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830-01 RCPE Certified Professional WAN Optimization Question and Answers

Question # 4

RiOS v7.0 and later, the packet-mode-optimization feature can: (Select 2)

A.

optimize TCP IPv6

B.

optimize UDP IPv6

C.

optimize UDP IPv4

D.

optimize TCP IPv4

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Question # 5

In the exhibit,

where should the WCCP redirection take place for server return traffic, assuming redirect IN is used? (Select 2)

A.

A

B.

B

C.

C

D.

D

E.

E

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Question # 6

The Interceptor appliance cluster can support how many optimized connections?

A.

50,000

B.

100,000

C.

200,000

D.

More than 200,000

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Question # 7

A deployment has two parallel Interceptor appliances (A and B) each across a different link directed at different data center locations. Each data center has one Steelhead appliance (Steelhead-1 or Steelhead-2). The administrator wants probes coming into Interceptor A to be first serviced by Steelhead-1, then Steelhead-2 only if Steelhead-1 is full or unavailable. What is the most appropriate rule to be configured?

A.

A Redirect Load Balancing rule containing Steelhead-1 and Steelhead-2

B.

No Load Balancing rules are needed for the administrator's policy

C.

Two Redirect Load Balancing rules; first rule for Steelhead-1 and second rule for Steelhead-2

D.

Two Redirect Load Balancing rules; first for both Steelhead-1 and Steelhead-2, second one for Steelhead-2

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Question # 8

What is the default behavior of an Interceptor appliance using 2.0 code when its peer Interceptor appliance is unavailable?

A.

Redirect to peer

B.

Pass-through new connections

C.

Block all connections

D.

Deny all connections

E.

Optimize all connections

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Question # 9

Which of the following are configurable attributes of an Interceptor appliance? (Select 3)

A.

Synchronizing datastore

B.

Sharing connection state with a parallel Interceptor appliance

C.

Redirect to a Steelhead appliance cluster

D.

Failover to another Interceptor appliance

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Question # 10

The Interceptor appliance will attempt to redirect a connection to a Steelhead appliance in the auto pool:

A.

When no user defined Load Balancing rules matches AND peer neighbors are defined

B.

When no user defined Load Balancing rules matches AND no peer neighbors are defined

C.

When no peer Interceptor appliances are defined

D.

When a user-defined Load Balancing rule matches AND a target Steelhead appliance is available

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Question # 11

What deployment type supports fail-to-wire?

A.

Physical in-path

B.

Virtual in-path

C.

Out-of-path

D.

Virtual Steelhead appliance

E.

Proxy file server

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Question # 12

What happens to traffic when a Steelhead appliance reports admission control?

A.

Traffic will be interrupted

B.

The Steelhead stops the interception of new connections for optimization for as long as it is in admission control

C.

This is just a report and the Steelhead will continue to optimize traffic

D.

The Steelhead will start optimizing faster any new connections

E.

The Steelhead will shut down in less than a minute

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Question # 13

What service needs to be allowed if you are enforcing outbound security in the Steelhead Mobile solution?

A.

Rbtdebug.exe

B.

Rbtmon.exe

C.

Shmobile.exe

D.

Rbtsport.exe

E.

All of the above

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Question # 14

You would like your Steelhead Mobile clients to automatically detect when they are in a branch office with a local Steelhead. You have decided that the Steelhead Mobile Client should only optimize connections if the Steelhead appliance is more than 10 ms away. What is the name of the feature you need to enable?

A.

Adapter location awareness

B.

Latency licensing awareness

C.

Optimization awareness

D.

Branch office self-awareness

E.

Latency-based location awareness

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Question # 15

The amount of memory required for Steelhead Mobile installation varies between 81 MB to 228 MB. What is the reasons for the variation?

A.

Number of TCP connections

B.

Types of application

C.

Datastore size

D.

Bandwidth

E.

All of the above

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Question # 16

The Steelhead Mobile client on your laptop is showing a status of “Firewalled”. What is the problem?

A.

Port 7800 is being blocked between the Steelhead Mobile Controller and the Steelhead appliance

B.

