Secure Shell (SSH)
Secure Shell (SSH) is a cryptographic network protocol designed for secure data communication, remote command-line control, and secure file transfers between two networked devices. It is widely used for remote system administration, replacing insecure legacy protocols like Telnet by ensuring necessary confidentiality and integrity for network communications. SSH authenticates the client by exchanging public keys and encrypting data communications between the connected devices. SSH ensures end-to-end encryption and avoids eavesdropping and man-in-the-middle (MITM) attacks, providing a secure channel for network administrators to manage systems and software remotely.
Guide: Understanding and Answering Questions on Secure Shell (SSH)
What is Secure Shell (SSH)?
SSH, also known as Secure Shell, is a network protocol that provides a secure way to access a computer over an unsecured network. It creates a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server.
Why is it important?
Secure Shell is vital in network security. It provides strong password authentication and public key authentication, as well as encrypted data communications between two computers connected over the internet. This prevents sensitive data from being intercepted and read by unauthorized parties.
How does it work?
Secure Shell works by authenticating the client and the server. After successful login, it initiates a shell session, hence the name 'Secure SHell'. During this session, any data transfer is encrypted to ensure that it cannot be read or modified on the journey between client and server. This maintains the integrity and confidentiality of the data.
How to answer questions on Secure Shell (SSH) in an exam?
When answering questions about SSH, ensure you understand key concepts, such as its use of encryption for data integrity and confidentiality, its authentication measures, and its function as a secure communication protocol between two systems.
Exam Tips: Answering Questions on Secure Shell (SSH)
Always read questions carefully. Pay attention to the parts asking about the function, benefits, and working principle of SSH. In most cases, questions about SSH are looking for your understanding of how it provides secure remote access over insecure networks. Also, remember that SSH uses encryption for data security, and it's commonly used for secure file transfers and remote command execution.
Go Premium
CompTIA A+ Preparation Package (2024)
- 3756 Superior-grade CompTIA A+ practice questions.
- Accelerated Mastery: Deep dive into critical topics to fast-track your mastery.
- Unlock Effortless CompTIA A+ preparation: 5 full exams.
- 100% Satisfaction Guaranteed: Full refund with no questions if unsatisfied.
- Bonus: If you upgrade now you get upgraded access to all courses
- Risk-Free Decision: Start with a 7-day free trial - get premium features at no cost!