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Correct option is D) on

Correct option is B) did

Correct option is D) on

Correct option is D) How

Correct option is C) Do

Correct option is B) till

(a) assimilate / absorb

(b) bear

(c) irresponsible

(d) Mysterious

Correct option is B) Where

Correct option is D) How

Correct option is A) Who

1 preferable

2. antique

3. immodest

4. confuse

1. She is married to her cousin.

2. The man on seeing what his friend had done to him started to grumble.

3. She was cured of typhoid.

4. We may have to put up with many inconveniences In our journey towards our destination.

5. The cashier was accused of misappropriation of funds.

The roll numbers are being called by the teacher

Correct option is E) kill time

Correct option is A) through

Where did he confess his crime?

Correct option is B) license

1. Do not be rude to people.

2. She is married to her cousin.

3. The man on seeing what his friend had done to him started to grumble.

4. She was cured of typhoid.

5. We may have to put up with many inconveniences In our journey towards our destination.

6. The cashier was accused of misappropriation of funds.

1. He confessed the crime. OR He confessed to the crime.

2. If you do not show it to me, I will shoot you down.

3. The course begins on 1st July.

4. Why don’t you write in ink?

5. Do not be rude to people.

1. I am blessed with good health.

2. Mr. Kumar presided over the meeting.

3. Can you think of anyone who can get the job done?

4. The baby was dressed in blue.

5. You must stand by me in times of difficulties.

Correct option is C) I’m sorry to hear that but I’m sure he’ll be all right.

Correct option is C) is going to visit

1. l had to reach the station by 10-00 am.

2. I prefer coffee to tea.

3. He shot at the tiger, but missed.

4. He accompanied his friends.

5. We walked ten kms on foot

Correct option is A) will have

Correct option is A) broke out

Correct option is D) will get

Correct option is C) out

Correct option is B) will put

Correct option is B) will put

Correct option is A) for putting

1. It is a high speed memory placed in between the CPU and RAM. CPU is a high speed memory compared to RAM. There is a speed mismatch between the CPU and RAM to resolve this problem a high speed memory called cache memory is placed in between the CPU and RAM 

2. QR code and Bar Code

Correct option is D) whose

Correct option is B) lorry

It is not true. A compiler is not a hardware but it is a software. A compiler is a collection of programs that translates program written in HLL into machine language

Primary memory has a limited storage capacity and it is not permanent that is why to store large volume of data permanently secondary memory or storage devices are used. They are of many types and they vary in the capacity of storage, speed of data access and media of storage. Nowadays magnetic disks and optical disks are commonly used. 

1. Magnetic Disk: 

Magnetic disk allows the storage and retrieval for contents of the disk from anywhere at a moderate speed. Magnetic Disks available in various size and storage capacity but the storage media and data access mechanism are similar. 

The storage media is circular platters or disks coated with magnetic material. It consists of a spindle capable of rotating with the help of an electrical motor and a read/write head. 

(a) Floppy disk: Floppy means flexible or soft, it uses flexible disk. Its storage capacity is 1,44MB and slower in data transfer rate. 

(b) Hard Disk: Instead of flexible or soft disk it uses rigid material hence the name hard disk. Its storage capacity and data transfer rate are high and low access time. These are more lasting and less error prone. The accessing mechanism and storage media are combined together in a single unit and connect to the mother board via cable. 

Therefore we call it as hard disk drive (HDD). It contains one or more rigid platters coated both sides with a special magnetic material and a spindle. Datas are recorded on either surface of the disk except the outer side of last and first disk. Each surface will have one or more read/write heads (fixed head or movable head). 

The spindle is attached to a motor that rotates at high speed typically 7200 rotation per minute (rpm). A floppy disk rotates only at 300 rpm. 

2. Optical Disk: The high power laser uses a concentrated, narrow beam of light, which is focuses and directed with lenses, prisms and mirrors for recording data. 

The optical disks are given below: 

(a) Compact Disk Read Only Memory (CDROM): The data in CDROM is imprinted.by the manufacturers. The user cannot erase or write on the disk but user can only read its contents. CDROM is written in a single continuous spiral unlike magnetic disks that uses concentric circles. Its storage capacity is 700MB. 

(b) Erasable Optical Disk: The disadvantage of CDROM is that we cannot change or erase the contents. But erasable disks can be changed and erased. 

(c) Digital Versatile Disk: It is capable of storing up to 4.7GB and more faster. 

(d) Blu-ray Disc: It is used to read and write High Definition video data as well as to store very huge amount of data. While Cd and DVD uses red laser to read and write but it uses Blue Violet laser, hence the name Blu ray disc. The blue-violet laser has shorter wavelength than a red laser so it can pack more data tightly.

3. Semiconductor storage (Flash memory): It uses EEPROM chips. It is faster and long lasting. 

1. USB flash drive: It is also called thumb drive or pen drive. Its capacity varies from 2 GB to 32 GB. 

2. Flash memory cards: It is used in Camera, Mobile phones, tablets etc to store all types of data.

(b) Spreadsheet

Correct option is D) who

Correct option is D) some

It is not true. A compiler is not a hardware but it is a software. A compiler is a collection of programs that translates program written in HLL into machine language.

