Instructor: Rose Asutaku Welcome to Network+ Instructor: Rose Asutaku

Housekeeping Room Orientation Restrooms/Codes Break Room Emergency Exits Class Time: 8:30am – 4:30pm Breaks/Lunch

Introduction/Course Overview Name: Current Field: IT Experience: Expectations from this course: 1 Fun Thing About Me: Your Turn! Exam: 84 questions 5-7 simulations and the rest are multiple choice 90 minutes Book has 12 chapters. We’ll cover about 3 chapters a day

Today’s Objectives How are decimal numbers represented in binary format? How is binary converted back to decimal format? What is the format of an IPv4 address? WIIFM?

Binary and Decimal Format Decimal uses Base-10 numbering. Ten digits, in the range of 0-9. Binary uses Base-2 numbering. Only two digits, 0 and 1. 128 64 32 16 8 4 2 1

Converting Decimal to Binary When converting from decimal to binary, place a 1 under each value that you need to add together to make the decimal number. Use the chart from left to right. Example: What is 177 in binary? Try this example on your own: 127

Converting Binary to Decimal Typically used in translating 8 bits ( 1 or 0) at a time in IPv4 addresses, which we will discuss later. All you do is plug those 8 bits into your chart, from left to right. Add every value which has a 1 under it to get your decimal number. Example: What is 10011100 in decimal? 1 Try this example on your own: 10101010

IPv4 32-bit address written in dotted-decimal notation 4 octets with 8 bits in each octet to make up the 32 bits Example: 192.168.31.2 11000000.10101000.00011111.00000010