Information and Communication Technology MCQ

1251. Carries data between the processor, the memory unit and the input/output devices

Correct Answer: Correct answer is: (B) Data bus.

Exam Relevance: Computer Architecture, Digital Systems, Computer Engineering

Difficulty: Easy

Concept notes: The data bus is a communication pathway that transfers data between the processor, memory, and input/output devices.

Common Mistakes: Students may confuse the data bus with the address bus, which is used to specify memory addresses rather than carry data.

Explanations: The data bus is responsible for carrying data between the processor, memory, and input/output devices. This function is essential for the operation of a computer system, as it allows the processor to read data from memory or input devices and write data to memory or output devices.

Option Analysis:

Option A: The address bus is used to specify memory addresses, not to carry data.
Option B: The data bus carries data between the processor, memory, and input/output devices.
Option C: The control bus carries control signals, not data.
Option D: The system bus is a general term that can include the data bus, address bus, and control bus, but it is not specific to data transfer.

Mnemonic: Data Bus: "Data Brought to and from System"

1252. Vouchers can be displayed in

Correct Answer: Correct answer is: (B) Day book.

Exam Relevance: CA Foundation, ICSE, CBSE

Difficulty: Easy

Concept notes: Vouchers are records of financial transactions and can be displayed in a day book, which is a chronological record of all transactions.

Common Mistakes: Students may confuse the day book with other accounting books like the ledger or inventory records.

Explanations: Vouchers are records of financial transactions and are typically recorded in a day book, which maintains a chronological record of all transactions. This makes the day book the correct choice for displaying vouchers.

Option Analysis:

Option A: Accounts info does not specifically refer to a chronological record of transactions.
Option B: Day book is the correct choice as it maintains a chronological record of all transactions.
Option C: Inventory info is related to stock and goods, not financial transactions.
Option D: Ledger is a summary of accounts, not a chronological record of transactions.

1253. When a process wants to print a file, it writes the file name in a directory called:

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

Exam Relevance: Operating Systems, Computer Science Exams, System Administration Exams

Difficulty: Moderate

Concept notes: The spooler is a system that manages print jobs by temporarily storing them in a queue before they are sent to the printer.

Common Mistakes: Students may confuse the spooler with a buffer, which is used for temporary storage of data in memory, not specifically for print jobs.

Explanations: When a process wants to print a file, it writes the file name in a directory called the spooler. The spooler is a system that manages print jobs by temporarily storing them in a queue before they are sent to the printer. This allows multiple processes to request printing without waiting for the printer to become available, improving system efficiency.

Option Analysis:

Option A: Correct. The spooler is the directory where print jobs are temporarily stored.
Option B: Incorrect. A buffer is used for temporary storage of data in memory, not specifically for print jobs.
Option C: Incorrect. A daemon is a background process that runs continuously, not a directory for print jobs.
Option D: Incorrect. A log is a record of events, not a directory for print jobs.

Mnemonic: SPOOL: Save Print Operations On Line

1254. LCD stands for.....

Correct Answer: Correct answer is: (C) Liquid Crystal Display.

Exam Relevance: SAT, ACT, AP Physics, IGCSE

Difficulty: Very Easy

Concept notes: LCD stands for Liquid Crystal Display, which is a technology used in electronic displays.

Common Mistakes: Students may confuse LCD with other acronyms or think it stands for something else like "Low Crystal Display" or "Less Crystal Display."

Explanations: LCD is the correct term for the technology that uses liquid crystals to display images and text on screens. The acronym stands for Liquid Crystal Display, which is a widely used display technology in devices such as televisions, computer monitors, and smartphones.

Option Analysis:

Option A: Incorrect, as LCD does not stand for Low Crystal Display.
Option B: Incorrect, as LCD does not stand for Less Crystal Display.
Option C: Correct, as LCD stands for Liquid Crystal Display.
Option D: Incorrect, as not all options are correct.

Mnemonic: LCD: Liquid Crystal Display

1255. Short cut Ctrl + P used to

Correct Answer: Correct answer is: (D) Open Print Dialog box.

Exam Relevance: GRE, GMAT, Microsoft Office Specialist

Difficulty: Very Easy

Concept notes: The shortcut Ctrl + P is commonly used in various software applications, particularly in word processors and web browsers, to initiate the printing process.

Common Mistakes: Students may confuse Ctrl + P with other keyboard shortcuts like Ctrl + S for saving a document or Ctrl + A for selecting all text.

Explanations: The shortcut Ctrl + P is universally recognized for opening the print dialog box in most applications. This allows users to configure and initiate the printing process directly from the application interface.

Option Analysis:

Option A: Ctrl + P does not open the Paragraph Dialog Box. This is typically accessed through the application's menu or right-click context menu.
Option B: Ctrl + P does not open the Page Format Dialog Box. This is usually accessed through the application's menu or right-click context menu.
Option C: Ctrl + P does not open the Save Dialog Box. The Save Dialog Box is typically opened using Ctrl + S.
Option D: Ctrl + P opens the Print Dialog Box, which is the correct function of this keyboard shortcut.

Mnemonic: Print Prompt: P for Print

1256. Zero address instruction format is used for

Correct Answer: Correct answer is: (D) Stack-organized architecture.

