TCS Security Specialist Interview Questions and Answers

Q1. SIEM Architecture in Details
Ans. 
SIEM architecture involves collecting, correlating, and analyzing security data from various sources to detect and respond to threats.
• SIEM collects logs and events from network devices, servers, applications, and security tools.

• It correlates and analyzes the data to identify patterns and anomalies that may indicate security incidents.

• SIEM provides real-time monitoring, alerting, and reporting capabilities to help secur...read more
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Q2. Incident Handling Cycle
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Q3. Networking concept
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Q4. Managerial Capability
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Q1. About Security domain basics,
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Q2. AV solutions ,EDR
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Q1. Application security web
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Q2. Mobile application security
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Q1. What is 3 way hand shaking
Ans. 
3 way hand shaking is a process in TCP/IP communication where three packets are exchanged to establish a connection.
• Three packets are involved: SYN, SYN-ACK, ACK

• SYN packet is sent by the client to the server to initiate the connection

• SYN-ACK packet is sent by the server to the client as a response

• ACK packet is sent by the client to the server to confirm the connection
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Q2. What is OSI Model
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The OSI Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.
• The OSI Model stands for Open Systems Interconnection Model.

• It helps in understanding how data is transferred between devices in a network.

• Each layer has specific functions and communicates with the adjacent layers.

• Examples of layers include Physical, Data Link, Network, Transport, Sessio
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Q3. Tell about your work culture
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Q4. Difference between tcp and udp
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TCP is connection-oriented, reliable, and slower, while UDP is connectionless, unreliable, and faster.
• TCP is connection-oriented, meaning it establishes a connection before sending data, while UDP is connectionless.

• TCP is reliable as it ensures all data is received in order and without errors, while UDP does not guarantee delivery.

• TCP is slower due to the overhead of establishing and maintaining connections, while UDP ...read more
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Q5. What is firewall
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A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
• Acts as a barrier between a trusted internal network and untrusted external network

• Filters traffic based on rules set by the network administrator

• Can be hardware-based or software-based

• Examples include Cisco ASA, Palo Alto Networks, and pfSense
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Q1. Tell me about yourself
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I am a dedicated Security Analyst with a strong background in cybersecurity and risk management.
• Experienced in conducting security assessments and identifying vulnerabilities

• Skilled in implementing security measures to protect against cyber threats

• Proficient in analyzing security incidents and responding effectively

• Certified in relevant security certifications such as CISSP or CISM
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Q1. Different types of malware
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Malware refers to malicious software designed to disrupt, damage, or gain unauthorized access to a computer system.
• Viruses: self-replicating programs that infect other files on a computer

• Worms: standalone malware that spreads across networks

• Trojans: disguised as legitimate software to trick users into installing them

• Ransomware: encrypts files and demands payment for decryption

• Spyware: secretly gathers information about...read more
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Q2. What would you first do if a machine is infected
Ans. 
The first step would be to isolate the infected machine from the network to prevent further spread of the infection.
• Isolate the infected machine from the network to prevent further spread of the infection

• Identify the type of malware or virus that has infected the machine

• Run a full system scan using antivirus software to detect and remove the malware

• Update the operating system and all software to patch any vulnerabiliti...read more
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Q1. Some basics about network security What is NGFW? What is ips
Ans. Ips is intrusion prevention system to prevent the organisation from attacker. Ngfw is next generation firewalls as advance firewalls.
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Q2. About my past experience About myself
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Quants and Reasoning

Q1. What is threat,risk and VM?
Ans. 
Threat is a potential danger that can exploit a vulnerability, Risk is the likelihood of a threat occurring and causing harm, and VM stands for Vulnerability Management.
• Threat: potential danger that can exploit a vulnerability

• Risk: likelihood of a threat occurring and causing harm

• VM: Vulnerability Management

• Threats can be external or internal

• Risk can be calculated by assessing the likelihood and impact of a threat

• VM in...read more
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Q2. What is OSI model and asked about the layers
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Q1. What are my salary expectations
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Q2. What is preferred location
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Q1. We should become ready to go to next level
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