NTT Data Senior Network Security Engineer Interview Questions and Answers

Q1. Explain the role of Virtual router and virtual system
Ans. 
Virtual router and virtual system play a crucial role in network security by providing isolated environments for routing and security policies.
• Virtual router is a software-based routing instance that operates within a virtualized environment.

• Virtual system is a logical division of a physical firewall that allows for separate security policies and configurations.

• Both virtual router and virtual system help in creating is...read more
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Q2. What is app-id, content-id
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App-ID and Content-ID are features used in network security to identify and control applications and content.
• App-ID is used to identify applications based on their behavior, not just port and protocol

• Content-ID is used to identify and control content within applications

• Both features are commonly used in next-generation firewalls for advanced security policies

• Example: App-ID can identify and block social media applicati...read more
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Q1. What is U-turn Nat
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U-turn NAT is a network configuration where traffic enters and exits the same interface on a network device.
• U-turn NAT is also known as hairpin NAT or NAT loopback.

• It allows internal hosts to access resources using their public IP address from within the same network.

• This is commonly used in scenarios where internal hosts need to access a server using its public IP address.

• U-turn NAT can be configured on firewalls or r
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Q2. What is service route
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A service route is the path that a service takes to reach its destination, including all the network devices it passes through.
• Service routes can include routers, switches, firewalls, and other network devices.

• Understanding service routes is important for network security to identify potential vulnerabilities or points of failure.

• Examples of service routes include the path an email takes from sender to recipient, or th...read more
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Q3. What is wildfire
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Wildfire is a type of malware analysis service provided by Palo Alto Networks.
• Malware analysis service

• Identifies and blocks unknown threats in real-time

• Utilizes machine learning and AI for threat detection
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It is online test. In this test there is question of apti and also coding and from 5g question.

There are two questions asked and time is enough to solve 60 minutes

Q1. Wap for palindrome number
Ans. 
A palindrome number is a number that remains the same when its digits are reversed.
• Convert the number to a string

• Reverse the string

• Check if the reversed string is equal to the original string
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Q2. Add two numbers by function
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Create a function to add two numbers
• Define a function that takes two parameters as input

• Inside the function, add the two numbers together and return the result

• Example: function addNumbers(num1, num2) { return num1 + num2; }
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Q3. Write a code for Binary search
Ans. 
Binary search code implementation in Python
• Define a function that takes a sorted array and a target value as input

• Initialize two pointers, low and high, to the start and end of the array respectively

• While low is less than or equal to high, calculate mid as (low + high) // 2 and compare array[mid] with target

• If array[mid] is equal to target, return mid

• If array[mid] is less than target, update low to mid + 1

• If array[mid]...read more
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Q4. Wap for check your name is palindrome not
Ans. 
A program to check if a given name is a palindrome or not.
• Convert the name to lowercase to handle case-insensitivity

• Remove any spaces or special characters from the name

• Reverse the name and compare it with the original name to check for palindrome
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Q5. What is malloc and calloc function
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malloc and calloc are functions in C programming used for dynamic memory allocation.
• malloc function is used to allocate a single block of memory of a specified size.

• calloc function is used to allocate multiple blocks of memory of a specified size, initialized to zero.

• Example: int *ptr = (int*)malloc(5 * sizeof(int));

• Example: int *ptr = (int*)calloc(5, sizeof(int));
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Q1. BGP and ospf and vlan
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Q2. VSS and stacking switch
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Q1. BGP in depth ospf and vlan
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Q2. Vss and switch stacking switch routing
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Normal aptitude group discussion assignment case study

Coding test assignment one on one round

Q1. Technical vs no tech
Ans. 
Technical skills are essential for a Network Engineer, but soft skills are also important for effective communication and teamwork.
• Technical skills are necessary for configuring and troubleshooting network devices.

• Soft skills like communication, teamwork, and problem-solving are crucial for working effectively with colleagues and clients.

• Balancing technical expertise with interpersonal skills is key to success in the r...read more
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Q2. Dhcp vs dns gdp vs rdp frp vs 30nd
Ans. 
DHCP is a protocol used to assign IP addresses dynamically to devices on a network, while DNS is a system that translates domain names to IP addresses.
• DHCP assigns IP addresses to devices on a network dynamically

• DNS translates domain names to IP addresses

• RDP (Remote Desktop Protocol) allows users to remotely connect to a computer

• FRP (Fiberglass Reinforced Plastic) is a material used in construction

• 30nd does not seem to
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Q1. Introduction of myself
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Q2. Difference between c and c++
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C is a procedural programming language while C++ is an object-oriented programming language.
• C is a procedural programming language, while C++ is a combination of procedural and object-oriented programming.

• C does not support classes and objects, while C++ does.

• C is a subset of C++, meaning all valid C programs are also valid C++ programs.

• C++ has additional features like function overloading, templates, and exception han
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Q1. Introduction 🤣
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Q2. Tell me your weakness ? 🤣
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Q1. Question related to retention
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Q2. Question related to aspirations
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