A
True or False. Operating systems usually come pre-loaded on any computer you buy.
True
What BIOS stands for
What is Binary Input/Output System?
True of False. The Linux operating system is open sourced and released under the GNU General Public License (GPL), anyone can run, study, modify, and redistribute the source code, or even sell copies of their modified code.
True
The Desktop Operating System most popular by user base/market share.
What is Windows OS?
True or False. The BIOS has no inherent security risks since it's only used when the PC is first starting up
False.
BIOS security should still be managed to prevent hackers from executing malicious code on the OS.
Security group Cylance, in 2017, showed how modern BIOS security flaws could enable ransomware programs inside a motherboard's UEFI and exploit other PC BIOS vulnerabilities.
a type of software that allows you to perform specific tasks - it runs inside the operating system until you close it.
Most of the time, you will have more than one open at the same time, which is known as multitasking.
What is an application?
Used by Modern Operating systems, lets you use your mouse to click icons, buttons, and menus, and everything is clearly displayed on the screen using a combination of graphics and text.
What is a GUI, (pronounced gooey)?
The 3 Most Widely Used Operating Systems.
What are Windows, macOS, and Linux?
Name one Linux Distro.
What is Debian Linux, Gentoo Linux, Ubuntu Linux, Linux Mint, Red Hat Linux, CentOS Linux, Fedora Linux, Kali Linux, or Arch Linux
It manages the computer's memory and processes, as well as all of its software and hardware. It also allows you to communicate with the computer without knowing how to speak the computer's language.
What is an Operating System?
The boot sequence begins:
1. CPU starts up and fetches the BIOS from ROM
2. Instructions from BIOS are loaded into RAM
3. BIOS starts up the monitor and keyboard
4.
5. Operating system is fetched from secondary storage
6. Operating system is loaded into RAM
7. The BIOS hands over control to the operating system
What is BIOS checks your computer is working?
This defines which devices a computer should check for the operating system's boot files. It also specifies the order devices are checked.
What is the Boot Order?
Two common locations/devices to be listed in the Boot Order.
What are the disc drive (CD or DVD), hard drive, USB flash drive, SSDs, or Network Boot
The two main types of system software.
What are Operating Systems and Utility Software?
A device that runs an Operating System, that is not a PC, Laptop, or Smart Phone.
What is a Smart Watch (Smart Wearable), Smart TV, Smart Home Devices, IoT Devices, Etc...
The role of the Operating System - Instructions are executed by the CPU, but the operating system control which instruction are fed in to be executed.
What is Processor Management?
The role of the operating system - captures data from peripherals and provides data to the output devices to display to the user.
What is Input/Output?
The location where the BIOS is found on/in the PC.
What is as firmware on a ROM chip on the motherboard.
BIOS is a program that is made accessible to the microprocessor on an erasable programmable read-only memory (EPROM) chip
The Role of the BIOS
What is to act as a middleman between the OS and the hardware they run on?
BIOS is theoretically always the intermediary between the microprocessor/OS and I/O device control information and data flow.
After testing and ensuring boot devices are functioning, the BIOS loads the OS from the first location to the final one. (These locations are....)
What is from a hard drive/boot device into the PC's Random Access Memory (RAM)?
Name at least 4/8 Roles of an Operating System.
What are Error Handling, Program Management, Memory Management, Interaction with User, Processor Management, Input & Output, Security, File Management?
A computer program at the core of a computer's operating system and generally has complete control over everything in the system. It is the portion of the operating system code that is always resident in memory and facilitates interactions between hardware and software components.
What is a Kernel?
The BIOS's 4 Main Functions (Name 3/4)
Power-on self-test (POST). This tests the hardware of the computer before loading the OS.
Bootstrap loader. This locates the OS.
Software/drivers. This locates the software and drivers that interface with the OS once running.
(CMOS) setup. This is a configuration program that enable users to alter hardware and system settings. CMOS is the name of BIOS' non-volatile memory.
The role of the operating system - when you save data to your hard drive, the OS will find an available section of storage and send the data to be written to that location.
What is File Management?
The role of the operating system - controls where each piece of data is stored in RAM
What is Memory Management?