Fibre Channel fabric?

(Choose two.)

A. Port Channel

B. CDP C. FCP D. FCC E. CUP

Answer: AD

29. Your customer has implemented an IPS-8 for FCIP connectivity to remote sites. How can this customer prevent unauthorized hosts from connecting to the Cisco MDS 9000 fabric through the FCIP interfaces?
A. Configure RADIUS authentication

B. Configure IPSec encryption on the IPS-8

C. Configure IP ACLs on the IPS-8

D. Configure fabric binding on the IPS-8

Answer: C

30. Which Cisco MDS feature alleviates a head-of-line blocking condition when occasional bursts of traffic exceed the capacity of an end device to receive data?
A. VOQs

B. VSAN allowed list

C. FCC D. QoS
Answer: A

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“Cisco Storage Networking Solutions Design Specialist (CSSDS)”, also known as 642-355 exam, is a Cisco certification.
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Updated: May 7th , 2008
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