Information and Communication Technology MCQ

741. What is the purpose of a Firewall?

Correct Answer: Correct answer is: (B) To prevent unauthorised connections coming into and out of a Network.

Exam Relevance: CEH, CISSP, CompTIA Security+

Difficulty: Moderate

Concept notes: A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

Common Mistakes: Students may confuse a firewall with antivirus software, which is designed to detect and remove viruses rather than control network traffic.

Explanations: A firewall's primary function is to prevent unauthorized access to or from a private network. It acts as a barrier between trusted internal networks and untrusted external networks, such as the Internet. By controlling traffic based on security rules, a firewall helps protect against unauthorized access and potential security breaches.

Option Analysis:

Option A: This is incorrect because detecting viruses is the job of antivirus software, not a firewall.
Option B: This is correct because a firewall's main purpose is to control and prevent unauthorized network connections.
Option C: This is incorrect and irrelevant to the function of a firewall.
Option D: This is incorrect because organizing data is not a function of a firewall.

Mnemonic: Firewall = Network Gatekeeper

742. Hypertext Transfer Protocol, a common system used to request and send HTML documents on the World Wide Web. It is the first portion of all URL addresses on the World Wide Web.

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

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: HTTP stands for Hypertext Transfer Protocol, which is a protocol used for transferring data over the World Wide Web.

Common Mistakes: Students may confuse HTTP with HTTPS, which is a secure version of HTTP.

Explanations: HTTP is the protocol used to request and send HTML documents on the World Wide Web. It is the first portion of all URL addresses on the World Wide Web, making it the correct answer.

Option Analysis:

Option A: Correct. HTTP is the protocol used for transferring data over the World Wide Web.
Option B: Incorrect. HTTPS is a secure version of HTTP, not the protocol used for all URL addresses.
Option C: Incorrect. Network is a general term and not specific to the protocol used for URL addresses.
Option D: Incorrect. None of the above is not applicable since HTTP is the correct answer.

743. Transfer of electronic mail.

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

Exam Relevance: CISSP, CompTIA Network+, CCNA

Difficulty: Easy

Concept notes: SMTP stands for Simple Mail Transfer Protocol, which is used for transferring electronic mail messages between servers.

Common Mistakes: Students may confuse SMTP with other protocols like FTP or Telnet, which have different primary functions.

Explanations: SMTP is specifically designed for the transfer of electronic mail. It operates as an application layer protocol that allows email servers to send and receive email messages. Other protocols like Telnet and FTP are not designed for email transfer.

Option Analysis:

Option A: Telnet is a protocol used for remote login and terminal emulation, not for email transfer.
Option B: FTP is a protocol used for transferring files between computers on a network, not for email transfer.
Option C: SMTP is the correct protocol for transferring electronic mail between servers.
Option D: MIME type is used to define the format of a file, not for transferring email.

744. What is a bus?

Correct Answer: Correct answer is: (A) A circuit that connect one part of CPU to other components.

Exam Relevance: Computer Science, Electrical Engineering, IT Certification Exams

Difficulty: Moderate

Concept notes: A bus in computing is a communication pathway that allows data to be transferred between different parts of a computer system.

Common Mistakes: Students may confuse a bus with a type of memory or a method of transport, which are unrelated concepts.

Explanations: A bus in computing is a circuit that connects different parts of a computer system, such as the CPU, memory, and input/output devices. It allows data to be transferred between these components. This is why the correct answer is a circuit that connects one part of the CPU to other components.

Option Analysis:

Option A: Correct. A bus is a circuit that connects different parts of a computer system.
Option B: Incorrect. A bus is not a type of long-term memory.
Option C: Incorrect. A bus is not a type of permanent memory.
Option D: Incorrect. A bus is not a method of transport.

Mnemonic: Bus = Buses in a computer, not on the road.

745. ..... is a protocol designed for recording and playing back music on digital synthesizers.

Correct Answer: Correct answer is: (B) Musical Digital Instrument Interface (MIDI).

Exam Relevance: AP Computer Science Principles, IB Computer Science

Difficulty: Easy

Concept notes: MIDI is a protocol used for communication between electronic musical instruments and computers.

Common Mistakes: Students may confuse MIDI with other digital audio formats or protocols.

Explanations: MIDI is specifically designed for recording and playing back music on digital synthesizers. It transmits information about musical notes, timing, and velocity, among other data, without the need for recording the actual sound. This makes it ideal for controlling synthesizers and other electronic instruments.

Option Analysis:

Option A: Graphical User Interface (GUI) is not related to music recording or playback on synthesizers.
Option B: Musical Digital Instrument Interface (MIDI) is the correct protocol for recording and playing back music on digital synthesizers.
Option C: None of the Above is incorrect as MIDI is the correct answer.
Option D: All the above is incorrect as only MIDI is the correct answer.

746. What does the s in https refer to?

Correct Answer: Correct answer is: (B) S is for "secure" - a version of http that is encrypted.

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

Difficulty: Easy

Concept notes: HTTPS stands for Hypertext Transfer Protocol Secure. It is an extension of HTTP that adds a layer of security through encryption.

Common Mistakes: Students may confuse HTTPS with HTTP and think the 'S' stands for something other than secure, such as "standard" or "simple."

Explanations: The 'S' in HTTPS stands for "secure." This indicates that the connection between the client and the server is encrypted, providing a secure channel for data transmission. This encryption helps protect sensitive information, such as passwords and credit card details, from being intercepted by unauthorized parties.

