Your network contains an Active Directory domain named contoso.com. The domain contains a 
member server named Hyperv1 and a domain controller named DC1. Hyperv1 has the Hyper-V 
server role installed. DC1 is a virtual machine on Hyperv1. Users report that the time on their client computer is incorrect. You log on to DC1 and verify that the time services are configured correctly. You need to prevent time conflicts between the time provided by DC1 and other potential time sources. What should you configure？ To answer， select the appropriate object in the answer area.

You are configuring a test network. The test network contains a subnet named LAN1. LAN1 uses 
the network ID of 10.10.1.0/27. You plan to add a new subnet named LAN2 to the test network. LAN1 and LAN2 will be connected by a router. You need to identify a valid network ID for LAN2 that meets the following requirements： 
（1）Ensures that hosts on LAN2 can communicate with hosts on LAN1.
（2）Supports at least 100 IPv4 hosts. 
（3）Uses only private IP addresses. 
Which network ID should you use？ To answer， drag the appropriate network ID and subnet mask to the correct location in the answer area.