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Resource Records - Quiz

Each question is worth one point. Select the best answer or answers for each question.
1. Corporation.com uses the alias mail.corporation.com for the machine named gates.corporation.com. The IP address for this system is 192.168.56.3. Which of the following zone file entries reflects this fact?
Please select the correct answer:
  A. mail 192.168.56.3 IN CNAME gates.corporation.com.
  B. IN A 192.168.56.3 gates.corporation.com.
  C. IN PTR 56.168.192
  D. mail IN CNAME gates.corporation.com.

2. The corporation.com Internet Service Provider Supernet.net also supplies name service. The server named dns.supernet.net (IP address 111.234.11.154) is a secondary server for the corporation.com network. What is the new NS record you should add to reflect this relationship?
Please select the correct answer:
  A. IN NS dns.supernet.net
  B. IN NS dns.supernet.net.
  C. IN NS 111.234.11.154
  D. $IN NS dns.supernet.net.

3. You have been assigned to add a host to your network. Its IP address is 192.168.56.205. After configuring this system to participate on your DNS-enabled network, you must add this host to the DNS zone file. Specifically, you must add an address in the forward-lookup zone. The name of the host will be jobs. Which of the entries below is the correct forward-lookup zone entry?
Please select the correct answer:
  A. jobs IN A 192.168.56.205
  B. IN A 192.168.56.205 jobs
  C. IN PTR jobs
  D. 192.168.56.205 IN A jobs

4. You have just identified the forward-lookup zone for jobs (192.168.56.205). A reverse-lookup zone exists for the subnet (192.168.56.0). Now, which of the following entries given below constitutes a correct reverse-lookup zone entry for jobs?
Please select the correct answer:
  A. 205 IN PTR jobs.corporation.com
  B. 192.168.56.205 IN PTR jobs.corporation.com.
  C. 205 IN PTR jobs.corporation.com.
  D. 205 IN A jobs.corporation.com.

5. The host jobs is given the IPv6 address 2001:db8:56::205 in addition to its existing IPv4 address. What should you add to the forward-lookup zone?
Please select the correct answer:
  A. Replace the existing A record with jobs IN AAAA 2001:db8:56::205
  B. Add jobs IN AAAA 2001:db8:56::205, leaving the existing A record in place
  C. Add jobs IN A6 2001:db8:56::205
  D. Add jobs IN A 2001:db8:56::205

6. Which of the following are genuine restrictions on the use of CNAME records?
Please select all the correct answers:
  A. A CNAME cannot be placed at a zone apex, because the apex must carry SOA and NS records
  B. An MX record must not point at a name that is itself a CNAME
  C. The target of a CNAME must be an IP address rather than a name
  D. A name that owns a CNAME cannot also own records of other types

7. You want to restrict which certificate authorities may issue certificates for corporation.com, and you want a browser to learn the connection parameters for the site before it makes its first request. Which pair of record types addresses these two requirements?
Please select the correct answer:
  A. TXT and SRV
  B. CAA and HTTPS
  C. HINFO and WKS
  D. PTR and NS