Option Analysis:

Option A: Incorrect. The 'S' does not stand for "plural" or indicate a more robust version of HTTP.
Option B: Correct. The 'S' stands for "secure," indicating an encrypted version of HTTP.
Option C: Incorrect. The 'S' does not stand for "simple" or indicate a simplified version of HTTP.
Option D: Incorrect. The 'S' does not stand for "standard" or distinguish the original HTTP from non-standard versions.

Mnemonic: HTTPS: Secure Protocol, Secure Transmission

747. The full form of PIN in a ATM card is

Correct Answer: Correct answer is: (B) Personal Identification Number.

Exam Relevance: Banking Exams, Competitive Exams, IT Exams

Difficulty: Very Easy

Concept notes: The term PIN stands for Personal Identification Number, which is a unique code used to authenticate the user of an ATM card.

Common Mistakes: Students may confuse PIN with other similar acronyms, such as Personal Index Number or Permanent Identification Number.

Explanations: The correct answer is Personal Identification Number because it accurately describes the purpose of the PIN, which is to provide a personal and secure method of identification for the cardholder.

Option Analysis:

Option A: Incorrect, as PIN does not stand for Permanent Information Number.
Option B: Correct, as PIN stands for Personal Identification Number.
Option C: Incorrect, as PIN does not stand for Personal Index Number.
Option D: Incorrect, as PIN does not stand for Permanent Identification Number.

748. When writing pseudocode it is a good idea to add comments to explain to others, and often to remind yourself, what the code is intended to do. To separate these comments from the actual code, what character(s) are used?

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

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

Difficulty: Easy

Concept notes: In pseudocode, comments are used to explain the purpose of the code to others or as a reminder for the coder. The double forward slash (//) is commonly used to denote comments in pseudocode and many programming languages.

Common Mistakes: Students may confuse the comment symbol with other symbols used in programming or pseudocode, such as the colon (:) or the hash (#).

Explanations: The double forward slash (//) is used to indicate comments in pseudocode. This symbol tells the reader that the text following it is not part of the executable code but rather a note or explanation. Other symbols like colons, parentheses, or hash symbols are not typically used for comments in pseudocode.

Option Analysis:

Option A: The colon (:) is not used to denote comments in pseudocode.
Option B: The double forward slash (//) is the correct symbol for comments in pseudocode.
Option C: Parentheses (()) are not used to denote comments in pseudocode.
Option D: The hash (#) is used in some programming languages but not typically in pseudocode.

Mnemonic: Double slash, slash slash, comment starts.

749. Which of the following devices is specially designed to forward packets to specific ports based on the packet's address?

Correct Answer: Correct answer is: (B) Switching hub.

Exam Relevance: CCNA, CompTIA Network+, CIW Network Specialist

Difficulty: Moderate

Concept notes: A switching hub, also known as a network switch, is designed to forward packets to specific ports based on the packet's address, improving network efficiency and reducing collisions.

Common Mistakes: Students may confuse a switching hub with a regular hub, which broadcasts packets to all connected devices rather than forwarding them to specific ports.

Explanations: A switching hub forwards packets to specific ports based on the packet's address, which is its primary function. This is in contrast to a regular hub, which broadcasts packets to all connected devices, leading to potential collisions and inefficiencies. The switching hub uses the destination address in the packet to determine the correct port for forwarding, making it more efficient and effective in managing network traffic.

Option Analysis:

Option A: A port hub is not a standard term and does not describe a device that forwards packets based on address.
Option B: A switching hub is designed to forward packets to specific ports based on the packet's address, making it the correct answer.
Option C: A filtering hub is not a standard term and does not describe a device that forwards packets based on address.
Option D: A specialty hub is a vague term and does not specifically describe a device that forwards packets based on address.

Mnemonic: Switching hub: "Switches smartly, sends specifically."

750. Refer to the exhibit. A specific Blockly block has a slot on the top. What is the purpose of this slot?

Correct Answer: Correct answer is: (B) The slot allows a block with a bevel tab on the bottom to be connected above the block shown.

Exam Relevance: AP Computer Science Principles, CS50, Blockly-based coding challenges

Difficulty: Easy

Concept notes: In Blockly, blocks are designed to connect with each other through slots and tabs. A slot on the top of a block indicates that another block with a bevel tab on the bottom can be connected above it.

Common Mistakes: Students might confuse the slot with a variable or think it is a topmost block, not understanding the connection mechanism in Blockly.

Explanations: The slot on the top of the block in Blockly is designed to allow another block with a bevel tab on the bottom to be connected above it. This is a fundamental feature of Blockly that enables the creation of complex programs by connecting blocks in a hierarchical manner.

Option Analysis:

Option A: This is incorrect because the slot does not indicate that the block is the topmost block. It indicates the possibility of connecting another block above it.
Option B: This is correct because the slot allows a block with a bevel tab on the bottom to be connected above the block shown.
Option C: This is incorrect because the slot does not specifically require a block with a printer name to be attached above it. It is a general connection point.
Option D: This is incorrect because the slot does not indicate that the block is a variable. It is a connection point for other blocks.

Mnemonic: Slot-Tab Connect

⬅ Previous SetSet 75Next Set ➡

3 thoughts on “Information and Communication Technology MCQ - Set 75”

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 75”

Leave a Reply