Please keep at least one language enabled. || కనీసం ఒక భాషను ఎంచుకోండి.
Question 1
ప్రశ్న 1
Which of the following best describes the primary role of a computer keyboard?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A keyboard is an input device used to enter alphanumeric data, commands and control information.
• It sends key-press information to the computer for processing.
• Displaying and printing information are output functions, while permanent storage is performed by storage devices.
• It sends key-press information to the computer for processing.
• Displaying and printing information are output functions, while permanent storage is performed by storage devices.
వివరణ:
Question 2
ప్రశ్న 2
Which key is primarily used to remove the character immediately to the left of the insertion point in a text-editing environment?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Backspace normally removes the character immediately before, or to the left of, the insertion point.
• Delete commonly removes a selected item or the character to the right of the insertion point in text-editing contexts.
• Insert and Esc perform different control functions.
• Delete commonly removes a selected item or the character to the right of the insertion point in text-editing contexts.
• Insert and Esc perform different control functions.
వివరణ:
Question 3
ప్రశ్న 3
Which of the following keys is classified as a toggle key because pressing it changes a keyboard state that remains active until changed again?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Caps Lock toggles capitalization mode on or off and remains in that state until pressed again.
• Num Lock and Scroll Lock are other traditional examples of toggle keys.
• Shift, Ctrl and Alt are modifier keys that normally affect another key pressed with them.
• Num Lock and Scroll Lock are other traditional examples of toggle keys.
• Shift, Ctrl and Alt are modifier keys that normally affect another key pressed with them.
వివరణ:
Question 4
ప్రశ్న 4
Which keyboard key is normally used to move the input focus to the next field or control in many forms and dialog boxes?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Tab is commonly used to advance the focus from one field or control to the next.
• Shift+Tab commonly moves the focus in the reverse direction.
• Esc and Caps Lock do not normally provide sequential field navigation.
• Shift+Tab commonly moves the focus in the reverse direction.
• Esc and Caps Lock do not normally provide sequential field navigation.
వివరణ:
Question 5
ప్రశ్న 5
Which statement correctly distinguishes the Delete key from the Backspace key in normal text editing?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• In standard text-editing behaviour, Backspace acts toward the left of the insertion point.
• Delete commonly removes the character at or to the right of the insertion point, or removes selected content.
• Application behaviour can vary, but this is the normal distinction tested in computer-fundamentals examinations.
• Delete commonly removes the character at or to the right of the insertion point, or removes selected content.
• Application behaviour can vary, but this is the normal distinction tested in computer-fundamentals examinations.
వివరణ:
Question 6
ప్రశ్న 6
Which of the following is primarily a modifier key on a standard keyboard?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Shift is a modifier key because it changes the effect of another key pressed together with it.
• Ctrl and Alt are also common modifier keys.
• Enter, Backspace and Home perform direct command or navigation functions rather than primarily modifying another key.
• Ctrl and Alt are also common modifier keys.
• Enter, Backspace and Home perform direct command or navigation functions rather than primarily modifying another key.
వివరణ:
Question 7
ప్రశ్న 7
What is the primary purpose of the numeric keypad on a full-size keyboard?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• The numeric keypad groups number keys and arithmetic symbols in a calculator-like arrangement.
• It is useful in applications involving frequent numerical data entry.
• Its operation may depend partly on the state of Num Lock.
• It is useful in applications involving frequent numerical data entry.
• Its operation may depend partly on the state of Num Lock.
వివరణ:
Question 8
ప్రశ్న 8
Which of the following key groups is conventionally labelled F1, F2, F3 and so on?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Keys labelled F1 through F12 on many keyboards are called function keys.
• Their exact actions depend on the operating system or application in use.
• They are distinct from navigation, modifier and toggle keys.
• Their exact actions depend on the operating system or application in use.
• They are distinct from navigation, modifier and toggle keys.
వివరణ:
Question 9
ప్రశ్న 9
Which keyboard layout is the most widely recognized standard layout for English-language keyboards and derives its name from the first six letters of its upper alphabetic row?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• QWERTY is named after the sequence Q-W-E-R-T-Y near the beginning of the upper alphabetic row.
• It is the most widely recognized keyboard layout for English-language computing.
• Other layouts such as DVORAK, AZERTY and QWERTZ use different arrangements.
• It is the most widely recognized keyboard layout for English-language computing.
