Lesson 5

Question 1

DHCP clients automatically assign themselves an APIPA address if they are unable to get an IP address from a DHCP server. An APIPA address always starts with 169.254 in the IP address. It can be any address in the range of 169.254.0.1 to 169.254.255.254.

Answer 1

Automatic Private Internet Protocol Addressing (APIPA)

Question 2

An upgrade of classful IP addressing. IP addresses are accompanied with a subnet mask, and the subnet mask doesn’t have to comply with conventional classful IP addressing rules. CIDR notation identifies the subnet mask with a slash (/) and the number of 1s in the subnet mask such as 192.168.1.20/26 to represent a subnet mask of 255.255.255.192.

Answer 2

Classless Inter-Domain Routing (CIDR)

Question 3

An octet is 8 bits. An IPv4 address includes 32 bits that can be represented as four decimals in dotted decimal format. Each decimal can also be represented as an octet of eight bits, with four octets giving a total of 32 bits.

Answer 3

Octet

Question 4

A subnet is a group of computers separated from other computers by one or more routers.

Answer 4

Subnet

Question 5

The subnet mask is used with the IP address to determine which portion of the IP address is the network ID and which portion is the host ID.

Answer 5

Subnet mask