DRAG DROP
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:
Ensures that hosts on LAN2 can communicate with hosts on LAN1.
Supports at least 100 IPv4 hosts.
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.
Answer: 
Explanation:
The Subnet Mask specifies which bits of the IP address identify the host system and which
bits identify the network where the host system resides.
References:
Exam Ref: 70-410: Installing and Configuring Windows Server 2012 R2, Chapter4:
Deploying and configuring core network services, Objective 4.1: Configure IPv4 and IPv6
addressing, p.192, 196
subnet mask has to have > 100 IP addresses.128 provides128. so 255.255.255.128 is required. /27 is the lan 1 which has 32 hosts so is occupying 0 and 16. so 128 is next.
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You are absolutely right mate, the answer is correct, just a small contribution from my side only. No offence. /27 gives 30 hosts and /25 or .128 gives 126 hosts. Don’t forget network ID and broadcast address.
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