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

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

3. 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

4. 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?

5. 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

6. 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

7. 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 in decimal? 1
Try this example on your own:

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