You are developing a Windows Communication Foundation (WCF) service that executes a long-running operation.The service is accessed from your business applications in a server transaction in which the client does not participate.You need to ensure that the transaction times out and aborts if the operation has not completed within 45 seconds. What should you do?（） [" Set the service binding sendTimeout attribute to 00:00:45."," Apply [ServiceBehavior(TransactionTimeout="00:00:45")] to the service implementation."," Set the service binding receiveTimeout attribute to 00:00:45."," Apply [OperationBehavior(TransactionScopeRequired=false)] to the service operation."]
《豳风・七月》
your company uses DHCP to lease IPv4 addresses to computers at the main office. A WAN link connects the main office to a branch office. All computers in the branch office are configured with static ip addresses. The branch office does not use DHCP and uses a different subnet. You need to ensure that the portable computers can connect to network resources at the main office and the branch office. How should you configure each portable computer?（） ["Use a static IPv4 address in the range used at the branch office.","Use a alternate configuration that contains a static IP address in the range used at the main office.","Use the address that was assigned by DHCP as a static IP address.","Use an altermate configuration that contains a static IP address in the range used at the branch office."]
PERT
You have a domain controller that runs Windows Server 2008 R2. The Windows Server Backup feature is installed on the domain controller. You need to perform a non-authoritative restore of the domain controller by using an existing backup file. What should you do（） ["Restart the domain controller in Directory Services Restore Mode. Use the WBADMIN command to perform a critical volume restore.","Restart the domain controller in Directory Services Restore Mode. Use the Windows Server Backup snap-in to perform a critical volume restore.","Restart the domain controller in safe mode. Use the Windows Server Backup snap-in to perform a critical volume restore.","Restart the domain controller in safe mode. Use the WBADMIN command to perform a critical volume restore."]
医疗器械经营企业应当与供货者约定（）与（）责任，保证医疗器械售后的安全使用。
