Top 20 Computer Hardware interview question's and answer

  Top 20 Computer Hardware interview question's and answer 

                                    20 কম্পিউটার হার্ডওয়্যার ইন্টারভিউ প্রশ্ন এবং উত্তর

                                          20 कंप्यूटर हार्डवेयर साक्षात्कार प्रश्न और उत्तर

1.What is hardware?

1. The physical components of a system which can to touched and feel is called hardware

2.What is cache memory? And its types?

1. It is small and fast memory which stores the data that is required for the processor for processing.
2.  L1, L2 &L3.

	DDR 1	DDR 2	DDR 3
VOLTAGE	2.5	1.8	1.5
PINS	184	240	240
FSB	266/333/400 MHz	533/667/800MHz	1066/1333/1600/1866MHz

3.What is the difference between core 2 duo and dual core?

DUAL CORE: separate cache memory for each core.

CORE 2 DUO: shared cache for both cores.

4.Name some processor manufactures?

Intel, AMD.

5.What is file system and what is the example for the same?

It defines the way in which files or folders are named, stored and organized. FAT (File Allocation Table), FAT32 & NTFS (New Technology File System)

6.What is the difference between FAT32 and NTFS?

FAT 32	NTFS
Size of Cluster is 4KB	Size of Cluster is 4KB
No security and quota options are available in this file system.	Security and quota options are available in this file system.
4tb(tera byte)volume size	volume size can be of 16eb(exa byte)
Max file size is 4GB	Max file 16TB minus 64KB

6.Converting  FAT to NTFS?

Conver driveletter:/fs ntfs (Example: convert c:/fs ntfs)

swer : If that PC having Windows XP Operating System
Given below are the problems
1. Select boot device in BIOS
2. If you are installed Multiple operating system, select which one you want it (that files Boot.ini)
3. ntldr misssing press ctrl+alt+del to restart
4. ntdetect.com file is missing press
5. Kernel file is missing press c+a+d to restart (ntkernol)
6. Chkdsk error
7. No media device
8. Bad RAM
9. Fatal Error (Blue Screen)
10. Once enter the OS it is showing low disk
space / low virtual memory, etc..
11. Not properly installed hardware and software drivers (see the device manager)
12. Your HDD having Bad Sectors
13. Again and again restart
14. System is hanging

7.What is boot loader?

Answer: Boot loader is called Master Boot Record (MBR), where our os is loaded.

8.What is the technical difference between Desktop Support & Help Desk?

The difference between desktop support and helpdesk are the following:

1. Desktop support is the one doing the troubleshooting on hand.
2.       Helpdesk support is the one receiving the call and troubleshoot it remotely.

9. What are the core files required to boot Windows XP?

Answer: ntldr, boot.ini, bootsect.dos, ntdetect.com, ntbootdd.sys, ntoskrnl.exe, hal.dll, system, device drivers (s.sys)

10.A user calls you they can’t login in said they have tried several times what is the best way to troubleshoot this

Answer:

1. Ask the user check username, password.
2. Check the network connectivity
3. Check the server is on / off
4. Check the system is member of domain/not. If not please connect the system to domain.

11.What do you mean by formatting and its types?

It is a process of erasing data or creating tracks and sectors and selecting the file system is called formatting.

Low level formatting and high level formatting.

Low level formatting: creating tracks and sectors is called low level formatting and it is also called as physical formatting.

High level formatting: selecting the file system is called high level formatting and it is also called as logical formatting.

12.How many USB devices can a single pc support?

127

13.ow many PCI devices can we attach to single pc?

It depends upon the mother board manufactures.

14.What do you mean by track, sector and cluster?

Concentric circles on the disk are called tracks.

Sector is the part of track and the size of the sector is 512bytes.

Cluster is a group of sectors.

15.What is the size of sector?

512 bytes

16.What is MBR and what does it contains?

MBR stands for Master Boot Record. 

First sector of the hard disk is called MBR.

It contains list of bootable files of O.S and partition information.

17.What do you mean by SMPS? What is the function of SMPS? List out the different voltages given by SMPS?

SMPS (Switch Mode Power Supply): it is used to convert AC to DC.

Blue	white	black	orange	red	yellow
-12 V	-5 V	0	+3.3 V	+5 V	+12 V

Voltage

18.List out the different connectors of SMPS and its uses?

Molex, ATX 20/24pin, Mini plug 4pin, Mini or Berg 4pin, SATA power connector.

19.What is BUS? 

BUS is the interface through which data is transferred.

20.What is FSB & BSB?

FSB (Front Side Bus): it is the path used by the processor to communicate with RAM.

BSB (Back Side Bus): it is the path between L2 cache and L3 cache 

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