| Question | Answer |
| What is the format of an IPv4 address? | |
| What is the purpose of a subnet mask? | |
| What are the different classes of IPv4 addresses? | |
| What is the purpose of subnetting? | |
| What formula is used to calculate the number of hosts per subnet? | |
| What does /14 mean in the following IP address: 199.78.11.12/14? | |
| How do you configure IP addresses on a workstation? | |
| How do you configure IP addresses on an iPad? | |
| How do you configure IP addresses on mobile devices? | |
| Octet | An 8-bit binary number. An IPv4 address consists of four octets separated by a dot. |
| Subnet mask | A 32-bit number that defines which portion of an IPv4 address identifies the network address and which portion of the address defines the host address. |
| Internet Assigned Numbers Authority (IANA) | A nonprofit, private American corporation that oversees global IP address allocation, autonomous system number allocation, root zone management in the Domain Name System, media types, and other Internet Protocol-related symbols and internet numbers. |
| Public IP | An IP address that is used to access the internet. |
| Private IP | An IP address that is used only on an internal network. These IP addresses do not go out on the internet. |
| Automatic Private IP Addressing (APIPA) | A feature that allows a device to automatically assign itself an IP address on the 169.254.0.0 network when a DHCP server or manual configuration is unavailable. |
| Loopback address | special address is also known as home or localhost. This address is reserved by each network interface card (NIC) & is used for testing purposes. Ping requests can be sent to this address and if returned means that the NIC is capable of sending and receiv |
| Broadcast address | The last valid IP address on a network. It is reserved for broadcast functions. Any packet sent to this address will be sent to all devices on the network. |
| Network address | The first valid IP address on the network. This address is used for routing purposes to identify the network. |
| Subnetting | The process of dividing a large network into smaller networks. |
| Fixed-length subnet mask (FLSM) | Subnetting method in which each created subnet has an equal number of addresses. |
| Variable-length subnet mask (VLSM) | Subnetting method in which each subnet can be a different size. |
| Classless Inter-Domain Routing (CIDR) | A method for allocating IP addresses and for IP routing. CIDR notation is a simplified method of writing a network address with a slash followed by the number of bits in the network ID. |
| ANDing | The process used to determine the network address/ID. |
| Supernetting | The process of combining two or more networks. |
