NTT Data Information Processing Services Network Engineer L1 Interview Questions and Answers for Experienced

Q1. Roles & responsibilities in WAF
Ans. 
A Web Application Firewall (WAF) is a security solution that monitors and filters HTTP traffic between a web application and the Internet.
• Monitoring and filtering HTTP traffic to protect against common web application attacks such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF)

• Configuring and maintaining rules to block malicious traffic while allowing legitimate traffic to pass throu...read more
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Q1. Compatibility with the job role and current experience
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I have extensive experience in network security and have successfully implemented various security measures in my previous roles.
• I have a strong background in network security protocols and technologies

• I have experience in implementing firewalls, intrusion detection systems, and VPNs

• I have successfully managed security incidents and conducted security audits

• I have a track record of staying up-to-date with the latest se
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Q1. Will be able to do rotational shifts
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Q1. DHCP working principles
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DHCP assigns IP addresses to devices on a network automatically
• DHCP server assigns IP addresses to devices on the network

• DHCP clients request IP addresses from the DHCP server

• DHCP uses a lease mechanism to manage IP address assignments

• DHCP reduces the administrative burden of manually assigning IP addresses
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Q2. DNS working principles
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DNS is a system that translates domain names to IP addresses to locate resources on the internet.
• DNS resolves domain names to IP addresses

• DNS operates through a distributed database system

• DNS uses hierarchical structure with top-level domains like .com, .org, etc.

• DNS queries are resolved through recursive and iterative processes
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Q3. Scenario based question DHCP
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Q4. Spanning tree protocol
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Q1. Question related to retention
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Q2. Question related to aspirations
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Q1. Qtns were asked on bgp,nat,F5,proxy,switches,cloud
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Q1. Tell about your self , what is your strength and weakness, how do you handle pressure, what like to become apart from career. What is more important money or career and why. where do you want to see yourse...read more
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Q1. Salary discussion , joining formalities
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Q1. Basics of networking
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Q2. 3 tier architecture
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Coding test contains 2 questions

Q1. About Switching
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Q2. About Routers switching, LAN, SD-WAN
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