少腹冷痛，阴部坠胀作痛，得温则减，遇寒加重，多见于A．B．C．D．E．

You are building a test environment to evaluate DNS Security Extensions (DNSSEC). You have a domain controller named Server1 that runs Windows Server 2008 R2 in your test environment. Server1 has the DNS Server server role installed. You need to configure Server1 to support the DNSSEC evaluation.Which two actions should you perform？（）

A. Create a new Quad-A (AAAA) DNS record.

B. Create a new Signature (SIG) DNS record.

C. Create a new Public key (KEY) DNS record.

D. Create a new Well-known service (WKS) DNS record.

You have a DNS server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). Server1 is astand-alone server.You perform a full backup of Server1 every day.A DNS zone on Server1 is deleted by using the DNS snap-in.You need to restore the DNS zone on Server1.What should you do？（）

A. Restore the system state data.

B. Restore all files in the %systemroot%\DNS folder.

C. Restore all files in the %systemroot%\System32\drivers\etc folder.

D. Copy all files from the %systemroot%\DNS\Backup folder to the %systemroot%\DNS folder.

You have a DNS server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2).Server1 is a stand-alone server.You perform a full backup of Server1 every day.A DNS zone on Server1 is deleted by using the DNS snap-in.You need to restore the DNS zone on Server1.What should you do？（）

A. Restore the system state data.

B. Restore all files in the %systemroot%\DNS folder.

C. Restore all files in the %systemroot%\System32\drivers\etc folder.

D. Copy all files from the %systemroot%\DNS\Backup folder to the %systemroot%\DNS folder.

d na.contoso.com. A server named Server1 runs the DNS Server server role. You notice stale resource records in the na.contoso.com zone. You have enabled DNS scavenging on Server1. Three weeks later, you notice that the stale resource records remain in na.contoso.com. You need to ensure that the stale resource records are removed from na.contoso.com.What should you do？（）

A. Stop and restart the DNS Server service on Server1.

B. Enable DNS scavenging on the na.contoso.com zone.

C. Run the dnscmd Server1 /AgeAllRecords command on Server1.

D. Run the dnscmd Server1 /StartScavenging command on Server1.

d na.contoso.com.zone. you have enabled DNS scavenging on server1. Three weeks later, you notice that the stale resource records remain in na.contoso.com. you need to ensure that the stale resource records are removed from na.contoso.com. what should you do？（）

A.Stop and restart the DNS service on server1.

B.Enable DNS scavenging on the na.contoso.com zone.

C.Run the dnscmd server1 /ageallrecords command on server1/.

D.Run the dnscmd server1 /startscavenging command on server1.

servers have the DNS server role installed. Server3 is configured to forward all DNS requests to server2. You update a DNS record on server2, you need to ensure that server3 is able to immediately resolve the updated DNS record. What should you do？（）

A.Run the dnscmd /clearcache on server3.

B.Run the ipconfig /flushdns command on server3.

C.Decrease the time-to-live (TTL) on the start of authority (SOA) record of na.contoso.com to 15minutes.

D.Increase the retry interval value on the start of authority (SOA) record of na.contoso.com to 15 minutes.

ber server in a branch office. You need to ensure that the DNS server in the branch office is able to query and DNS server in the main office, and you need to limit the number of DNS records that are transferred to the DNS server in the branch office. What should you do？（）

A.Configure a secondary zone on the DNS server in the branch office.

B.Configure a stub zone on the DNS server in the branch office.

C.Configure a stub zone on the DNS server in the main office.

D.Configure a primary zone on the DNS server in the branch office.

gainst your DNS server. You drive to the server site to investigate.You find no evidence of an attack, although the IDS application claims that a remote DNS server waged an attack on port 53 of your intranet DNS server.You check the logs and discover that a zone transfer has occurred.You check your zones and name resolution, and discover that all entries exist, and no unusual entries have been added to the database.What has most likely occurred？()

A.A DNS poisoning attack against your internal DNS server.

B.A denial-of-service attack against your internal DNS server.

C.A false positive generated by the IDS.

D.A malfunction of the internal name server.

d na.contoso.com. A server named Server1 runs the DNS Server server role.You notice stale resource records in the na.contoso.com zone. You have enabled DNS scavenging on Server1. Three weeks later, you notice that the stale resource records remain in na.contoso.com.You need to ensure that the stale resource records are removed from na.contoso.com.What should you do？（）

A. Stop and restart the DNS Server service on Server1.

B. Enable DNS scavenging on the na.contoso.com zone.

C. Run the dnscmd Server1 /AgeAllRecords command on Server1.

D. Run the dnscmd Server1 /StartScavenging command on Server1.