We know that a scanner is a hardware but a virus scanner is not a hardware. It is a program. That is a virus scanner is an antivirus software. That scans your disk (HDD, CD, DVD, Pen Drive) for viruses and removes them (if it can), if any virus is found.

Correct option is C) is

Correct option is C) needn’t

Correct option is C) isn’ t given

Correct option is A) was assembled

Printer: There are two types of printers impact and non-impact printers. Printers are used to produce hard copy. 

Impact Printers: There is a mechanical contact between print head and the paper. 

1. Dot Matrix Printer: Here characters are formed by using dots. The printing head contains a vertical array of pins. The letters are formed by using 5 dot rows and 7 dot columns. Such a pattern is called 5 × 7 matrix. 

This head moves across the paper, the selected pins fire against an inked ribbon to form characters by dot. They are capable of faster printing, but their quality is not good.

2. Non-impact Printers: 

There is no mechanical contact between print head and paper so carbon copies cannot be possible to take. They are inkjet, laser, thermal printers etc.

(a) Inkjet Printer: 

It works in the same fashion as dot matrix printers, but the dots are formed with tiny droplets of ink to be fired from a bottle through a nozzle. These droplets are deflected by an electric field using horizontal and vertical deflection plates to form characters and images.

It is possible to generate colour output. They produce less noise and produce high quality printing output. The printing cost is higher. Here liquid ink is used. 

(b) Laser Printer: 

It uses photo copying technology. Here instead of liquid ink dry ink powder called toner is used. A drum coated with positively charged photo conductive material is scanned by a laser beam. The positive charges that are illuminated by the beam are dissipated. The drum is then rolled through a reservoir of negatively charged toner which is picked up by the charged portions of the drum.

It adheres to the positive charges and hence creating a page image on the drum. Monochrome laser printer uses a single toner whereas the colour, laser printer uses four toners. Its print quality is good less noise and printing cost is higher.

(c) Thermal Printers: 

It is same as dot matrix printer but it needs heat sensitive paper. It produces images by pushing electrically heated pins to the special paper. It does not make an impact on the paper so we cannot produce carbon copies. It produce less noise, low quality print and inexpensive. It is used in fax machine.

3. Plotter: 

A plotter is a device that draws pictures or diagrams on paper based on commands from a computer. Plotters draw lines using a pen. Pen plotters generally use drum or flat bed paper holders. In a drum plotter the paper is mounted on the surface of a drum. 

Here the paper is rotated. But in a flatbed plotter the paper does not move and the pen holding mechanism provides the motion that draws pictures. Plotters are used in engineering applications where precision is needed.

4. Three Dimensional (3D) printer: 

This device is used to print 3D objects.

The correct answer is Operating System.

• Windows 10 is an operating system.
• Windows 10 is the successor to Windows 8.1.
• One of the primary aims of Windows 10 is to unify the Windows experience across multiple devices, such as desktop computers, tablets, and smartphones.
• In 1985,  Microsoft’s Windows operating system was first introduced.
• Microsoft introduced Windows as a graphical operating system shell for MS-DOS in response to the growing interest in graphical user interfaces.
• As of October 2021, the most recent version of Windows for PCs and tablets is Windows 11, version 21H2.

• An operating system is a program that controls the execution of application programs and acts as an interface between the user of a computer and the computer hardware.
• Alternatively, it is software that performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers. 
• Some of the commonly used Operating Systems-
  • Microsoft Windows
  • Apple macOS
  • Linux
  • Android
  • Apple's iOS
  • UNIX

The requirements are computer, scanner, printer and software.

The correct answer is Debugging.

• In computer programming and software development, debugging is the process of finding and resolving bugs within computer programs, software, or systems.
• The basic steps in debugging are:
  • Recognize that a bug exists.
  • Isolate the source of the bug.
  • Identify the cause of the bug.
  • Determine a fix for the bug.
  • Apply the fix and test it.
• Piggybacking refers to when a person tags along with another person who is authorized to gain entry into a restricted area or pass a certain checkpoint.
• Cracking means trying to get into computer systems in order to steal, corrupt, or illegitimately view data. 
• A computer virus is a malicious software program loaded onto a user's computer without the user's knowledge and performs malicious actions.  

First he has to install the Microsoft Windows XP because it is the OS, it makes the computer to work other programmes. After that only he can install . MS Word it is a package.

The correct answer is Experience.

• XP in Windows XP stands for eXPerience.
• Windows XP is an operating system produced by Microsoft as part of the Windows NT family of operating systems.
• It was the successor to both Windows 2000 for professional users and Windows Me for home users.
• It was released to manufacturing on August 24, 2001, and broadly released for retail sale on October 25, 2001. 
• The Start menu received its first major overhaul in XP, switching to a two-column layout with the ability to list, pin, and display frequently used applications.

• CEO of Microsoft is Satya Nadela.
• The co-founder of Microsoft is Bill Gates and Paul Allen.
• The first version of Windows, released in 1985, was simply a GUI offered as an extension of Microsoft's existing disk operating system, or MS-DOS.
• Windows 2.0 is an obsoleted 16-bit Microsoft Windows GUI-based operating environment.