Port 7810 is being blocked between the Steelhead Mobile client and the Steelhead appliance

C.

Port 7801 is being blocked between the Steelhead Mobile client and the Windows TCP Stack

D.

Port 7850 is being blocked between the Steelhead Mobile Controller and the Steelhead appliance

E.

Port 7801 is being blocked between the Steelhead Mobile Controller and the Steelhead appliance

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Question # 17

What information is available in the System Snapshot files on the Steelhead Mobile Controller?

A.

A copy of all memory

B.

A copy of hardware registers

C.

Status indicators

D.

System configs and tcpdumps

E.

A, B, and C

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Question # 18

The purpose of Intelligent Forwarding is to:

A.

Automatically detect Steelhead appliances in the network

B.

Help prevent network loops

C.

Assist in the creation of static routes on the Interceptor appliance

D.

Preclude the need for proper routing

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Question # 19

What are the possible ways to downgrade a Virtual Steelhead appliance after it has been upgraded?

A.

Remove the upgrade license and restart the virtual Steelhead appliance

B.

Reinstall the original model license

C.

Reduce the amount of CPU and RAM allocated to the Virtual Steelhead appliance and it will automatically downgrade at the next startup

D.

It is not possible to downgrade after an upgrade

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Question # 20

What is the primary purpose of enabling Multiple Interface Support on the Interceptor?

A.

It allows for the ability to support multiple NICs on the Interceptor

B.

It allows the Interceptor appliance to communicate with Steelhead appliances and other Interceptor appliances via more than one In-path interface

C.

It allows the Interceptor appliance to communicate via Multicast to In-path interfaces on the Steelhead appliances

D.

It allows the Interceptor appliance to be managed by In-path interfaces as well as the Primary interface

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Question # 21

The SteelHead Out of Band splice (OOB) uses which addressing mode? Assume a default configuration.

A.

Always correct addressing.

B.

Depends on which addressing mode the first optimized connection uses.

C.

Always transparent addressing.

D.

Always destination transparency.

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Question # 22

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

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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Question # 23

-- Exhibit –

-- Exhibit --

Refer to the exhibit. In a WCCP environment with R3, SH10 and SH11, it was observed that the returning traffic from Server2 is not being optimized by the Steelhead appliances. Why? (Select 2)

A.

The router is not properly configured.

B.

Physical in-path mode should be enabled.

C.

The wccp redirect command is missing.

D.

You should disable logical in-path.

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Question # 24

-- Exhibit –

-- Exhibit --

Refer to the exhibit. According to the packet capture, what statements are true? (Select 2)

A.

This Steelhead appliance is configured with enhanced auto-discovery.

B.

This Steelhead appliance is configured with enhanced peering discovery.

C.

The SYN packet coming from 172.16.12.99 with a destination to 172.16.11.88 carries a probe of 10 bytes.

D.

The SYN packet coming from 172.16.12.99 with a destination to 172.16.11.88 carries a probe of 10 bytes + a 4 bytes notification message.

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Question # 25

-- Exhibit –

-- Exhibit --

Refer to the exhibit. What statements are true? (Select 2)

A.

This connection started on USER1 and is being optimized between SH11 and SH12.

B.

This connection started on USER1 and is being optimized between Steelhead Mobile Client on USER1 and SH11.

C.

This connection started on USER1 and is being optimized between Steelhead Mobile Client on USER1 and SH12.

D.

This connection will show as "passtrough" on SH12.

E.

This connection will not appear on SH12.

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Question # 26

Citrix remote applications, running on the server and to access printers and disk drives, are not performing well. What can you configure to improve the performance?

A.

Enable Citrix CDM optimization.

B.

Enable SecureICA encryption.

C.

Session Reliability (CGP) Port.

D.

Enable Citrix Traffic Fallback Behavior.

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Question # 27

What type of problem does the error message below indicate:

Sep 7 22:53:50 SH pm[18184]: [pm.NOTICE]: Output from sport:

/opt/rbt/bin/sport (pid 27529) received signal 12 (SIGUSR2) marking bit

A.

