Answer: a [Reason:] Java IDE to run the example in any computer or build .jar file with all the dependencies included and launch it any computer or devices that you want to use as the MQTT client with a command similar to the following line.

Answer: c [Reason:] In case you don’t run the example in the same computer in which you are running the MQTT server, remember to change the value for the mqttServerHost string in the main method of the Main class.

Answer: c [Reason:] The public command message is sent from a publisher to a broker or from a broker to a subscriber, to publish information on a specified topic or topics.

Answer: d [Reason:] Message is sent to the input queue of a message flow that contains a publishing node. Authority to put a message into the queue and to publish on the specified topic.

Answer: b [Reason:] If the user has no authority on topic a warning response will come which indicates which are not published, if not those topics are published.

Answer: a [Reason:] ROSTOPIC uses YAML_syntax at the command line for representing the content of the message. For information on how to use this YAML syntax for commands like rostopic pub.

Answer: d [Reason:] Rostopic bw displays the bandwidth. The bandwidth reported is the received bandwidth. If there are network connectivity issues or rostopic cannot keep up with the publisher.

Answer: a [Reason:] Rostopic delay display the delay for topic which has header. Rostopic is implemented in python.

Answer: c [Reason:] Rostopic echo displays messages published to a topic. Rostopic is implemented in python.

Answer: d [Reason:] Rostopic find, finds topics by type. Rostopic is implemented in python. ROSTOPIC uses YAML_syntax at the command line

Answer: a [Reason:] The image that we have been using to boot Intel Galileo Gen 2 board includes a local agent for Intel IoT Analytics preinstalled.

Answer: c [Reason:] Unless we have made specific changes to the Yocto Linux meta distribution to disable specific component, we will have the agent running as a daemon on the device.

Answer: a [Reason:] The agent includes the iotkit-admin command line utility allows us to perform specific interactions with Intel IoT Analytics.

Answer: d [Reason:] The agent includes the iotkit-admin command line utility allows us to perform specific interactions with Intel IoT Analytics. We will use command line utility to perform the following tasks:
–> Test the proper communication with Intel IoT Analytics
–> Obtain the device Id
–> Activate a device
–> Register three time series components for the device
–> Send test observations.

Answer: a [Reason:] First, we will check whether the iotkit-admin command line utility can establish proper communication with Intel IoT Analytics. We just need to run the following command in the SSH terminal:
Iotkit-admin test.

Answer: d [Reason:] If the connection is successful, we will see lines similar to the following ones. The last line provides the information about the version.

Answer: a [Reason:] The following command in the SSH terminal to obtain the device ID, also known as deviceId:
Iotkit-admin device-id.

Answer: b [Reason:] The Iotkit-admin device-id command line will generate an output line such as the following one with the device ID. By default, the device ID is equal to the MAC address of the network interface card
2016-04.05T02:23:170Z – info: Device ID: 98-4F-EE-01-75-72.

Answer: d [Reason:] The following command to change the device ID to a different one:iotkit-admin set-device-id new-device-id. We just need to replace new-device-id with new device id you want to set up for your devices. However, bear in mind the new device ID must be a globally unique identifier.

Answer: b [Reason:] The following command to change the device ID to a different one:iotkit-admin set-device-id new-device-id. We just need to replace new-device-id with new device id you want to set up for your devices. However, bear in mind the new device ID must be a globally unique identifier.

Answer: b [Reason:] The RPi can be used without additional hardware (except perhaps a power supply of some kind), it won’t be much use as a general computer. As with any normal PC, it is likely you need some additional hardware.

Answer: a [Reason:] The RPi has no internal storage or built-in operating system it requires an SD-card that is set up to boot the RPi.

Answer: c [Reason:] HD TV’s and most LCD Monitors can be connected using a full-size ‘male HDMI cable,and with an inexpensive adapter if DVI is used. HDMI version 1.4 cable is recommended.

Answer: a [Reason:] The unit uses a Micro USB connection to power itself ( only the power pins are connected so it will not transfer data over the connection). A standard modern phone charger with a micro USB connector will do, but needs at least 700 mA at 5 volts.

Answer: d [Reason:] We can use a Ethernet cable or a USB Wifi adapter. The RPi ethernet port is auto-sensing which means that it may be connected to a router or directly to another computer (without the need for a crossover cable).

Answer: b [Reason:] Port_Name : Linux automatically assigns different names for different types of serial connectors. For Standard Serial Port: ttyS0 … ttySn
USB Serial Port Adapter: ttyUSB0 … ttyUSBn
Speed: 115200.

Answer: b [Reason:] This command is used to open and write or modify data on GNU screen and we should write in the terminal window.

Answer: d [Reason:] ARM assembler is used in Raspberry Pi. Machine language is built up from discrete statements or instructions implemented by a particular processor.

Answer: c [Reason:] Linux users. User management in Raspberry is done on the command line. The default user is Pi, and the password is raspberry. You can add users and change each user’s password.

Answer: d [Reason:] These all are the distributors that have Linux operating system which has default GUI for Fedora as Xfce, Mate, None-depends on spin.

Answer: a [Reason:] The first is a next generation Quad Core Broadcom BCM2837 64-bit ARMv8 processor, making the processor speed increase from 900MHz on the Pi 2 to up to 1.2GHz on the Pi 3.

