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ee0-503 braindumps materials

Filed under: Exam Express
03 August 2009

ee0-503 Braindumps Description

Exam Number/Code: ee0-503
Questions and Answers:40 Q&As

Updated: 2009-09-15
Exam Name: F5 3-Dns V4 Exam

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Exam : Exam Express EE0-503
Title : F5 3-DNS V4 Exam

1. What might happen if the big3d agent becomes overloaded due to a large number of local DNSs making resolution requests?
A. The TTL setting for the Wide-IP increases.
B. Some probe statistics may fail to be updated.
C. Address responses to local DNSs are delayed until the big3d agent recovers.
D. The 3-DNS System will not respond to DNS queries until the big3d agent recovers.
Answer: B

2. A Wide-IP has two pools. The first has a set of five Virtual Servers. The second pool redirects requests to a Content Delivery Network (CDN). How can limits and thresholds be used to manage traffic for this Wide-IP? (Choose two.)
A. If requests exceed the first pool’s threshold, additional requests can be sent to the CDN.
B. If requests exceed the second pool’s threshold, additional requests can be sent to the Virtual Servers in the first pool.
C. If requests exceed the Wide-IP’s threshold, additional requests can be ignored to prevent overloading the Virtual Servers.
D. If requests exceed the second pool’s threshold, additional requests can be load balanced between the Virtual Servers and the CDN.
Answer: AB

3. A 3-DNS System performs a name resolution that is not a Wide-IP. The name is in a domain for which the 3-DNS System is authoritative. Where does the information come from?
A. 3-DNS System cannot resolve a host name that is not a Wide-IP.
B. It comes from BIND database (zone) files on the 3-DNS System.
C. It comes from the database of previously cached name resolutions.
D. It comes from a zone transfer initiated when the request was received.
Answer: B

4. A specific ECV can be used to test _____.
A. a Virtual Server within a pool
B. all Virtual Servers in a single pool
C. all Virtual Servers in all pools in a Wide-IP
D. all Virtual Servers in all pools of a group of Wide-IPs
Answer: C

5. What is the difference between primary and secondary DNS servers?
A. Only primary servers can issue authoritative responses.
B. Primary servers host the original copy of the zone database file.
C. Primary servers resolve names more efficiently than secondary servers.
D. Secondary servers act as back-ups and will respond only if the primary fails.
Answer: B

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