It is not a problem. The message is displayed when a system dump is generated.

B.

The management process crashed

C.

The optimization process crashed

D.

The management process received permission to apply QoS marking

E.

The sport process received permission to apply QoS marking

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Question # 28

You plan to downgrade a SteelHead from RiOS v9.0.1 (Apr 17 2015) to 8.6.3 (Aug 7 2015). The appliance has not run v8.6.3 previously. Will this be successful?

A.

No, downgrades are only permitted if the target version was previously installed.

B.

No, it is not possible to downgrade RiOS.

C.

Yes, the configuration will be migrated successfully during any downgrade.

D.

Yes, v8.6.3 is a chronologically newer version.

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Question # 29

A SteelHead is deployed in a VLAN bridge. Which VLAN ID should be configured on the in-path interface to support this environment?

A.

1

B.

100

C.

200

D.

No configuration is necessary as LAN and WAN interfaces are on access ports

E.

It will require an in-path interface for each VLAN

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Question # 30

Consider a SteelHead deployment with SMB optimization and SMB signing enabled on all SteelHeads. The client is configured to have signing enabled and the server has signing disabled. What will happen to SMB connections between these two hosts?

A.

The connection will be unsigned but allowed. The SteelHead does not need to have SMB signing enabled to accommodate this connection.

B.

The connection will not be allowed, as signing is enabled on the client and disabled on the server.

C.

The connection will be allowed and will be signed as the client determines whether SMB signing is used or not.

D.

The connection will be allowed, and will be signed between the client and client-side SteelHead.

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Question # 31

What type of problem does the error message below indicate:

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

A.

It is not a problem, but part of the regular operation

B.

The management process crashed

C.

The optimization process crashed

D.

The management process received permission to connect to a Granite Core device

E.

The sport process received permission to connect to a Granite Core device

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Question # 32

What is the purpose of ‘Peer Affinity’ on the Interceptor?

A.

To keep similarly sized SteelHead models peering with each other.

B.

To ensure load is distributed evenly throughout the cluster.

C.

To maximize the benefits of SDR by maintaining SteelHead peering relationships.

D.

To ensure asymmetrically routed connections are optimized.

E.

To make sure cluster SteelHeads remain connected to the same Interceptor.

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Question # 33

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?

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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Question # 34

At the data center, two SteelHeads are deployed in parallel, configured with connection forwarding. They are both actively optimizing connections via inpath0_0 and the customer requires that optimization continues in the event of an appliance failure. Which features should be configured to provide the customer with optimization if an appliance fails? (Choose two.)

A.

no interface inpath0_0 fail-to-bypass enable

B.

interface inpath0_0 fail-to-bypass enable w-failure

C.

No in-path neighbor allow-failure

D.

In-path neighbor allow-failure

E.

no asymmetric-route-detect enable

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Question # 35

You wish to utilize a SteelHead to fill a high bandwidth, high latency WAN link without data reduction. The link is 622mbps and 500ms latency. What steps should you take to fill the pipe?

A.

Enable HSTCP, configure the WAN buffers and enable SDR/LZ.

B.

Enable HSTCP, configure the WAN buffers and disable SDR/LZ.

C.

Max-TCP and HS-TCP are only for optimized flows, so data reduction cannot be disabled but will fill the pipe anyway.

D.

Enable MXTCP, configure the WAN buffers and disable SDR/LZ.

E.

Enable MXTCP, configure the WAN buffers and enable SDR/LZ.

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Question # 36

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)

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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Question # 37

The exhibit shows a data center side serial clustering deployment. In this organization, not every remote site has a Steelhead appliance deployed, and all remote locations will be connecting to the data center.

For connections initiated from the data center, there is a possibility that the Steelhead appliances shown in the exhibit will end up peering with each other, rather than the intended remote Steelhead appliances. Where are peering rules needed to prevent this problem?

A.

A only

B.

B only

C.

B and C

D.

A and B

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Question # 38

Which of the following configuration policies are supported on the CMC appliance? (Select 4)

A.

Security Policy

B.

Optimization Policy

C.

