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Class 8 Exam  >  Class 8 Tests  >  National Cyber Olympiad Class 8  >  Olympiad Test: High Order Thinking Skills - 3 - Class 8 MCQ

Olympiad Test: High Order Thinking Skills - 3 - Class 8 MCQ


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10 Questions MCQ Test National Cyber Olympiad Class 8 - Olympiad Test: High Order Thinking Skills - 3

Olympiad Test: High Order Thinking Skills - 3 for Class 8 2024 is part of National Cyber Olympiad Class 8 preparation. The Olympiad Test: High Order Thinking Skills - 3 questions and answers have been prepared according to the Class 8 exam syllabus.The Olympiad Test: High Order Thinking Skills - 3 MCQs are made for Class 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: High Order Thinking Skills - 3 below.
Solutions of Olympiad Test: High Order Thinking Skills - 3 questions in English are available as part of our National Cyber Olympiad Class 8 for Class 8 & Olympiad Test: High Order Thinking Skills - 3 solutions in Hindi for National Cyber Olympiad Class 8 course. Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free. Attempt Olympiad Test: High Order Thinking Skills - 3 | 10 questions in 20 minutes | Mock test for Class 8 preparation | Free important questions MCQ to study National Cyber Olympiad Class 8 for Class 8 Exam | Download free PDF with solutions
Olympiad Test: High Order Thinking Skills - 3 - Question 1
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Which of the following statements hold(s) true about telnet?
Statement 1: It allows connecting to remote computers.
Statement 2: It only allows buying and selling online products.

Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 1
Telnet is a protocol that allows users to connect to remote computers over a network. It does not have any functionality related to buying and selling products online, making Statement 2 incorrect.
Olympiad Test: High Order Thinking Skills - 3 - Question 2
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Which of the following statements hold(s) true about RAID technology?
Statement 1: RAID can improve data redundancy.
Statement 2: RAID can improve data read/write speed.

Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 2
RAID (Redundant Array of Independent Disks) technology can improve data redundancy by storing data across multiple disks, and it can also improve read/write speed by allowing data to be accessed from multiple disks simultaneously.
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Olympiad Test: High Order Thinking Skills - 3 - Question 3
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Which of the following statements hold(s) true about encryption?
Statement 1: Encryption ensures that data is accessible only to authorized users.
Statement 2: Encryption converts data into a format that is readable by anyone.

Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 3
Encryption is a process that converts data into a coded format, ensuring that it can only be accessed by authorized users who have the decryption key. Statement 2 is incorrect because encryption makes data unreadable to unauthorized users.
Olympiad Test: High Order Thinking Skills - 3 - Question 4
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Which of the following statements hold(s) true about machine learning?
Statement 1: Supervised learning requires labeled data.
Statement 2: Unsupervised learning does not use labeled data.
Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 4
Supervised learning involves training a model on labeled data, while unsupervised learning works with data that does not have labels, identifying patterns and structures within the data.
Olympiad Test: High Order Thinking Skills - 3 - Question 5
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Which of the following statements hold(s) true about blockchain?
Statement 1: Blockchain uses a centralized ledger to record transactions.
Statement 2: Blockchain ensures data integrity through a decentralized network.
Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 5
Blockchain uses a decentralized ledger to record transactions, ensuring data integrity and security through consensus mechanisms. Statement 1 is incorrect because blockchain does not use a centralized ledger.
Olympiad Test: High Order Thinking Skills - 3 - Question 6
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Which of the following statements hold(s) true about HTTP and HTTPS?
Statement 1: HTTP encrypts data before transmission.
Statement 2: HTTPS provides a secure, encrypted connection.
Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 6
HTTPS (Hypertext Transfer Protocol Secure) encrypts data before transmission, providing a secure connection. HTTP does not encrypt data, making it less secure. Thus, only Statement 2 is correct.
Olympiad Test: High Order Thinking Skills - 3 - Question 7
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Which of the following statements hold(s) true about virtual memory?
Statement 1: Virtual memory extends the available memory on a system.
Statement 2: Virtual memory is slower than physical RAM.
Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 7
Virtual memory allows a system to use disk space as an extension of RAM, effectively increasing the available memory. However, it is slower than physical RAM because accessing data from the disk takes more time.
Olympiad Test: High Order Thinking Skills - 3 - Question 8
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Which of the following statements hold(s) true about relational databases?
Statement 1: Relational databases use tables to store data.
Statement 2: Each table in a relational database must have a unique primary key.
Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 8
Relational databases store data in tables, and each table must have a unique primary key to uniquely identify each record. Both statements are true.
Olympiad Test: High Order Thinking Skills - 3 - Question 9
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Which of the following statements hold(s) true about phishing attacks?
Statement 1: Phishing attacks often involve fake websites or emails to steal information.
Statement 2: Phishing attacks can be mitigated by verifying the authenticity of the source.
Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 9
Phishing attacks typically involve tricking users with fake websites or emails to steal sensitive information. These attacks can be mitigated by verifying the authenticity of the source and being cautious of unsolicited communications.
Olympiad Test: High Order Thinking Skills - 3 - Question 10
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Which of the following statements hold(s) true about data compression?
Statement 1: Data compression reduces the size of data files.
Statement 2: Data compression always results in loss of data quality.
Detailed Solution for Olympiad Test: High Order Thinking Skills - 3 - Question 10
Data compression reduces the size of data files, but it does not always result in loss of data quality. Lossless compression retains data quality, while lossy compression sacrifices some quality for smaller file sizes. Thus, Statement 2 is incorrect.
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