Information and Communication Technology MCQ

131. The more pixels, the greater the detail you will see this is called.....

Correct Answer: Correct answer is: (A) Resolution.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Resolution refers to the number of pixels in an image or display, which determines the level of detail visible.

Common Mistakes: Students may confuse resolution with file size, thinking that a larger file size automatically means higher detail.

Explanations: Resolution is the measure of the number of pixels in an image or display. The more pixels there are, the more detailed the image can be, allowing for finer distinctions and clearer visuals. This is why resolution is the correct term for describing the level of detail in an image.

Option Analysis:

Option A: Resolution is the correct term for the number of pixels in an image, which directly affects the level of detail.
Option B: Revolution is unrelated to image detail and refers to a complete turn or cycle.
Option C: Colour depth refers to the number of bits used to represent the color of a single pixel, not the detail level.
Option D: File size is the amount of storage space an image takes up, not the level of detail.

Mnemonic: Remember: "Res" for Resolution, "Res" for Resolution, "Res" for Detail.

132. Which of the following series type is not valid for Fill Series dialog box?

Correct Answer: Correct answer is: (D) Time.

Exam Relevance: Microsoft Excel Certification, Google Sheets Certification

Difficulty: Moderate

Concept notes: The Fill Series dialog box in spreadsheet software typically supports linear, growth, and autofill series types. The time series type is not a valid option for this dialog box.

Common Mistakes: Students may confuse the Fill Series dialog box with other features that handle time series data, such as date and time functions or custom fill options.

Explanations: The Fill Series dialog box in spreadsheet software is designed to handle linear, growth, and autofill series types. Linear series involve a constant difference between values, growth series involve a constant ratio, and autofill can recognize patterns and fill accordingly. Time series, which involve sequences of data points indexed in time order, are not directly supported by the Fill Series dialog box. Instead, time series data is typically handled through specific date and time functions or custom fill options.

Option Analysis:

Option A: Linear series are valid and commonly used in the Fill Series dialog box.
Option B: Growth series are valid and commonly used in the Fill Series dialog box.
Option C: Autofill is valid and commonly used in the Fill Series dialog box.
Option D: Time series are not a valid option for the Fill Series dialog box.

133. How is a new variable created in Blockly?

Correct Answer: Correct answer is: (A) Drag the variable block onto the work space area.

Exam Relevance: AP Computer Science Principles, Introductory Programming Exams

Difficulty: Easy

Concept notes: In Blockly, variables are created by dragging a variable block from the toolbox onto the workspace.

Common Mistakes: Students might mistakenly think that variables are created by writing code or using traditional programming syntax.

Explanations: Blockly is a visual programming language where blocks represent code. To create a new variable, one must drag a variable block from the toolbox onto the workspace. This action initializes the variable within the program's context.

Option Analysis:

Option A: Correct. This is the method used in Blockly to create a new variable.
Option B: Incorrect. Blockly does not use traditional programming syntax like assignment operators.
Option C: Incorrect. Blockly does not use Dim statements or any other traditional declaration methods.
Option D: Incorrect. Blockly does not require determining variable types or inserting variables into specific places in the code.

Mnemonic: Drag and Drop for Variables

134. Cycle stealing technique is used in

Correct Answer: Correct answer is: (C) DMA based data transfer.

Exam Relevance: Computer Architecture, Operating Systems, Computer Organization

Difficulty: Moderate

Concept notes: DMA (Direct Memory Access) allows peripheral devices to transfer data directly to and from memory without CPU intervention. Cycle stealing is a technique used in DMA where the CPU temporarily relinquishes control of the bus to allow the DMA controller to transfer data.

Common Mistakes: Students may confuse cycle stealing with interrupt-based data transfer, where the CPU is interrupted to handle data transfer, rather than temporarily giving up control of the bus.

Explanations: Cycle stealing is a technique used in DMA-based data transfer. In this method, the DMA controller takes control of the system bus for a short period to transfer data directly between the peripheral and memory, without the CPU's direct involvement. This allows the CPU to continue executing instructions while the DMA controller handles the data transfer, improving system efficiency.

