Computer Architecture and Organization MCQs | Page - 27

Explanation: a computer network, or data network, is a digital telecommunications network which allows nodes to share resources. in computer networks, computing devices exchange data with each other using connections between nodes. the nodes have certain processes which enable them to share a specific type of data using a distinct protocol.

Explanation: in a broadcast network, information is sent to all stations in a network whereas in a multicast network the data or information is sent to a group of stations in the network. in unicast network, information is sent to only one specific station. the broadcast address of the network is the last assigned address of the network.

Explanation: bluetooth is a wireless technology used to create a wireless personal area network for data transfer up to a distance of 10 meters. it operates on 2.45 ghz frequency band for transmission.

Explanation: a protocol stack refers to a group of protocols that are running concurrently that are employed for the implementation of network protocol suite. each layer in the network model has to use one specific protocol from the protocol stack.

Explanation: topology in networks is the structure or pattern in which each and every node in the network is connected. there are many topologies in networking like bus, tree, ring, star, mesh, and hybrid topology. there is no particular best topology and a suitable topology can be chosen based on the kind of application of the network .

Explanation: wan is the abbreviation for wide area network. this network extends over a large geographical area. wans are used to connect cities, states or even countries. a wireless connection is required to build a wan. the best example of wan is the internet.

Explanation: lan is an abbreviation for local area network. this network interconnects computers in a small area such as schools, offices, residence etc. it is the most versatile kind of data communication system where most of the computer network concepts can be visibly used.

Explanation: the isps (internet service providers) are the main agents through which every computer is connected to the internet. they are licensed to allot public ip addresses to its customers in order to connect them to the internet.

Explanation: dsl (digital subscriber line) is the technology designed to use the existing telephone lines to transport high-bandwidth data to service subscribers. dsl was used to allow the early users access to the internet and it provides dedicated, point-to-point, public network access.

Explanation: packet switching is the method based on which the internet works. packet switching features delivery of packets of data between devices over a shared network.