Which term operates as the Session layer for applications on different devices to communicate over a LAN?

• A. NetBIOS
• B. Network Monitor
• C. Network Cards
• D. Network Topology

Answer: (A)

NetBIOS provides a session-layer style service that lets applications on different devices establish, manage, and terminate a connection over a LAN. It creates a name-based addressing scheme and offers the session services needed for two programs on separate machines to open a reliable conversation, exchange data, and close the session when finished. In LANs, NetBIOS can run over TCP/IP, using the session service to enable this direct, connection-oriented communication between applications.

The other terms don’t fulfill this role: a network monitor is a tool for observing traffic, network cards are hardware, and network topology describes how devices are arranged rather than how applications establish sessions.