Google IT Support Specialist Course

What does IT stand for?

information technology

The digital divide refers to ________

unequal access to and knowledge of information technology based on socioeconomic status

technical support

People who are available to help customers with problems

computer networking

the sharing of data or services

IT security

the set of defenses put in place to counter threats to technology infrastructure and data resources

True or False: Computers power almost everything in the world from calculators to satellite systems

True

What is an operating system?

software that supports a computer's basic functions, such as scheduling tasks, executing applications, and controlling peripherals.

Examples of operating systems

Microsoft Windows, Mac OS X, and Linux

What is open source software?

Software that can be freely used, modified, and shared

What is an algorithm?

a set of well-defined steps for performing a task or solving a problem

What does it stand for?

information technology

The digital divide refers to ________

unequal access to and knowledge of information technology based on socioeconomic status

technical support

People who are available to help customers with problems

computer networking

the sharing of data or services

IT security

the set of defenses put in place to counter threats to technology infrastructure and data resources

True or False: Computers power almost everything in the world from calculators to satellite systems

True

What is an operating system?

the software that supports a computer's basic functions, such as scheduling tasks, executing applications, and controlling peripherals.

Examples of Operating Systems

Microsoft Windows, Mac OS X, and Linux

What is open source software?

Software that can be freely used, modified, and shared

What is an algorithm?

a set of well-defined steps for performing a task or solving a problem

Examples of open source software

Mozilla Firefox

system administrator

a person in charge of managing and maintaining a computer system of telecommunication system

Infrastructure systems

the base foundation or shared IT services used for multiple applications.

character encoding

the representation of characters on the keyboard with bytes

Abstraction

a simplified representation of something more complex.

Computers count with ___ numbers

binary

4 layers of a computer

Hardware, Operating System, Software, Users

What is hardware?

The physical components of a computer.

What is software?

any set of instructions that tells the hardware what to do

What is a user interface?

the part of the computer with which the user interacts

logic gate

An electrical circuit that produces output as determined by the corresponding logic table.

How many possible values can we have with 8 bits?

256

What is a desktop?

A computer which can fit under or over a desk

What are ports?

Connection points that we can connect devices to that extend the functionality of our computer

What does the CPU stand for and what does it do?

Central Processing Unit; it is the brain of the computer which performs that calculation or data processing

What component does the CPU communicate heavily with?

The RAM

What does RAM stand for and what does it do?

Random Access Memory; is a computers short-term memory. Reads, changes, deletes and writes

What component is used to store long-term memory?

The Hard drive

What is a motherboard and what does it do?

the main circuit board of the computer and it connects all of the physical components of a computer together

What is the power supply?

Converts power from the wall outlet to a usable format for the computer and its components.

What are programs?

Instructions that a computer follows

What is EDB?

Eternal Data Bus

What does the MCC stand for?

memory controller chip

What does the MCC do?

Its the bridge between CPU and the RAM

What is the address bus?

It connects the CPU to the MCC

What is cache?

Very fast memory in the CPU, used to store frequently accessed data or instructions. Like stuff that we have in our pockets

What are the 3 levels of cache in a CPU?

L1, L2, L3

What is a clock wire?

Lets the CPU know when it can start calculations

What is gigahertz?

The number of billions of CPU cycles per second

True or False: CPUs are prone to overheating

True

True or False: Any CPU on to any motherboard

False

What are the 2 major CPU sockets

LGA (Land Grid Array) and PGA( Pin Grid Array

LGA CPU

Pins stick out of motherboard

PGA CPU

Pins located on processor itself

What are the type of bit architectures on CPUs?

32 bit and 64 bit architecture

What is 32 bit- architecture?

Capable of transferring 32 bits of data per clock cycle

What is 64 bit-architecture?

Capable of transferring 64 bits of data per clock cycle

What are the components on a motherboard?

Chipset, CPU, DIMM/RAM slots

What are the two chips on a chipset?

Northbridge and Southbridge

What is the northbridge chip?

One or more chips in a computer's chipset that controls communications between the CPU and RAM on the motherboard. (1)

What is the southbridge chip?

manages input/output (I/O) interfaces for the computer such as USB or hard drives

What are peripherals?

Physical devices that allow for data to be into a computer, data to be returned to the user,

Expansion slots

A space on the motherboard that increases functionality of the computer

Form factors are

A set of specifications on the size, shape, and configuration of a computer hardware component such as a case, power supply, or motherboard.

What is the most common form factor?

ATX (Advanced Technology Extended

What is a driver?

small program that tells the operating system how to communicate with a specific device

Where is the BIOS stored?

In the motherboard

What is BIOS?

BIOS stands for Basic Input Output System and is a combination of low-level software and drivers that function as the interface, intermediary, or layer between a computer's hardware and its operating system.

CMOS battery

The battery on the motherboard used to power the CMOS chip that holds BIOS setup data

What is a ROM chip?

The Read-Only Memory chips provides the software needed for the computer to start.

True or False: ROM is volatile like RAM

False

What is a POST?

Power On Self Test, A hardware check preformed during BIOS

What is UEFI?

Unified Extensible Firmware Interface

AC electricity

Electricity change

DC electriciy

Electricity flows in one direction

Power Supply