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830-01 RCPE Certified Professional WAN Optimization Questions and Answers

Questions 4

A customer wants to deploy parallel Interceptor appliances. How should an Interceptor appliance be configured in relation to another parallel Interceptor appliance?

Options:

A.

Peer Interceptor

B.

As a failover buddy

C.

As a peer neighbor

D.

A and B

E.

A, B, and C

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Questions 5

When upgrading from a Steelhead 5050 appliance to a Steelhead 6050 appliance what can be migrated to the new appliance? (Select 2)

Options:

A.

Datastore

B.

Licenses

C.

Network configuration

D.

Optimization configurations

E.

Serial numbers

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Questions 6

Which of the following deployments is incompatible with the Branch Warming feature?

Options:

A.

In-path

B.

Virtual in-path

C.

Out-of-path

D.

WCCP

E.

PBR

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Questions 7

When is it necessary to configure the SRDF Module rules? (Select 2)

Options:

A.

Traffic originated between two EMC DMX arrays

B.

Traffic originated from the Symmetrix FC ports (RF ports)

C.

Traffic originated from the Symmetrix GigE ports (RE ports)

D.

Traffic originated between two EMC V-Max arrays

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Questions 8

A customer with no Steelhead appliances currently deployed wants to test Steelhead Mobile on a client that connects to corporate through a VPN over the Internet. The customer has the requirement that there be no network disruptions during the initial testing phase. Which of the following would work?

Options:

A.

Place a Steelhead appliance in-path behind the WAN router and have the Steelhead Mobile client use auto-discovery rules

B.

Use server-side out-of-path with a Steelhead and use fixed-target rules on the Steelhead Mobile clients

C.

Place a Steelhead in-path directly behind the VPN gateway and use auto-discovery on the Steelhead Mobile client

D.

Use server-side out-of-path with the Steelhead Mobile Controller and use a fixed-target on the Steelhead Mobile client

E.

Place the Steelhead Mobile Controller in-path directly behind the VPN gateway and use auto-discovery on the Steelhead Mobile client

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Questions 9

-- Exhibit –

-- Exhibit --

Refer to the exhibit. A Steelhead administrator has recently decided to implement two Interceptor appliances and one Steelhead appliance on his data center. After configuring the Interceptor, he noticed they are not forwarding traffic to the Steelhead. Why? (Select 2)

Options:

A.

The Steelhead appliance was not added into the Interceptor appliance configuration.

B.

The Interceptor appliance was not added into the Steelhead appliance "add an IC" option on the Steelhead appliance config.

C.

The Interceptor appliance was not added as a connection forwarding neighbor on the Steelhead appliance.

D.

The Steelhead appliance is down.

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Questions 10

A Steelhead administrator has recently decided to troubleshoot a TCP connection. He wants to find out if the Steelhead is adding a probe into the TCP SYN packets. For some reason, he is not being successful on his attempts. What could be the reason? (Select 2)

Options:

A.

He is collecting traffic using tcpdump on the Steelhead LAN interface

B.

He is collecting traffic using tcpdump on the Steelhead WAN interface

C.

He never started a TCP connection, after he started tcpdump

D.

He started a TCP connection, after he started tcpdump

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Questions 11

What configuration policies can be used on the SteelCentral Controller for SteelHead (SCC) for Interceptor deployments?

Options:

A.

The SCC can be used to create all configuration for the Interceptors and its associated SteelHeads, as long as all the devices are in the same SCC group.

B.

The SCC can create in-path rules policies the same as a SteelHead, as long as that is the only page enabled for the Interceptor.

C.

The SCC can be used to configure the cluster of registered Interceptors and SteelHeads. Then, in-path rules and load balancing rules can be pushed to the interceptors.

D.

The SCC can be used to create cluster policies, for the Interceptor to SteelHead connections only and not in-path or load balancing rules.

E.

The SCC can only monitor the health, backup the configuration and upgrade Interceptors. Policies are only for SteelHeads. Interceptors and SteelHead Mobile are not supported.

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Questions 12

A SteelHead is deployed on an 802.1Q trunk in the diagram below. A connection is being optimized from a client on VLAN 20 using Correct Addressing.

