Network SecurityAssignment#1Q 1) What is the range of class A, B, C, D IP addresses? A1) IP addresses are divided into 4 classes with different IP ranges. The most commonly used classes are A, B, and C. The classes have a different range of valid IP addresses for each class. Class Address Range (Start) Address Range (End) Class A 0.0.0.0 127.255.255.255 Class B 128.0.0.0 191.255.255.255Class C 192.0.0.0 223.255.255.255Class D 224.0.0.0 239.255.255.255Q 2) What is classless IP address and Classless Inter Domain Routing (CIDR)?A 2) CIDR (Classless Inter-Domain Routing) ), also known as super-netting, is a method of allocating IP addresses and routing Internet Protocol packets. The result is CIDR, which dramatically increases the number of available Internet addresses. The CIDR assigns each IP address a network prefix. This network prefix determines whether it is an aggregation of network gateways or a single gateway. A shorter prefix for the destination IP address describes many possible destinations and is less specific. A longer prefix can describe the destination gateway more specifically. When forwarding packets, routers must use the longest or most specific network prefix. A CIDR network address is in the format: 192.30.250.00/18The "192.30.250.00" is the network address and the "18" shows that the first 18 bits represent the network portion of the address and the last 14 bits remaining for specific host addresses. CIDR allows a routing table entry to represent the aggregation of existing networks in the forwarding path that do not need to be specified on that particular gateway. This aggregation of networks into a single address is called a supernet. Q 3) What is Network ID? A 3) Each IP address (v4) is 32 bits long. The set...... in the center of the card......ernet. Commonly, web servers are used to host websites, but there are other uses as well, such as gaming, data storage, etc. Every web server has an IP address and a domain name. Every computer on the Internet that contains a Web site must have a Web server program. Two major Web servers are Apache, the most popular Web server, and Microsoft Internet's Information Server (IIS). Others include Novell's Web Server for its NetWare users.1. Apache is free while IIS is included in the Windows package.2. IIS runs only on Windows while Apache can run on almost any operating system, including UNIX, Apple's OS Additionally, IIS has dedicated staff to respond to most issues while support for Apache comes from the community itself.3. IIS is optimized for Windows because it comes from the same company. The Windows operating system is subject to security risks.