1.All of the following are examples of database software except
Microsoft Access
MySQL
Oracle
Microsoft Excel
2.Which of the following can be considered a secure protocol? a. Telnet b. HTTPS c. TFPT d. BIOS e. WPA2 f. CHAP g. SSH
The Correct Answer and Explanation is :
Answers
- Microsoft Excel
- Microsoft Access, MySQL, and Oracle are examples of database management systems (DBMS) used for creating, managing, and interacting with structured databases. Microsoft Excel, on the other hand, is primarily a spreadsheet application, not a database software, though it can perform basic data storage and manipulation tasks.
- Secure Protocols:
- Correct answers: b. HTTPS, e. WPA2, f. CHAP, g. SSH
Explanation (300 Words)
A secure protocol ensures data is transmitted over a network with confidentiality, integrity, and authenticity, often using encryption and authentication mechanisms. Let’s evaluate the options:
- Telnet (a): This protocol is not secure as it transmits data, including login credentials, in plain text. It’s largely replaced by SSH.
- HTTPS (b): HTTPS (HyperText Transfer Protocol Secure) encrypts communication between the web browser and server using SSL/TLS. It prevents interception and ensures data integrity, making it a secure protocol.
- TFPT (c): Trivial File Transfer Protocol is insecure because it lacks encryption and authentication, allowing potential interception or tampering with data.
- BIOS (d): BIOS (Basic Input/Output System) is firmware used during computer startup, not a network protocol, and does not directly handle secure communication.
- WPA2 (e): Wi-Fi Protected Access 2 is a secure protocol for wireless networks, using advanced encryption like AES to protect data over Wi-Fi connections.
- CHAP (f): Challenge-Handshake Authentication Protocol is used for verifying a user’s identity over a network connection securely by using hashed credentials, providing protection against replay attacks.
- SSH (g): Secure Shell is a cryptographic protocol providing secure remote access and command execution by encrypting all transmitted data, making it a highly secure alternative to Telnet.
In summary, HTTPS, WPA2, CHAP, and SSH are secure protocols as they employ encryption, authentication, and integrity checks to protect data during transmission. Conversely, Telnet, TFPT, and BIOS do not meet modern security standards.