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Wide Area Application Services for Field Engineers

Exam Number: 642-652
Duration: 60 minutes (60 questions)
Available Languages: English
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Exam Description Exam Topics
Exam Description
The Wide Area Application Services for Field Engineers exam (WAASFE 642-652) tests the field engineer candidate’s knowledge and ability to implement a Cisco WAAS solution.

Exam Topics
The following topics are general guidelines for the content likely to be included on the Remote Access exam. However, other related topics may also appear on any specific delivery of the exam.

Implement WAAS components of an ANS solution
Determine appropriate IOS version and upgrade if necessary to meet requirements
Configure & verify networking
Configure & verify router and switch configurations
Configure & verify WAE network configurations
Configure the device modes
Configure & verify central management
Configure & verify reporting & monitoring
Configure & verify AAA and RBAC
Configure & verify device and baseline groups
Configure & verify optimization policies
Configure & verify file services acceleration
Configure & verify print services
Configure and verify load balancing of WAE services
Validate that the deployment meets customer design objectives

Troubleshoot a WAAS solution
Troubleshoot poor performance in a WAAS solution
Troubleshoot connectivity in a WAAS solution
Troubleshoot management in a WAAS solution
Troubleshoot high availability in a WAAS solution
Troubleshoot scalability in a WAAS solution

Question: 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 half-duplex mode on the WAE interfaces.
C - You configured auto negotiate duplex mode on the WAE interfaces.
D - You deployed the WAE on the same subnet as the users or servers.
Answer: D Question: 2
Your customer plans to deploy the edge WAE appliances in an off-path, two-arm 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 in-path configurations.
B - Layer 2 redirection can be used only in one-arm configurations.
C - Layer 2 redirection can be used in the customer configuration.
D - GRE tunnels provide better performance than Layer 2 redirection.
Answer: C Question: 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

TK

Exam Name: Wide Area Application Services for Field Engineers
Exam Type: CISCO
Exam Code: 642-652 Total Questions: 60

D - 300 seconds
Answer: D Question: 4
Your customer plans to implement Cisco WAAS using four WAE appliances in a load-balanced 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 Question: 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 - WAE-CORE# show wccp routers
B - WAE-CORE# show ip access-lists
C - ACE/Admin# show wccp routers D - ACE/Admin# show rserver detail E - router# show wccp services
Answer: D Question: 6
What are two possible reasons the CORE1 WAE might be displayed as “Online”? (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.

TK

Exam Name: Wide Area Application Services for Field Engineers
Exam Type: CISCO
Exam Code: 642-652 Total Questions: 60

Answer: A, C

Question: 7
Your customer reports that traffic has never been received by the remote device after deploying
Cisco WAAS using WCCPv2 in an off-path configuration. Which two parameters should you verity? (Choose two.)

A - IP SLAs
B - WAE subnet
C - router IP address
D - routing configuration
E - service group redirection
Answer: B, E Question: 8
This partial listing shows output from the show tfo connection summary command.

Local-IP:Port Remote-IP:Port ConId PeerId Policy
10.10.13.100:3826 10.10.10.100:80 34755 00:11:25:aa:c1:e8 L,F,L,L

Given this output, which statement is correct?

A - The local WAE policy was configured for LZ compression only; the remote WAL 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 Question: 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 verity 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 Question: 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

TK

Exam Name: Wide Area Application Services for Field Engineers
Exam Type: CISCO
Exam Code: 642-652 Total Questions: 60

F - when redirect out is used on the WAN interface only
Answer: D Question: 11
How many IP addresses are required for an in-line card in a redundant, serially clustered configuration?

A - none B - one C - two D - four
Answer: A Question: 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: A, D Question: 13
How can you verity that the WAE has joined a Microsoft Windows domain correctly?

A - Execute the show windows-domain 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 Question: 14
The exhibit shows the result of executing the show wccp services configuration.

wass-core# sh wccp services
Services configured on this File Engine
TCP Promiscuous 61
What conclusion can you draw from this result? A - The configuration is valid.
B - The configuration is valid for an in-line deployment only.
C - The configuration is valid if a redirect exclude directive has been configured correctly.
D - The configuration is not valid.
Answer: D Question: 15

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

“Wide Area Application Services for Field Engineers”, also known as 642-652 exam, is a Cisco certification.
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