********-------------COMPUTER & IT -------------******* - TopicsExpress



          

********-------------COMPUTER & IT -------------******* Q1.What is mainframe computer? Ans: big, powerful, expensive computers used in the background by large organizations. Q2.What is a PC? Ans: PC- personal computer It is a micro- computer. It is a general purpose computer whose size, capabilities and price is limited which make it useful for individuals. Q3.What is Mac? Ans: The Apple Mac is a computer. It uses different operating system. It requires special version of application program. Q4.What is a networked computer? Ans: A network computer allows to connect two or more computers together. Q5.What is laptop? Ans: Laptop a small portable which run on batteries as well as main power Q6.What is PDA? Ans: Personal Digital Assistant It is a small size computer/device. It uses special pen rather than keyboard. It is used for storing and retrieving information. Q7.What are input devices? Ans: Allows to input information to the computer. Q8.What are output devices? Ans: Allows to output information from computer. Q9.What is peripheral device? Ans: Device which can be attached to computer it’s called peripheral Device. Q10.Write some factors which impact on a computer performance? Ans: i. CPU speed ii. RAM size iii. Graphics card processor and memory iv. Number of applications running. Q11.What is computer memory? Ans: Computer memories are the devices. They store information temporarily/virtually or permanently/physically. Q12.What is ROM? Ans: ROM- Read only memory It is a memory. It holds software which can be read but not written to. It contains software which first starts the computer & load the operating system to the ram. Q13.What is video(graphics) memory? Ans: It is a memory. It is used to store picture which is displayed on monitor. Q14.What is an operating system? Ans: Operating system is a special software its called system software also. It loads automatically when we press power button to run computer for using advanced features of Operating system. Q15.What is an application program? Ans: Application program is a software which is used by user to perform their daily task. It is operated by operating system. Q16.What is LAN? Ans: LAN – local area network PCs are connected together using cables or wireless. It is used in short area. Q17.What is WAN? Ans: WAN – wide area network. Allows connecting to other computers over a wider area. Q18.What is WLAN? Ans: WLAN – wireless local area network. Allows to connect two or more computer within LAN without cables. Q19.What does client/server mean? Ans: Resources are kept centrally on the server and used locally by the client. Q20.What is difference between internet and intranet? Ans: Internet is a global network of interconnected networks. Intranet is network which can be accessed by authorized members of an organization. Q21. What is the difference between intranet and extranet? Ans: An extranet is an intranet which is partially accessible to authorized outsiders, Who have been issued a password. An intranet is normally only accessible by members of the same company or organization. Q22. What is E-commerce? What is its advantages or disadvantage? Ans: Buying or selling via the internet. Advantage: i. Service available 24/7 ii. Detailed product description iii. Large stock range iv. Equal delivery town or country. v. Returning Facility of Defective Goods. Disadvantages: i. Possible credit card fraud. ii. Cannot talk to real person iii. Website may not be genuine. iv. How are you covered when you purchase goods from another country? Q23.what is E-banking? What is its advantages or disadvantage? Ans: Managing money online instead of heaving to go to the local branch. Advantage: 1. Bank cost can be reduced 2. 24 – hour access to banking service 3. Moving money from place to another place. Disadvantages: 1. No physical person to make complain. 2. Poor security of online system may loose user bank balance. 3. Create many jobless in the Banking sector. Q24.what are the advantages of E-government? Ans: i. Census ii. vehicle registration. iv. Revenue collection v. Electronic voting Q25.what is E-learning? What is its advantages or disadvantage? Ans: Learning via internet Advantages: i. Distance learning system. ii. Can use internet as homework resource iii. Cheaper iv. Learning facilities is available 24/7 Disadvantages: i. May be no opportunity to ask question to a real person. ii. Connection may temporarily fail. iii. Download speed may be too slow for some forms of e-learning. Q26.what is tele-working? What is its advantages or disadvantage? Ans: People working at home connected to the rest of the organization via computer network. [Bhuiyan IT Ltd] Page 2 of 20 Advantages: i. Reduced or zero commuting time ii. Greater ability to focus on task. iii. Flexible schedules. iv. Reduced office desk space requirements. Disadvantages: i. Lack of human contact ii. Harmful for self-discipline. iii. Negative impact on teamwork, iv. Possible Employee Exploitation. Q27.What are files? What are the types of file? Ans: Files are container of data to store inside hard disk. There are two types of file: i. Program file: program files are managed by software or program like MS office ii. Data file: data files are managed by OS. Q28.What are folders? Ans: Files are stored on a disk in folders. Folder is the container of files. Q29.What is drive? Ans: Logical pointer of different physical devices to access. Q30.What is windows explorer? Ans: permits to explore all aspects of system using hierarchical view Q31.why view icon is used in windows explorer? Ans: Allows to set view to display files. Q32.Why details menu is used in windows explorer? Ans: display all files and associated file details such as name, size, type and last accessed date in a single column. Q33.what is the good practice when naming files or folders? Ans: use meaningful names for files and folders which should be related with the data of file Q34.which key is used to rename folder Ans: F2 Q35.when a folder is deleted then where it moves? Ans: Recycle Bin Q36.What is Hardware? Ans: A hardware is a physical part of a computer which can be touched physically. The example of a hardware is a key board, a mouse, Monitor etc. Q37. What are the parts of a computer? Ans: The parts of a computer are the elements/ component by which the computer