31 Days Before Your CCENT Certification

CCNA Discovery 1, Chapter 5

5.1.1: The IP address typically is assigned to the network interface card (NIC). In addition, routers need an IP address for each interface. Layer 3 packets include a destination and source IP address used by routers to determine the path over the network.

5.1.2: An IP version 4 (IPv4) address is made up of 32 binary bits. These bits are divided into four octets (8 bits) and are represented in decimal format. Table 20-1 shows one octet of an IP address and the math used to convert the octet to decimal. The value of each bit in an octet is determined by the powers of 2 from right to left. If there is a 1 in the bit, the value is added to the decimal equivalent. If the bit is a 0, the value is not added to the decimal ...