You have a DNS server named Served that has a Server Core Installation on Windows Server 2012
R2.
You need to view the time-to-live (TTL) value of a name server (NS) record that is cached by the DNS
Server service on Server1.
What should you run?
A.
Show-DNSServerCache
B.
nslookup.exe
C.
ipconfig.exe /displaydns
D.
dnscacheugc.exe
Explanation:
The Show-DNSServerCache shows all cached Domain Name System (DNS) server resource records in
the following format: Name, ResourceRecordData, Time-to-Live (TTL).
ipconfig.exe /displaydns also shows TTL of cached DNS records
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Yes ipconfig also displays cached records but for client side dns resolver. Question says “… that is cached by the DNS Server service” so you have to use Show-DnsServerCache
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Question is asking for Name Server (NS) records.
IPConfig /displayDNS dose not show NS records
Show-DNSServerCache
HostName RecordType Timestamp TimeToLive RecordData
——– ———- ——— ———- ———-
com NS 0 19:37:43 h.gtld-servers.net.
com NS 0 19:37:43 c.gtld-servers.net.
com NS 0 19:37:43 f.gtld-servers.net.
com NS 0 19:37:43 e.gtld-servers.net.
com NS 0 19:37:43 i.gtld-servers.net.
com NS 0 19:37:43 d.gtld-servers.net.
com NS 0 19:37:43 k.gtld-servers.net.
com NS 0 19:37:43 l.gtld-servers.net.
com NS 0 19:37:43 g.gtld-servers.net.
com NS 0 19:37:43 a.gtld-servers.net.
com NS 0 19:37:43 m.gtld-servers.net.
com NS 0 19:37:43 j.gtld-servers.net.
com NS 0 19:37:43 b.gtld-servers.net.
No NS
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