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Riverbed 830-01 Dumps

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Total 402 questions

RCPE Certified Professional WAN Optimization Questions and Answers

Question 1

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?

Options:

A.

A only

B.

B only

C.

B and C

D.

A and B

Question 2

Refer to the exhibit.

In the accompanying exhibit, SH3 and SH4 are able to optimize FTP and HTTP sessions between Client41 and the respective application hosts Server31 and Server32. However, optimization does not happen for Client42 and these application hosts. A quick check on SH3 and SH4 registers neither optimized nor pass-through traffic from Client42. Client42 is able to ping Client41 and the in-path address of SH4. Note that SH3 and SH4 are in auto-discovery mode. What is the likely cause?

Options:

A.

The default gateway of Client41 is configured wrong

B.

The default gateway of Client42 is configured wrong

C.

The default gateway of SH3 is configured wrong

D.

The default gateway of SH4 is configured wrong

E.

The routing protocol between R3 and R4 is configured wrong

Question 3

In a recent in-path deployment, users are complaining that some of their CIFS drive-mapping connections do not appear to be optimized. Upon further analysis, you discover the file shares reside on a domain controller. The Steelhead appliances are deployed in a default configuration. Which of the following is the most likely cause of the problem?

Options:

A.

The Steelhead appliance lost an Opportunistic Lock on the file

B.

SMB Signing is set to required

C.

No fixed-target rules installed

D.

Misconfigured Steelhead appliance

E.

Packet ricochet

Question 4

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

Question 5

Which of the following are examples of Networking policies on the CMC appliance? (Select 3)

Options:

A.

WCCP

B.

HighSpeed TCP

C.

Routing

D.

Port Labels

E.

HTTP Protocol

Question 6

What command should you use to see the direct URL of a package?

Options:

A.

show rsp slots

B.

show rsp modules

C.

show rsp platform

D.

show rsp packages

E.

show rsp vms

Question 7

Refer to the exhibit.

SH3 and SH4 are able to optimize FTP and HTTP sessions between Client41 and the respective application hosts Server31 and Server32. However, optimization seems to be a problem for Client42 and these application hosts. A quick check on SH3 and SH4 registers neither optimized nor pass-through traffic from Client42. Client42 is able to ping to both Server31 and Server32. Note that SH3 and SH4 are in auto-discovery mode. What is the likely cause?

Options:

A.

The default gateway of Client41 is configured wrong

B.

The default gateway of Client42 is configured wrong

C.

An outbound access-list specified at R3f0 denies TCP traffic from Client42

D.

The routing protocol between R3 and R4 is configured wrong

Question 8

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

Options:

A.

CMC appliance model

B.

CMC appliance version

C.

Logout

D.

Reset

E.

User Logged in

Question 9

Which of the following is true about fetching Steelhead appliance's configurations from a CMC appliance?

Options:

A.

Fetched configurations are automatically saved as groups, which can be managed and applied to appliances and appliance policies

B.

Configurations cannot be fetched from the CMC appliance, they must be pushed

C.

Fetched configurations are automatically saved as policies, which can be managed and applied to appliances and appliance groups

D.

Fetched configurations are saved as system settings, which can be managed and applied to appliances and appliance groups

Question 10

Which of the following is true regarding the CMC appliance?

Options:

A.

Can be configured using its default IP address of 192.168.1.1

B.

Can be initially set up via the CLI

C.

Can be initially setup via the AUX interface

D.

Can be initially set up via telnet

E.

Both C and D

Question 11

Which two of the following attributes are required to be added to a TACACS+ server to enable monitor and admin logon access to the CMC appliance via TACACS: (Select 2)

Options:

A.

service = rbt-exec {local-user-name = "monitor"}

B.

service = wan-accel {local-user-name = "monitor"}

C.

service = rbt-exec {local-user-name = "admin"}

D.

service = wan-accel {local-user-name = "admin"}

E.

service = rbt-exec {local-user-name = "su"}

Question 12

When troubleshooting a datastore wrapping alarm with 1 day wrapping notification configured, which of the following should be examined? (Select 2)

Options:

A.