Which VLAN ID will be on the inner channel connection?

Options:

A.

10

B.

20

C.

The native VLAN

D.

No VLAN ID

E.

Only VLAN 10 can be optimized. All other are passed through on their original tag

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Questions 13

Citrix optimization does not work although you removed ports 1494 and 2598 from the Interactive Ports label and enabled Citrix optimization on the client-side Steelhead appliance. What could be the problem? (Select 2)

Options:

A.

You need to enable Citrix optimization on the server-side Steelhead appliance.

B.

Secure ICA encryption needs to be enabled.

C.

Citrix CDM optimization needs to be enabled.

D.

You need to restart the optimization service.

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Questions 14

A SteelHead blocks all traffic when the appliance is powered off. What reasons could cause this behavior? (Choose two.)

Options:

A.

This behavior is by design.

B.

Router, switch and SteelHead interfaces have auto MDI/MDIX but incorrect cables have been used.

C.

Fail-to-block is enabled.

D.

The bypass NIC battery has failed.

E.

Router, switch and SteelHead interfaces are hard coded and incorrect cables have been used.

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Questions 15

You are troubleshooting a TCP connection that is not being optimized. On the Current Connections report, you expand the connection and see the pass-through reason is ‘Pre-existing connection’. Without restarting the oprimization service, how could you get this connection to optimize?

Options:

A.

Reset the connection in the Current Connections report.

B.

Create a full-transparency in-path rule for the source and destination hosts.

C.

Create a fixed-target in-path rule for the source and destination hosts.

D.

Enable auto-kick-off on the default in-path rule.

E.

Enable Simplified Routing in ‘all’ mode.

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Questions 16

A customer would like to optimize an in-house application running over UDP. What is required in order to do this? (Choose two.)

Options:

A.

Packet-mode optimization enabled in the General Service Settings.

B.

Auto-Discover UDP rules correctly configured on the client-side SteelHead.

C.

Fixed target rules correctly configured on the client-side and server-side SteelHeads.

D.

An UDP license purchased and installed on all SteelHeads.

E.

Only TCP is supported for optimization on SteelHead appliances.

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Questions 17

You have a SteelCentral Controller for SteelHead Mobile with a policy that includes auto-discovery rules, enabled Location Awareness and set a minimum latency of 10ms. Your client is now in the branch office, has received this policy and the nearest SteelHead is 2 ms away. What will happen to connections?

Options:

A.

The branch steelhead will pass through the traffic because of the RVBD in-path rule.

B.

The SteelHead Mobile client will bypass the branch SteelHead using Enhanced Auto Discovery.

C.

The SteelHead Mobile client will not optimize, letting the branch SteelHead do the optimization.

D.

The branch SteelHead will shut-down the SteelHead mobile client services as they are not needed in branch.

E.

The SteelHead Mobile client will optimize as normal, sharing information with the branch SteelHead.

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Questions 18

A SteelCentral Controller for SteelHead (SCC) shows ≠ against some of the SteelHeads in the list. What exactly does this mean?

Options:

A.

The policy has a conflict with another policy set for the SteelHead or group.

B.

It is a new SteelHead and has not been allocated any policies.

C.

A SteelHead has been moved to a different group and the policies have not been pushed to the SteelHead.

D.

The configuration on the SteelHead might not match the policies configured on the SCC due to a change on the SteelHead or SCC.

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Questions 19

A SteelHead is running RiOS v8.6 and has an inpath0_0 IP address of 192.168.1.10. It is later upgraded from v8.6 to v9.0. As part of an IT project, the inpath0_0 IP address is changed to 10.10.10.10 and the configuration saved. Some time passes and the administrator decides to revert to RiOS v 8.6. It hasn’t been factory reset. The appliance boots and the Management Console User Interface is reachable, however, optimization no longer works. What has happened?

Options:

A.

The web GUI SSL certificate is no longer trusted and the services require a restart.

B.

The licenses are no longer valid and will need to be replaced and the services restarted.

C.

It is not possible to revert to older versions of RiOS and the optimization service has stopped as a precaution.

D.

The configuration has reverted to the one running under v8.6 and the inpath0_0 IP address is back to 192.168.1.10.

E.

