1. Determine basic IP addressing Use the IP address chart and your knowledge of IP address classes to answer the following questions: 1. What is the decimal and binary range of the first octet of all possible Class B IP addresses? Decimal: From: ________ To: ________ Binary: From: ________ To: ________ 2. Which octet(s) represent the network portion of a Class C IP address? ___________________ 3. Which octet(s) represent the host portion of a Class A IP address? ______________________ 4. What is the maximum number of useable hosts with a Class C network address? ___________ 5. How many Class B networks are there? ___________________ 6. How many hosts can each Class B network have? __________________________ 7. How many octets are there in an IP address? ________How many bits per octet? __________ 2. Determine the host and network portions of the IP address With the following IP host addresses, indicate the following: Class of each address Network address or ID Host portion Broadcast address for this network Default subnet mask The host portion will be all zeros for the network ID. Enter just the octets that make up the host. The host portion will be all ones for a broadcast. The network portion of the address will be all ones for the subnet mask. Fill in the following table: Host IP Address Address Class Network Address Host Addresses 1st - Last Network Broadcast Address Default Subnet Mask 215.14.55.136 120.1.1.10 151.127.221.244 194.125.35.199 173.12.239.244 1 3. Given an IP address of 142.226.0.15 and a subnet mask of 255.255.255.0, answer the following questions: What is the binary equivalent of the second octet? _____________________________________ What is the class of the address? _________________________________________________ What is the network address of this IP address? ______________________________________ Is this a valid IP host address (Y/N)? ______________________________________________ Why or why not? __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ 4. Determine which IP host addresses are valid for commercial networks For the following IP host addresses, determine which are valid for commercial networks and indicate why or why not. Valid means it could be assigned to any of the following: Workstation Server Printer Router interface Any other compatible device Fill in the following table: IP Host Address Valid Address? (Yes/No) Why or Why Not 100.255.255.10 156.1.255.255

224.200.150.70 190.50.236.0 195.234.253.6 127.34.25.189 180.221.285.196 131.92.94.95 2