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DNS & Name Resolution for Active Directory Flashcards

6 cards from real MCTS 70-640 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the effect of setting a DNS zone's 'Allow zone transfers' to 'Only to servers listed on the Name Servers tab'?

    Answer: Restricts zone transfers to only authoritative secondary DNS servers

    Restricting zone transfers to listed name servers prevents unauthorized DNS servers from retrieving zone data, improving security.

  2. Which command-line tool lets you interactively query DNS records and troubleshoot name resolution problems?

    Answer: nslookup

    nslookup is the primary interactive command-line utility for querying DNS servers and diagnosing DNS resolution issues.

  3. What does the DNS TTL value control?

    Answer: How long a resolver caches a DNS record before requesting a fresh copy

    TTL (Time to Live) specifies in seconds how long a DNS record can be cached by resolvers before they must query the authoritative server again.

  4. Which Windows Server 2008 DNS feature enables name resolution for clients that query for short (single-label) names?

    Answer: GlobalNames zone

    The GlobalNames zone allows administrators to publish single-label DNS names without relying on WINS, supporting legacy application name resolution.

  5. What is a DNS delegation, and when is it used?

    Answer: Transferring authority for a subdomain to a different set of DNS servers

    A delegation passes authority for a child DNS zone to different name servers, allowing decentralized management of the DNS namespace.

  6. After promoting a new domain controller, which Netlogon log file confirms that DNS SRV records were successfully registered?

    Answer: C:\Windows\debug\netlogon.log

    The Netlogon service logs DNS registration activity to netlogon.log in the Windows\debug folder, showing success or failure of SRV record registration.