The configuration has been lost and the appliance is running factory default settings.

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Questions 20

-- Exhibit –

-- Exhibit --

Refer to the exhibit. On the Current Connections report, what does the number under "WAN KB" represent?

Options:

A.

Segments

B.

Datagrams

C.

References

D.

Packets

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Questions 21

SteelHead SaaS is configured using the default redirection port. Which statement correctly describes the configuration that must be applied to a firewall at the branch location?

Options:

A.

Allow UDP 9545 from/to In-path interfaces

B.

Allow 443 traffic from/to Primary interface

C.

Allow TCP 9545 from/to In-path interfaces

D.

Allow TCP 9545 from/to Primary interfaces

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Questions 22

What do the log messages below mean?

Aug 30 18:19:27 SH pm[18716]: [pm.ERR]: Output from sport:

/opt/rbt/bin/sport (pid 11304) received signal 6 (SIGABRT) dumping core

Options:

A.

The SteelHead has been rebooted via the GUI or the CLI (init 6)

B.

The Optimization Service indicated that a thread was busy

C.

The Optimization Service received a signal to generate a system dump

D.

The Optimization Service terminated normally

E.

The Optimization Service crashed

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Questions 23

If data store synchronization is to be successful, which of these must be true?

Options:

A.

There must be a resilient path between the SteelHeads to prevent a split brain situation.

B.

The in-path IP addresses must be reachable from each other and connected physically in-path.

C.

The SteelHeads must be the same model and run the same RiOS version.

D.

The master must be the same or larger data store than the backup.

E.

The SteelHeads must be in a serial cluster arrangement.

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Questions 24

Why should you use promiscuous mode on each in-path virtual NIC for Virtual Steelhead appliance? (Select 2)

Options:

A.

For LAN/WAN Virtual NICs to intercept traffic not destined for the virtual machine

B.

This configuration is mandatory for traffic optimization

C.

Promiscuous mode is not required

D.

Only verbose mode should be configured

E.

Only regular mode should be configured

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Questions 25

Which of the following features are available with the Virtual Steelhead appliance? (Select 2)

Options:

A.

RSP

B.

HSTCP

C.

Fail-to-wire

D.

PFS

E.

Datastore synchronization

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Questions 26

The primary purpose of setting proxies (found on Networking – Proxies) on the Interceptor is to:

Options:

A.

Allow for a Web or FTP proxy when specifying a URL on the Management Console or CLI

B.

Allow for another Interceptor to redirect on behalf of the current Interceptor

C.

Allow for Steelhead appliances to dynamically handle the load of another Steelhead appliance

D.

Allow for two Interceptor appliances to act redundantly in a serial configuration

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Questions 27

You can monitor your Steelhead appliance disk performance using which reports? (Select 2)

Options:

A.

Data Store Cost

B.

Data Store Performance

C.

Disk Load

D.

SDR Hit

E.

Disk Pressure

F.

Disk Alarm

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Questions 28

Two Steelhead appliances deployed in-path at different offices cannot auto-discover each other. What technique can be used to “force” the two Steelhead appliances to optimize traffic between each other?

Options:

A.

Change the TCP port the Steelhead appliances use for their in-path connections to 7810

B.

Disable the auto-discovery feature on the Steelhead appliances

C.

Create auto-discovery rules that map to each Steelhead appliance's in-path IP address

D.

Create fixed-target rules on each Steelhead appliance using the in-path IP address of the other Steelhead appliance, and use port 7800

E.

Use the “enable probe” command from the CLI

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Questions 29

Peer affinity is most closely related to:

Options:

A.

Parallel Interceptor redirection based on Sport ID and client IP

B.

Serial Interceptor redirection based on Sport ID to server

C.

Segstore ID Steelhead mapping based on Sport ID of Steelhead appliances

D.

The shipyard from which Riverbed is most likely to ship Interceptors

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Questions 30

When configuring failover, in what manner must you configure your Steelhead appliances?

1) Master/Backup

2) Primary/Secondary/Tertiary

3) Master/Master

4) Backup/Backup

5) Primary/Principle

Options:

A.

1

B.

2

C.

3, 4

D.

1, 3, 4

E.

