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Wide Area Application Services for Field Engineers : 642-652 Exam

Exam Number/Code: 642-652
Exam Name: Wide Area Application Services for Field Engineers

Exam : Cisco 642652

Title :

Wide Area Application Services for

Field Engineers

Update : Demo

1. After configuring a Cisco WAAS deployment using WCCPv2, you find that you can successfully ping a
data center server from a workstation in the branch office. However, when you attempt to start one of the optimized applications, the application cannot communicate with the server. What is the most likely
cause?
A. There is insufficient disk space on either the edge or core WAE. B. You configured halfduplex mode on the WAE interfaces.
C. You configured autonegotiate duplex mode on the WAE interfaces. D. You deployed the WAE on the same subnet as the users or servers.
Answer: D

2. Refer to the exhibit. Your customer plans to deploy the edge WAE appliances in an offpath, twoarm configuration. The WAE appliances are connected to Cisco Catalyst 6500 Series Switches and use WCCPv2 for traffic interception. The customer wants to minimize the latency added by interception. The customer also wants to know if Layer 2 redirection, rather than GRE tunnels, will improve performance. What should you tell your customer?

A. Layer 2 redirection can be used only in inpath configurations.
B. Layer 2 redirection can be used only in onearm configurations. C. Layer 2 redirection can be used in the customer configuration.
D. GRE tunnels provide better performance than Layer 2 redirection. Answer: C

3. When implementing Windows authentication for WAE management, what is the maximum allowable time skew between each WAE and the Windows domain controller?
A. 1 second
B. 5 seconds
C. 120 seconds D. 300 seconds Answer: D

4. Your customer plans to implement Cisco WAAS using four WAE appliances in a loadbalanced configuration. Which feature must be supported on the switches to which the WAE appliances are

attached?
A. redirect exclusion B. Layer 2 redirection C. WCCPv2
D. WCCPv2 or PBR Answer: C

5. Your customer has deployed Cisco WAAS using ACE for traffic interception. The customer reports that traffic is not being optimized. Which command would you use to troubleshoot network interception?
A. WAECORE# show wccp routers
B. WAECORE# show ip accesslists
C. ACE/Admin# show wccp routers D. ACE/Admin# show rserver detail E. router# show wccp services Answer: D

6. Refer to the exhibit. What are two possible reasons the CORE1 WAE might be displayed as “Offline”?

(Choose two.)
A. The WAE is powered off.
B. The HTTPS service is disabled.
C. The Central Manager service is disabled.
D. The WAE is configured in the same VLAN as the server nodes. Answer: AC

7. Your customer reports that traffic has never been received by the remote device after deploying Cisco
WAAS using WCCPv2 in an offpath configuration. Which two parameters should you verify? (Choose two.)
A. IP SLAs
B. WAE subnet
C. router IP address
D. routing configuration
E. service group redirection

Answer: BE

8. Refer to the exhibit. This partial listing shows output from the show tfo connection summary command. Given this output, which statement is correct?

A. The local WAE policy was configured for LZ compression only? the remote WAE policy was configured
for full optimization.
B. The local WAE policy was configured for LZ compression and TFO optimization? the remote WAE
policy was configured for LZ compression only.
C. Both the local and remote WAE policies were configured for LZ compression only.
D. Both the local and remote WAE policies were configured for LZ compression and TFO optimization, but only LZ compression was applied.
Answer: A

9. You have configured a Central Manager WAE cluster for your customer. After a technician accidentally unplugs the power cord from the primary Central Manager WAE, the network administrator calls you to complain that the standby Central Manager WAE did not automatically assume the primary role. What should you tell this administrator?
A. You must manually initiate failover and fallback processes on the WAE.
B. You should verify that the datafeed.pollrate setting is configured properly.
C. You must manually copy the Central Manager database to the standby Central Manager WAE.
D. You should make sure the two Central Manager WAE appliances are on the same subnet. Answer: A

10. When must WCCPv2 redirect exclusion be configured on the routers? A. when redirect in is used on any interface
B. when redirect in is used on the LAN interface only
C. when redirect in is used on the WAN interface only
D. when redirect out is used on any interface
E. when redirect out is used on the LAN interface only
F. when redirect out is used on the WAN interface only
Answer: D

11. How many IP addresses are required for an inline card in a redundant, serially clustered configuration?
A. none B. one C. two D. four
Answer: A

12. Which two symptoms would you expect to observe in a TCP trace if a Cisco WAE that was optimizing
connections fails? (Choose two.)
A. The receiving node receives TCP segments with invalid sequence numbers and resets the connection.
B. The secondary WAE takes over the connection and the receiving node sees nothing.
C. The receiving node continues normally because it has a session to the originating node. D. All optimized TCP connections handled by that WAE are reset.
E. All optimized TCP connections are taken over by the receiving node. Answer: AD

13. How can you verify that the WAE has joined a Microsoft Windows domain correctly? A. Execute the show windowsdomain command on the WAE.
B. Click the Show Authentication Status button in Central Manager. C. Use the Windows nbtstat command.
D. Use the Windows netstat command. Answer: B

14. Refer to the exhibit. The exhibit shows the result of executing the show wccp services configuration.

What conclusion can you draw from this result?

