Information and Communication Technology MCQ

911. What cable is used to connect your computer to the internet?

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

Exam Relevance: IT Essentials, CompTIA A+, Network+ exams

Difficulty: Easy

Concept notes: Ethernet is a standard for connecting devices to a network, including the internet.

Common Mistakes: Students may confuse Ethernet with other types of cables like USB or VGA, which are not used for internet connectivity.

Explanations: Ethernet cables are specifically designed to connect devices to a network, including the internet. They are commonly used in both home and office settings to establish a wired connection to a router or modem, which in turn connects to the internet.

Option Analysis:

Option A: Ethernet cables are used to connect devices to a network, including the internet.
Option B: VGA cables are used for video connections between a computer and a monitor, not for internet connectivity.
Option C: USB cables are used for data transfer and connecting peripherals, not for internet connectivity.
Option D: This option is incorrect as Ethernet is the correct cable for internet connectivity.

Mnemonic: E for Ethernet, E for Internet.

912. A cell is defined as

Correct Answer: Correct answer is: (A) The intersection of a column and a row.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: A cell in a spreadsheet is defined as the intersection of a column and a row.

Common Mistakes: Students may confuse a cell with an input box or a rectangular marker, which are visual elements but not the definition of a cell.

Explanations: In a spreadsheet, a cell is the basic unit where data is entered and manipulated. It is located at the point where a column and a row intersect. This intersection uniquely identifies each cell, allowing for precise data management and manipulation.

Option Analysis:

Option A: Correct. A cell is defined as the intersection of a column and a row.
Option B: Incorrect. An input box is a visual element used to enter data, not the definition of a cell.
Option C: Incorrect. A rectangular marker is a visual representation of a cell, not its definition.
Option D: Incorrect. Since not all options are correct, this cannot be the right answer.

913. Which of the following IP address class is Multicast?

Correct Answer: Correct answer is: (B) Class D.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: Multicast IP addresses are part of Class D in the IP address classification system.

Common Mistakes: Students may confuse multicast addresses with other classes, such as Class C, which is used for typical local networks.

Explanations: Multicast addresses are specifically designated for Class D IP addresses, which range from 224.0.0.0 to 239.255.255.255. These addresses are used to send data to multiple destinations simultaneously, making them distinct from unicast (one-to-one) and broadcast (one-to-all) addresses.

Option Analysis:

Option A: Class C addresses are used for typical local networks and do not include multicast addresses.
Option B: Class D addresses are specifically designated for multicast addresses.
Option C: Class B addresses are used for medium-sized networks and do not include multicast addresses.
Option D: Multicast addresses are exclusively in Class D, not in all classes.

Mnemonic: D for Direct Delivery to Multiple

914. What is used to control if a loop should run or not?

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

Exam Relevance: AP Computer Science, SAT Subject Test in Computer Science, IB Computer Science

Difficulty: Easy

Concept notes: A condition is used to determine whether a loop should continue running or terminate.

Common Mistakes: Students may confuse the role of conditions with other control structures like if-else statements, which are used for decision-making rather than loop control.

Explanations: In loops, a condition is evaluated at the beginning or end of each iteration to decide whether the loop should continue. If the condition is true, the loop continues; if false, the loop terminates.

Option Analysis:

Option A: Correct. A condition is used to control the loop's execution.
Option B: Incorrect. An if statement is used for conditional execution, not loop control.
Option C: Incorrect. An else statement is used in conjunction with if statements for alternative execution paths, not loop control.
Option D: Incorrect. Fitness is not a term used in loop control.

Mnemonic: Condition = Continue or Conclude

915. Which is NOT a disadvantage of fixed point binary numbers?

Correct Answer: Correct answer is: (C) Easier to process.

Exam Relevance: Computer Architecture, Digital Logic Design, Computer Science Exams

Difficulty: Easy

Concept notes: Fixed point binary numbers have limitations in representing a wide range and high accuracy of numbers, but they are generally easier to process compared to floating point numbers.

Common Mistakes: Students may mistakenly believe that fixed point numbers are more difficult to process due to their limitations in range and accuracy.

Explanations: Fixed point binary numbers are easier to process because they use a simpler arithmetic operation compared to floating point numbers. Fixed point numbers have a fixed number of bits for the integer and fractional parts, which simplifies the hardware and software required for arithmetic operations. This simplicity makes them easier to process, even though they have limitations in range and accuracy.

Option Analysis:

Option A: Fixed point numbers cannot represent a wide range of numbers, which is a disadvantage.
Option B: Fixed point numbers cannot represent high accuracy, which is another disadvantage.
Option C: Fixed point numbers are easier to process, which is not a disadvantage.
Option D: This option is incorrect as one of the other options is indeed correct.

