As the network administrator for a growing ISP, you want to make efficient use of your network addresses. One of the networks addresses IANA assigned to you is a Class C network of 194.15.78.0. You have decided to use the addresses in this Class C network to satisfy the IP address requirements of 24 corporate customers who need between 20 and 24 addresses each. Without using a subnet calculator, calculate a subnet mask that meets their needs. List the subnet mask and the first four subnetwork addresses the mask will create.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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As the network administrator for a growing ISP, you want to make efficient use of your network addresses. One of the networks addresses IANA assigned to you is a Class C network of 194.15.78.0. You have decided to use the addresses in this Class C network to satisfy the IP address requirements of 24 corporate customers who need between 20 and 24 addresses each. Without using a subnet calculator, calculate a subnet mask that meets their needs. List the subnet mask and the first four subnetwork addresses the mask will create.

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