Program Certification A+ Intro Part 1

A+ is designed to be a vendor-neutral certification for those seeking to enter the information technology field. CompTIA recommends this certification for individuals who want to be problem-solvers in the world of endpoint management and technical support.
The A+ certification requires passing two separate exams:

The Core 1(220-1101) Exam Domains
Domains	%Exam
Mobile Devices	15%
Networking	20%
Hardware	25%
Virtualization and Cloud computing	11%
Hardware and Network Troubleshooting	29%

The Core 2(220-1102) Exam Domains
Operating Systems
Security
Software
Operational Procedures

What kind of jobs can I get?

Common job roles held by A+ certified individuals:

Help-desk
Technician
Field service technician
Associate network engineer
Junior systems administrator
Desktop support specialist
System support technician

Exam Details:

Up to 90 questions in 90 minutes
Multiple-choice
Drag and drops
Performance-based/Simulations
Requires a 675 out of 900
Recommended Experience:
9 to 12 months hands-on experience in the lab or field
Released: April 2022

Best practice methodology to resolve problems

Use these six steps to answer the questions

Identify the problem
Establish a theory of probable cause
Test the theory to determine the cause
If the theory is not confirmed, re-establish a new theory
Establish a plan of action to resolve the problem and implement the solution
Verify full system functionality Document the findings, actions, and outcomes

A+ USB Cables Types

USB Cables Descriptions and speed

DB 25 Connector	A D-shaped sub miniature pin that goes into the back of a computer and has two thumb screws on the side
Serial Cable	A cable that sends data in ones and zeros in a straight line, but it can only send one bit at a time, which is measured at the speed of cables in bits per second
DB9 Connector	A slow speed connection for much older mice keyboards and other external modems. A USB 1 and a USB 2 run at a much slower speed and should be split across a hub USB 1.0 has the slowest speed out of a USB with a maximum speed of 1.5 megabits per second.
USB 1.1	Known as full speed and runs at 12 megabits per second
USB 2.0	Known as high speed and runs at 480 megabits per second
USB 3.0	Known as super speed and is at least 5 gigabits per second
USB 3.1 Gen One	Runs at 5 gigabits per second
USB 3.1 Gen Two	Runs at 10 gigabits per second
USB 3.2 Gen 2×2	Runs at 20 gigabits per second
USB 4	▪ The most modern version of USB and can run at 40 gigabits per second ▪ A USB 4 and a USB 3.2 gen 2×2 must have a shorter cable because that is going to give the best performance ▪ The longer a cable, the more likelihood that the cable would not work as efficiently, or even at all ● Type A ● Type C ● Type B ● Type B Mini ● Type B Micro