CCNA 1 Chapter 5

Binary numbering system consists of 1s and 0s, called bits.

Decimal numbering system consists of digits 0 through 9.

Each address is made up of a string of 32 bits, divided into four sections called octets.

Each octet contains 8 bits (or 1 byte) separated by a dot.

For ease of use by people, this dotted notation is converted to dotted decimal.

Positional notation means that a digit represents different values depending on the 'position' the digit occupies in the sequence of numbers.

The binary positional value table is useful in converting a dotted decimal IPv4 address to binary.

Hexadecimal is a base sixteen numbering system, using the digits 0 through 9 and letters A to F.

Hexadecimal is used to represent IPv6 addresses and MAC addresses.

Each four hexadecimal character group is referred to as a hextet.

Convert 1<phone>0.0<phone>0 to decimal.

Decimal 168 is written as 10101000 in binary.

IPv6 addresses are 128 bits in length.

Convert the decimal number to 8-bit binary strings.

Convert the hexadecimal number to 4-bit binary strings.

Method 1: Double Dabble.

Method 2: Subtraction.

The binary positional notation system operates as shown in the tables below.

543210 = 5x1000 + 4x100 + 3x10 + 2x1.

543210 = 153816.

Follow the steps listed to convert decimal numbers to hexadecimal values.

Cell I2 Formula: =sum(A2128+B264+C232+D216+E28+F24+G2*2+H2).

Convert each four binary numbers into their equivalent hexadecimal digit.

Create 8-bit binary grouping starting from the rightmost position.

177 in binary is 10110001.

Convert decimal 168 to binary.

168 is A8 in hexadecimal.

D2 is 210 in decimal.