Exam Relevance: Computer Architecture, Computer Organization, Microprocessors

Difficulty: Moderate

Concept notes: In stack-organized architectures, operations are performed on the top elements of a stack, eliminating the need for explicit operand addresses.

Common Mistakes: Students may confuse stack-organized architectures with RISC or CISC architectures, which typically use register-based addressing.

Explanations: Stack-organized architectures use a stack to hold operands and results. Instructions in this architecture do not need to specify operand addresses because the operands are always at the top of the stack. This makes the instruction format simpler, often leading to a zero-address format where the operands are implicitly defined by the stack. Therefore, the zero-address instruction format is used in stack-organized architectures.

Option Analysis:

Option A: RISC architectures typically use a register-based addressing scheme, not a zero-address format.
Option B: CISC architectures also use a register-based addressing scheme, not a zero-address format.
Option C: Von-Neumann architecture is a computer architecture model and does not specifically refer to instruction formats.
Option D: Stack-organized architectures use a stack to hold operands, making the zero-address instruction format applicable.

Mnemonic: Stacks hold, no need to show.

1257. What does "DTL" means?

Correct Answer: Correct answer is: (D) Diode Transistor Logic.

Exam Relevance: GATE, ECE, EE

Difficulty: Easy

Concept notes: DTL stands for Diode Transistor Logic, which is a type of digital logic family used in the design of electronic circuits.

Common Mistakes: Students may confuse DTL with other logic families such as TTL (Transistor-Transistor Logic) or RTL (Resistor-Transistor Logic).

Explanations: Diode Transistor Logic (DTL) is a logic family that uses diodes and transistors to implement logic gates. The diodes are used to form the input logic levels, and the transistors are used to amplify and invert the signals. This combination allows for the creation of basic logic gates such as AND, OR, and NOT gates.

Option Analysis:

Option A: Data Terminal Load is not a standard term in digital logic design.
Option B: Data Terminal Logic is not a recognized term in digital electronics.
Option C: Diode Transistor Load is not a standard term in digital logic design.
Option D: Diode Transistor Logic is the correct term for a logic family that uses diodes and transistors.

Mnemonic: DTL: Diodes and Transistors Logic

1258. A computer performs operations by comparing data items and then, depending on the results, follows predetermined course of action. What are such operations called?

Correct Answer: Correct answer is: (B) Logical.

Exam Relevance: SAT, ACT, AP Computer Science

Difficulty: Easy

Concept notes: Logical operations involve decision-making based on the comparison of data items.

Common Mistakes: Students may confuse logical operations with sequential operations, which involve a series of steps without decision-making.

Explanations: Logical operations in computing involve comparing data items and making decisions based on the results of those comparisons. This aligns with the description provided in the question, where the computer follows predetermined courses of action based on the comparison results.

Option Analysis:

Option A: Sequential operations involve a series of steps executed in order, without decision-making based on comparisons.
Option B: Logical operations involve decision-making based on the comparison of data items, which matches the description in the question.
Option C: Digital operations refer to the use of binary data, but do not specifically involve decision-making based on comparisons.
Option D: Physical operations refer to the physical processes within a computer, not decision-making based on comparisons.

1259. 1 Byte =.....?

Correct Answer: Correct answer is: (A) 8 bits.

Exam Relevance: AP Computer Science, SAT Subject Test in Computer Science, A-Level Computing

Difficulty: Very Easy

Concept notes: A byte is a unit of digital information that most commonly consists of 8 bits.

Common Mistakes: Students may confuse the number of bits in a byte with other common binary units, such as nibbles (4 bits).

Explanations: A byte is defined as a group of 8 bits. This is a fundamental unit in computing and digital communication. The term "byte" is widely used in computer science and information technology to measure data sizes.

Option Analysis:

Option A: Correct. A byte is defined as 8 bits.
Option B: Incorrect. 4 bits is a nibble, not a byte.
Option C: Incorrect. 2 bits is not a standard unit of measurement in computing.
Option D: Incorrect. 9 bits is not a standard unit of measurement in computing.

Mnemonic: Byte = 8 bits, think "B" for "Byte" and "B" for "Base 8".

1260. What is this process called:The CPU makes sense of the instruction it has just fetched.

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

Exam Relevance: AP Computer Science Principles, A Level Computing, IB Computer Science

Difficulty: Easy

Concept notes: The process of making sense of an instruction fetched by the CPU is called decoding.

Common Mistakes: Students may confuse the decode step with the execute step, where the instruction is actually carried out.

Explanations: The CPU fetches an instruction from memory and then decodes it to understand what operation needs to be performed. This step is crucial as it translates the instruction into a form that the CPU can execute.

Option Analysis:

Option A: Correct. The decode step is where the CPU interprets the instruction.
Option B: Incorrect. The execute step is where the CPU carries out the instruction after it has been decoded.
Option C: Incorrect. "Process" is too general and does not specifically refer to the step of interpreting the instruction.
Option D: Incorrect. Fetch is the step where the CPU retrieves the instruction from memory, not where it interprets it.

Mnemonic: Decode, Discover, Do

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3 thoughts on “Information and Communication Technology MCQ - Set 126”

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 126”

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