Thẻ ghi nhớ: IOT102 full | Quizlet

IoT gateway is:

A. Physical device

B. Software program

C. Raspberry Pi

D. All of the above

D

(True or False)

Gateways can be configured to perform pre-processing of the collected data from thousands of sensors locally before transmitting it to the next stage.

A. True

B. False

A

IoT gateways perform several critical functions such as: (Which one is wrong).

A. Device connectivity

B. Protocol translation

C. Improving networks

D.Data filtering and processing, security

C

An IoT gateway device bridges the communication gap between: (Which one is wrong).

A. end users

B. IoT devices

C. Sensors

D. cloud

A

Before purchasing one gateway device you should consider: (Which one is wrong).

A. Network Security

B. Uptime

C. Power

D. Downtime

B

Which one isn't key core principles of security for IoT gateway.

A. Strategy

B. Confidentiality

C. integrity

D. authentication

A

Which device is often to be attacked in IoT system.

A. Sensor

B.Actuator

C. Gateway

D. Cloud Server

C

The maximum number of IPv4 address is:

A. 2^32

B. 2^64

C. 2^128

D. 2^256

A

The maximum number of IPv6 address is:

A. 2^32

B. 2^64

C. 2^128

D. 2^256

C

How many byte an IPv4 address has:

A. 32

B. 4

C. 16

D. 64

B

Which of the following IPv4 address is in correct format.

A. 172.16.400.3

B. 172.a4.400.3

C. 172.16.286.3

D. None of the above

D

The benefits of IPv6 are (which one is wrong).

A. more private address collisions

B. Auto-configuration

C. Flexible options and extensions

D. No more NAT (Network Address Translation)

A

Which of the following IP address is wrong?

A. 43.126.38.91

B. 126.133.254.1

C. 22.131.256.3

D. 222.222.222.222

C

The protocol for Internet is:

A. TCP/IP

B. ZigBee

C. Wi-Fa

D. Bluetooth

A

An automatic telephone switch has:

A. Memory

B. Service logic

C. Controller

D. All of the above

D

Are VPNs legal?

A. Yes in all countries

B. Not at all

C. Yes In some countries

D. Needs permission In the USA

C

What you should considered more when you are buying VPN:

A. Speed, privacy and security

B. Cost

C. Security

D. Free trials and money back guarantees,

A

It is safe to use public Wi-Fi hotspots if you are connected to

A. Internet server

B. ISP

C. VPN provider

D. All of the above

A

Which one is wrong for cloud and IoT cloud?

A. The cloud is just a metaphor for the Internet

B. The cloud is a Secure Internet provider

C. Cloud integrates billions of devices, sensors, gateways, protocols and data storage

D. IoT cloud is a sophisticated high performance network of servers

B

Which one is wrong for cloud and IoT cloud?

A. IoT cloud covers all things, objects, people and animals

B. Internet clouds covers all computers, mobiles, other peripherals and people

C. All countries must use one IoT Network

D. No difference between IT cloud and IoT cloud

E. Cloud computing and Internet of Things (IoT) are two very different technologies.

D

What are not the major components of Internet of Things?

A. Cloud

B. ISP

C. User Interface

D. Analytics

B

IoT Networks must be standard, because:

A. Different devices are manufactured by different companies!

B. Of security

C. All countries must use one IoT Network

D. None of the above

A

Which one is NOT an example of user interface?

A. Smartphone

B. www - web pages

C. Gateway

D. Your PC

C

For sending signals via radio stations channels, you should either:

A. Increase Power Energy of radio station or Decrease Bandwidth!

B. Increase Power Energy of radio station and

Increase Bandwidth!

C. Decrease Power Energy of radio station and Decrease Bandwidth!

D. Decrease Power Energy of radio station or Increase Bandwidth!

A

Morse communication sends characters less than:

A. 4K bit/second

B. 100 bit/second

C. 20 bit/second

D. 1K bit/second

C

Which one is wrong about Bandwidth and Range?

A. NFC has Low BW and Low Range

B. Bluetooth has Low BW and Low Range

C. Lora has Low BW and Low Range

D. Mobile 4G/LTE has Low BW and Low Range

D

The four important layers in IoT Ecosystems are:

A. sensor layer

B. network layer

C. platform layer

D. application layer

E. all of the above

E

What are the major components of the Internet of Things:

A. Things/devices

B. gateway

C. cloud

D. analytics

E. user interface

F. all of the above

F

What is the difference b/w Normal Device and IoT Devices?

