Riverbed Riverbed Certifications 830-01 Questions & Answers

• Question 341:

  Which statements are true regarding the default methods by which load-balancing takes place in the Interceptor appliance. (Select 2)

  A. The Interceptor appliance uses round robin, for each TCP connection, regardless of source or destination IP address, and is equally load-balanced between a group of Steelhead appliances

  B. The Interceptor appliance uses round robin, for each TCP connection, depending on source IP address, and is equally load-balanced between a group of Steelhead appliances

  C. The Interceptor appliance uses hash assignment, for each TCP connection depending the hash value calculated from source and destination IP address, and is directed to a particular Steelhead appliance in the local cluster

  D. The Interceptor appliance can dynamically determine and direct traffic for optimization to the least-loaded Steelhead appliances based on Steelhead appliance resource usage

  E. The Interceptor appliance uses peer affinity, a Steelhead appliance in the local cluster that has been previously paired with a destination IP address is preferred

  F. The Interceptor appliance uses peer affinity, a Steelhead appliance in the local cluster that has been previously paired with a remote Steelhead appliance is preferred

  Correct Answer: DF

• Question 342:

  The primary data center Interceptor is configured to fail-to-block. What best describes the result of stopping the Interceptor appliance service?

  A. All traffic passes through the Interceptor appliance

  B. The Interceptor allows UDP traffic to pass-through, but blocks all TCP traffic

  C. Previously optimized connections continue to be redirected, but new TCP connections are passed through

  D. All traffic through the Interceptor will be blocked

  E. The Interceptor appliance communicates to the Steelhead appliances to disable their optimization service

  Correct Answer: D

• Question 343:

  In a quad Interceptor appliance deployment the directly connected pairs are configured in failover mode: IC-A and IC-B are failover buddies IC-C and IC-D are failover buddies To prevent asymmetric routing IC-A should be configured to have a neighbor relationship with which of the following peer Interceptors? (Select 2)

  A. IC-B

  B. IC-C

  C. IC-D

  D. Interceptor appliance uses auto discovery to learn about each other

  E. Neighbor relationships are unnecessary in a quad Interceptor appliance deployment

  Correct Answer: BC

• Question 344:

  A customer would like to deploy the Interceptor appliance on four aggregated 100 Mbps links which use LACP to bundle the physical links into a single logical link. Which of the following is true? (Select 2)

  A. LACP is not supported with the Interceptor appliance

  B. The command "in-path multi-interface enable" must be configured

  C. The same IP address must be configured on each of the four in-path interfaces

  D. Each In-path interface should have its own unique IP address.

  E. The command "no arp filter response" should be enabled.

  Correct Answer: DE

• Question 345:

  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:

  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

  Correct Answer: C

• Question 346:

  A customer's network consists of a data center with an Interceptor appliance and a Steelhead appliance cluster and several remote sites each with Steelhead appliances. You would like to pass-through an application unoptimized due to a suspected problem and are provided the following information: The application uses a static TCP port, 15000. The application is initiated from the remote site machines. The same servers which host the application host several other applications as well. Based on the information provided which option will allow the application to pass-through:

  A. Configure in-path rules on the Interceptor appliance to pass-through destination TCP port 15000

  B. Configure in-path rules on the data center Steelhead appliances to pass-through the server IP addresses

  C. Configure a peering rule on the Interceptor appliance to pass-through destination TCP port 15000

  D. Configure a load-balancing rule on the Interceptor appliance to pass-through destination TCP port 15000

  E. Stop the Interceptor appliance service

  Correct Answer: D

• Question 347:

  Is any user data sent across the out-of-band (OOB) connection of a Steelhead appliance?

  A. No data is sent across this connection

  B. Yes, only after 60 seconds

  C. Yes, when the peer Steelhead appliance requests information

  D. Yes, when the connection is setup

  E. Yes, every 30 seconds

  F. Yes, every 30 minutes

  Correct Answer: A

• Question 348:

  Company X has many offshore oil rigs they want to bring optimization to. The only available connection is through a satellite that has frequent bursts of packet loss. There are very few users per rig and HTTPS-based SharePoint performance is so poor they often time out pulling down even a small file. CIFS often does not work at all. They are considering the Steelhead Mobile solution to solve this problem. You suggest they deploy a Steelhead in-path at the data center and:

  A. Steelhead Mobile with FEC turned on to help with lossy links

  B. Steelhead Mobile with HS-TCP configuration

  C. Steelhead Mobile running MX-TCP to deal with the loss

  D. Deploy Steelhead appliances with MX-TCP to deal with the loss

  E. Deploy Steelhead appliances with HS-TCP, Window Scaling, fixed-target rules, and TCP New Reno to overcome the loss

  Correct Answer: D

• Question 349:

  Refer to the exhibit.

  

  If Steelhead Mobile Client B offers up a share on the network, what is needed on Steelhead Mobile Client R to open an optimized connection to this share if enhanced auto-discovery is enabled on all Steelhead appliances?

  A. Default auto-discovery will work fine without modification

  B. The connection to Client B cannot be optimized because the Steelhead Mobile Controller cannot optimize incoming connections

  C. A fixed-target rule to Client B's IP address is needed in order for optimization to occur on Mobile Client B

  D. The addition of a peering rule

  Correct Answer: A

• Question 350:

  Refer to the exhibit.

  

  What configuration option is most relevant on Steelhead A to enable Steelhead Mobile Client R to set up the most efficient optimized connection to Server B?

  A. Enhanced auto-discovery

  B. Simplified Routing

  C. no in-path peering manual enable

  D. in-path rule pass rulenum start

  E. in-path peering rule pass rulenum 1

  Correct Answer: A