Answer: b [Reason:] The first is a next generation Quad Core Broadcom BCM2837 64-bit ARMv8 processor, making the processor speed increase from 900MHz on the Pi 2 to up to 1.2GHz on the Pi 3.

Answer: d [Reason:] All the 3 has an inbuilt Wifi in which all of them works on 802.11 n. For Raspberry Pi Zero an external ESP2866 should be connected.

Answer: a [Reason:] All the products has a in built memory as well as a extended memory.

Answer: c [Reason:] In Raspberry Pi3 there is an upgraded switched power source that goes up to 2.5 Amps instead of just 2 Amps, allowing pi to power even more powerful devices over USB ports.

Answer: d [Reason:] Clustering is a popular method of organising wireless network topologies, in which a few nodes, the cluster heads are elected as representing to route the traffic originated in the entire network.

Answer: a [Reason:] IoT enables the humans to access, control and manage the operations and data of the objects working under different information systems of their surroundings.

Answer: d [Reason:] In information system the embedded devices and objects working under IoT implementation are resource constrained.

Answer: a [Reason:] Due to the huge number of heterogeneous network elements interacting and working under IoT based information systems, there is an enormous need of resource management for the smooth running of IoT operations.

Answer: d [Reason:] Managing of resources by implementing protocols, algorithms or techniques is required to enhance the scalability, reliability and stability in the operations of IoT across different domains of technology.

Answer: b [Reason:] The motivation of this section is to solicit the efforts and ongoing research work in the domain of resource management in IoT.

Answer: c [Reason:] Resource management will elaborate the key aspects of energy management, communication protocols and future applications of IoT for information systems.

Answer: b [Reason:] Resource management includes IoT Cloud, IoT based industrial and home environment and integration of IoT concept in upcoming technologies of Cyber Physical System, Ambient living and Fog Computing.

Answer: c [Reason:] Role of communication protocol in IoT :
–> Multimedia communication
–> QoS in communication protocol
–> Mac layer issues
–> Secure communication in D2D.

Answer: a [Reason:] Future applications of IoT:
–> IoT based information system for Ambient living
–> Cyber Physical System in IoT
–> Role of Green IoT system
–> Fog computing.

Answer: c [Reason:] The objects of the Internet of Things will be empowered by embedded devices whose constrained resources will need to be managed efficiently.

Answer: d [Reason:] It is envisioned that these devices will be able to form ad-hoc network,
and that the connection from these networks to the Internet of Things infrastructure will not always be possible.

Answer: d [Reason:] The use of Cluster, Software agent, and Synchronization techniques in order to overcome the challenges of managing the resources of the Internet of Things objects.

Answer: a [Reason:] Clustering will be beneficial to reduce the energy expenditure and improve the scalability and robustness of the object networks.

Answer: b [Reason:] Synchronization techniques will be necessary to address the various challenges of harmonising plenty of copies of object data with potentially partially disconnected Internet of Things architecture components.

Answer: a [Reason:] Complexity arises when service providers change their operating system and communication protocols, which results in inoperability. Service providers use standard protocols and conventional interfaces to facilitate information among diverse services.

Answer: c [Reason:] Services are termed as business services. They are self-contained and logical.

Answer: a [Reason:] They are loosely coupled. That means every service is self-contained and exists alone logically.

Answer: b [Reason:] The first which has direct relevance to the business as it carries out business functions. The second layer is the technical layer which talks about managing computer resources like database, web server etc.

Answer: a [Reason:] ESB is a group of components/ software which helps us to send and receive messages between the disparate applications. It is usually shown as a huge plump pipe in the architecture.

Answer: c [Reason:] SOA registry is like reference database of services. It describes what each service does, where they are located, and how they can communicate.

Answer: b [Reason:] Service broker reads the work flow and takes services from the SOA registry and ties them together. Service brokers are normally middleware like EAI(Enterprise Application Integration) products.

Answer: d [Reason:] SOA supervisor is a traffic cop ensuring do not having issues. It deals with performance issues of the system so that appropriate service levels are met. If any of the services have performance problems it sends messages to the proper infrastructure to fix the issue.

Answer: a [Reason:] Contract-It describes parameters and return values for a method.
Address-It is a URL which points to the location of the service.
Building-It determines how the communication is done.

Answer: d [Reason:] In SOA we need services to be loosely coupled. A web service communicates using the SOAP protocol which is XML based, Which is very loosely coupled.

Answer: c [Reason:] Service Oriented Architecture (SOA) approach traditionally used to couple functionality of heavyweight corporate IT systems, are becoming application to embedded real world devices.

Answer: c [Reason:] Web 2.0 to describe a perceived, quickly growing set of web based applications. A topic that has experienced extensive coverage involves the relationship between Web 2.0 and service oriented architectures.

Answer: b [Reason:] SOA is the philosophy of encapsulating application logic in services with a uniformly defined interface and making these publicly available via discovery mechanisms.

Answer: c [Reason:] Microservices are a modern interpretation of service oriented architectures used to build distributed software systems. Services in the microservice architecture are processes.

Answer: d [Reason:] Services in the microservice architecture are processes that communicate with each other over the network in order to fulfill a goal. These services use technology agnostic protocols.