Computer Networks

A remote concentrator collects data from multiple slow-speed peripheral devices and transmits it to central locations or different sites. This aggregates low-speed data streams for efficient transmission over communication channels.

Automatic dial-up allows modems to connect automatically when needed. Attenuation and amplification manage signal strength during transmission. Dynamic equalization adjusts for varying line conditions. All three are desirable features for effective modem operation.

All the components are included in vSphere data centre topology.

Multiuser systems are designed to support multiple users simultaneously, often through terminals or network connections. Single user systems serve only one user at a time.

A pipe is a Unix/Linux inter-process communication mechanism that allows the output of one program to become the input to another. Channels and tapes are storage or transmission media, not IPC facilities.

A teleconference is a telephone meeting among two or more participants involving technology more sophisticated than a simple two-way phone connection.

One way communication model:

Sender—— Message —— Receiver

This is the correct option. T-switch allows devices on one network to communicate with devices on another network. T-switch rearranges the connections between computing equipment.

This is the correct option. This is the network access standard which is used for connecting stations to a circuit-switched network.

The full form of LAN is local area network. It is the network which interconnects the computer within a limited area.

Modems perform several key functions: converting digital signals to analog for transmission (modulation), converting analog signals back to digital (demodulation), controlling transmission speed, detecting and correcting errors, and compressing data. However, 'data accuracy' is not a direct function of modems - accuracy depends on the error detection and correction mechanisms, not the modem itself as a primary function.

An intranet is most effective in a centralized organization where there's consistent control over information flow, standardized processes, and uniform technology adoption. Centralized organizations can implement intranet systems more uniformly across departments, ensuring better compliance and information sharing. Distributed or decentralized environments often face challenges with standardization and may have fragmented information systems that reduce intranet effectiveness.

Since the question asks what is NOT a feature, choosing 'All are features' indicates none qualify as exceptions. Networking provides reliability and connectivity between devices, while primarily offering access to shared storage rather than directly increasing local capacity. The logic follows that if all options represent valid networking features, then no single feature stands as the exception.

Half-duplex communication permits bidirectional data transfer, but not concurrently: devices take turns transmitting and receiving. This contrasts with simplex (unidirectional only) and full-duplex (simultaneous two-way). Walkie-talkies exemplify half-duplex behavior.

Modems perform modulation (converting digital signals to analog for transmission), demodulation (converting received analog signals back to digital), and often include data compression to improve throughput efficiency. All three functions are core modem operations, making 'all of these' the comprehensive answer.