Option Analysis:

Option A: Interrupt-based data transfer involves the CPU being interrupted to handle data transfer, which is different from cycle stealing.
Option B: Polled mode data transfer involves the CPU continuously checking the status of the peripheral, which is not related to cycle stealing.
Option C: DMA based data transfer uses cycle stealing to temporarily relinquish control of the bus to the DMA controller for data transfer.
Option D: This option is incorrect as cycle stealing is specifically used in DMA-based data transfer.

Mnemonic: DMA steals cycles, not CPU control.

135. What part of the microprocessor fetches and decodes the incoming instructions and generates the signal necessary for the arithmetic and logic unit to perform the intended function?

Correct Answer: Correct answer is: (D) Control unit.

Exam Relevance: Computer Architecture, Digital Systems, Microprocessor Design

Difficulty: Moderate

Concept notes: The control unit is responsible for fetching and decoding instructions and generating control signals for the ALU to perform operations.

Common Mistakes: Students may confuse the ALU with the control unit, as both are integral parts of the microprocessor but have distinct functions.

Explanations: The control unit fetches instructions from memory, decodes them to understand the operation required, and generates the necessary control signals to direct the ALU to perform the intended function. The ALU, accumulator, and stack are not responsible for fetching and decoding instructions.

Option Analysis:

Option A: The ALU performs arithmetic and logic operations but does not fetch or decode instructions.
Option B: The stack is used for temporary storage and does not fetch or decode instructions.
Option C: The accumulator is a register used for arithmetic operations but does not fetch or decode instructions.
Option D: The control unit is responsible for fetching and decoding instructions and generating control signals for the ALU.

Mnemonic: Control Unit: "Fetch, Decode, Signal" (FDS)

136. Which of the three main topologies rely on a single main cable to transmit data packets?

Correct Answer: Correct answer is: (C) Bus.

Exam Relevance: CCNA, CompTIA Network+, A+ Certification

Difficulty: Easy

Concept notes: In a bus topology, all devices are connected to a single main cable, known as the bus or backbone. Data packets travel along this cable to reach their destination.

Common Mistakes: Students may confuse the bus topology with the ring topology, where devices are connected in a circular loop, or the star topology, where devices are connected to a central hub.

Explanations: The bus topology relies on a single main cable to transmit data packets. In this configuration, all devices are connected to this single cable, and data packets travel along this cable to reach their destination. This is in contrast to the ring topology, where devices are connected in a circular loop, and the star topology, where devices are connected to a central hub.

Option Analysis:

Option A: In a ring topology, devices are connected in a circular loop, not to a single main cable.
Option B: In a star topology, devices are connected to a central hub, not to a single main cable.
Option C: In a bus topology, all devices are connected to a single main cable, making this the correct answer.
Option D: This option is incorrect as the bus topology does rely on a single main cable.

Mnemonic: Bus = Big Single Umbilical String

137. Which of the following is not the part of standard office suite?

Correct Answer: Correct answer is: (B) File manager.

Exam Relevance: GRE, GMAT, IT Certification Exams

Difficulty: Easy

Concept notes: A standard office suite typically includes applications like word processors, spreadsheets, and presentation software. It may also include a database application and an image editor. However, a file manager is generally considered a separate utility and not part of the core office suite.

Common Mistakes: Students may mistakenly believe that a file manager is part of an office suite because it is often included in operating systems and used alongside office applications.

Explanations: A standard office suite includes applications such as word processors, spreadsheets, and presentation software. These applications are designed to handle document creation, data management, and multimedia presentations. While a database application and an image editor can be included in some office suites, a file manager is typically a separate utility used for organizing and managing files on a computer. Therefore, a file manager is not considered part of the core office suite.

Option Analysis:

Option A: Database applications can be part of an office suite, used for managing data.
Option B: File managers are not part of a standard office suite; they are separate utilities for file organization.
Option C: Image editors can be included in some office suites for handling multimedia content.
Option D: Word processors are a core component of any office suite, used for document creation and editing.

138. A bus that connects a computer to Peripheral devices is called.....

Correct Answer: Correct answer is: (C) External Bus.

