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642-971 Exam

Data Center Networking Infrastructure Design Specialist

Exam Number/Code : 642-971
Exam Name : Data Center Networking Infrastructure Design Specialist
Questions and Answers : 120 Q&As
Update Time: 2013-04-05
Price: ~~$ 119.00~~ $ 69.00
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Exam : Cisco 642-971
Title : Data Center Networking Infrastructure Design Specialist

1. You are a Cisco engineer of TestInside.com. You are implementing the Cisco Nexus environment for the company, so which two are requirements of FCoE in it? (Choose two.)
A. Spanning Tree Protocol
B. Use of jumbo frames
C. TCP-driven retransmissions for flow control
D. IEEE 802.3x extensions to enable lossless Ethernet
Answer: BD

2. Your customer plans to deploy FWSM and IDSM modules in the aggregation layer. Which design should you avoid?
A. Layer 3
B. InfiniBand
C. Layer 2 loop-free
D. Layer 2 looped square
E. Layer 2 looped triangle
Answer: A

3. Refer to the exhibit. Each letter (A-D) represents a model for placement of a default gateway. Which model allows the maximum number of application and security services?
A. model A
B. model B
C. model C
D. model D
Answer: C

4. You are the senior desktop administrator for TestInside.com. You are deploying network for the company. With your experience, which of following two Cisco service modules can be implemented in redundant pairs with active-active failover? (Choose two.)
A. Cisco network analysis module
B. Cisco ACE Application Control Engine
C. Cisco Firewall Services Module (FWSM)
D. Cisco Catalyst 6500 Series SSL Services Module (CVDM-SSLSM)
Answer: BC

5. Which three of the following service modules can be deployed in redundant pairs with active/active failover? (Choose three.)
A. ACE
B. CSM
C. NAM
D. IDSM
E. FWSM
F. SSLSM
Answer: ADE

6. Which data center network-architecture change is a result of the adoption of blade and 1-RU server technologies?
A. Layer 3 fault domains growing larger
B. Layer 2 fault domains growing larger
C. Layer 3 fault domains growing smaller
D. Layer 2 fault domains growing smaller
Answer: B

7. A very large blade-server deployment has high throughput requirements for both data and storage networks. Which access layer option would you recommend?
A. blade server Ethernet switch with Cisco SFS 3000 Series Multifabric Switch
B. blade server InfiniBand switch with Cisco SFS 3000 Series Multifabric Switch
C. blade server Ethernet switch that is connected to Cisco Catalyst 4948 top-of-rack switch
D. blade server Ethernet switch that is connected to Cisco Catalyst 6500 Series end-of-rack switch
Answer: B

8. Refer to the exhibit. What do you need to configure to prevent spanning-tree loops from occurring between the two FWSMs?
A. FWSMs in transparent mode
B. ethertype ACLs to allow BPDUs
C. FWSMs in multiple-context mode
D. failover and state interfaces on the same VLAN
Answer: B

9. How is FCIP traffic marked with DSCP values?
A. The Cisco MDS 9000 Series Multilayer Switch marks one DSCP value per FCIP tunnel.
B. The Cisco MDS 9000 Series Multilayer Switch marks two DSCP values per FCIP tunnel.
C. The aggregation layer Ethernet switch marks one DSCP value per FCIP tunnel.
D. The aggregation layer Ethernet switch marks two DSCP values per FCIP tunnel.
Answer: B

10. Which service module configuration is recommended to automatically detect and block traffic from malicious hosts?
A. FWSM
B. IDSM that is deployed in IDS mode
C. IDSM that is deployed in IPS mode
D. FWSM that is coupled with the NAM
Answer: C

11. What advantage does InfiniBand have over Gigabit Ethernet in HPC environments?
A. lower latency
B. simpler cabling
C. longer distance support
D. more sophisticated traffic management
Answer: A

12. You are a Cisco engineer of TestInside.com. You are configuring the network for the company. The numbers in the ovals stand for the number of ports in each PortChannel(Refer to the exhibit). If VSS is deployed in the top four switches, as far as you know, how many ports at most that the virtual PortChannel in the core can have ?
A. two
B. four
C. six
D. eight
Answer: D

13. Which two security vulnerabilities does the FWSM application inspection engine mitigate? (Choose two.)
A. DoS attacks
B. DDoS attacks
C. SQL injection
D. cookie altering
E. web server worms
Answer: CD

14. Refer to the exhibit.
Your customer is filling server racks sequentially, filling one rack before beginning the next. Which two access layer designs present challenges in this environment? (Choose two.)
A. Layer 3
B. Layer 2 loop-free U
C. Layer 2 looped square
D. Layer 2 looped triangle
E. Layer 2 loop-free inverted U
Answer: AB