916. A signal sent by a hardware or software to CPU indicating that something needs attention

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

Exam Relevance: Computer Architecture, Operating Systems, Computer Science Fundamentals

Difficulty: Easy

Concept notes: An interrupt is a signal sent by hardware or software to the CPU indicating that an event needs immediate attention.

Common Mistakes: Students may confuse an interrupt with a disturbance, which is not a technical term used in computer architecture.

Explanations: An interrupt is a signal that can come from hardware (like a keyboard press or a network packet arrival) or software (like a timer expiration). When an interrupt occurs, the CPU temporarily stops its current task to handle the interrupt, ensuring that important events are not ignored. This is why the correct answer is "Interrupt."

Option Analysis:

Option A: Disturbance is not a technical term used in computer architecture for signaling the CPU.
Option B: Interrupt is the correct term for a signal sent to the CPU to handle an event.
Option C: Waiting is a state where the CPU is idle, not a signal to handle an event.
Option D: Exclusion is a concept related to preventing simultaneous access to resources, not a signal to the CPU.

917. Which of the following is a volatile memory?

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

Exam Relevance: Computer Science Exams, IT Certification Exams

Difficulty: Easy

Concept notes: RAM (Random Access Memory) is a type of volatile memory that loses its data when the power is turned off.

Common Mistakes: Students may confuse RAM with non-volatile memory types like ROM (Read-Only Memory).

Explanations: RAM is volatile memory because it requires a constant power supply to retain data. When the power is turned off, the data stored in RAM is lost. This is in contrast to non-volatile memory types like ROM, which retain data even without power.

Option Analysis:

Option A: EFPROM is a type of non-volatile memory, which retains data even when power is turned off.
Option B: PROM is a type of non-volatile memory, which retains data even when power is turned off.
Option C: EPOM is not a standard term; it might be a typo for EPROM, which is a type of non-volatile memory.
Option D: RAM is a type of volatile memory, which loses its data when power is turned off.

Mnemonic: RAM: Requires Always Memory

918. ASCII Stands for (6-7)

Correct Answer: Correct answer is: (A) American Standard Code for Information Interchange.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Very Easy

Concept notes: ASCII is a character encoding standard used to represent text in computers and other devices.

Common Mistakes: Students may confuse ASCII with other encoding standards or misspell the full form.

Explanations: ASCII stands for American Standard Code for Information Interchange. It is a widely used character encoding standard that assigns unique numbers to each character, including letters, numbers, and symbols. This standard allows computers and other devices to communicate and exchange text data consistently.

Option Analysis:

Option A: Correct. ASCII stands for American Standard Code for Information Interchange.
Option B: Incorrect. The term "Scientific" is not part of the ASCII acronym.
Option C: Incorrect. The terms "Absolute" and "Codes for Instruction" do not match the ASCII acronym.
Option D: Incorrect. The correct answer is provided in Option A.

Mnemonic: ASCII: All Standard Characters In Computers

919. Given the code below, what is the value stored in result?String myString = "quiz";int result = myString.length();

Correct Answer: Correct answer is: (A) 4.

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

Difficulty: Very Easy

Concept notes: The length of a string in programming is the number of characters it contains.

Common Mistakes: Students may confuse the length with the index of the last character, which is one less than the length.

Explanations: The string "quiz" contains 4 characters: 'q', 'u', 'i', and 'z'. Therefore, the length of the string is 4.

Option Analysis:

Option A: Correct, as the string "quiz" has 4 characters.
Option B: Incorrect, as the string "quiz" has 4 characters, not 3.
Option C: Incorrect, as the string "quiz" has 4 characters, not 5.
Option D: Incorrect, as no exception is thrown; the length method returns an integer value.

920. Which logic is known as universal logic?

Correct Answer: Correct answer is: (B) NAND logic.

Exam Relevance: GATE, ECE, CS

Difficulty: Easy

Concept notes: NAND logic is considered universal because any logical function can be implemented using only NAND gates.

Common Mistakes: Students may confuse NAND logic with other universal logic gates like NOR, which can also implement any logical function.

Explanations: NAND logic is universal because any logical function can be implemented using only NAND gates. This is due to the fact that NAND gates can be used to create the basic logic functions AND, OR, and NOT. Since these basic functions can be combined to create any complex logical function, NAND gates alone are sufficient to implement any digital circuit.

Option Analysis:

Option A: PAL logic is a type of programmable logic array but is not considered universal logic.
Option B: NAND logic is universal because any logical function can be implemented using only NAND gates.
Option C: MUX logic is used for multiplexing signals but is not considered universal logic.
Option D: Decoder logic is used to convert binary information into a set of outputs but is not considered universal logic.

Mnemonic: NAND: Not AND, All Digital

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3 thoughts on “Information and Communication Technology MCQ - Set 92”

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 92”

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