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Basic Input Output System Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM COMPUTER HARDWARE INTERVIEW QUESTIONS BASIC INPUT OUTPUT SYSTEM INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

Basic Input Output System Interview Questions & Answers - Learning Mode

BIOS (basic input/output system) is the program a personal computer's microprocessor uses to get the computer system started after you turn it on. It also manages data flow between the computer's operating system and attached devices such as the hard disk, video adapter, keyboard, mouse and printer. The BIOS, an acronym for Basic Input/Output System and also known as the System BIOS, ROM BIOS or PC BIOS) is a type of firmware used to perform hardware initialization during the booting process (power-on startup) on IBM PC compatible computers, and to provide runtime services for operating systems and programs.

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Basic Input Output System Interview Questions & Answers - Learning Mode
Try Basic Input Output System Interview Questions & Answers - Exam Mode
Question:
can u send me some questions on general computer concepts because i am preparing for keane software there they are asking questions on computers


Answer: Subroutine are the part of executing processes(like any process can call a subroutine for achieve task),while the interrupt subroutine never be the part.interrupt subroutine are subroutine that are external to a process.
Source: CoolInterview.com
Question: Convert 65(Hex) to Binary.

Answer: 65 to decimal
65/16=4
remainder=1

==41 decimal
decimal to binary
101001
Source: CoolInterview.com
Question: What?s the difference between Write-Through and Write-Back Caches? Explain advantages and disadvantages of each.

Answer: The comparison can be made out of two factors

1) Performance and
2) Integrity of Data

Write through is better in integrity as it will flush for each writes.
Write back holds up the write till the same cache line has to be used up for a read, which question the data integrity when multiple processors access the same region of data using its own internal cache.

Write Back - gives a good performance, as it save many memory write cycles /write.

Write Through - Doesn Source: CoolInterview.com
Question: How to get into your computer BIOS?

Answer: To change BIOS settings, you'll need to get into the computer BIOS first. This is done via a certain key or combination of keys

Most of the time during boot-up the key (combination) will be shown. If it is not, then you could try the following key combinations:

* Del
* F1
* F2
* F10
* Ins
* Esc
* Ctrl+Alt+Esc
* Ctrl+Alt+Enter
* Ctrl+Alt+Ins after Ctrl+Alt+Del
* Ctrl+Ins
* Ctrl+Alt+S
* Ctrl+S
Source: CoolInterview.com
Question: How can I determine what BIOS is on my PC and if there is an update?

Answer: The easiest way to determine this is to run the eSupport BIOS Agent scan. It'll tell you which motherboard you have and if there is any update available.

An alternative manual way is to identify your motherboard manually by using the Award or AMI Numbers page to compare your BIOS id string to the ones in our database. Source: CoolInterview.com
Question: What are the five stages in a DLX pipeline?

Answer: The instruction sets can be differentiated by

* Operand storage in the CPU
* Number of explicit operands per instruction
* Operand location
* Operations
* Type and size of operands
Source: CoolInterview.com
Question: What is a (Flash) BIOS ?

Answer: Pronounced "bye-ose," BIOS is an acronym for basic input/output system. The BIOS is built-in software that determines what a computer can do without accessing programs from a disk. On PCs, the BIOS contains all the code required to control the keyboard, display screen, disk drives, serial communications, and a number of miscellaneous functions. Source: CoolInterview.com
Question: What is a Snooping cache?

Answer: Snooping is the process where the individual caches monitor address lines for accesses to memory locations that they have cached. When a write operation is observed to a location that a cache has a copy of, the cache controller invalidates its own copy of the snooped memory location.

Snarfing is where a cache controller watches both address and data in an attempt to update its own copy of a memory location when a second master modifies a location in main memory
Source: CoolInterview.com
Question: How to generate a boot disk for updating a BIOS ?

Answer: Follow this handy guide to generate a clean boot disk to update your BIOS:

1. Save DRDFlash.exe to your hard drive
2. Insert a blank floppy and double click the drdflash.exe file to create the boot disk.
3. Follow the onscreen instructions
4. Copy the BIOS Update and BIOS Flasher to the boot disk
5. Restart your PC and boot from the floppy.
6. Use the flasher to install the BIOS update
Source: CoolInterview.com
Question: what is the difference between interrupt service routine and subroutine ?


Answer: Subroutine are the part of executing processes(like any process can call a subroutine for achieve task),while the interrupt subroutine never be the part.interrupt subroutine are subroutine that are external to a process.
Source: CoolInterview.com
Question: How can you clear your BIOS with the DOS DEBUG command ?

Answer: 1.for AMI and Award BIOSs:

C:DEBUG (at a clear DOS prompt, don't do this in DOS-box in Windows)
-O 70 17
-O 71 17
Q

2.for Phoenix BIOSs:

C:DEBUG (at a clear DOS prompt, don't do this in DOS-box in Windows)
-O 70 FF
-O 71 17
Q Source: CoolInterview.com

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