1, 2, 3, 4, 5

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Questions 31

Which of the following control messages are NOT used by WCCP? (Select 2)

Options:

A.

PEEK_A_BOO

B.

I_SEE_YOU

C.

REDIRECT_ASSIGN

D.

REMOVAL_QUERY

E.

KEEPALIVE

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Questions 32

The Xbridge feature on Interceptor provides:

Options:

A.

Significant line-throughput improvement for optimized and pass-through traffic for 10 Gbps interfaces.

B.

Significant line-throughput improvement for optimized traffic for 10 Gbps interfaces.

C.

Significant line-throughput improvement for optimized traffic for 10 Gbps and 1 Gbps interfaces.

D.

Significant line-throughput improvement for optimized and pass-through traffic for 1 Gbps interfaces.

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Questions 33

Assuming auto-discovery is used, WCCP redirect-in statements would normally be placed on which router interfaces? (Select 2)

Options:

A.

The interface that the Steelhead appliances are connected to

B.

The interface on the WAN side

C.

The interface on the LAN side

D.

The loopback interface

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Questions 34

-- Exhibit –

-- Exhibit --

Refer to the exhibit. The connection from USER1, going to SERVER2 is not being optimized by SH10. What is the possible cause? (Select 2)

Options:

A.

The connection was forwarded to another Steelhead.

B.

This connection was pass through.

C.

Connection forwarding is working.

D.

This connection was never established.

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Questions 35

In the exhibit,

there is a resident firewall inside the WAN cloud that drops packets with any TCP option. The customer allows you to use fixed-target rules instead. The firewall policy can only allow unassigned ports 7750-7751 to pass-through it. Additionally, the SH3 has been configured with service port 7750, while SH4 has been configured with service port 7751. Which of the following fixed-target rule specification is correct?

Options:

A.

The fixed-target rule at SH4 peers to the inpath0_0 IP address of SH3 as the target appliance with port number 7800. The fixed-target rule at SH3 peers to the inpath0_0 IP address of SH4 as the target appliance with port number 7800.

B.

The fixed-target rule at SH4 peers to the inpath0_0 IP address of SH3 as the target appliance with port number 7810. The fixed-target rule at SH3 peers to the inpath0_0 IP address of SH4 as the target appliance with port number 7810.

C.

The fixed-target rule at SH4 peers to the inpath0_0 IP address of SH3 as the target appliance with port number 7750. The fixed-target rule at SH3 peers to the inpath0_0 IP address of SH4 as the target appliance with port number 7750.

D.

The fixed-target rule at SH4 peers to the inpath0_0 IP address of SH3 as the target appliance with port number 7751. The fixed-target rule at SH3 peers to the inpath0_0 IP address of SH4 as the target appliance with port number 7750.

E.

The fixed-target rule at SH4 peers to the inpath0_0 IP address of SH3 as the target appliance with port number 7750. The fixed-target rule at SH3 peers to the inpath0_0 IP address of SH4 as the target appliance with port number 7751.

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Questions 36

What is the default Connection Forwarding keep alive interval?

Options:

A.

1 second

B.

3 seconds

C.

5 seconds

D.

10 seconds

E.

15 seconds

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Questions 37

Select the command needed to add support for virtual in-path to your Steelhead appliance so that you can use WCCP or PBR with a Steelhead appliance.

Options:

A.

in-path inpath0_0 enable

B.

in-path oop enable

C.

ip virtual enable

D.

in-path virtual enable

E.

in-path wccp_pbr enable

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Questions 38

Place the following commands to upgrade a Steelhead appliance from the CLI in the correct order. (NotE. include only the necessary steps)

1) SH (config) image install image.img 2

2) SH (config) image fetch http://server/path/image.img

3) SH (config) boot system 2

4) SH (config) restart clean

5) SH (config) reload

6) SH (config) write memory

Options:

A.

1, 2, 3, 4, 5, 6

B.

2, 3, 5, 1, 6

C.

1, 2, 5, 4

D.

2, 1, 3, 6, 5

E.

1, 2, 3, 6, 5

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Questions 39

What is the default trap severity for system messages?

Options:

A.

Debugging

B.

Informational

C.

Notice

D.

