Praj Industries Graduate Trainee Interview Questions and Answers

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Q1. Question were from computer networks and AI
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Test is about 1 hr and it contains 40 mcqs(both aptitude and coding)

Q1. Level order traversal of binary tree
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Level order traversal of binary tree visits nodes level by level, from left to right.
• Use a queue to keep track of nodes at each level

• Start by pushing the root node into the queue

• While the queue is not empty, dequeue a node, visit it, and enqueue its children
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Q2. Question related to OOPS concepts
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Q1. Change the odd bits in the binary form of a given number and convert the new binary into decimal form
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To change the odd bits in a binary number, flip the bits at odd positions and convert the new binary number to decimal form.
• Start by converting the given number into binary form.

• Identify the odd bits in the binary number (counting from right to left, starting at 1).

• Flip the odd bits by changing 1s to 0s and 0s to 1s.

• Convert the new binary number into decimal form.

• For example, if the given number is 13 (binary 1101), th...read more
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Q2. Primary vs secondary memory
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Primary memory is volatile and directly accessible by the CPU, while secondary memory is non-volatile and used for long-term storage.
• Primary memory is faster but has limited capacity, while secondary memory is slower but has larger capacity.

• Examples of primary memory include RAM and cache memory, while examples of secondary memory include hard drives and SSDs.

• Primary memory stores data that is currently being used by t...read more
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