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What is Hardware ? : The physical parts of the computer that we can see and touch are called “Hardware”. For example Keyboard, Mouse, Monitor, Printer, and Motherboard etc. All computers are hardware. Actually hardware is a collective term, which is used to describe computer parts. Hardware is usually directed by software to execute any commands or instructions.
Hardware => That is, the devices that make up a computer. real parts you can see. Computer does not have any existence of its own. It needs some accessories and programs to do its work. These tools and programs only make the computer a real computer, by combining all these accessories, a computer term is formed.
Computer Hardware & Software MCQ Questions and Answers
Q Lesion printer is measured as the number of _.
Ans: DPI
It can be said that resolution (in terms of print) is a measure of the number of dots a device can put into one square inch of page space.
The higher the dot density, the higher the resolution of the print or scan.
A 600 DPI printer is a printer that prints at 600 x 600 per square inch, or 360,000 dots per inch.
Increasing the DPI will make the printed image smaller while decreasing the DPI will make the printed image larger.
Q The primary purpose of software is to convert data into….
Ans information
Q What are the three main parts of the processor ?
Ans: ALU, Control Unit and Registers
Q What is the name of programs that control the computer system ?
Ans: Software
Q Storage which stores or retains data after power off is called-
Ans Non-volatile storage
Q What type of software is an operating system an example of ?
Ans: System Software
Q Cache memory is
(a) Smaller and faster than main storage
(b) Bigger and slower than main storage
(c) Smaller but slower than main memory
(d) Bigger and faster than main memory
Ans: (a) Smaller and faster than main storage
Q What is full form of OCR ?
Ans: Optical CPU Recognition
Q Which of the following is not a search engine ?
(A) Bing
(B) Yahoo
(C) Google
(D) Chrome
Ans. (D) Chrome
Q Antivirus helps to clean which of the following ?
- Virus
- Worms
- fan
(A) 1 and 2
(B) 2 and 3
(C) 1 and 3
(D) only
Ans. (A) 1 and 2
Q Magnetic tape is a. ?
(a) Random access medium
(b) A parallel access medium
(c) Serial access medium
(d) All of the
Ans Serial access medium
Q EEPROM stands for
a) Easily Erasable Programmable Read Only Memory
b) Electronic Erasable Programmable Read Only Memory
c) Electrically Erasable Programmable Read Only Memory
d) None of the above
Ans Electrically Erasable Programmable Read Only Memory
Q : Which device is used to back up the data ?
a) Floppy Disk
b) Tape
c) Network Drive.
d) Online Cloud Drive Storage
e) All of the above
Ans: All of the above
Q Which of the following facts is true about cloud computing ?
a) It is a type of Internet-based computing that provides shared computer processing resources and data to computers and other devices on demand.
b) It is a set of services provided by Cloud Corporation
c) It is a set of internet based services of an application installed in your system.
d) Neither of the above
Ans It is a type of Internet-based computing that provides shared computer processing resources and data to computers and other devices on demand.
Q Which of the following is not a cloud based service ?
a) information as a service
b) platform as a service
c) infrastructure as a service
d) all of these
Note:
Information Edge as a Service is not a cloud-based service.
Main Key Points
Cloud-based services provide information technology (IT) as a service over the Internet or a dedicated network, with delivery on demand and payment on a usage basis.
Cloud based services range from complete applications and development platforms to servers, storage and virtual desktops.
Cloud services are infrastructure platforms or software hosted by third-party providers and made available to users via the Internet.
Important Points
Common cloud-based services are-
Software-as-a-Service (SaaS)
Software is installed and managed on user computers versus on computers owned and managed by the SaaS provider.
The software is accessed over the public Internet and is typically offered on a monthly or annual subscription.
Infrastructure-as-a-Service (IaaS)
Compute, storage, networking, and other elements (cloud security, appliances) are provided by the IaaS provider through the public Internet, VPN, or dedicated network connection.
Users own and manage the operating systems, applications and information running on the infrastructure and pay by use.
Platform-as-a-Service (PaaS)
All the software and hardware required to build and operate cloud based applications is provided by the PaaS provider through public internet, VPN or dedicated network connection.
Users pay for use of the platform and control how applications are used throughout their lifecycle.
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