Warning

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Questions 40

The port used by the Steelhead appliance for connection forwarding is:

Options:

A.

7810

B.

7850

C.

7801

D.

7820

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Questions 41

What is the CLI command for starting the Configuration Wizard?

Options:

A.

# configuration wizard start

B.

(config) # configuration jump-start

C.

# configuration start

D.

(config) # wizard start

E.

restart clean

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Questions 42

What is the process for dropping the connection of an individual user that is currently being optimized? As an example, consider an HTTP connection being optimized with a local address of 192.168.5.10 and remote address of 192.168.5.90. (Select 2)

Options:

A.

From the GUI, under Connections, select the connection and click on the Reset button

B.

From the GUI, under Connections, select the connection and click on the Drop button

C.

From the CLI: tcp connection send reset local-only local-addr 192.168.5.10:9999 remote-addr 192.168.5.90:80

D.

From the CLI: tcp connection send reset remote-only local-addr 192.168.5.10 local-port 7800 remote-addr 192.168.5.90 remote-port 80

E.

From CLI: tcp reset user 192.168.5.10

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Questions 43

How do you clean the datastore on a Steelhead appliance?

1) > restart empty

2) > reload clean

3) # restart empty

4) # restart clean

5) (config) # reload clean

Options:

A.

1, 2

B.

2, 3

C.

4, 5

D.

3, 4, 5

E.

1, 2, 3, 4, 5

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Questions 44

When would Simplified Routing Destination Only be used? (Select 2)

Options:

A.

HSRP (Hot Standby Routing Protocol)

B.

VLAN bridging

C.

Multiple firewalls

D.

Bridged network

E.

There is no setting for Destination Only

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Questions 45

Refer to the exhibit.

In order to achieve optimization using auto-discovery for traffic coming from site C and destined to site A in the exhibit, which configuration below would be required?

Options:

A.

In-path fixed-target rule on site B Steelhead appliance pointing to Site A Steelhead appliance

B.

Peering rule on site B Steelhead appliance passing through probes from site C

C.

Peering rule on site B Steelhead appliance passing through probe responses from site A

D.

Both A and C

E.

Both B and C

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Questions 46

In a new physical in-path deployment, you realize that a Steelhead appliance at one of your branch offices is optimizing connections from other sites, however, no connections initiated from that branch office are being optimized. Which of the following is the most likely cause of this problem?

Options:

A.

Duplex mismatch

B.

Bilateral Opportunistic Lock failure

C.

Policy-based routing incorrectly configured

D.

Reversed WAN and LAN cabling

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Questions 47

Refer to the exhibit.

A customer has a server-side out-of-path deployment, and reports that connections from some of their remote branch offices are not being optimized. What is the most likely problem?

Options:

A.

A missing fixed-target rule on the server-side Steelhead appliance

B.

A missing fixed-target rule on the client-side Steelhead appliance

C.

The WAN interface is connected to the server-side Steelhead appliance

D.

The LAN interface is connected to the server-side Steelhead appliance

E.

Using port 7810 in the fixed-target rule instead of 7800

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Questions 48

Refer to the exhibit.

SH3 and SH4 are able to optimize HTTP sessions from Client41 to application host Server31. However, Client41 receives a failure messagE. “ftp connect: Unknown error number” while trying to connect Server32. The same applies to Client42. Note that SH3 and SH4 are in auto-discovery mode. Client41 and Client42 are able to ping Server32. What is the most likely cause of this failure?

Options:

A.

The network interface card (NIC) at Server32 is down

B.

The FTP service running in Server32 is down

C.

An outbound access-list specified at R3f0 denies IP traffic from Client41 and Client42

D.

An outbound access-list specified at R3f0 denies FTP control traffic from Client41 and Client42

E.

The routing protocol between R3 and R4 is configured wrong

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Questions 49

A customer with a new physical in-path installation decides to turn on the optimization service during lunch time on a working day. This is done so that he can see if the users perceive any performance improvement. When starting the optimization service, he does not enable the in-path kickoff option. Assuming there were several already active connections when he starts the optimization service, how will the Steelhead appliances handle these existing connections?

Options:

A.

The Steelhead appliance will optimize all connections, including pre-existing

B.