A. Connected devices is about connecting and communicating b/w devices

B. However, IoT goes beyond to include people, things, and software systems

C. A and B

C

Types of networks include:

A. PAN

B. LAN

C. MAN

D. WAN

E. all of the above

E

Some examples of wireless technology are:

A. Cordless phone

B. GPS units

C. Wireless computer parts/satellite tv

D. Zigbee, cellular, wireless networking, LoRa, LiFi,Wifi, BT

E all of the above

E

NFC allows a short range of less than:

A. 20 cm

B. More than 20 cm

C. less than 20 mm

D. more than 20 mm

A

Only veryy few cell phones support NFS as it has:

A. Low transmission capacity

B. High transmission capacity

C. Medium transmission

capacity

D. Non transmission capacityy

A

The wireless communication tech not belong in the home area network is:

A. RFID

B. NFC

C. Wi-Fi

D. LoRa

D

In IoT networking, we need the WAN because:

A. We want to communicate with IoT devices everywhere.

B. We want to communicate with ppl everywhere

C. We want to communicate with high performance apps

D. we want to communicate with high security

A

Radio stations, for sending signals far from stations using:

A. High power Energy (Kilowatt)

B. High Power Energy (Megawatt)

C. High Frequency (Kilo Hertz)

D. High Frequency (Mega Hertz)

A

IoT Network's need:

A. To use low power energy

B. To use high power energy

C. to send signals not far from transmitter

D. a and b are correct

D

In IoT networks we are looking for:

A. sending signals far, using low power energy

B. sending signals near using low power energy

C. sending signals far, using high power energy

D. sending signals near, using high power energy

A

The correct definition for bandwidth is:

A. capacity of channel

B. the range of frequencies within a given band, in

particular that used for transmitting a signal

C. Rate at which electronic signals can travel thru a medium such as wire, cable, or channel.

D. all the above

D

For sending signals via radio stations channels, you should either:

A. increase power energy of radio station or decrease bandwidth

B. decrease power energy of radio station or decrease bandwidth

C. increase power energy of radio station or increase bandwidth

D. decrease power energy of radio station or increase bandwidth

A

Bandwidth may be thought of as the width of the 'pipe' through which data travels:

A. Greater the width, larger the amount of data can flow through it.

B. Smaller the width, larger the amount of data can flow through it.

C. Greater the width, smaller the amount of data can flow through it.

D. smaller the width, larger the amount of data can flow through it.

A

Morse communications sends characters less than:

A. 4k bit/second

B. 100 bit/second

C. 20 bit/second

D. 1k bit /second

C

About the bandwidth and range of NFC, which one is correct?

A. low BW and low range

B. high BW and low range

C. low BW and high range

D. high BW and high range

A

Bluetooth is used:

A. for small devices low BW and small battery

B. for small devices high BW and small battery

C. for small devices low BW and big battery

D. for large devices low BW and small battery

A

Which one is correct for LoRa technology?:

A. Low BW but long range (no limit by physics, limited by human)

B. High BW but long range (no limit by physics, limited by human)

C. Low BW but long range (no limit by physics and by human)

D. High BW but long range (no limit by physics and by human)

A

Which of the following technology is closer to the standard of mobile technology?

A. LoRa

B. NSF

C. RFID

D. Bluetooth

A

Which one related to bandwidth and range, is wrong?

A. NFC has low BW and low range

B. Bluetooth has lowBW and low range

C. LoRa has low BW and low range

D. Mobile 4G/LTE has low BW and Low Range

D

Most modern smart devices and sensors can be connected to low power wireless networks like WiFi, ZigBee, Bluetooth, Z-wave, LoRaWan and each of these wireless technologies has its own pros and cons in terms of:

A. Power

B. Data transfer rate

C. Overall efficiency

D. All of the above

D

In the area of IoT developments, researchers are looking for:

A. Low power, low cost wireless transmitting devices

B. Long battery life

C. Efficiency of battery

D. All of the above

D

In order to achieve intelligent D2D communication, devices require:

A. intelligent routing protocols

B. intelligent routing internet

C. intelligent routing gateway

D. intelligent routing routers

A

ZigBee is an IEEE 802.15.4-based spec for a squire of high level comm protocols used to create PANs w/ small, low-power digital radios, such as home automation, medical device data collection, and other low-power low-bandwidth needs, designed for small scale projects which need wireless connection

A. True

B. False

A

ZigBee is:

A. A low power

B. Low data rate

C. Close proximity

D. All of the above

D

Protocol IEEE 802.11 is:

A. a set of media access controls(MACs)

B. a set of physical layers

C. Specifications for implementing WLAN computer communication in the 900 MHz and 2.4,3.6, 5, and 60 GHz frequency bands.

D. The standard and amendments provide the basis for wireless network products using WiFi

brand

E. all of the above

E

Wi-Fa is a technology for wireless local area networking with devices based on:

A. IEEE 802.11 standards

B. Wi-Fi using radio waves

C. Wi-Fa providing wireless high speed intternet

D. Wi-Fi providing network connections

E. all of the above

E

Which one is correct in terms of Wi-Fi:

A. Wireless Fidelity

B. Wi-Fi is simple a trademarked phrase that means: IEEE 802.11x

C. Wi-Fi is wired technology

D. Wi-Fi is useful for WAN network

B

What is used to provide IoT sensors access to the network?

