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36.
Which type of scope would you confgure if you needed to lease IP addresses in the following range: 224.0.0.0 to 239.255.255.255?
  • A.
    Split scope
  • B.
    Superscope
  • C.
    Multicast scope
  • D.
    DHCPv6 scope
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
  • A. Incorrect: You confgure a split scope when you want to split a single scope across multiple DHCP servers.
  • B. Incorrect: You use a superscope when you want to extend an existing scope by adding an additional scope.
  • C. Correct: You use Multicast scopes to lease IP addresses in the range 224.0.0.0 to 239.255.255.255.
  • D. Incorrect: You use DHCPv6 scopes for IPv6 addresses.
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37.
Your organization has not confgured a reverse lookup zone in DNS and management does not believe one must be confgured in the future. Errors are occurring because DHCP clients are attempting to register records in the reverse lookup zone. Which of the following settings would you change on the DHCP server to stop these errors from occurring?
  • A.
    Discard A And PTR records When Lease Is Deleted
  • B.
    Dynamically Update DNS Records For DHCP Clients That Do Not Request Updates.
  • C.
    Disable Dynamic Updates For DNS PTR Records
  • D.
    Enable DHCP Name Protection
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
  • A. Incorrect: Confguring this setting deletes A and PTR records when the lease is deleted; it does not stop PTR records from being created or updated.
  • B. Incorrect: This setting allows clients that do not request dynamic updates to have updates to DNS processed.
  • C. Correct: You want to stop the creation of and updating of PTR records. Confguring this setting will accomplish this goal.
  • D. Incorrect: This setting stops non-Microsoft clients from registering names in DNS that already exist.
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38.
Which of the following should be confgured when you wanted to change the number of ports available when a DNS server makes a query to another DNS server on behalf of a client?
  • A.
    Netmask ordering
  • B.
    Socket pool
  • C.
    Cache locking
  • D.
    DNSSEC
  • Answer & Explanation
  • Report
Answer : [B]
Explanation :
  • A. Incorrect: Netmask ordering allows a DNS server to return a record that exists on the client’s subnet if multiple records exist and one of those records indicates that the queried host resides on the client’s subnet.
  • B. Correct: You confgure the socket pool when you want to change the number of ports available when a DNS server makes a query to another DNS server on behalf of a client.
  • C. Incorrect: Cache locking determines how long a record remains in the DNS server cache before it can be overwritten.
  • D. Incorrect: DNSSEC allows DNS records to be cryptographically signed so that clients can verify their authenticity.
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39.
Which of the following Windows PowerShell cmdlets are used to view DNS zone statistics?
  • A.
    Get-DNSServerForwarder
  • B.
    Get-DNSServerSigningKey
  • C.
    Get-DNSServerStatistics
  • D.
    Get-DNSServerZone
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
  • A. Incorrect: This cmdlet gets information about DNS forwarder confguration.
  • B. Incorrect: This cmdlet retrieves information about DNS server signing keys.
  • C. Correct: Use the Get-DNSServerStatistics cmdlet to retrieve DNS server zone statistics.
  • D. Incorrect: This cmdlet gets details of the zones hosted by the DNS server. It does not retrieve DNS server zone statistics.
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40.
Which of the following resource records is associated with a host record in a zone and allows a DNS client to verify the authenticity of the host record?
  • A.
    NSEC
  • B.
    PTR
  • C.
    RRSIG
  • D.
    CNAME
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
  • A. Incorrect: NSEC records are returned when a host record does not exist in a DNSSEC secured zone.
  • B. Incorrect: PTR records are used in reverse lookup zones to point to host records.
  • C. Correct: Each record in a DNSSEC secured DNS zone has an associated RRSIG record that allows a DNS client to verify the authenticity of the record.
  • D. Incorrect: A CNAME record, also known as an alias record, points at a host record and allows for an alternate name to be associated with the host record.
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