If the unit was mis-sized

B.

If stream based encrypted traffic is being sent across the link as optimized

C.

If your fixed-target rules are pointing to the correct Steelhead appliance

D.

If Connection Forwarding was properly configured

Question 13

Refer to the exhibit.

Traffic going from Corp-A-DC-2 towards Corp-B will always use Link-1. Traffic from Corp-B back to Corp-A-DC-1 may traverse Corp-A-DC-1, over the GigaMAN before it reaches Corp-A-DC-2. No TCP connections are initiated from Corp-B to either Corp-A-DC-1 or Corp-A-DC-2. Unfortunately, the customer does not have any money to purchase any additional Steelheads. What are some possible fixes to ensure optimization occurs while Link-1 is operational? (If Link-1 ceases to function, optimization is not possible.) (Select 2)

Options:

A.

Configure a fixed-target rule on the Corp-A-DC-2 Steelhead pointing to the Corp-B Steelhead on port 7800

B.

On the Corp-B Steelhead, enable “in-path probe direct”

C.

On the Corp-A-DC-2 Steelhead, enable “in-path probe direct”

D.

Configure the Corp-A-DC-2 Steelhead to inject a route into the network

E.

Enable Full Transparency

Question 14

Refer to the exhibit.

A customer is reporting that the first connection from a user to the server is failing. However, subsequent connections work properly and are optimized. How can this problem best be resolved?

Options:

A.

Fixed-target rule

B.

Enable RIP/OSPF on the routers

C.

Enable Simplified Routing

D.

Enable QoS

E.

Enable RIP/OSPF on the Steelhead appliances

Question 15

You need to take a full packet trace from the WAN interface of a Steelhead appliance to send into technical support. Which of the following commands will achieve this assuming typical Ethernet MTU? (Select 2)

Options:

A.

tcpdump –i wan0_0 –s 0 –w filename

B.

tcpdump –i wan0_0 –s 1500 –w filename

C.

tcpdump –I wan0_0 –w filename

D.

tcpdump –i wan0_0 –w filename

E.

tcpdump –I wan0_0 –s 1500 –w filename

Question 16

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

Options:

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

Question 17

It is not recommended to use the same Steelhead appliance to optimize both replication traffic and general user traffic because:

Options:

A.

Replication traffic uses 16 KB blocks and causes fragmentation in the datastore

B.

User traffic may contain sensitive traffic and should not be mixed with other traffic

C.

Replication traffic may cause admission control therefore affecting user traffic

D.

The traffic pattern between the two types of traffic is generally very different and therefore the datastore may wrap more quickly affecting performance

Question 18

The Group ID (GID) links which two policies? (Select 2)

Options:

A.

Optimization

B.

Acceleration

C.

Installation

D.

Endpoint

E.

Assignment

Question 19

The client-side Steelhead appliance has been configured for OOB Destination Transparency, what should the source IP/port be for the OOB connection?

Options:

A.

Client IP/random port

B.

Client-side Steelhead appliance in-path IP/random port

C.

Client IP/port 708

D.

Client-side Steelhead appliance in-path IP/port 708

E.

None of the above

Question 20

Which of the following is Endpoint alarm?

Options:

A.

Locked secure vault

B.

Firewalled status

C.

Network interface error

D.

Temperature

E.

Memory paging

Question 21

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

Options:

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

Question 22

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

Question 23

A firewall at a remote site on the WAN side of Steelhead appliance (A) is stripping out the 76 and 78 values in the TCP options field. Steelhead appliance (B) is in the local cluster of appliances communicating with an Interceptor appliance. The desired result is for optimization to continue between Steelhead appliance (A) and Steelhead appliance (B) for all traffic originating from the remote site. A suggestion is made to use fixed target rule(s) to meet this objective. Based on the information provided select the best answer from the choices below:

Options:

A.

