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Computer Repair and Maintenance 2074

Group - "A" Attempt any ten questions: 1. Write the full form of SMPS. The full form of SMPS is Switch Mode Power Supply. 2. What is UPS? UPS is an Uninterruptible Power Supply that protects computer from uncertain shutdown during the electricity blackout. 3. Write the full form of PCI. The full form of PCI is Peripheral Component Interconnect. 4. What is hard disk? Hard Disk is a secondary storage device which stores data and all the necessary programs of the computer system and user. 5. What is the voltage of Vss of processor? Vdd is normally was used to be 5V but nowadays is 3.3V or even lower 1.8V or 1.2V. Vss is referred to be zero volts. 6. What is interface? Interface is the slot or jack through which various resources can be interconnected for data and signal transmission. 7. Write any two names of antivirus? They are Quick Heal Antivirus and Kaspersky Antivirus. 8. What is backup? The process of keeping a duplicate copy of data that helps when the original data gets damaged is known as backup. 9. What is virus scanning? The process of searching programs which may produce some damage to the computer resources is known as scanning. 10. Define 'cooling'? The process of eliminating large amount of heat, which is created while a computer system is running is called cooling. 11. What is 'Boot time error message'? Boot Time Error Message refers to the warning or message simply denoting the abnormal functionality of computer or missing of any important peripherals during the starting up of a computer. 12. What is troubleshooting specific component? Troubleshooting specific component means dealing with the problem and resolving the issues in that specific component. 13. What is configuration? The definition or the structural representation of the working process of computer or its resources is known as configuration. Group - B Attempt any five questions only. 14. List the types of monitors available in the market. The types of monitor available in the market are as listed below: a. CRT (Cathode Ray Tube) Monitor b. LCD (Liquid Crystal Display) Monitor c. LED (Light Emitting Diode) Monitor d. Plasma Monitor (bigger sized monitors). 15. Write any two names of power supply. The two names of power supply are as listed below: a. AC (Alternating Current) : It has a fluctuating value and is normally used by heavy mechanical machines. b. DC (Direct Current): It has a discrete value i.e. it is not fluctuating. It remains constant throughout the power supply. It is generally used by almost all the electronic devices being used today. 16. Differentiate between CD-R and CD-RW. CD-R: a. It stands for Compact Disk Recordable. b. It can record data only once and read as much time as required. c. If the CD-R is not filled completely once while recording, the remaining part gets unusable anymore. CD-RW: a. It stands for Compact Disk Re-Writable. b. It can record and read the data as much time as required. c. The remaining empty part of CD-RW can be reused next time while recording. 17. Write two symptoms of virus infection. The symptoms of virus infection are as follows: a. Computer responds slowly to the given instructions. b. Unwanted applications get executed automatically. c. Various unknown files and folders get created. d. The availability of the computer resources get decreased that may finally result to the crashing of system. 18. What is motherboard? List any two types of motherboard. Motherboard is such a PCB (Printed Circuit Board) that provides an interface to connect various resources together and communicate with each other and also the power supply is controlled from SMPS through it. Any two types of motherboard are as follows: a. Full AT motherboard b. ATX motherboard 19. What may be the cause that your system produces continuous beep sound? Any system produces continuous beep sound in case of any hardware fault or damage. Specially, this happens with the memory related problems i.e. fault in Random Access Memory. 20. What do you mean by system case? Write its types. System case is defined as such an enclosure that contains most of the components of a computer system i.e. motherboard, SMPS, Hard Disk, RAM, Microprocessor, etc. excluding external peripherals like keyboard, mouse, monitor, etc. The different types of system case are as listed below: a. Full Tower Case b. Mid Tower Case c. Mini Tower Case Group - C Attempt any five questions: 21. What is system BIOS? Write the function of BIOS and explain them. System BIOS refers to Basic Input Output System that performs the operation of handling various input and output devices. The function of BIOS is to check the presence of various input and output devices required to run a computer system. This process mainly starts at the time of booting. Its main goal is to check either the computer has all the necessary input and output devices or not. 22. Write about the construction and operation of HDD. Describe cylinder, sector and track also. HDD refers to Hard Disk Drive. It consists of a spindle that holds flat circular disks, called platters which hold the recorded data. The platters are made from non-magnetic material usually aluminum alloy, glass or ceramic. The tracks are the concentric circles around the disk and the sectors are segments within each circle. The smallest part of a storage location is called sector. The combination of various such sectors make a track. Similarly, the combination of various tracks together is known as a cylinder. 23. Why backup scheduling is needed to computer? Which device and media do you use for backup? Explain any one. Backup simply refers to the duplication of data for future uses. It must be scheduled so that the changes occurred in the data from time to time gets refreshed and re-arranged automatically so that the chances of losing data gets reduced even if the system gets damaged. We can use various devices and media such as any other partition of the same hard disk but it not efficient because the damage of the hard disk damages all the partitions. Hence the devices to be used for data backup are any external or secondary hard disk or pen drives or flash drives so that it can easily be used to recover the data in case of any system damage. 24. Write the causes and solution that your system could not recognize newly purchased scanner. A system could not recognize a newly purchased scanner because it may not be installed into that system i.e. the device driver of the scanner might not be present in the system because of which the computer can not recognize the device about what it is and how to work along with it. So, the only solution to such problem is either to install the device driver that comes with the newly purchased scanner or using windows updates to check if the operating system can automatically recognize and install it. 25. What may be the causes of monitor failure? Write down the appropriate solution. The monitor mainly operates upon two cables: power cable and a video cable. The possible causes of monitor failure may be lack of electricity supply to the monitor or failure in the video cable that is connected to the motherboard. Its appropriate solution is to check either the monitor blinks first or not because it confirms the power cable and the second one is then to check the video cable either it is disconnected or it is damaged. After analyzing the problem, if the monitor does not get power supply, then the power cable needs to be replaced or if the video cable is not responding, it needs to be replaced rather than getting repaired. 26. Write the causes and solution of system slowdown. Some of the causes of system slowdown are as listed below: a. Fragmentation of data may be high. b. Various unwanted applications may be installed. c. Various ad supporting programs installed while using internet may also have slowed down the computer. d. Installing games from game disk may contain various virus that may slow down the computer. Some of the solutions of the system slowdown are as listed below: a. Disk defragmentation should be performed time to time. b. Avoid using pirated software. c. Use antivirus i.e. paid version. d. Update the virus definition of antivirus time to time. e. Check for windows update and uninstall the unwanted applications from the computer. Read the full article