Orange Business L2 Network Engineer Interview Questions and Answers

Q1. 4g 5g volte kpi monitoring
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Q2. Hybrid technology
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Q1. Tell me brief about yourself & what are the roles and responsibilities in day to day work profile? Questions from Nexus switch-- VPC? , steps to create vpc? Switch stacking? How does we can set MAC on ...read more
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Q1. What I carried from my current job and nexus switches questions.
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Q2. How I will achieve the IOS upgrade when only I have 10 minutes left in PE window??
Ans. 
Use pre-staged image and fast transfer methods to achieve IOS upgrade within 10 minutes.
• Pre-stage the image on the device before the upgrade window

• Use fast transfer methods like TFTP or FTP to transfer the image quickly

• Ensure all necessary configurations are saved and backed up before the upgrade

• Have a rollback plan in case of any issues during the upgrade
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Q3. Basic questions on my work and last can I do my job in night shifts?
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Q1. What is my expectations and why
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Q1. What is use of routing and its uses?
Ans. 
Routing is the process of selecting the best path for network traffic to reach its destination.
• Routing helps in directing network traffic efficiently

• It determines the best path for data packets to travel from source to destination

• Routing protocols like OSPF, BGP, and EIGRP are used to exchange routing information

• Routing tables are used to store information about network paths

• Dynamic routing adjusts to network changes a...read more
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Q2. What is IPS? How does it work?
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IPS stands for Intrusion Prevention System. It is a network security technology that monitors network traffic to detect and prevent malicious activities.
• IPS is a network security technology that monitors network traffic in real-time.

• It can detect and prevent malicious activities such as hacking attempts, malware infections, and denial-of-service attacks.

• IPS works by analyzing network packets, comparing them to a databa...read more
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Q3. Firewall works at what layer?
Ans. 
Firewall works at the network layer.
• Firewall operates at the network layer of the OSI model.

• It filters and controls incoming and outgoing network traffic based on predetermined security rules.

• Examples of firewalls include hardware firewalls, software firewalls, and cloud-based firewalls.
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Q4. Define firewall generations and their roles
Ans. 
Firewall generations refer to the evolution of firewall technology and their roles in network security.
• First generation firewalls - packet filtering based on IP addresses and ports

• Second generation firewalls - stateful inspection and improved security features

• Third generation firewalls - application layer filtering and deep packet inspection

• Fourth generation firewalls - next-generation firewalls with advanced threat pr...read more
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Q5. What is IP Spoofing?
Ans. 
IP Spoofing is a technique where an attacker impersonates another device by falsifying IP address in order to gain unauthorized access.
• IP Spoofing involves manipulating the source IP address in a packet to deceive the recipient.

• It is commonly used in DDoS attacks to hide the true source of the attack traffic.

• Prevention methods include implementing ingress and egress filtering on network devices.

• Examples of tools used f...read more
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Basic aptitude knowledge

Strong in java

Round duration - 90 minutes
Round difficulty - Easy

It happens in very friendly manner.

Q1. 
Paths in a Matrix Problem Statement
Given an 'M x N' matrix, print all the possible paths from the top-left corner to the bottom-right corner. You can only move either right (from (i,j) to (i,j+1)) or dow...read more
Ans. 
Print all possible paths from top-left to bottom-right in a matrix by moving only right or down.
• Use backtracking to explore all possible paths from top-left to bottom-right in the matrix.

• At each cell, recursively explore moving right and down until reaching the bottom-right corner.

• Keep track of the current path and add it to the result when reaching the destination.
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Q2. Can you create 2 tables in SQL and perform different operations on them?
Ans. 
Yes, I can create 2 tables in SQL and perform operations like INSERT, SELECT, UPDATE, and DELETE.
• Create Table 1: CREATE TABLE employees (id INT, name VARCHAR(50), salary DECIMAL(10,2));

• Create Table 2: CREATE TABLE departments (dept_id INT, dept_name VARCHAR(50));

• Insert Data: INSERT INTO employees VALUES (1, 'John Doe', 50000);

• Select Data: SELECT * FROM employees WHERE salary > 40000;

• Update Data: UPDATE employees SET...read more
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Round duration - 90 minutes
Round difficulty - Medium

No problem occur very friendly environment.

Round duration - 90 minutes
Round difficulty - Hard

Q1. 
Rat in a Maze Problem Statement
You need to determine all possible paths for a rat starting at position (0, 0) in a square maze to reach its destination at (N-1, N-1). The maze is represented as an N*N ma...read more
Ans. 
Find all possible paths for a rat in a maze from source to destination.
• Use backtracking to explore all possible paths in the maze.

• Keep track of visited cells to avoid revisiting them.

• Explore all possible directions (up, down, left, right) from each cell.

• Add the current direction to the path and recursively explore further.

• If the destination is reached, add the path to the list of valid paths.
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