On Steelhead appliance (A) configure a fixed-target rule to the Interceptor in-path address

B.

On Steelhead appliance (A) configure a fixed target rule to the Interceptor in-path address with Steelhead appliance (B) as the backup target.

C.

On Steelhead appliance (A) configure a fixed target rule to the Steelhead appliance (B) in-path address

D.

Fixed target rules will not work with Steelhead appliances virtually out of path and communicating with Interceptors

E.

TCP option 76 or 78 are not relevant when an Interceptor appliance is used, Peer Affinity will automatically achieve this objective

Question 24

What information does the OVA package include about the Virtual Steelhead appliance? (Select 4)

Options:

A.

Virtual disks

B.

CPU

C.

Memory

D.

License

E.

Storage

Question 25

When upgrading a Virtual Steelhead appliance, what steps can be taken to preserve the existing datastore?

Options:

A.

When upgrading a Virtual Steelhead appliance, it is not possible to preserve the existing datastore

B.

Detach the existing datastore and re-attach to the new Virtual Steelhead appliance

C.

Run vMotion and move the datastore to a different ESX host before performing the upgrade and then bring it back afterwards

D.

Move the existing datastore to an NFS share and move it back after the upgrade

Question 26

What is the default In-path rule on an Interceptor appliance?

Options:

A.

Optimize All

B.

Pass-through All

C.

Auto All

D.

Redirect All

Question 27

For a new connection, a Load Balancing rule matches but none of the target Steelhead appliances in the rule are available. What will happen to the new connection?

Options:

A.

The connection is passed through

B.

The next rule in the list is examined

C.

The Interceptor appliance triggers an alarm

D.

The Interceptor appliance discontinues redirecting any new connections and places this rule in admissions control

Question 28

A data center location has three Steelhead appliances and one Interceptor appliance clustered together. If Steelheads A and B are unable to handle the new web traffic on port 80, the administrator does not want the connection to be serviced by Steelhead C. Given the current rules, we want to prevent traffic from redirecting to Steelhead C.

Current Rules:

Rule 1: Redirect rule for ports 445, 139, 80, target SH A

Rule 2: Redirect rule for ports 8080, 80, target SH B

Auto (default rule)

Which rule should be added on the Interceptor to achieve desired functionality?

Options:

A.

A new rule 1 for ports 80 for Steelhead A and B

B.

New rule 3: Pass-through rule for port 80

C.

Rule 3: Redirect for port 80 to Steelhead C

D.

No new rule needed for the administrator's policy

E.

New rule 1: Pass-through rule for port 80

Question 29

What deployment type supports fail-to-wire?

Options:

A.

Physical in-path

B.

Virtual in-path

C.

Out-of-path

D.

Virtual Steelhead appliance

E.

Proxy file server

Question 30

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

Question 31

After installing a Steelhead appliance at a remote site, users started complaining about some optimized applications being slower. After some initial investigating, you discovered a backup job was consuming most of the bandwidth causing congestion. You also found that QoS is configured on the router and should have prevented this but it did not. What is the most likely cause?

Options:

A.

Simplified routing is not enable on the remote Steelhead appliance.

B.

Simplified routing is not enable on the data center Steelhead appliance.

C.

Asymmetric routing.

D.

QoS on the router identifies traffic using destination IP and ports while the Steelheads are configured to use correct addressing.

E.

QoS on the router identifies traffic using destination IP and ports while the Steelheads are configured to use full transparency.

Question 32

SteelHead SaaS can provide telemetry. What kind of integration with SteelCentral is possible? (Choose two.)

Options:

A.

SNMP v1, v2c and v3

B.

Netflow

C.

SteelFlow

D.

