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Exam : Cisco 642-971
Title : Data Center Networking Infrastructure Design Specialist


1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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