Review Questions

You can find the answers in the Appendix.

1. What record type is used to specify the IPv4 address of a domain?

   1. AAAA
   2. A
   3. NS
   4. SOA

2. The CEO of your startup just read a news report about a company that was attacked by something called cache poisoning. The CEO wants to implement additional security measures to reduce the risk of DNS spoofing and cache poisoning. What would you recommend?

   1. Using DNSSEC
   2. Adding SOA records
   3. Adding CNAME records
   4. Deleting CNAME records

3. What do the TTL parameters specify in a DNS record?

   1. Time a record can exist in a cache before it should be queried again
   2. Time a client has to respond to a request for DNS information
   3. Time allowed to create a CNAME record
   4. Time before a human has to manually verify the information in the DNS record

4. What command is used to create a DNS zone in the command line?

   1. A. gsutil dns managed-zones create
   2. B. gcloud beta dns managed-zones create
   3. C. gcloud beta managed-zones create
   4. D. gcloud beta dns create managed zones...