• Other layouts such as DVORAK, AZERTY and QWERTZ use different arrangements.
వివరణ:
Question 10
ప్రశ్న 10
Which pair consists entirely of keyboard navigation keys?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Home and End are navigation keys used to move the insertion point or view position depending on the application.
• Arrow keys, Page Up and Page Down also belong to the navigation-key group.
• Ctrl, Alt and Shift are modifier keys, while Caps Lock and Num Lock are toggle keys.
• Arrow keys, Page Up and Page Down also belong to the navigation-key group.
• Ctrl, Alt and Shift are modifier keys, while Caps Lock and Num Lock are toggle keys.
వివరణ:
Question 11
ప్రశ్న 11
Which keyboard technology commonly provides an individual mechanical switch beneath each key and is often distinguished from membrane-keyboard construction?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A mechanical keyboard uses separate mechanical key switches beneath individual keys.
• A membrane keyboard instead typically uses layered flexible membranes and contact structures.
• The terms describe keyboard switch construction rather than secondary-storage technologies.
• A membrane keyboard instead typically uses layered flexible membranes and contact structures.
• The terms describe keyboard switch construction rather than secondary-storage technologies.
వివరణ:
Question 12
ప్రశ్న 12
Which statement best describes an ergonomic keyboard?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Ergonomic keyboards use layouts, split sections, angles or other design features intended to improve typing posture and comfort.
• Their purpose is not limited to gaming.
• They remain ordinary input devices capable of entering standard text and commands.
• Their purpose is not limited to gaming.
• They remain ordinary input devices capable of entering standard text and commands.
వివరణ:
Question 13
ప్రశ్న 13
Which pointing device detects movement by using an optical sensor to observe changes in the surface beneath it?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• An optical mouse uses an optical sensor and illumination system to detect relative motion across a surface.
• It contains no traditional rolling ball for normal movement detection.
• A numeric keypad is a keyboard component rather than a pointing device.
• It contains no traditional rolling ball for normal movement detection.
• A numeric keypad is a keyboard component rather than a pointing device.
వివరణ:
Question 14
ప్రశ్న 14
A user moves a handheld device across a desk, and the on-screen pointer moves correspondingly. Which type of device is being used?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A mouse is a pointing input device whose physical movement is translated into pointer movement on the screen.
• It is commonly used for selecting, dragging and activating graphical objects.
• Scanners and microphones capture different kinds of input, while printers are output devices.
• It is commonly used for selecting, dragging and activating graphical objects.
• Scanners and microphones capture different kinds of input, while printers are output devices.
వివరణ:
Question 15
ప్రశ్న 15
Which action of a mouse generally means pressing and releasing the primary mouse button twice in rapid succession?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Double-clicking means pressing and releasing the primary mouse button twice quickly.
• Depending on the operating system and application, it may open a file, folder or program.
• Dragging requires holding a button while moving the mouse.
• Depending on the operating system and application, it may open a file, folder or program.
• Dragging requires holding a button while moving the mouse.
వివరణ:
Question 16
ప్రశ్న 16
Which pointing device remains stationary while the user rotates an exposed ball with the fingers or thumb to move the pointer?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A trackball remains largely stationary while the user rotates its ball to control pointer movement.
• This differs from a conventional mouse, which is normally moved across a surface.
• Trackballs are useful where desk space for moving a mouse is limited.
• This differs from a conventional mouse, which is normally moved across a surface.
• Trackballs are useful where desk space for moving a mouse is limited.
వివరణ:
Question 17
ప్రశ్న 17
Which input device is commonly integrated into laptop computers and controls the pointer by sensing finger movement across a flat surface?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A touchpad is a flat pointing surface commonly built into notebook and laptop computers.
• It senses finger position and movement and translates these into pointer actions.
• Taps and multi-finger gestures may also perform clicking, scrolling and other functions.
• It senses finger position and movement and translates these into pointer actions.
• Taps and multi-finger gestures may also perform clicking, scrolling and other functions.
వివరణ:
Question 18
ప్రశ్న 18
Which device is especially suitable for directional control in games, simulations and certain control applications where movement of a lever is converted into input?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A joystick uses movement of a control stick or lever to provide directional input.
• It is frequently associated with games, simulations and specialised control systems.
• Scanners and printers perform document input and output functions rather than directional pointing.
