I literally forgot what is a packet in networking during an interview so here it is to redeem my self.
Interviewer: “What is a packet in networking?”
Interviewee: “Uh, a packet is a small unit of data that is transmitted over a network, right?”
Interviewer: “Yes, that’s correct. And can you tell me what the different parts of a packet are?”
Interviewee: “Uh, the header, the payload, and the footer?”
Interviewer: “Yes, that’s correct. But for a moment there, it looked like you had forgotten what a packet was. Do you have a good reason for that?”
Interviewee: “Well, I guess I just got a little bit packet-knocked!” HAHA!!
In networking, a packet is a small unit of data that is transmitted over a network. It is a standardized format for transmitting data, which allows different devices and systems to communicate with each other.
Packets are typically composed of several different parts, including:
- Header: The header is a set of information that is added to the beginning of the packet. It typically includes information about the source and destination of the packet, as well as other details such as the packet’s type, size, and any error-checking information.
- Payload: The payload is the actual data being transmitted in the packet. It can be anything from a simple message to a large file.
- Footer: The footer is a set of information that is added to the end of the packet. It may include error-checking information or other data.
Packets are an important concept in networking because they allow data to be transmitted efficiently and reliably between devices. By breaking the data into small packets and transmitting them separately, the network can more easily handle traffic and errors can be detected and corrected more easily.
I think during the interview I forgot because I am so used to using Wireshark so I just basically scan for Ips in Wireshark, Even though the parts of a packet are right there in front of my face while looking at it, I got a bad brain and I do forget a lot sometimes and I am horrible with interviews, I am getting better though. I lie to myself and just say I am good at interviews though.
Wireshark is a powerful network protocol analyzer tool that is commonly used to troubleshoot network issues and analyze packet data. Here are some steps you can follow to use Wireshark:
- Download and install Wireshark: You can download Wireshark from the official website (https://www.wireshark.org/) and install it on your computer.
- Start Wireshark: Once Wireshark is installed, launch the program. You may need to select a network interface to capture packets from.
- Capture packets: To begin capturing packets, click the “Start” button in the Wireshark interface. You can also use a capture filter to specify the types of packets you want to capture.
- Analyze packets: As packets are captured, they will be displayed in the Wireshark interface. You can use the various tools and filters in Wireshark to analyze the packets and understand the data they contain.
- Save and export packets: You can save the captured packets to a file for later analysis or export them to another format, such as CSV or XML.
Using Wireshark requires a certain level of familiarity with networking protocols and terminology. If you are new to Wireshark, it may be helpful to take some time to learn about the different features and functions of the tool. There are also many resources available online, such as tutorials and documentation, that can help you get started with Wireshark.
There is also Tshark which is the command line version of Wireshark.
Any way this is all for now!
PEACE!