System Setting Policy

D.

License Policy

E.

Networking Policy

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Question # 39

What Steelhead appliance models support the installation of Microsoft Windows Server 2008 R2 package on the RSP? (Select 2)

A.

1050

B.

250

C.

550

D.

3020

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Question # 40

What is visible on the CMC appliance home page dashboard? (Select 4)

A.

CMC appliance model

B.

CMC appliance version

C.

Logout

D.

Reset

E.

User Logged in

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Question # 41

When upgrading a Steelhead appliance from the CMC appliance what methodologies can be used? (Select 2)

A.

Upgrade from uploaded image

B.

Upgrade from the CMC appliance flash

C.

Automatic download from support.riverbed.com

D.

Upgrade from URL

E.

Upgrade from TFTP server

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Question # 42

Which are true about the Steelhead appliance backups taken and stored by the CMC appliance? (Select 3)

A.

They are text file snapshots of the current running configuration taken at 3 a.m. (by default)

B.

The CMC appliance creates hyperlinks of the backups for easy viewing with a Web browser

C.

The configurations can be copied from the CMC appliance back to the Steelhead appliance via SCP

D.

There is a limit of five configurations per Steelhead appliance that can be stored at any one time in a rolling queue

E.

The Steelhead configuration files can be edited on the CMC appliance

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Question # 43

In a server-side out-of-path deployment, the server-side Steelhead appliance connects to the network via which physical interface:

A.

LAN0_0

B.

Primary

C.

Auxiliary

D.

WAN0_0

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Question # 44

Refer to the exhibit.

A connection times out when Client41 and Client42 attempt to either establish an HTTP session to Server31 or an FTP connection to Server32 after not connecting to them for some time. The very next attempt to connect to these services done immediately after the failure seems to work correctly. The clients are able to ping both servers and no access-lists are configured on the routers. SH3 uses the IP address of R3f0 as its default gateway. Upon powering off SH3 and SH4, the problem goes away even for first connection and everything works normally (even after not connecting for extended periods of time). Which of the following are likely to correct this problem?

A.

Both servers have faulty network interface cards and should be replaced

B.

Both the HTTP service running in Server31 and the FTP service running in Server32 are down and should be restarted

C.

A more specific static route pointing to Subnet 31 is not configured at SH3

D.

A more specific static route pointing to Subnet 31 is not configured at R3

E.

A more specific static route pointing to Subnet 31 is not configured at L3 Switch

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Question # 45

Your Steelhead appliance deployment includes users accessing the Internet from branch offices with the traffic being back-hauled to the data center before going out to the Internet. However, HTTP latency optimization does not appear to be very effective, and in certain cases, is slower than without optimization. What settings might help with this Internet-bound traffic?

A.

Riverbed recommends you turn off URL Learning and Parse-and-Prefetch and only enable OPT

B.

Riverbed recommends you enable URL Learning and Parse-and-Prefetch and turn off OPT

C.

Riverbed recommends you turn off URL Learning and only enable Parse-and-Prefetch and OPT

D.

Riverbed recommends you turn off URL Learning, Parse-and-Prefetch, and OPT

E.

Riverbed recommends you enable URL Learning, Parse-and-Prefetch, and OPT

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Question # 46

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

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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Question # 47

Which of the following is NOT supported in Alarm Settings?

A.

Raise alarm when network interface duplex errors are detected

B.

Raise alarm when network interface link errors are detected

C.

Raise alarm when the number of optimized connections exceeds user specified limit

D.

Raise alarm if a software version mismatch is detected in the network

E.

Raise alarm when asymmetric routes are detected

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Question # 48

What steps take place during an upgrade process?

A.

The new software image will be loaded into the Backup partition; a reboot will be necessary to have the Steelhead appliance switch to the newer software

B.

The new software image will be loaded into the Booted partition; a reboot will be necessary to have the Steelhead appliance switch to the newer software

C.

The new software image will be loaded into the Backup partition; a restart will be necessary to have the Steelhead appliance switch to the newer software

D.

The new software image will be loaded into the Booted partition; a restart will be necessary to have the Steelhead appliance switch to the newer software

E.

