Quiz 6Version en ligne Chapter 1: Things and Connections par Robertha Miranda 1 What are two advantages of using fiber optic cables compared with copper cables? (Choose two.) Choose one or more answers a They are less expensive. b They support higher bandwidth. c They provide connections over longer distances. d They use electromagnetic signals to transmit data. e They provide shared media access for a single link. 2 Choose the correct function for the controller. a monitors physical properties of the environment b performs an action c adds intelligence to things d improves IoT network performance 3 Choose the correct function for the actuator. a monitors physical properties of the environment b performs an action c adds intelligence to things d improves IoT network performance 4 Choose the correct function for the sensor. a monitors physical properties of the environment b performs an action c adds intelligence to things d improves IoT network performance 5 What are two benefits of using a layered model for network protocol development? (Choose two.) Choose one or more answers a promoting acquisition of networking products b reducing competition among different manufacturers c enhancing capabilities of networking products and services d providing a common language to describe networking functions e preventing technology changes in one layer from affecting other layers 6 What is an example of a closed-loop control system? a a manual garage door opener b a clock c a traditional dishwasher d a thermostat 7 Which type of media would use electromagnetic signals to communicate between IoT devices? a wireless b single-mode fiber c copper d multimode fiber 8 What are three components of a control system? (Choose three.) Choose one or more answers a sensor b plant c thermostat d wearable device e controller 9 What are three machine-intelligible message structures that group strings of bits for network transmission? Choose one or more answers a ASCII codes b frames c pixels d packets e segments f waveforms 10 Which level of the Internet of Things reference model describes data storage? a data abstraction b edge computing c data accumulation d physical devices and controllers 11 What is embedded within a digital object, such as a photograph or email? a sensor b microcontroller c feedback d metadata 12 Which type of IoT device operates in the device-to-network-to-cloud communication model? a Bluetooth heart-rate sensor b IP camera c smart watch d Zigbee gas sensor 13 What are two factors that impact network security in the IoT? (Choose two.) Choose one or more answers a the number of devices b the number of bits used for encryption c the nontraditional location of devices d the lack of Internet standards e the amount of space between sensors 14 What are three alternative methods of powering IoT systems deployed in remote locations? (Choose three.) Choose one or more answers a solar b PoE c vibration d temperature differences e AC line power 15 Match the layers of the TCP/IP model to their function : Internet a determines the best path through the networks to send data b manages virtual server environment c Represents data to the used and provides encoding and dialog control d Controls hardware devices and media that make up the network e Supports communication between various devices across diverse networks 16 Match the layers of the TCP/IP model to their function : Network Access a determines the best path through the networks to send data b manages virtual server environment c Represents data to the used and provides encoding and dialog control d Controls hardware devices and media that make up the network e Supports communication between various devices across diverse networks 17 Which action is the result of negative feedback? a A flashlight is used at night by a camper. b A strong feedback noise is heard in an auditorium during a rehearsal. c An unexpected chemical reaction in a chemical plant causes an explosion. d A thermostat shuts down an air conditioning unit when the temperature reaches the set temperature. 18 What type of IoT device is the Raspberry Pi? a router b sensor c actuator d controller 19 What are three types of connections in an IoT system? (Choose three.) Choose one or more answers a connection to power sources b application protocols designed for IoT c exclusive networking for IoT systems d interconnection among cloud computing systems e wires and circuitry associated with linking IoT components f OSI Layer 2 and Layer 3 networking connections 20 What is the term for the extension of the existing Internet structure to billions of connected devices? a SCADA b digitization c IoT d M2M
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