Wireshark is an open-source, free network protocol analysis tool used for inspecting and analyzing network traffic. Employers often include questions about Wireshark on interviews to test the knowledge of prospective job candidates. Asking questions about Wireshark can help employers determine the candidates’ knowledge and experience with network protocol analysis. This blog post will provide a comprehensive list of Wireshark interview questions and answers to help prepare you for your upcoming job interview. We’ll discuss interview topics such as basic functionality, filters, and use cases for Wireshark. All of the questions and answers in this post are professional and have been refined to help ensure success in your next Wireshark job interview. By the time you finish reading this blog post, you’ll feel confident and prepared to answer any Wireshark interview questions with ease.
What is ARP? | Wireshark | Interview Questions | Networking
At myTectra, we assist you in selecting the appropriate Python career path. Here are the top courses in Python one can select. Learn More →.
Data sent between two devices over a network is encrypted by SSL connections in order to function. Anyone trying to intercept the data will find it challenging to decipher thanks to this encryption. Both devices must have an SSL certificate in order to establish an SSL connection. The certificate includes a public key for encrypting data and a private key for decrypting it.
When using encryption keys for authentication, it’s possible that the process could be compromised if the keys are misplaced or stolen. Another problem is that improper key management could allow them to be used in an unauthorized manner, which could compromise security.
TCP is a connection-oriented protocol, so before any data can be transferred between two devices, a connection must first be established. Data can be sent using UDP, which is a connectionless protocol, without first establishing a connection. UDP would be the preferred protocol for real-time chat applications because it is quicker and has less overhead than TCP.
A network protocol analyzer called Wireshark can be used to diagnose problems with networks and track traffic. It’s crucial to be ready to discuss your prior experience with and familiarity with Wireshark when applying for a job that will require its use. The most typical Wireshark interview queries are covered in this article, along with advice on how to respond to them.
The process of converting a domain name into an IP address is known as DNS resolution. Computers use IP addresses to communicate with one another, but people find it much simpler to remember and use domain names. Using the “nslookup” command, you can manually test DNS resolution
During an interview I was asked to answer this question the best I could, I know I didnt do well, lets see what the right ones are – “A PC is booted for the first time with a static IP on a LAN segment with no other hosts, the user types in http://www.google.com in the browser, if wireshark was running on that link, what all packets would show up in the capture?”
When a ping is sent, a ping response ought to be received. The ping response might be blocked by a firewall if it is not received. To check, icmp reply packets should be filtered on wireshark.
8. A user submits a ticket claiming that he can ping any IP address on the internet but is unable to access any websites. How would you use wireshark to identify the problem.
9. You cannot ping a specific PC on the network. You should determine whether the PC’s firewall is preventing the ping from being sent. How can you do it with wireshark.
1. You must keep an eye on every packet that comes in from the IP address 192. 168. 1. 1 on a particular system. Which wireshark filter would you use.
2. Which filter would you employ in Wireshark to track ping packets on a network?
FAQ
What are the four main uses of Wireshark?
- Network administrators use it to troubleshoot network problems.
- Network security engineers use it to examine security problems.
- QA engineers use it to verify network applications.
- Developers use it to debug protocol implementations.
What are the main functions of Wireshark?
There are many applications for Wireshark, including troubleshooting networks with performance issues. Wireshark is frequently used by cybersecurity experts to trace connections, view the content of questionable network transactions, and detect bursts of network traffic.
What type of packets can be captured by Wireshark?
Wireshark is a packet sniffer and analysis tool. It captures network traffic from ethernet, Bluetooth, wireless (IEEE. 802. 11, token ring, and frame relay connections, among others, and stores the information for later offline analysis.
Why is Wireshark not capturing packets?
One issue you’ll probably encounter is that after beginning a capture using your current 802 protocol, Wireshark might not display any packets. 11 client card, especially if running in Windows. The issue is that many of the 802. 11 cards don’t support promiscuous mode.