SNMP v1 monitoring

Question 33

What type of problem does the error message below indicate:

Sep 13 03:50:51 SH alarmd[18371]: [alarmd.NOTICE]: Alarm 'admission_mem' triggering

Sep 13 03:50:51 SH alarmd[18371]: [alarmd.NOTICE]: Alarm 'admission_control' triggering

Sep 13 03:50:51 SH alarmd[18371]: [alarmd.NOTICE]: Alarm 'health' severity changed to 'Admission Control'

Options:

A.

High CPU Utilization

B.

Paging alarm

C.

Admission control on connections

D.

Admission control on memory

E.

Admission control on system

Question 34

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.

Question 35

-- Exhibit –

-- Exhibit --

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

Options:

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.

Question 36

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

Options:

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

Question 37

Branch office users live streaming video URL fragment requests are not optimized even though Microsoft Silverlight stream splitting is enabled. What could be the causing this? (Select 3)

Options:

A.

The client-side Steelhead appliance optimization service wasn't restarted.

B.

HTTP optimization is disabled on the client-side Steelhead appliance.

C.

The server-side Steelhead appliance optimization service wasn't restarted.

D.

HTTP optimization is disabled on the server-side Steelhead appliance.

Question 38

The SteelHead REST API connectivity can be used for which of the following?

Options:

A.

To synchronize layer 7 signatures and QoS configurations with the NetProfiler.

B.

To export QoS and other statistics to the SteelCentral Controller for SteelHead (SCC).

C.

To push secure transport configuration from the SCC to the SteelHeads NetProfiler.

D.

To push topology information to the SteelHeads from the SCC for path selection.

E.

To synchronize layer 7 signatures with the NetShark devices.

Question 39

Which is the default value for latency-based location awareness in a SteelHead Mobile policy?

Options:

A.

5 ms

B.

10 ms

C.

15 ms

D.

20 ms

Question 40

-- Exhibit –

-- Exhibit --

Refer to the exhibit. When USER1 tried to map shares to Server 1 and Server 2, he got the results shown. What does the report represent? (Select 2)

Options:

A.

The connection to Server 2 is optimized. The performance should be good.

B.

The connection to Server 2 is optimized, with errors, the performance should be poor.

C.

The connection to Server 1 is optimized. The performance should be good.

D.

The connection to Server 1 is optimized, with errors, the performance should be poor.

E.

The connection to Server 1 is not being optimized.

Question 41

Examine the diagram below. The customer needs to optimize data center servers and also servers within the DMZ but wants to keep the SteelHead behind the firewall. Which optimization mode would support this environment?

Options:

A.

Hybrid mode

B.

Virtual In-path mode

C.

WCCP or Interceptor mode

D.

Out-of-path mode

E.

In-path mode

Question 42

On Steelheads, by default tcpdump:

Options:

A.

captures packets with an 802.1Q tag.

B.

does not capture packets with an 802.1Q tag

C.

does not capture packets with an 803.3Q tag.

D.

does not capture packets with an 802.11Q tag.

Question 43

MAPI optimization configuration should be applied.

Options:

A.

All SteelHeads except those configured for failover.

B.

On both the client-side and server-side SteelHeads.

C.

All SteelHeads except those configured for failover and data store sync.

D.

On the server-side SteelHead

E.

On the client-side SteelHead

Question 44

The picture below corresponds to a connection using the SteelHead SaaS GeoDNS feature. What is the IP address of the closest Microsoft Exchange Client Access Server (CAS)?

Options:

A.

132.245.24.82

B.

172.16.38.222

C.

Not enough information. You would need the output of show service cloud geodns

D.

132.245.92.226

Question 45

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

Question 46

A server-side logical in-path deployment is shown in the exhibit. Additionally, SH12 is configured with a fixed-target rule pointing to SH11. The client behind SH12 will not be able to establish a connection to SERVER1 as a logical loop will occur when the number of optimized connections in SH11 has reached the maximum system limit.

What is the best way to resolve this issue?

Options:

A.

Use the largest Steelhead appliance model

B.