• It is frequently associated with games, simulations and specialised control systems.
• Scanners and printers perform document input and output functions rather than directional pointing.
వివరణ:
Question 19
ప్రశ్న 19
Consider the following pairs:
1. Keyboard — Text and command input
2. Mouse — Pointing and selection
3. Touchpad — Pointer control on portable computers
4. Trackball — Pointer movement through rotation of a stationary ball
Which pairs are correctly matched?
1. Keyboard — Text and command input
2. Mouse — Pointing and selection
3. Touchpad — Pointer control on portable computers
4. Trackball — Pointer movement through rotation of a stationary ball
Which pairs are correctly matched?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A keyboard is used for alphanumeric and command input, while a mouse provides graphical pointing and selection.
• A touchpad performs pointer control through finger movement on a flat surface.
• A trackball controls pointer movement through rotation of its exposed ball, so all four pairs are correctly matched.
• A touchpad performs pointer control through finger movement on a flat surface.
• A trackball controls pointer movement through rotation of its exposed ball, so all four pairs are correctly matched.
వివరణ:
Question 20
ప్రశ్న 20
Match List I with List II:
List I
(a) Caps Lock
(b) Ctrl
(c) Trackball
(d) Touchpad
List II
1. Modifier key
2. Stationary pointing device using a movable ball
3. Toggle key
4. Flat touch-sensitive pointing surface
Choose the correct matching code.
List I
(a) Caps Lock
(b) Ctrl
(c) Trackball
(d) Touchpad
List II
1. Modifier key
2. Stationary pointing device using a movable ball
3. Toggle key
4. Flat touch-sensitive pointing surface
Choose the correct matching code.
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Caps Lock is a toggle key, giving (a)-3.
• Ctrl is a modifier key, giving (b)-1.
• A trackball is a stationary pointing device using a movable ball, while a touchpad is a flat touch-sensitive pointing surface, giving (c)-2 and (d)-4.
• Ctrl is a modifier key, giving (b)-1.
• A trackball is a stationary pointing device using a movable ball, while a touchpad is a flat touch-sensitive pointing surface, giving (c)-2 and (d)-4.
వివరణ:
Answer Key సమాధానాల పట్టిక
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Question 1 ప్రశ్న 1Answer: C. To enter text, numbers, commands and other input into a computer సమాధానం: C.
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Question 2 ప్రశ్న 2Answer: A. Backspace సమాధానం: A.
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Question 3 ప్రశ్న 3Answer: D. Caps Lock సమాధానం: D.
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Question 4 ప్రశ్న 4Answer: B. Tab సమాధానం: B.
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Question 5 ప్రశ్న 5Answer: C. Delete commonly removes the character to the right of the cursor, while Backspace commonly removes the character to the left. సమాధానం: C.
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Question 6 ప్రశ్న 6Answer: B. Shift సమాధానం: B.
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Question 7 ప్రశ్న 7Answer: A. To facilitate rapid entry of numbers and arithmetic-related symbols సమాధానం: A.
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Question 8 ప్రశ్న 8Answer: D. Function keys సమాధానం: D.
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Question 9 ప్రశ్న 9Answer: A. QWERTY సమాధానం: A.
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Question 10 ప్రశ్న 10Answer: C. Home and End సమాధానం: C.
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Question 11 ప్రశ్న 11Answer: D. Mechanical keyboard సమాధానం: D.
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Question 12 ప్రశ్న 12Answer: B. It is designed with shape or key arrangement intended to improve user comfort and reduce awkward hand or wrist posture. సమాధానం: B.
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Question 13 ప్రశ్న 13Answer: C. Optical mouse సమాధానం: C.
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Question 14 ప్రశ్న 14Answer: A. Mouse సమాధానం: A.
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Question 15 ప్రశ్న 15Answer: B. Double-clicking సమాధానం: B.
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Question 16 ప్రశ్న 16Answer: D. Trackball సమాధానం: D.
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Question 17 ప్రశ్న 17Answer: D. Touchpad సమాధానం: D.
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Question 18 ప్రశ్న 18Answer: C. Joystick సమాధానం: C.
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Question 19 ప్రశ్న 19Answer: A. 1, 2, 3 and 4 సమాధానం: A.
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Question 20 ప్రశ్న 20Answer: B. (a)-3, (b)-1, (c)-2, (d)-4 సమాధానం: B.