Test: Computer Networks - 1 - CUET Humanities MCQ

A switch, in the context of networking is a high-speed device that receives incoming data packets and redirects them to their destination on a local area network (LAN). A LAN switch operates at the data link layer (Layer 2) or the network layer of the OSI Model and, as such it can support all types of packet protocols. Hence, option (2) is correct as switches operate at data link layer.

Direct Memory Access (DMA) is a capability provided by some computer bus architectures that allows data to be sent directly from an attached device (such as a disk drive) to the memory on the computer's motherboard. The microprocessor is freed from involvement with the data transfer, thus speeding up overall computer operation. This statement is false as DMA is independent of CPU. So. this is the correct answer.

This is the correct option as SMTP works on application layer.

Topology defines the structure consisting of paths and switches that provide reliable and transparent transfer of data between end points.

PAN is used for communication between a computer and different information technological devices nearby.

A gateway is a node (router) in a computer network, a key stopping point for data on its way to or from other networks. For basic internet connections at home, gateway is the Internet Service Provider that gives you access to the entire internet.

Mesh supports bidirectional links between each possible node.

A modem translates digital signals from a computer into analog signals that can travel along conventional telephone lines.

A network bridge is a computer networking device that creates a single aggregate network from multiple communication networks or network segments. This function is called network bridging. It is used to connect two separate Ethernet networks into one extended Ethernet.

Network hub is a common connection point for devices in a network.