TCP/IP & OSI Model Online Quiz

A MAC address consists of 6 pairs of hexadecimal digits (0-9, A-F). Option B is the only one that uses valid hexadecimal characters throughout.

TCP is a connection-oriented protocol, meaning it establishes a formal connection (the three-way handshake) before data transfer begins to ensure reliability.

The Application Layer is the highest layer in the OSI model, making it the one that interacts directly with software applications used by the user.

At the Data Link Layer, data is encapsulated into frames. Packets are associated with the Network Layer, and bits are associated with the Physical Layer.

The Data Link Layer is divided into the Media Access Control (MAC) sublayer and the Logical Link Control (LLC) sublayer.

SSH (Secure Shell) is the standard protocol used for secure, encrypted remote command-line access to devices. Telnet is unencrypted, and TFTP is for simple file transfers.

The Presentation Layer (Layer 6) is responsible for data translation, compression, and encryption/decryption to ensure the Application Layer can read the data.

The Host-to-Host layer of the TCP/IP model corresponds to the Transport Layer of the OSI model, as both are responsible for end-to-end communication.

Telnet is a legacy protocol that uses TCP port 23 for remote terminal access.

Switching, specifically Layer 2 switching based on MAC addresses, occurs at the Data Link Layer of the OSI model.