made up of. The following are the main parts of a computer. • Central Processing Unit (CPU) • Types of Memory • The Hard Disk • The Mother Board • Input Output Devices There are also some invisible parts of a computer which can’t be seen but essential to run a computer. Different types of OS and Application software are such kind of computer part. Q38.What do you understand by the term computer performance? Ans: The term Computer performance means that how fast the computer will run. Its Totally depends on the compatibility between different parts of a computer. In other words when the CPU speed, RAM size, Graphics Card processor, and the Memory have similar configuration then the user can get the best output from the Computer. So we can say that computer performance is the condition how fast or slow the computer works. Q39.What is CPU speed? Ans: CPU speed is the measurement of the data processing capacity of the CPU. CPU speed is measured in Megahertz of Gigahertz. The higher the value the faster the CPU will process data. Q40.What is Computer Memory? Ans: Computer Memory is a part of Computer which can permanently or temporarily store data. For example Hard disk, RAM, ROM, ROM-BIOS etc are different types of computer memory. Q41.Write the Name of the Input Devices. Ans: They are as follows: • Keyboard • Mouse • Scanner • Microphone • Webcam • Digital Camera • Tracker Ball • Touch Pad • Joy sticks etc Q42.Write the Name of the Output Devices Ans: They are as follows: • Traditional computer Monitor • Projection devices • Speakers and Headphones • Printer • Speech Synthesizer Q43.Write the name of some input output device. Ans: The Name of some Input Output Devices are: 1) Modem, 2) Touch Screen Device Q44.What are the types of Network? Ans: The types of Network are as follows: • LAN (Local Area Network) • WLAN (Wireless Local Area Network) • WAN (Wide Area Network) • Client/Server Network • Internet • Intranet • Extranet Q45.How many options are there to connect to internet? Ans: There are five options to connect to the internet. They are as follows • Phone Line • Cable • Mobile Phone • Wireless Hot Spots • Satellite. Q46.What are the Characteristics of the broad band internet Connection? Ans: There are 4 Characteristics of a Broadband internet connections. • Always On: Unlike a dial up connection a broadband connection is always on. • Flat Fee payments: Unlike a dial up connection where w should pay for every minute connected a broadband connection is paid for via a flat monthly fee. • High Speed Access: With broadband the more we pay the higher the connection speed. Q47.What is e-mail Ans: E-mail refers to Electronic mail. Electronic mail is a program which allow us to send text message along with attached files to the internet connected people anywhere in the world. Q48.What the difference between digital and analog technology. Ans: The key difference between digital and Analog technologies is Analog technologies record wave forms as they are, while digital technologies convert analog wave forms into sets of numbers, recording the number instead. When play back the numbers are converted into a voltage stream that approximates the original analog wave. Q49.How can you save a document? Ans: To save a document in MS-word we do: Office button ? Save ? [Bhuiyan IT Ltd] Page 3 of 20 set file name and location ? save Q50.What do you mean by IT? Ans: IT stands for information Technology. Q51.Write down the different type of computer and describe shortly. Ans: According to the usage and working capacity computers can be divided into three different types: Such as • Super Computer • Mini Computer or Mainframe Computer • Micro Computer or Personal Computer Super Computer: Super computers are very powerful and heavy duty computers which generally use in scientific, medical or astronomical works. Mini Computer or Mainframe Computer: A mainframe or mini computer is designed specially for used by many people usually at the same time or large data processing system which require specialized staff to operate to operate effectively. Micro Computer/Personal Computer : A personal computer(PC) is any general purpose computer whose size capability and price make it useful for individuals. The great facilities of PCs are it can be operated by any end user who may not have specialized computing skills or knowledge. Laptop, etc are such kind of computer. Q52.What is a Network Computer? Ans: Generally a Network Computer is a diskless desktop computer designed by Oracle Corporation which can be connected to a LAN, WAN, WLAN or any kind of Network. In that case any general purpose computer can be called as Network Computer. Q53.What do you understand by the system Unit and system board/main board/mother board? Ans: System Unit: System Unit refers to the CPU box or Casing where all the input device, output device, power supply box storage units and processor are embedded together. System Board: System board/Main board/Mother board is the unit where every parts of a computer including CPU, RAM, ROM-BIOS, Graphics Unit, Sound Card etc. are embedded. Q54.Define CPU, RAM, ROM, ROM-BIOS and Flash BIOS. Ans: CPU: CPU stands for central processing unit. It does all kind of logical and processing works. Intel processor, AMD processor etc are available in the market. Computer performance mainly depends on CPU’s speed which is measured in Megahertz or Gigahertz. RAM: RAM stands for Random Access Memory. It is a temporary memory of computer which disappear when computer is being shut down. Operating system and other programs are loaded into the RAM as we switch on the computer or open them. RAM speed affects/increase the performance of the computer which is measured in Megabytes or Gigabytes. ROM: Rom stands for Read only Memory. ROM is a permanent type of memory which can be read but not written to and can’t be edited or deleted. ROM-BIOS: ROM-BIOS stands for Read Only Memory Basic Input Output System. It contains the Basic instructions for the computer to run the operating system which is constant a software. Q55.What is information Security? Ans: Information security means protecting information and Information systems from unauthorized access, use, disclosure, disruption, modification, perusal, inspection, recording or destruction.(Admin-jalal uddin).
Posted on: Sun, 23 Nov 2014 19:37:35 +0000

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