Computer Science & IT

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Q. What is the best-case time complexity of Merge Sort?
  • A. O(n)
  • B. O(n log n)
  • C. O(log n)
  • D. O(n^2)
Q. What is the best-case time complexity of Quick Sort?
  • A. O(n)
  • B. O(n log n)
  • C. O(log n)
  • D. O(n^2)
Q. What is the broadcast address for the subnet 192.168.1.0/24?
  • A. 192.168.1.255
  • B. 192.168.1.0
  • C. 192.168.1.1
  • D. 192.168.1.254
Q. What is the broadcast address for the subnet 192.168.10.0/24?
  • A. 192.168.10.0
  • B. 192.168.10.255
  • C. 192.168.10.1
  • D. 192.168.10.128
Q. What is the CIDR notation for a subnet mask of 255.255.255.128?
  • A. /25
  • B. /26
  • C. /27
  • D. /24
Q. What is the CIDR notation for a subnet mask of 255.255.255.192?
  • A. /24
  • B. /26
  • C. /28
  • D. /30
Q. What is the CIDR notation for a subnet mask of 255.255.255.224?
  • A. /24
  • B. /25
  • C. /26
  • D. /27
Q. What is the CIDR notation for a subnet mask of 255.255.255.248?
  • A. /24
  • B. /25
  • C. /26
  • D. /29
Q. What is the color property of a Red-Black tree?
  • A. Every node is either red or blue.
  • B. Every node is either red or black.
  • C. Every node is either black or white.
  • D. Every node is either green or red.
Q. What is the correct syntax to include a header file in C?
  • A. #include <header.h>
  • B. #include 'header.h'
  • C. #include header.h
  • D. #include <header>
Q. What is the default port number for HTTP?
  • A. 21
  • B. 25
  • C. 80
  • D. 443
Q. What is the default subnet mask for a Class C IP address?
  • A. 255.0.0.0
  • B. 255.255.0.0
  • C. 255.255.255.0
  • D. 255.255.255.255
Q. What is the difference between 'on-policy' and 'off-policy' learning?
  • A. On-policy learns from the current policy, off-policy learns from a different policy
  • B. On-policy uses supervised learning, off-policy uses unsupervised learning
  • C. On-policy is faster than off-policy
  • D. There is no difference
Q. What is the effect of adding more features to a linear regression model?
  • A. Always improves model performance
  • B. Can lead to overfitting
  • C. Reduces interpretability
  • D. Both B and C
Q. What is the effect of adding more predictors to a linear regression model?
  • A. Always improves model accuracy
  • B. Can lead to overfitting
  • C. Reduces the complexity of the model
  • D. Eliminates multicollinearity
Q. What is the effect of increasing the number of trees in a Random Forest?
  • A. It always increases the training time.
  • B. It can improve model accuracy but may lead to diminishing returns.
  • C. It decreases the model's interpretability.
  • D. It reduces the model's variance but increases bias.
Q. What is the effect of increasing the regularization parameter (C) in SVM?
  • A. Increases the margin width
  • B. Decreases the margin width
  • C. Increases the number of support vectors
  • D. Decreases the number of support vectors
Q. What is the effect of multicollinearity in a linear regression model?
  • A. It improves model accuracy
  • B. It makes coefficient estimates unstable
  • C. It has no effect on the model
  • D. It simplifies the model
Q. What is the effect of multicollinearity on a linear regression model?
  • A. It improves model accuracy
  • B. It makes coefficient estimates unstable
  • C. It has no effect on the model
  • D. It simplifies the model
Q. What is the effect of outliers on a linear regression model?
  • A. They have no effect
  • B. They can significantly skew the results
  • C. They improve the model's accuracy
  • D. They only affect the intercept
Q. What is the effect of outliers on K-means clustering?
  • A. They have no effect on the clustering results
  • B. They can significantly distort the cluster centroids
  • C. They improve the clustering accuracy
  • D. They help in determining the number of clusters
Q. What is the effect of using a linear kernel in SVM?
  • A. It allows for non-linear decision boundaries
  • B. It simplifies the model and reduces computation
  • C. It increases the risk of overfitting
  • D. It can only classify linearly separable data
Q. What is the effect of using a soft margin in SVM?
  • A. It allows some misclassifications
  • B. It increases the model complexity
  • C. It reduces the number of support vectors
  • D. It guarantees a perfect classification
Q. What is the effect of using a very small value for the regularization parameter 'C' in SVM?
  • A. Increased model complexity
  • B. Increased margin width
  • C. More misclassifications
  • D. Decreased training time
Q. What is the effect of using binary search on a linked list?
  • A. Faster than array
  • B. Slower than array
  • C. Same as array
  • D. Not applicable
Q. What is the effect of using polynomial features in a linear regression model?
  • A. It reduces the model complexity
  • B. It can capture non-linear relationships
  • C. It increases the risk of underfitting
  • D. It eliminates multicollinearity
Q. What is the first step in Dijkstra's algorithm?
  • A. Select the node with the smallest tentative distance
  • B. Initialize all distances to infinity
  • C. Mark all nodes as unvisited
  • D. Add all edges to the priority queue
Q. What is the first usable IP address in the subnet 10.0.0.0/22?
  • A. 10.0.0.1
  • B. 10.0.0.0
  • C. 10.0.3.255
  • D. 10.0.0.2
Q. What is the first usable IP address in the subnet 10.0.0.0/24?
  • A. 10.0.0.0
  • B. 10.0.0.1
  • C. 10.0.0.255
  • D. 10.0.1.0
Q. What is the first valid host address in the subnet 192.168.1.0/24?
  • A. 192.168.1.0
  • B. 192.168.1.1
  • C. 192.168.1.255
  • D. 192.168.1.254
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