McDermott International Interview Questions and Answers

Wireshark is a network protocol analyzer used for troubleshooting, analysis, software and communication protocol development.

• Wireshark captures and displays the data traveling back and forth on a network in real time.

• It allows users to analyze network traffic and pinpoint issues such as latency, packet loss, and security vulnerabilities.

• The tool can be used for network troubleshooting, protocol development, network security analysis, and education.

• Wireshark supports various p...read more

Cyber kill chain is a framework that describes the stages of a cyber attack.

• It consists of seven stages: reconnaissance, weaponization, delivery, exploitation, installation, command and control, and actions on objectives.

• The framework helps organizations understand and defend against cyber attacks.

• For example, by identifying the stage of an attack, organizations can take appropriate measures to prevent or mitigate the damage.

• The cyber kill chain is often used in conjunction w...read more

The OSI model is a conceptual framework for understanding how data is transmitted over a network.

• OSI stands for Open Systems Interconnection

• It has 7 layers, each with a specific function

• The layers are: Physical, Data Link, Network, Transport, Session, Presentation, Application

• Each layer communicates with the layer above and below it

• Example: When you visit a website, the Application layer sends a request to the Transport layer, which breaks it into smaller packets and sends it...read more

Ethical hacking involves a systematic approach to identify and exploit vulnerabilities in a system with the owner's permission.

• Obtain permission from the system owner

• Gather information about the target system

• Identify potential vulnerabilities

• Exploit the vulnerabilities to gain access to the system

• Document the findings and report them to the system owner

• Provide recommendations for improving the system's security

The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven different layers.

• The OSI model stands for Open Systems Interconnection model.

• It helps in understanding how different networking protocols work together.

• The seven layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

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

• For example, HTTP operat...read more

Manual testing involves executing test cases without the use of automation tools.

• Understanding the requirements and creating test cases

• Executing test cases manually

• Recording test results and reporting defects

• Regression testing to ensure previous issues are fixed

• Exploratory testing to find new issues