Enter the “in-path loopguard enable” command

C.

Use more than one Steelhead appliance

D.

Limit the number of TCP connections to be optimized

E.

Put SERVER1 in a different subnet from SH11

Question 47

WCCP uses bits to create and distribute buckets. Using HASH assignment, what are the maximum number of bits used?

Options:

A.

4

B.

7

C.

8

D.

32

E.

256

Question 48

In an implementation using a 4-port card, which interface could be used as the Connection Forwarding neighbor? (Select 2)

Options:

A.

Primary

B.

AUX

C.

inpath0_0

D.

inpath0_1

Question 49

What is the supported redirection scheme/s used when a Steelhead appliance is in a WCCP deployment?

Options:

A.

GRE

B.

L2

C.

None

D.

Either GRE or L2

Question 50

When using Correct Addressing and enhanced auto-discovery (EAD), what is the size of the probe response in the return SYN/ACK packet from the server?

Options:

A.

4 bytes

B.

10 bytes

C.

14 bytes

D.

18 bytes

E.

32 bytes

Question 51

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

Options:

A.

inpath0_0

B.

inpath0_1

C.

Primary

D.

AUX

Question 52

Which of the following statements are true about server-side out-of-path deployments? (Select 4)

Options:

A.

They require no routing changes

B.

They require the use of WCCP or PBR for traffic redirection

C.

They hide the original client IP address from the server

D.

They require the use of a fixed-target rule on the client-side Steelhead appliance

E.

They require the use of either physical in-path or virtual in-path on the client-side Steelhead appliance

Question 53

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

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

Question 54

A customer wants to mark the IP precedence value for a passive FTP data connection as flash (flash = CS3). Which of the following are true? (Hint: Use the calculator)

Options:

A.

Specify qos dscp rule at client-side Steelhead appliance with a dest-port of 20 and with a DSCP value of 23

B.

Specify qos dscp rule at client-side Steelhead appliance with a dest-port of 20 and with a DSCP value of 24

C.

Specify qos dscp rule at server-side Steelhead appliance with a dest-port of 20 and with a DSCP value of 26

D.

Specify qos dscp rule at client-side Steelhead appliance with a dest-port of 20 and with a DSCP value of 26

E.

Specify qos dscp rule at server-side Steelhead appliance with a dest-port of 20 and with a DSCP value of 24

Question 55

Connection pooling feature on RiOS pre-establishes:

Options:

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.

Question 56

In the exhibit,

where should the WCCP redirection take place for traffic originating from the clients to the servers, assuming redirect IN is used?

Options:

A.

A

B.

B

C.

C

D.

D

E.

E

Question 57

VSP on the Steelhead EX supports which features of VMware virtual machines? (Select 3)

Options:

A.

vSphere Fault Tolerance

B.

Reporting.

C.

Stopping, starting, and restarting virtual machines through vSphere.

D.

vSphere High Availability

E.

vSphere vMotion.

F.

Virtual machine configuration through vSphere.

Question 58

In a Steelhead deployment, the customer decides to use Full Transparency and block all incoming/outgoing TCP connections on port 7800 on their firewall. However, they are finding all TCP connections are passing through the Steelheads (even ones that should be optimized via the in-path rule set).

If Full Transparency uses the original IP addresses and TCP ports for inner connections, what is needed to fix the problem?

Options:

A.

“no in-path enable”; since we don't really need in-path in this case

B.

“destination oobtransparency”; since the OOB (out-of-band) splice needs transparency also

C.

“inner connection max 50”; since the default inner connection pool count of 20 is insufficient

D.

No command needed, the connections are really optimized even though we report connections are passed through

Question 59

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

Question 60

In the exhibit,

which interfaces should the WCCP router R1 listen to for multicast communication with the server-side Steelhead appliances, assuming the multicast address is 239.0.0.1? (Select 2)

Options:

A.

A

B.

B

C.

C

D.

D

E.

E

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Total 402 questions