SOLVED

81) Which of the following network topologies is capable of covering the largest distance? A) star network B) bus network C) ring network D) mesh network E) tree network 82) Which of the following statements is true of a bus network topology? A) A bus network has the most complex wiring layout. B) Extending a bus network is more difficult to achieve than it is for other topologies. C) A bus network topology enables all network nodes to receive the same message through the network cable at the same time. D) The configuration of bus networks facilitates easy diagnosis and isolation of network faults. E) In a bus network, every computer and device is connected to every other computer and device. 83) As per the Open Systems Interconnection (OSI) model, which of the following layers defines the way data is formatted, converted, and encoded? A) application layer B) transport layer C) presentation layer D) data link layer E) session layer 84) According to the OSI model, the ________ layer defines the protocols for structuring messages. A) physical B) session C) transport D) data link E) network 85) According tot he OSI model, the physical layer defines ________. A) the protocols for data routing to ensure that data arrives at the correct destination B) the way data is formatted, converted, and encoded C) the mechanism for communicating with the transmission media and interface hardware D) the way that application programs such as electronic mail interact with the network E) the protocols for structuring messages 86) A ________ is a device that converts digital signals from a computer into analog signals so that telephone lines may be used as a transmission medium to send and receive electronic data. A) modem B) LAN card C) network adapter D) PCI connector E) USB port 87) A ________ is a PC expansion board that plugs into a computer so that it can be connected to a network. A) transceiver B) multiport repeater C) cable router D) network interface card E) modular connector 88) A(n) ________ is a piece of networking hardware that manages multiple access points and can be used to manage transmission power and channel allocation to establish desired coverage throughout a building and minimize interference between individual access points. A) router B) wireless controller C) network switch D) modem E) network interface card 89) Which of the following entities is responsible for managing global and country code top-level domains, as well as global IP number space assignments? A) American Registry for Internet Numbers (ARIN) B) World Wide Web Consortium (W3C) C) Internet Assigned Numbers Authority (IANA) D) Internet Governance Forum (IGF) E) European Organization for Nuclear Research (CERN) 90) Which of the following Internet connectivity technologies enables data to be sent over existing copper telephone lines by sending digital pulses in the high-frequency area of telephone wires? A) integrated services digital network technology B) digital subscriber line technology C) dial-up service technology D) cable modem technology E) fiber to the home technology