Questions and Answers
What does BIOS stand for?
Basic Input/Output System
What does CMOS stand for?
Complementary Metal-Oxide Semiconductor
What is UEFI?
Unified Extensible Firmware Interface
The main functionality of the Basic Input/Output System (BIOS) is to perform the initial hardware checks after the computer is powered on and start up the operating system.
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What does POST stand for?
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Which of the following resources can be used by an Operating System (OS) to communicate with hardware? (Select 2 answers)
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What is the procedure of replacing BIOS contents sometimes referred to as?
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Why are BIOS updates performed? (Select all that apply)
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Which of the following terms refer to BIOS types that can be updated without removing the BIOS chip from a motherboard? (Select 2 answers)
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Which Microsoft Windows OS utility can be used to view basic information about the computer's BIOS?
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Power failure during a BIOS upgrade can cause irreversible damage to the computer system.
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After a normal system shutdown, when the computer is turned off, contents of the memory used to store BIOS settings are:
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What acronym refers to a series of basic hardware diagnostic tests performed by the startup BIOS after the computer is powered on?
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Where can updated information about specific parameters of a new device be stored after replacing a modular hardware component inside the computer case? (Select 2 answers)
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What is the option commonly referred to for arranging the order devices should be checked for the OS?
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In order to work, what may need to be enabled for an integrated component such as Network Interface Card (NIC) on a newly assembled computer system?
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Study Notes
BIOS Overview
- BIOS stands for Basic Input/Output System, which controls input and output operations in a computer.
- It is non-volatile firmware that performs hardware initialization during boot-up.
- Provides runtime services for operating systems and applications.
CMOS Technology
- CMOS stands for Complementary Metal-Oxide Semiconductor.
- Used in RAM chips and flash memory, allowing high-speed operation with low power consumption.
- Retains information even when the computer is powered off, thanks to battery power.
UEFI Definition
- UEFI stands for Unified Extensible Firmware Interface.
- Acts as a modern interface between motherboard firmware and the operating system.
- Enhances booting processes, manages motherboard settings, and secures the boot against unauthorized systems.
Functionality of BIOS
- The primary function of BIOS is to conduct initial hardware checks and initiate operating system startup.
Power-on Self Test (POST)
- POST is a hardware check performed by BIOS at startup that verifies the functionality of hardware components.
- Each hardware device runs diagnostics during POST as directed by the BIOS.
Communication with Hardware
- Operating systems communicate with hardware via Device Manager, device drivers, and System BIOS.
Flashing the BIOS
- The process of replacing or updating BIOS contents is referred to as "flashing the BIOS."
Reasons for BIOS Updates
- BIOS updates are necessary to repair damaged firmware, fix programming errors, and support new hardware types.
Updateable BIOS Types
- BIOS types that can be updated without removal include EEPROM and Flash Memory.
BIOS Information Utility
- MSINFO32.EXE is a utility in Microsoft Windows used to view basic BIOS information.
BIOS Upgrade Risks
- Power failure during BIOS upgrades may cause irreversible damage to the computer system.
BIOS Settings Storage
- Contents of memory storing BIOS settings are retained after a normal system shutdown.
Diagnostic Tests
- POST refers to a series of basic hardware diagnostics performed by startup BIOS.
Storing New Hardware Information
- Updated specifications of new hardware components can be stored in Flash memory and CMOS RAM.
Boot Sequence Configuration
- The boot sequence is a list in the CMOS setup utility that determines the order of secondary storage devices checked for the operating system.
Enabling Integrated Components
- Integrated components, like Network Interface Cards (NICs), may require activation in the advanced BIOS settings menu after assembly.
Virtualization Error Resolution
- If Hardware-Assisted Virtualization (HAV) is not enabled, adjustments in BIOS settings may be necessary to resolve the issue.
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Description
Test your knowledge of essential computer hardware concepts with this quiz focused on BIOS and CMOS. Understand the definitions, functionalities, and importance of these key components in computer systems.