TCS Technical Specialist Interview Questions and Answers for Freshers

Static class and static constructor in C#

• Static class can only contain static members and cannot be instantiated

• Static constructor is called only once when the class is first accessed

• Static constructor is used to initialize static members of the class

• Example: Math class in C# is a static class

• Example: static constructor can be used to initialize a static variable with a value

Performance improvement in Angular app

• Use lazy loading to load modules on demand

• Optimize change detection strategy

• Use trackBy function in ngFor loops

• Minimize DOM manipulation

• Use AOT compilation

• Implement server-side rendering

• Use web workers for heavy computations

• Use caching for frequently accessed data

Performing web application penetration testing on a website with firewall enabled.

• Identify the type of firewall and its configuration

• Perform reconnaissance to gather information about the target

• Identify vulnerabilities and exploit them

• Use tools like Burp Suite, Nmap, and Metasploit

• Test for common web application vulnerabilities like SQL injection and cross-site scripting

• Document findings and provide recommendations for

KEDB stands for Known Error Database, which is a repository of all known errors and their workarounds.

• KEDB is used in IT service management to improve incident management and problem management processes.

• It helps in identifying and resolving known errors quickly, reducing downtime and improving service quality.

• KEDB contains information about the root cause of the error, its symptoms, and the steps to resolve it.

• Example...read more

I remain calm, listen actively, empathize, apologize, offer solutions, and follow up.

• Remain calm and professional throughout the call.

• Listen actively to the customer's concerns and let them vent.

• Empathize with the customer and acknowledge their frustration.

• Apologize for the inconvenience caused and take responsibility.

• Offer solutions to resolve the issue and ask for their input.

• Follow up with the customer to ensure the...read more

Steps for Azure migration from onprem to cloud and Hyper V migration using VMWARE tool.

• Assess on-premises environment

• Choose appropriate migration method

• Prepare Azure environment

• Migrate data and applications

• Optimize and secure migrated resources

• VMware tool used for migration: VMware vCenter Converter

• Hyper-V migration can be done using Azure Site Recovery