Riverbed Riverbed Certifications 499-01 Questions & Answers

• Question 121:

  Which of the following is not correct regarding packet deduplication in AppResponse Xpert (ARX)?

  A. ARX compares 40 bytes of the IP header (minus the ToS, TTL, and Checksum fields) and TCP header for each packet. It calls it a duplicate if those headers are identical across two packets received inside of the deduplication packet buffer or time window.

  B. ARX associates the TCP segment seen first with the corresponding VLAN ID. AppResponse Xpert then ignores all other identical TCP segments that arrive (in its deduplication time window or buffer) encapsulated in other VLANs.

  C. If two identical TCP segments arrive encapsulated in identical VLAN IDs, then only the last one is kept and used for analysis; the first are discarded.

  D. If two identical TCP segments arrive and only one of them is encapsulated in the 802.1q VLAN header, then VLAN-based deduplication will associate a fake VLAN ID of -1 with the non-802.1q segment and the TCP segment that is seen first in the current deduplication window is considered the original packet. Identical TCP segments with other VLAN IDs are ignored.

  Correct Answer: C

• Question 122:

  How many IP addresses are required to set up an AppResponse Xpert appliance?

  A. 4

  B. 3

  C. 2

  D. 1

  Correct Answer: D

• Question 123:

  Highlighting the top 10 listed IP addresses in an IP table and then clicking the "Multi-Group Metric Time Series Chart" icon in the toolbar delivers what result?

  A. It graphs the throughput of the first listed IP.

  B. It sums the throughput for the highlighted IP addresses and then graphs the result.

  C. It graphs the throughput for each of the highlighted IP addresses overlaid on the same graph.

  D. It does nothing, as more configuration is needed.

  Correct Answer: C

• Question 124:

  What parameter is used to identify the originating IP in web transaction analysis?

  A. Business group membership

  B. Three-way handshake

  C. X-Forwarded-For

  D. User session tracking identifier

  Correct Answer: C

• Question 125:

  User response time is an estimate of how quickly a client will receive the payload for an individual data request. This metric is the sum of the average of:

  A. Connection setup time, server response time, data transfer time, retransmission delay, network roundtrip time (in), network roundtrip time (out)

  B. Retransmission delay, server response time, payload transfer time

  C. Connection setup time, server response time, retransmission delay, network roundtrip time (in), network roundtrip time (out)

  D. Data transfer time, server response time, connection setup time, retransmission delay

  E. Server response time, payload transfer time, data transfer time

  Correct Answer: D

• Question 126:

  Which takes precedence if a global app definition on a director is applied to an appliance where a conflicting local app definition exists?

  A. Local app

  B. Global app

  C. Both app definitions collect data simultaneously.

  D. Neither app definition collects data.

  Correct Answer: B

• Question 127:

  AppResponse Xpert's Application Stream Analysis calculates metrics for which built-in groups, without configuration? (Select 3)

  A. Business group

  B. Web application

  C. IP address

  D. Classless Inter-Domain Routing (CIDR) subnet

  E. dest-as

  Correct Answer: ACE

• Question 128:

  To decode SSL traffic, AppResponse Xpert requires which of the following?

  A. Private key and CA-signed public certificate in PEM or PKCS12 formats

  B. Private key and CA-signed public certificate in two separate files (PEM or DER formats)

  C. CA-signed public certificate in PEM format

  D. Private key in PKCS12 format

  E. Private key in PEM format

  Correct Answer: E

• Question 129:

  In the Database Performance module, the Response Time (First Response) (sec) metric refers to:

  A. The cold cache response time, when the information is first requested from the database

  B. The response time from the warm cache, known as the First Response table

  C. The response time measured from the start of the database query to the receipt of the final response packet

  D. The response time measured from the start of the database query to the receipt of the first response packet

  E. The response time for stored procedure queries into the database

  Correct Answer: D

• Question 130:

  What are the four metric granularites AppResponse Xpert stores?

  A. 1 minute, 5 minutes, 1 hour, 1 day

  B. 5 minutes, 15 minutes, 1 hour, 1 day

  C. 1 minute, 30 minutes, 8 hours, 1 day

  D. 5 minutes, 30 minutes, 60 minutes, 8 hours

  Correct Answer: A