A. The configuration is valid.
B. The configuration is valid for an inline deployment only.
C. The configuration is valid if a redirect exclude directive has been configured correctly. D. The configuration is not valid.
Answer: D

15. In a Cisco WAAS deployment, what should you check first if your customer is reporting poor performance across all optimized applications?
A. Verify that full duplex is configured on all interfaces.
B. Verify that only one Central Manager WAE is set to active.
C. Verify that PBR has a route map for each direction of traffic flow.
D. Verify that WCCP is configured with one service group in the path of each direction of traffic flow. Answer: A

16. Your customer is using firewalls. What must be permitted to pass through firewalls in order to allow
WAE autodiscovery?
A. TCP SYNACK with data
B. TCPoptions
C. TCP port 139
D. TCP port 445
Answer: B

17. Your customer has configured each Cisco WAE to belong to multiple device groups for monitoring
purposes. However, the customer wants to ensure that the policies are applied to the device from one specific device group. What should you do?
A. You should configure an explicit policy device group.
B. You should configure the other device groups as monitoringonly. C. You should rejoin the WAE to the desired device group.
D. You must remove the WAE from all other device groups. Answer: A

18. How do you access the WAE Central Manager GUI? A. http://(ip_addr_of_WAE)
B. https://(ip_addr_of_WAE):443
C. https://(ip_addr_of_WAE):8080
D. https://(ip_addr_of_WAE):8443
Answer: D

19. How many baseline device groups can be configured for the acceleration feature set?
A. one
B. two C. three
D. as many as needed
Answer: A

20. TCP options are added to which TCP connection establishment messages during Cisco WAAS
autodiscovery?
A. ACK and SYNACK B. SYN and ACK
C. SYN and SYNACK D. SYN and RST Answer: C

21. Your customer has configured traffic interception using PBR and four core WAE appliances. The customer has discovered that Cisco WAAS is not loadbalancing across the WAE appliances, and wants
to know how to diagnose the problem. What should you tell your customer?
A. PBR uses only the firstavailable next hop? only one WAE is used at a time. B. IP SLAs are configured incorrectly.
C. The inbound access list on the core router is configured incorrectly. D. The PBR route map on the edge router is configured incorrectly. Answer: A

22. Refer to the exhibit. What do the status fields shown for the edgewae device indicate?

A. The edgewae device has been activated, but autodiscovery failed.
B. The edgewae device has been activated, but activation did not complete successfully.
C. The Central Manager is awaiting confirmation that device activation completed successfully.
D. The edgewae device has not been activated. Answer: C

23. What is one user authentication method that is supported on Cisco WAE devices? A. LDAP
B. SNMP
C. Kerberos
D. Active Directory
Answer: D

24. Refer to the exhibit. After completing the initial setup script on the Central Manager WAE, your customer executed the commands shown in the exhibit to complete the setup. The customer cannot access the Central Manager GUI.

What happened?

A. The customer forgot to reload the WAE after setting the Central Manager role.
B. The customer forgot to specify the IP address of the secondary Central Manager WAE. C. The customer forgot to issue the cms enable command.
D. The customer forgot to issue the centralmanager address [ip_address] command. Answer: C

25. The command show tfo connection summary displays what? A. which optimizations are applied to each connection
B. the number of optimized connections

C. perapplication optimization statistics
D. whether accelerator services are under load
Answer: A

26. Refer to the exhibit. Six months after deploying a Cisco WAAS solution, your customer reports that CIFS performance has decreased at one of the branch offices. To troubleshoot the problem, you run the show tfo accelerators command on the edge WAE.
Based on the output displayed from the CIFS accelerator service, what is the likely cause of the problem?

A. The CIFS accelerator service failed about four hours ago.
B. The CIFS accelerator service is experiencing an overload condition. C. The CIFS optimization policy is not being negotiated properly.
D. The CIFS accelerator service is functioning properly and is not overloaded. Answer: B

27. Which WAE deployment model must you use to configure PortChannels on the core WAE appliances
to enable load balancing across WAE interfaces? A. onrouter, onearm
B. offrouter, onearm C. onrouter, twoarm D. offrouter, twoarm Answer: B

28. In a Cisco WAAS environment, what is the role of Application Traffic Policies?
A. to associate a flow with a WAE and associate the optimized flow with a device group
B. to associate a flow with a Central Manager and associate the optimized flow with an application definition
C. to associate a flow with an optimization and associate the optimized flow with an application definition
D. to associate a flow with a WAN connection and associate the WAN connection with an application accelerator
Answer: C

29. What is a valid WCCP configuration?
A. 61/inbound on LAN interface, 62/outbound on LAN interface B. 61/outbound on LAN interface, 62/inbound on WAN interface C. 61/inbound on WAN interface, 62/inbound on WAN interface D. 61/inbound on LAN interface, 62/outbound on WAN interface
Answer: A

30. Which associates classified traffic to an application definition and assigns an action?

A. application definitions
B. baseline policies
C. policy maps
D. traffic classifiers
Answer: C

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“Wide Area Application Services for Field Engineers”, also known as 642-652 exam, is a Cisco certification.
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Questions and Answers : 60 Q&As
Updated: March 21st , 2008
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