20 Telnet Interview Questions and Answers

Telnet is a network protocol that allows you to remotely access computer systems. When interviewing for a position that involves Telnet, you can expect to be asked questions about your experience and knowledge of the protocol. In this article, we will review some of the most common Telnet interview questions and provide tips on how to answer them.

Telnet Interview Questions and Answers

Here are 20 commonly asked Telnet interview questions and answers to prepare you for your interview:

1. What is Telnet?

Telnet is a network protocol that allows for remote control of a computer. It is most commonly used to remotely access servers in order to manage them or to run commands.

2. Can you explain how to access a remote computer using the Windows command prompt?

To access a remote computer using the Windows command prompt, you will need to use the Telnet program. Telnet allows you to connect to a remote computer and run commands as if you were on that computer. To connect to a remote computer using Telnet, you will need to open the Telnet program and type in the address of the remote computer.

3. Can you explain how to enable telnet on windows 10?

To enable telnet on Windows 10, you will need to first open the Control Panel. From there, you will need to open the Programs and Features section. Once inside of Programs and Features, you will need to select the Turn Windows Features on or off option. From there, you will need to check the box next to Telnet Client, and then click OK.

4. How can you change the port number used by telnet in Tomcat?

You can change the port number used by telnet in Tomcat by editing the server.xml file. Look for the Connector port=”8080″ line and change the 8080 to the new port number you want to use.

5. How do you configure your router to use telnet?

In order to configure your router to use telnet, you will need to first enable the telnet service on your router. This can be done by logging into your router and going into the configuration settings. Once the telnet service is enabled, you will need to specify the IP address or hostname of the router that you want to connect to. You will also need to specify the port that you want to use for the connection. The default port for telnet is 23.

6. How do you test if a TCP/IP port is open in Linux?

You can test if a TCP/IP port is open in Linux by using the telnet command. For example, if you want to test if port 80 is open, you would type telnet localhost 80. If the port is open, you will see a blank screen. If the port is closed, you will see a message that says “Connection refused.”

7. What are some best practices for securing a telnet server?

In general, you will want to make sure that only authorized users have access to your telnet server. This can be done through a variety of methods, such as setting up user accounts and passwords, using encryption, or using a firewall. You will also want to make sure that your telnet server is kept up to date with the latest security patches.

8. What’s the difference between FTP and Telnet?

FTP is a file transfer protocol, while Telnet is a remote login protocol. With FTP, you can transfer files between two computers. With Telnet, you can remotely access another computer as if you were sitting in front of it.

9. What is SSH? Is it different from telnet?

SSH is a secure protocol for accessing remote servers. It is different from telnet in that it encrypts all data that is exchanged between the client and server, making it much more secure.

10. What happens when you enter “telnet” at the command prompt?

When you enter “telnet” at the command prompt, you are opening a Telnet session. This session allows you to connect to a remote host and enter commands as if you were sitting at the host’s console.

11. What does the -l option do in the telnet command?

The -l option is used to specify a login name when connecting to a remote system via the telnet command.

12. How do I know if my ISP blocks incoming connections over telnet?

One way to test if your ISP blocks incoming connections over telnet is to try to connect to your own computer from another computer on the same network. If the connection is successful, then your ISP is not blocking telnet traffic.

13. How do I find out which version of ssh or telnet is running on my system?

To find out which version of ssh or telnet is running on your system, you can use the -V option with the ssh or telnet command. For example, to find out the version of ssh running on your system, you would use the command “ssh -V”.

14. How do I connect to an existing session that was started with the ?n switch?

You can use the “newgrp” command to connect to an existing session that was started with the ?n switch.

15. How do I get back to the main menu after opening a new connection?

You can get back to the main menu by typing “menu” at the command prompt.

16. How do I list all active sessions?

To list all active sessions, you can use the “ls” command.

17. What are the differences between TELNET, HTTP, and HTTPS protocols?

TELNET is a text-based protocol that allows users to connect to a remote host and issue commands. HTTP is a text-based protocol that allows users to request and receive web pages from a server. HTTPS is a secure version of HTTP that uses SSL/TLS to encrypt communication between the client and server.

18. What is a virtual terminal?

A virtual terminal is a software implementation of a terminal emulator that allows a user to access a remote computer as if they were physically present at the computer. A virtual terminal provides all of the same functionality as a physical terminal, including the ability to enter text commands and view the results of those commands on the screen.

19. What is an echo?

Echo is a command in Telnet that allows you to see what you are typing as you type it. This can be useful in troubleshooting connection issues or simply in understanding what characters are being sent over the connection.

20. What is a BBS?

A BBS is a Bulletin Board System. It is a computer system that allows users to connect to it and exchange messages and files.