Free 312-50v11 Exam Braindumps (page: 30)

Page 30 of 127

You have the SOA presented below in your Zone.
Your secondary servers have not been able to contact your primary server to synchronize information. How long will the secondary servers attempt to contact the primary server before it considers that zone is dead and stops responding to queries?

collegae.edu.SOA, cikkye.edu ipad.college.edu. (200302028 3600 3600 604800 3600)

  1. One day
  2. One hour
  3. One week
  4. One month

Answer(s): C



Tess King is using the nslookup command to craft queries to list all DNS information (such as Name Servers, host names, MX records, CNAME records, glue records (delegation for child Domains), zone serial number, TimeToLive (TTL) records, etc) for a Domain.

What do you think Tess King is trying to accomplish? Select the best answer.

  1. A zone harvesting
  2. A zone transfer
  3. A zone update
  4. A zone estimate

Answer(s): B



A zone file consists of which of the following Resource Records (RRs)?

  1. DNS, NS, AXFR, and MX records
  2. DNS, NS, PTR, and MX records
  3. SOA, NS, AXFR, and MX records
  4. SOA, NS, A, and MX records

Answer(s): D



Let's imagine three companies (A, B and C), all competing in a challenging global environment. Company A and B are working together in developing a product that will generate a major competitive advantage for them. Company A has a secure DNS server while company B has a DNS server vulnerable to spoofing. With a spoofing attack on the DNS server of company B, company C gains access to outgoing e-mails from company B. How do you prevent DNS spoofing?

  1. Install DNS logger and track vulnerable packets
  2. Disable DNS timeouts
  3. Install DNS Anti-spoofing
  4. Disable DNS Zone Transfer

Answer(s): C



Page 30 of 127



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