The new software image will be loaded into the Backup partition; a configuration save will be necessary to have the Steelhead appliance switch to the newer software

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Question # 49

Which of the following points on WCCP v2 are correct? (Select 4)

A.

Intercept on outbound interface only

B.

Multicast support

C.

Able to redirect any TCP/UDP traffic

D.

Uses UDP port 2048 for control messages

E.

Multi-router support

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Question # 50

Connection pooling feature on RiOS pre-establishes:

A.

25 inner channel connections between each pair of Steelhead appliances.

B.

20 inner channel connections between data center and branch Steelhead appliances.

C.

20 inner channel connections between each pair of Steelhead appliances.

D.

15 inner channel connections between each pair of Steelhead appliances.

E.

20 outer channel connections between server and server-side Steelhead appliances.

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Question # 51

What is the primary purpose of Connection Forwarding in WCCP deployments with multiple Steelhead appliances in a single cluster? (Select 2)

A.

For handling Removal Query process

B.

For handling Redirect Assignment process

C.

For handling Here-I-Am packets process

D.

For handling the I-See-U packets process

E.

Connection Forwarding is not recommend in WCCP deployments

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Question # 52

When two or more Steelhead appliances are configured with Connection Forwarding in such environments as WCCP clustering, what feature will allow remaining Steelhead appliances to continue to provide optimization for new connections when one unit fails?

A.

In-Path Neighbor FailurE. Allow

B.

WCCP neighbor active

C.

Minimum cluster count set to 1

D.

Maximum cluster count set to 2

E.

This cannot be done on Steelhead appliances

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Question # 53

To prevent possible denial of service attack, such as TCP SYN flooding, which of the following features could be used?

A.

No TCP SYN Flooding

B.

Connection limit per source IP

C.

Limit UDP traffic

D.

Run Deep Packet Inspection on all traffic

E.

Run Deep Packet Inspection on TCP traffic only

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Question # 54

When using Correct Addressing, what is the out-of-band (OOB) splice connection described as?

A.

A virtual connection contained within one of the inner-connections which corresponds to a client-server connection

B.

A separate connection between the Primary IP addresses of the client and server Steelhead appliances

C.

A separate inner-connection between two Steelhead appliances not directly related to any one of the user inner connections

D.

No such construct exists

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Question # 55

You are configuring HighSpeed TCP in an environment with an OC-3 (155Mb/s) and 60 milliseconds of round-trip latency. You know that the rule of thumb is to set the Steelhead appliance's WAN Default Send Buffer Size and WAN Default Receive Buffer Size to 2*BDP for the link. The buffer size setting for this link would be closest to: (Hint: Use the calculator)

A.

4,665,000 bytes

B.

9,330,000 bytes

C.

3,110 bytes

D.

6,220 bytes

E.

2,325,000 bytes

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Question # 56

When deploying failover Interceptors, all in-path interfaces must:

A.

be deployed on different physical links.

B.

be deployed on 802.1Q trunks.

C.

be deployed on all the same physical links.

D.

be deployed separately.

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Question # 57

Which of the following methods can be used to reduce the load on a router configured to use outbound interface WCCP redirection? (Select 3)

A.

Using inbound interface redirection instead

B.

Use fixed-target rules and remove WCCP on the WAN facing interfaces

C.

Use Redirect lists to control what traffic gets redirected

D.

Use the router command “load interval 30” to restrict WCCP to use 30% of the CPU

E.

Use Event Element Manager (EEM) to load balance between a clustered Steelhead appliance deployment

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Question # 58

The IP address for which neighbor interface should be configured for Connection Forwarding?

1) lan0_0

2) inpath0_0

3) Primary

4) AUX

5) inpath7_7

A.

1

B.

2

C.

1, 5

D.

2, 3, 4, 5

E.

1, 2, 3, 4, 5

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Question # 59

Which of the following interfaces should be used for datastore synchronization? (Select 2)

A.

inpath0_0

B.

inpath0_1

C.

Primary

D.

AUX

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Question # 60

-- 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)

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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