Riverbed Riverbed Certifications 199-01 Questions & Answers

• Question 211:

  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

  Correct Answer: C

• Question 212:

  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 passthrough 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?

  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

  Correct Answer: B

• Question 213:

  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?

  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

  Correct Answer: C

• Question 214:

  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?

  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

  Correct Answer: B

• Question 215:

  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?

  A. Duplex mismatch

  B. Bilateral Opportunistic Lock failure

  C. Policy-based routing incorrectly configured

  D. Reversed WAN and LAN cabling

  Correct Answer: D

• Question 216:

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

  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

  Correct Answer: AB

• Question 217:

  What should you do when you receive the following message?

  

  A. Nothing. This is a warning message which means that the Steelhead appliance is resetting an internal state regarding this connection and it should not affect user performance.

  B. Switch off the Steelhead appliance

  C. Create a specific pass-through rule to bypass the above source and destination hosts

  D. Reload the Steelhead appliance

  Correct Answer: A

• Question 218:

  What should you do when you receive the following message?

  [intercept.NOTICE] sending kickoff RST: 10.35.178.41:1169 -> 10.110.141.30:1031.

  A. Nothing. This is just a notice message.

  B. Verify whether the "Reset Existing Client Connections on Start Up" option is checked and uncheck it

  C. Switch off the Steelhead appliance

  D. Create a specific pass-through rule to bypass the above source and destination hosts

  E. Restart the Steelhead appliance

  Correct Answer: B

• Question 219:

  You need to perform a tcpdump of traffic entering the Steelhead appliance's lan0_0 interface. Which of the following demonstrate the proper command format to perform the tcpdump and capture to a file?

  A. tcpdump –p lan0_0 –S 300 –w lancap.cap

  B. tcpdump –i lan0_0 –s 300 –w lancap.cap

  C. tcpdump –i lan0_0

  D. tcpdump –I lan0_0 –s 300

  E. tcpdump –i lan0_0 -3 300 –r lancap.cap

  Correct Answer: B

• Question 220:

  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)

  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

  Correct Answer: AB