Exam Relevance: Computer Science Fundamentals, Computer Architecture Exams

Difficulty: Easy

Concept notes: An external bus is a communication pathway that connects a computer to peripheral devices.

Common Mistakes: Students may confuse the external bus with the memory bus or front-side bus, which are internal to the computer.

Explanations: The external bus is specifically designed to connect peripheral devices to the computer. It allows data transfer between the computer and external devices such as printers, scanners, and external storage devices. The memory bus and front-side bus are internal buses that do not connect to peripheral devices.

Option Analysis:

Option A: Memory Bus is incorrect because it is an internal bus that connects the CPU to the memory, not peripheral devices.
Option B: Front-Side Bus is incorrect because it is an internal bus that connects the CPU to the main memory and other components, not peripheral devices.
Option C: External Bus is correct because it is the bus that connects the computer to peripheral devices.
Option D: All the above is incorrect because not all options are correct.

139. If you want to convert a symbol or several lines of text into an AutoCorrect entry, you should:

Correct Answer: Correct answer is: (A) Insert the symbol or type the text in a Word document first. Then, select the text or symbol and go to the AutoCorrect dialog box.

Exam Relevance: Microsoft Office Specialist, CompTIA A+, Microsoft Certified Educator

Difficulty: Moderate

Concept notes: The AutoCorrect feature in Microsoft Word allows users to create custom entries for symbols and text, which can be automatically replaced with predefined content.

Common Mistakes: Students may mistakenly believe that AutoCorrect entries can only be created through the Insert or Format menus, or that they are limited to single lines of text.

Explanations: To create an AutoCorrect entry for a symbol or multiple lines of text, the user must first insert the symbol or type the text in a Word document. After selecting the text or symbol, the user should navigate to the AutoCorrect dialog box to add the entry. This method ensures that the AutoCorrect feature can accommodate both symbols and multiple lines of text, contrary to the misconception that it is limited to single lines of text.

Option Analysis:

Option A: This is the correct procedure for creating an AutoCorrect entry for symbols or multiple lines of text.
Option B: This option incorrectly suggests navigating through the Insert or Format menus to add symbols or paragraphs to AutoCorrect, which is not the correct method.
Option C: This option is incorrect as it states that AutoCorrect can only accommodate one line of text, which is not true.
Option D: This option incorrectly suggests using the Edit menu followed by Paste Special to create a new AutoCorrect entry, which is not the correct procedure.

140. Which of the following is the fastest?

Correct Answer: Correct answer is: (A) CPU.

Exam Relevance: GRE, GMAT, Computer Science Exams

Difficulty: Easy

Concept notes: The CPU (Central Processing Unit) is the primary component responsible for executing instructions and performing calculations in a computer system. It operates at a much higher speed compared to other components like magnetic tapes and disks, video terminals, and sensors/mechanical controllers.

Common Mistakes: Students may confuse the speed of different components, mistaking storage devices or input/output devices for the fastest component.

Explanations: The CPU is the fastest component because it is designed to perform complex operations at high speeds. Magnetic tapes and disks are storage devices and operate at much slower speeds. Video terminals and sensors/mechanical controllers are input/output devices and are not designed for high-speed processing.

Option Analysis:

Option A: CPU is the correct answer as it is the fastest component in a computer system.
Option B: Magnetic tapes and disks are storage devices and operate at much slower speeds compared to the CPU.
Option C: Video terminals are input/output devices and are not designed for high-speed processing.
Option D: Sensors and mechanical controllers are also input/output devices and operate at much slower speeds compared to the CPU.

⬅ Previous SetSet 14Next Set ➡

3 thoughts on “Information and Communication Technology MCQ - Set 14”

Peter Ross April 8, 2020

The MCQ is quite entertaining and will help in increasing knowledge also.
Reyaz Ahmad khan December 26, 2020

plz help me in regard with current Affairs
Eshita Nandpal April 11, 2021

Plz give make a part of unit wise

3 thoughts on “Information and Communication Technology MCQ - Set 14”

Leave a Reply