The Steelhead appliance will pass-through all pre-existing connections, leaving them un-optimized

C.

The Steelhead appliance will reset all pre-existing connections, thus automatically changing their optimization status from un-optimized to optimized

D.

The Steelhead appliance will list the connections as “pre-existing” on the Current Connections page

E.

Both B and D

F.

Both C and D

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Questions 50

A fat pipe is a network that can carry large amounts of data without significantly degrading transmission speed. If you have a fat pipe that is not being fully utilized and you are experiencing WAN congestion, latency, and packet loss as a result of the limitations of regular TCP, which of the following RiOS features will help? (Select 2)

Options:

A.

Enable Forced Burst TCP (FB-TCP)

B.

Enable HighSpeed TCP (HSTCP)

C.

Disable admission control

D.

Lower the Advanced Security Checkflow Parameter (ASCP)

E.

Enable Maximum TCP (MX-TCP)

F.

Enable disk encryption

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Questions 51

What types of operations can be observed under the Manage > Operation History page in the CMC Management Console? (Select 2)

Options:

A.

push

B.

link

C.

abort

D.

fetch

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Questions 52

When using TACACS+ or RADIUS to authenticate management access to the CMC appliance, which of the following is true?

Options:

A.

You are required to supply login credentials to every Steelhead appliance

B.

You will automatically be logged into to every Steelhead appliance

C.

All users will use the same user name and password

D.

It is not possible to use TACACS+ or RADIUS

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Questions 53

Which of the following are valid WCCPv2 control messages? (Select 3)

Options:

A.

I_SEE_YOU

B.

HERE_I_AM

C.

REMOVAL_QUERY

D.

REMOVAL_ACK

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Questions 54

You are using Steelhead appliances in an Oracle Forms environment and are not seeing adequate acceleration. What could be the cause of this?

Options:

A.

You need to install a separate Oracle Forms license

B.

Oracle Forms optimization is enabled by default. However, you must set an in-path rule to enable this feature.

C.

Oracle Forms optimization can only be configured from the command line (CLI)

D.

Oracle Forms optimization only works with Oracle Applications 9i

E.

Oracle Forms optimization only works with Oracle Applications 8i

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Questions 55

Refer to the exhibit.

You configured CIFS prepopulation at Corp-A but it is not working. What is likely the cause of the issue?

Options:

A.

CIFS prepopulation requires WCCP

B.

Primary interface needs to be on a different subnet

C.

CIFS prepopulation requires a fixed-target rule

D.

The Primary interface needs to be on the LAN side of the Steelhead appliance

E.

CIFS prepopulation requires SMBv2

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Questions 56

On the Interceptor appliance, the Neighbor Peers page shows which of the following?

Options:

A.

Optimized connections, Admission Control connection count

B.

Optimized connections, Pass-through connections count

C.

Current Connections per Second (CPS), Admission Control count

D.

Packets per second, Connections per Second, Optimized connections count

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Questions 57

WCCP protocol has a methodology of load balancing with two or more Steelhead appliances. What are the maximum number of buckets able to be used for the MASK assignment?

Options:

A.

8

B.

32

C.

64

D.

128

E.

256

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Questions 58

Refer to the HTTP trace exhibit.

You noticed in the HTTP reports that you are not seeing any hits. What is required in order for HTTP optimization to work?

Options:

A.

Client request is missing the “Cache” header

B.

Keep-alive timeout on the server it too short

C.

Server does not support HTTP 1.1 extensions

D.

The “Content-Length” is too long. The HTTP blade can only handle 16K of data.

E.

Server is not setting a cookie

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Questions 59

What are the four types of policies on a CMC appliance?

Options:

A.

Networking, Optimization, Software, System

B.

Networking, Optimization, Rules, System

C.

Networking, Optimization, Security, System

D.

Networking, Acceleration, Security, System

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Questions 60

Which section of the Steelhead appliance Management Console can help identify speed/duplex errors? (Select 2)

Options:

A.

View Logs

B.

Current Connections

C.

Alarm Status

D.

Interface Statistics

E.

Monitored Ports

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Exam Code: 830-01
Exam Name: RCPE Certified Professional WAN Optimization
Last Update: Dec 22, 2024
Questions: 402

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