A microcontroller

What limits the type of different objects that can become intelligent sensors on the internet of things

Doorbells, garage doors, smartwwtvhes

What devices provides auto discovery services for smart devices that are connected to the network

The home gateway

What are two requirements to connect a smart device to a home wireless network

An IP address and an SSID

What are two things that all digital devices need in order to work?

Data & programing

What is the purpose of packet tracer?

To simulate and visualize one or more networks

What is the largest network in existence?

The internet

What type of network is the connection between a Bluetooth headset and a vehicle?

PAN

Which type of network consists of wired computers in a college classroom?

LAN

What is an open source physical computing platform that can take input from a variety of switches or sensors to control physical objects?

Arduino

Which technology is used as a visual programming tool to create a program by connecting colored blocks

Blocky

Which two skills help with IoT prototyping?

Programing, design

Which describes global variables in programming languages?

Anywhere in a program it can be used

What are two characteristics of the Python programming language?

Easy to read code & it runs without conversion to machine learning

Change will have to occur in the corporate network in order to prepare for the Internet of things. Which type of testing would a company do to demonstrate the benefits of networking a new "thing" that was not on the network before

Prototyping

What are three attributes of data that would indicate that it may be big data

Variety, volume, velocity

What are three benefits of cloud computing

It eliminates or reduces the need for onsite maintenance and management

What is the purpose of data analytics

To gain insights from data

How was data that has been collected through sources such as webpages, audio, or tweets categorized?

Unstructured

True or false? Comma-separated values (CSV), JSON and XML are all tools that can be used to manipulate structured data

True

Mined data can be visualized through the use of charts. What are the criteria that can be used to determine the best chart selection.

Number of variables shown

Items requiring comparison.

What are two features of automation?

A process that is self driven & process that might eliminate human intervention

Which technology has the intelligence that is demonstrated by machine in a way that mimics human cognitive functions?

AL

Which technology is a subset of AL that uses statistical technique to enable computers to "learn" from collected data

ML (machine learning)

What is a key feature of the assurance element of the intent-based networking model?

End to end Verification of network

Which security best practices involves defining company rules, job duties and expectations

Developing a security policy

What are two areas of physical security which

Outside perimeter security & inside perimeter security

A company requires using a secure encrypted Internet connection when connecting to the corporate network from outside the company. Which technology should be used when employees travel and use a laptop

VPN

Which character is used within a search engine to gather data efficiency by placing the character before and after the name of the particular person

Quotation marks

Which two type of institutions do malicious web pages often look like

Bank website & financial institution

What are some examples of data types that would be classified as personally identifiable information (PII)

Social security number, email address, bank account number, fingerprint

True or false? With artificial intelligence, smart devices can modify processes and settings on the fly in responses to changes on the network

True

What is the core components of intent-based networking?

Artificial intelligence

FOR

Repeat the execution of a specific block of code for a specific number of times

While

Execute A block of code while condition is true

IF THEN

Allow the code to make decisions

fog computing

An architecture that utilizes edge devices for data pre-processing and storage

Cloud services

A collection of data centers or connected servers that provide anywhere anytime access to data and applications

Distributed processing

Breaks large volumes of data into smaller pieces which are processed by computers in different locations

Hadoop

A comprehensive ecosystem of open source software for big data management

In an industrial fan maintenance system, what physical change does Ian Howard say a sensor might detect, measure and transmit data on?

A. Vibration

B. Blade speed

C. Power

D. Wind direction

A. Vibration

Which word or phrase most accurately sums up the main benefit of IoT technology?

A. Economies

B. Enhanced safety

C. Accuracy

D. Efficiencies

E. Energy use

F. Response time

D

What protocol is good for communication of IoT devices with restricted power and low data rates over a range of a few kilometres ?

Which of these media is currently NOT used in communicating data?

Wireless / electromagnetic waves

Hydrogen cables / electro ionisation

Fibre optics / pulses of light

Copper cables / electrical signals

A. Bluetooth

B. Zigbee

C. LoRaWAN

D. 4G

E. WiFi

C

Communication in a network is carried via a _________ ?

A. Sensor

B. Router

C. Medium

D. Device

E. Controller

C

How does the addition of data due to IoT create privacy issues?

A. Systems struggle to deal with the large amount of data so data gets 'stuck outside security' waiting to be dealt with

B. Multiple data sets each stripped of identification initially can be combined as a whole and reveal identity

C. More data going through security measures inevitably means more security breakdowns and data leakage

D. IoT devices generally connect wirelessly creating additional harder to secure channels for data hijack

B