Google IT Support Professional Certification - Course 1: Technical Support Fundamentals Exam Latest Graded A+

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Binary System - ANSWER The communication that a computer uses, also known as a base-2 numeral system Byte - ANSWER A group of 8 bits is referred to as a byte. Each byte can store one character, and... we can have 256 possible values thanks to the base-2 system (2^8) Character encoding - ANSWER Assigns our binary values to characters, so that we as humans can read them UTF-8 - ANSWER Allows us to store a character in more than one byte Logic Gates - ANSWER Allow our transistors to do more complex tasks, like decide where to send electrical signals depending on logical conditions What is the highest decimal value you can represent with a byte - ANSWER 255 Abstraction - ANSWER To take a relatively complex system and simplify it for our own use Hardware Layer - ANSWER Made up of the physical components of a computer Operating System - ANSWER Allows hardware to communicate with the system Software Layer - ANSWER How we as humans interact with our computer User - ANSWER Interacts with the computer Ports - ANSWER Connection points that we can connect devices to that extend the functionality of our computer CPU - ANSWER Central Processing Unit. The brain of our computer, it does all the calculations and data processing RAM - ANSWER Random Access Memory. RAM is our computer's short term memory Hard Drive - ANSWER Holds all of our data, which includes all of our music, pictures, applications. Motherboard - ANSWER The body or circulatory system of the computer that connects all the pieces together. Programs - ANSWER Instructions that tell the computer what to do. External Data Bus - ANSWER How data travels through the computer. Registers - ANSWER They let us store the data that our cpu works with. Memory Controller Chip - ANSWER A bridge between the cpu and the ram. Address Bus - ANSWER Connects the cpu to the mcc. How does the CPU, the address bus, the memory controller chip, and the external data bus work together? - ANSWER The cpu asks, through the address bus, for data that it needs. The MCC looks for the data in RAM and sends it back over through the External Data Bus. What is the simplest way to describe the difference between cache and RAM? - ANSWER Getting something from RAM is like getting food out of a refridgerator, getting something from cache is like pulling food from your pocket; it stores recently or frequently used data. How many levels of cache in a CPU? - ANSWER Three levels: L1, L2, L3. Which is the smallest and fastest cache? - ANSWER L1. Clock Wire - ANSWER Computer sends a voltage to the clock wire to let the cpu know that it can start doing calculations. Clock Cycle - ANSWER When you send a voltage to a clock wire. Clock Speed - ANSWER The maximum number of clock cycles that it can handle in a certain time period. Gigahertz to cycles per second? - ANSWER For example, 3.4 GHz is 3.4 billion cycles per second. LGA - ANSWER There are pins that stick out of the motherboard, the cpu has holes. Pin Grid Array - ANSWER There are pins that stick out of the cpu, the motherboard has holes. What is the significance of 32 and 64 bit? - ANSWER They reference the cpu archiecture and state how much data they process efficiently. What is the difference between 32-bit and 64-bit versions of Windows? - ANSWER The terms 32-bit and 64-bit refer to the way a computer's processor handles information. The 64-bit of Windows handles large amounts of RAM more effectively than a 32-bit system. Volatile - ANSWER Once we power off our machines, the data stored in RAM is cleared DRAM - ANSWER Dynamic Random Access Memory. DIMM - ANSWER Dual Inline Memory Module. Have different size of pins on them. SDRAM - ANSWER Synchronous Dynamic Random Access Memory. DDR SDRAM - ANSWER Double Data Rate Synchronous Random Access Memory. Chipset - ANSWER Decides how components talk to each other on our machine. Northbridge - ANSWER The chip that interconnects RAM and video cards. Southbridge - ANSWER Maintains our I/O, such as hard drives, and USB devices. What does the Chipset do? - ANSWER Allows us to manage data between our CPU, RAM, and peripherals. Peripherals - ANSWER External devices we connect to our computer like a mouse, keyboard, and monitor. Expansion slots - ANSWER Gives us the ability to increase our functionality of our computer. PCIe - ANSWER Peripheral Component Interconnect Express. ATX - ANSWER Advanced Technology eXtended. ITX - ANSWER Information Technology eXtended. How many bits are in 1 byte? - ANSWER 8 bits. How many bytes are in 1 kilobyte? - ANSWER 1,024 bytes. How many kilobytes are in 1 megabyte? - ANSWER 1,024 kilobytes. How many megabytes are in 1 gigabyte? - ANSWER 1,024 megabytes. How many gigabytes are in 1 terabyte? - ANSWER 1,024 gigabytes. HDD - ANSWER Hard disk drive. Uses a spinning platter and a mechanical arm. RPM - ANSWER Revolution per minute. The speed at which a platter can be rotated. SSD - ANSWER Solid State Drives. Have no moving parts. Data is stored on chips. They are much faster than HDDs. What are the pros and cons of HDD and SDD? - ANSWER HDDs are more affordable but more prone to damage, SSDs are more expensive and less risky. SATA - ANSWER Serial ATA. Sata drives are hot swappable. DC - ANSWER Direct Current AC - ANSWER Alternating Current Wattage - ANSWER The amount of volts and amps that a device needs. Peripherals - ANSWER Anything that you connect to your compute externally that adds functionality. What is the speed of USB 2.0? - ANSWER 480 Mb/s What is the speed of USB 3.0? - ANSWER 5 Gb/s What is the speed of USB 3.1? - ANSWER 10 Gb/s Difference between MB and Mb/s? - ANSWER MB is megabyte or unit of data storage, while MB/s is a megabit per second, which is a unit of data transfer rate. Remember that 1 byte is 8 bits, so to transfer a 1MB file in a second, you need an 8 Mb/s connection speed. What are the colors of USB 2.0, 3.0, 3.1? - ANSWER Black for 2.0, Blue for 3.0, Teal for 3.1. Can change depending on manufacturers. Drivers - ANSWER Instructions that tell the cpu how to use external devices. ROM Chip - ANSWER Motherboard stores the BIOS on the ROM chip (read only memory). UEFI - ANSWER Unified Extensible Firmware Interface. POST - ANSWER Power on self test. [Show More]

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