TXT Records and SPF in DNS Configuration
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Questions and Answers

Which of the following is the primary purpose of TXT records in the DNS configuration?

  • To specify the IP addresses allowed to send email on behalf of a domain (correct)
  • To configure the domain's mail exchange (MX) records
  • To provide information about the domain owner's contact details
  • To identify the authoritative name servers for a domain

    • What is the main function of NS (Name Server) records in the DNS hierarchy?

  • To provide human-readable information about a domain, such as copyright notices
  • To configure DKIM (DomainKeys Identified Mail) authentication for email messages
  • To identify the authoritative DNS servers responsible for a domain's information (correct)
  • To verify domain ownership for services like Google Webmaster Tools

    • Which of the following is a common use of TXT records in addition to SPF configuration?

  • Configuring the domain's name server (NS) records
  • Defining the domain's mail exchange (MX) records
  • Specifying the IP addresses allowed to send email on behalf of the domain
  • Verifying domain ownership for services like Google Webmaster Tools (correct)

    • What happens when a recursive DNS resolver does not find the IP address for a domain in its local cache?

    <p>The resolver starts a recursive search of the DNS hierarchy, starting from the root servers</p> Signup and view all the answers

    How can TXT records be used in the context of email authentication?

    <p>TXT records can be used to specify the IP addresses allowed to send email on behalf of the domain (SPF)</p> Signup and view all the answers

    Which of the following is NOT a common use of TXT records in the DNS configuration?

    <p>Configuring the domain's mail exchange (MX) records</p> Signup and view all the answers

    What is the purpose of the minimum time-to-live (TTL) value for resource records in a DNS zone?

    <p>It specifies the default time-to-live for all resource records in the zone.</p> Signup and view all the answers

    What is the primary purpose of the DNS SRV (Service) record?

    <p>To specify the hostname and port number of a server that provides a particular service.</p> Signup and view all the answers

    Which of the following is NOT a required field in a DNS SRV record?

    <p>Time-to-Live (TTL)</p> Signup and view all the answers

    What is the purpose of the Priority field in a DNS SRV record?

    <p>It specifies the relative priority of the target host among multiple hosts with the same service and protocol.</p> Signup and view all the answers

    What is the purpose of the Weight field in a DNS SRV record?

    <p>It specifies the relative weight of the target host among multiple hosts with the same priority.</p> Signup and view all the answers

    What is the purpose of the Port field in a DNS SRV record?

    <p>It specifies the port number on which the service is provided.</p> Signup and view all the answers

    What does an MX record in DNS do?

    <p>Directs mail to an email server</p> Signup and view all the answers

    Which type of DNS record is used to store text notes for email security purposes?

    <p>TXT record</p> Signup and view all the answers

    What does a PTR record provide in DNS?

    <p>Domain name in reverse-lookups</p> Signup and view all the answers

    Which record type in DNS stores admin information about a domain?

    <p>SOA record</p> Signup and view all the answers

    What is the purpose of an SPF TXT record in DNS?

    <p>Provides sender policy framework information</p> Signup and view all the answers

    In DNS, what does an NS record store?

    <p>Name server for a DNS entry</p> Signup and view all the answers

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