Computer Knowledge Practice Question and Answer
8 Q: Which of the following devices tells the difference between multicast and unicast packets?
474 063e62d0b6149271af9b8c4c7
63e62d0b6149271af9b8c4c7- 1multicast switchtrue
- 2developedfalse
- 3advanced routerfalse
- 4multicast routerfalse
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Answer : 1. "multicast switch"
Explanation :
Multicast switch
Q: Sakshat brought by Ministry of Human Resource Development on ICT (Information and Communication Technology) -
756 063aae0b3afa1061146203d3f
63aae0b3afa1061146203d3f- 1There is a book.false
- 2Is a project.false
- 3Is a campaign.false
- 4Is a 'one stop portal'.true
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Answer : 4. "Is a 'one stop portal'."
Explanation :
The pilot project SAKSHAT: A One Stop Education Portal launched on October 30, 2006 by His Excellency, the then President of India to facilitate lifelong learning for students, teachers and those in employment or in pursuit of knowledge free of cost to them
Q: Which of the following are Operators in C?
598 063e62c1aef10d51b16bfe124
63e62c1aef10d51b16bfe124- 1arithmetic operatorsfalse
- 2logical operatorfalse
- 3relational operatorsfalse
- 4all of the abovetrue
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Answer : 4. "all of the above"
Explanation :
Operators are symbols that we use when performing operations on one or more operands. The primary types of operators in C are arithmetic, logical, relational, conditional, bitwise, and assignment.
Q: Why is clrscer() used?
440 063e62bb3e6cd351b75eca59e
63e62bb3e6cd351b75eca59e- 1to erasefalse
- 2to clear the message from the screentrue
- 3to storefalse
- 4for all of the abovefalse
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Answer : 2. "to clear the message from the screen"
Explanation :
The clrscr in C is a built-in function that is used for clearing the screen of the console output during the execution of the C program. This function is defined in the conio. h header file. We need to include the “conio.
Q: What is the difference between do-while and while condition?
581 063e62b5c7407bd1b2d1dd823
63e62b5c7407bd1b2d1dd823- 1In do-while, a semicolon is used after the condition.false
- 2Semicolon is not used in Whilefalse
- 3While statement is after the conditionfalse
- 4none of the abovetrue
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Answer : 4. "none of the above"
Explanation :
The key difference lies in when the loop condition is checked. In the while loop, the condition is checked before the first iteration, potentially resulting in zero iterations. In the do-while loop, the condition is checked after the first iteration, ensuring that the loop body is executed at least once.
Q: Which of the following is not true for for-loop?
553 063e62af66149271af9b8c0fa
63e62af66149271af9b8c0fa- 1for (i=0; ifalse
- 2for (int i=0; i>9; i++)false
- 3for (i=10; ifalse
- 4for (i=10; i++; itrue
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Answer : 4. "for (i=10; i++; i"
Explanation :
Among the given statements about for loops, the one that is NOT true is that they are used to replace user input while loops. While for loops are typically used for iterations with a known count and are less likely to result in an infinite loop if used correctly, they do not specifically replace user input while loops.
Q: Which of the following is the full form of MOOC?
600 063a993e95770eb565d477de4
63a993e95770eb565d477de4- 1Modern Open Online Coursesfalse
- 2Massive Open Online Coursestrue
- 3Massive Online Open Coursesfalse
- 4Mechanical Online Coursesfalse
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Answer : 2. "Massive Open Online Courses"
Explanation :
1. Massive Open Online Courses (MOOC) are changing the world of education by providing free online courses.
2. MOOC is a web-based free distance learning program that ensures the participation of students from geographically remote areas in the field of education.
3. It offers free online courses for higher education, executive education and employee development.
Q: What is the full form of OTP?
738 061a746fa60755647282d4d15
61a746fa60755647282d4d15- 1One the phonefalse
- 2One Time Passwordtrue
- 3Out to practicefalse
- 4One Time Programmablefalse
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Answer : 2. "One Time Password"
Explanation :
1. The full form of OTP is One one-time password.
2. OTP is used as one of the additional security features for secure online transactions.
3. The OTP feature prevents certain types of identity theft by ensuring that a captured username/password pair cannot be used a second time.
4. The user's login name usually remains the same, and the one-time password changes with each login.
5. One-Time Password (aka One-Time Passcode) is a form of strong authentication, providing better security to eBanking, corporate networks, and other sensitive data systems.