COMPUTER NETWORKING

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NETWORK SECURITY

INTRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
SSH was created to be an improvement on the Telnet terminal emulation program. In which of the following ways is it an improvement?
A
SSH is faster than Telnet.
B
SSH provides graphical terminal emulation.
C
SSH encrypts passwords and data.
D
SSH is less expensive than Telnet.
Explanation: 

Detailed explanation-1: -Secure Shell (SSH) Improves on the performance of Telnet by encrypting the passwords and other data it transmits over the network.

Detailed explanation-2: -Telnet transfers the data in simple plain text. SSH uses Encrypted format to send data and also uses a secure channel. No authentication or privileges are provided for user’s authentication. SSH is more secure, so it uses public key encryption for authentication.

Detailed explanation-3: -SSH provides more security for remote connections than Telnet does by providing strong encryption when a device is authenticated. This software release supports SSH Version 2 (SSHv2).

Detailed explanation-4: -The most important is that SSH is much more secure than Telnet, which has caused it to replace Telnet almost completely in everyday use. Telnet and SSH use different default ports. While Telnet can only transfer data as plain text, SSH can encrypt traffic in both directions.

Detailed explanation-5: -The new protocol replaced several legacy tools and protocols, including telnet, ftp, FTP/S, rlogin, rsh, and rcp.

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