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Which of the following is a network interconnectivity device that translates different communication protocols and is used to connect dissimilar network technologies?

A.
Gateway
Answers
A.
Gateway
B.
Router
Answers
B.
Router
C.
Bridge
Answers
C.
Bridge
D.
Switch
Answers
D.
Switch
Suggested answer: A

Explanation:

A gateway is a network interconnectivity device that translates different communication protocols and is used to connect dissimilar network technologies. It provides greater functionality than a router or bridge because a gateway functions both as a translator and a router. Gateways are slower than bridges and routers. A gateway is an application layer device.

Answer option B is incorrect. A router is an electronic device that interconnects two or more computer networks. It selectively interchanges packets of data between them. It is a networking device whose software and hardware are customized to the tasks of routing and forwarding information. It helps in forwarding data packets between networks.

Answer option C is incorrect. A bridge is an interconnectivity device that connects two local area networks (LANs) or two segments of the same LAN using the same communication protocols, and provides address filtering between them.

Users can use this device to divide busy networks into segments and reduce network traffic. A bridge broadcasts data packets to all the possible destinations within a specific segment. Bridges operate at the data-link layer of the OSI model. Answer option D is incorrect. A switch is a network device that selects a path or circuit for sending a data unit to its next destination. It is not required in smaller networks, but is required in large inter-networks, where there can be many possible ways of transmitting a message from a sender to destination. The function of switch is to select the best possible path.

On an Ethernet local area network (LAN), a switch determines from the physical device (Media Access Control or MAC) address in each incoming message frame which output port to forward it to and out of. In a wide area packet-switched network, such as the Internet, a switch determines from the IP address in each packet which output port to use for the next part of its trip to the intended destination.

asked 18/09/2024
MICHELE CRISTINA DOS FELIX
38 questions
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