10+ DYNAMIC DRILLING Interview Questions and Answers

Factorial of a number can be calculated using both iterative and recursive methods.

• Iterative method involves using a loop to multiply numbers from 1 to n.

• Recursive method involves calling the function with n-1 until n reaches 1.

• Example: Factorial of 5 using iterative method: 5! = 5*4*3*2*1 = 120

• Example: Factorial of 5 using recursive method: 5! = 5 * 4!

• Example: Factorial of 4 using recursive method: 4! = 4 * 3!

A linked list is a data structure that consists of a sequence of nodes, each containing a reference to the next node.

• Each node has a data field and a next field that points to the next node

• Insertion and deletion can be done efficiently

• Traversal starts from the head node and continues until the end node is reached

Join queries are used to combine data from multiple tables based on a related column between them.

• Use JOIN keyword to combine tables based on a common column

• Specify the columns to select from each table

• Use WHERE clause to specify the join condition

Print numbers in a tree format

• Use recursion to print numbers in a tree structure

• Start with the root node and recursively print child nodes

• Use indentation to represent levels in the tree

• Example: 1 --2 ----3 --4

C++ program to implement queue using linked list and class

• Create a class for queue and node

• Implement enqueue, dequeue, and display functions

• Use pointers to link nodes in the linked list

DPDK core queue threads work by directly accessing NIC hardware queues for packet processing, bypassing the kernel for improved performance.

• DPDK core queue threads are used to handle packet processing in a multi-core environment.

• These threads directly access NIC hardware queues to receive and transmit packets.

• By bypassing the kernel, DPDK achieves lower latency and higher throughput for network applications.

• DPDK provides APIs for managing core queue threads and interacting wi...read more

Reverse each word in a string and print the sentence

• Split the string into words

• Reverse each word using built-in function or loop

• Join the reversed words to form a sentence

Program to find the sequence order of a number

• Create an array to store the sequence order

• Iterate through the numbers from 1 to the given number

• Check if each number is divisible by the given number

• If divisible, add it to the sequence order array

• Return the sequence order array

Threads in operating system are lightweight processes that share the same memory space and resources.

• Threads allow for concurrent execution within a single process

• Threads share the same memory space, allowing for efficient communication and data sharing

• Threads can be created and managed by the operating system or by the application itself

• Examples of threading models include user-level threads and kernel-level threads

Program to sort an array of strings in ascending order

• Use a sorting algorithm like bubble sort, selection sort, or merge sort

• Compare adjacent elements and swap them if they are in the wrong order

• Repeat this process until the array is sorted

OS stands for Operating System. It is a software that manages computer hardware and provides services for computer programs.

• OS acts as an intermediary between the computer hardware and software applications

• It manages resources such as memory, processors, devices, and file systems

• Examples of OS include Windows, macOS, Linux, and Unix

4G attach call flow involves multiple steps for a device to connect to the network.

• Device sends attach request to the network

• Network validates the request and assigns temporary identity (TMSI)

• Network sends attach accept message to device

• Device sends attach complete message to confirm attachment

• Network updates location of device in Home Location Register (HLR)

Handover scenarios involve transferring a call or data session from one cell to another in a seamless manner.

• Handover can be triggered by factors like signal strength, congestion, or user mobility.

• Types of handover include hard handover (disconnecting from one cell before connecting to another) and soft handover (connecting to multiple cells simultaneously).

• Handover can occur within the same network (intra-cellular handover) or between different networks (inter-cellular hando...read more

Threading is a programming technique that allows multiple tasks to run concurrently within a single process.

• Threading allows for parallel execution of tasks within a program.

• Threads share the same memory space, allowing for efficient communication and data sharing.

• Examples of threading in programming languages include Java's Thread class and Python's threading module.

The 7 layers of networking refer to the OSI model, which is a conceptual framework used to understand how networks operate.

• Physical layer: Deals with physical connections and hardware (e.g. cables, switches)

• Data link layer: Manages data transfer between devices on the same network (e.g. Ethernet)

• Network layer: Handles routing and forwarding of data packets (e.g. IP)

• Transport layer: Ensures data is delivered reliably and error-free (e.g. TCP)

• Session layer: Manages communicatio...read more