Tech Mahindra Senior Network Security Engineer Interview Questions and Answers

Q1. Traffic flow of Firewall
Ans. 
Firewall traffic flow refers to the movement of data packets through the firewall based on defined rules and policies.
• Firewall inspects incoming and outgoing traffic to determine if it should be allowed or blocked

• Traffic flow can be controlled using access control lists (ACLs) and security policies

• Firewall can also perform Network Address Translation (NAT) to hide internal IP addresses

• Examples of traffic flow include a...read more
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Q2. Architecture of Firewall
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Firewall architecture involves packet filtering, stateful inspection, and application layer filtering to protect networks.
• Firewall acts as a barrier between internal network and external network

• Packet filtering examines packets based on predefined rules to allow or block traffic

• Stateful inspection tracks the state of active connections to make decisions on allowing or blocking traffic

• Application layer filtering inspect...read more
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Q1. Situation based questions
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Q2. Escalation and P1 cases handled
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Q1. Reason for change
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I am seeking new challenges and opportunities for growth in my career.
• Seeking new challenges to expand my skills and knowledge

• Opportunities for career growth and advancement

• Desire for a change in work environment or company culture
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Q2. Salary expectation
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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
Ans. 
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
Ans. 
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
Ans. 
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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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. What is the full form of HR?
Ans. 
Human Resources
• HR stands for Human Resources

• It is a department within an organization responsible for managing employees

• HR handles recruitment, training, benefits, and employee relations

• Example: The HR department at XYZ Company is in charge of hiring new employees
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Q2. What are the 7 functions of HR?
Ans. 
The 7 functions of HR include recruitment, training, performance management, employee relations, compensation and benefits, compliance, and HR strategy.
• Recruitment: Attracting and hiring qualified candidates for open positions.

• Training: Providing employees with the necessary skills and knowledge to perform their jobs effectively.

• Performance management: Evaluating and improving employee performance through feedback and ...read more
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Q3. Tell me about your self ?
Ans. Hello sir/mam good day First of all thank you for giving me opportunity to introduce myself my name is sujatha I'm 22 years old am rayachoty I have completed b.com computer applications from SV University Sdhr degree college Thirupati my strengths are iam self motivated playing games and reading books. My short term goal is to get a job in a HCl company My long term goal is achieved good position in company in compa...read more
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Q4. Tell me something about our company
Ans. This is one best companies in the corporate world There is good environment. Companies take care of employees and provide good security a good opportunity so very scope is there in the future .
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Q5. How much salary do you expect?
Ans. First of all iama fresher Iam expecting a salary according to the company norms.
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Q6. Do you have any questions for me?
Ans. Yes sir/mam What do you think I should improve myself
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The interview was very good as they asked me my experiences(good & bad) from the day I am professional. How to handle the situations when a senior person makes a mistake. What are the ways of learning that you prefer.

Q1. Which tools have I worked for.
Ans. 
I have worked with a variety of tools as a Network Engineer.
• Cisco Packet Tracer

• Wireshark

• SolarWinds Network Performance Monitor

• Nmap

• GNS3

• Ping

• Traceroute
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Q2. Which technologies I've worked on.
Ans. 
I have worked on a variety of technologies as a Network Engineer.
• Cisco networking equipment

• Routing and switching protocols (e.g. OSPF, BGP)

• Firewalls and security appliances (e.g. Cisco ASA, Palo Alto)

• Network monitoring and management tools (e.g. SolarWinds, Wireshark)

• Virtualization technologies (e.g. VMware, Hyper-V)

• Load balancers (e.g. F5, Citrix NetScaler)

• Wireless networking (e.g. Cisco Meraki, Aruba)

• Network troubles
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Q3. Brief questions on all technologies and technical terms.
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Q1. No questions. Only HR discussions.
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Q1. Scenario based question
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Q2. Routing switching protocols
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Q1. Tell me about youself
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Q2. What are you future perspectives
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Q1. What is your Salary expectation
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Q1. CCNA related topics questions mostly covering switching part
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Q2. ARP concept, situation based questions,port number,
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