Packet Tracer 2.9.1

I'm almost at 100%. The only two I'm missing is both 'subnet mask' and I can't figure out what to do anywhere. It's not in the steps and again when I Google I find stuff that isn't related to this specific step.

Device Interface Subnet Mask Room-145 Room 146 Manager Reception VLAN 1 VLAN 1 NIC IP Address 172.16535 172.16 540 172 16.550 172.16 5 60 255 255 255 0 255.255.2550 255.255.255.0 254 255 255 0 NIC Objectives Configure hostnames and IP addresses on two Cisco Internetwork Operating System (IOS) switches using the command-line interface (CLI). Use Cisco IOS commands to specify or limit access to the device configurations Use 105 commands to save the running configuration Configure two host devices with IP addresses Venity connectivity between the two PC end devices - Scenario As a recently hired LAN technician your network manager has asked you to demonstrate your ability to configure a small LAN Your tasks include configuring in settings on two switches using the Cisco IOS and configuring IP addresa parameters an host devices to provide end-to-end connectivity You are to use two switches and two hosts/PCs on a cabled and powered network Instructions Configure the devices to fulfill the requirements below . Requirements Use a console connection to access each switch Name Room 145 and Room 146 switches Use the Babu password for all lines Use the CW.E secret password Encrystall de tot passwords Configure an appropriate message of the day (MOTO) hacer Configure addressing for all devices according to the Addressing Table Save your configurations Venitconnectivity between all devices Combioti PT Activity: 03:55:21 Packet Tracer - Basic Switch and End Devi Configuration Addressing Table Interface IP Addre Room-145 Device Room-145 Room-146 Manager VLAN 1 VLAN 1 NIC 172.16.5.35 172.16.5.40 172.16.5.50 Time Elapsed: 03:55:21 Check Results Top Reset Activity