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WorksheetsPHẦN I. TRẮC NGHIỆM NHIỀU LỰA CHỌN - Khái niệm và Ứng dụng AI
Total questions: 71
Worksheet time: 36mins
Which statement best captures the brief definition of Artificial Intelligence (AI)?
The ability of computers to execute calculations at extremely high speed.
The ability of computers to perform tasks that exhibit human-like intelligence.
Designing smart systems that can automatically adjust behavior.
Computer systems programmed solely to simulate data and knowledge.
Which is a representative application of AI?
Wi‑Fi access point hardware.
Laptop computers.
Projector screens.
Virtual assistants such as Siri, Google Assistant, or Alexa.
Which field is identified as experiencing strong growth based on AI achievements?
Professional sports.
Healthcare and medical care.
Arts and culture.
Mining industry.
Which AI system is used as an example of knowledge representation, reasoning, and learning from new data sources?
MYCIN expert system (medical diagnosis).
Asimo robot.
Google Translate.
ChatGPT.
Which is a major caution mentioned regarding the future development of AI?
Increasing investment costs for technology infrastructure.
Job pressure due to AI potentially replacing many current tasks.
Limiting human creativity.
Slowing down the pace of scientific and technological development.
Which capability most clearly reflects the defining characteristic of AI?
Applying knowledge and logic to make decisions or conclusions similar to human reasoning.
Super‑fast arithmetic, handling thousands of operations per second.
Accurately executing simple, repetitive tasks as programmed.
Storing massive amounts of data in computer memory.
Among typical AI applications, which most directly demonstrates facial recognition capability?
MYCIN assisting diagnosis.
Google Translate converting English text into Vietnamese.
Siri setting alarms and sending messages.
A smartphone app that unlocks by scanning and verifying a user's identity.
Using AI robots on assembly lines or AI drones to monitor crops and spray pesticides represents breakthroughs in which sector?
Education.
Finance and banking.
Manufacturing and agriculture.
Healthcare and medical services.
How does ChatGPT demonstrate the ability to learn from new data?
By using logic to solve complex math problems on request.
By compiling information from many sources to write detailed essays.
By understanding questions written in natural language by people.
By incorporating new information provided by users (e.g., feedback) to improve knowledge and give more accurate answers next time.
Which warning directly relates to the lack of transparency in AI systems?
Increased unemployment as robots replace routine jobs.
Security risks when AI is used to create harmful software or deepfakes.
Privacy concerns from collecting and misusing personal data (e.g., voice cloning).
Organizations developing AI privately without disclosing how it works, raising concerns about the purposes of using personal information.
A bank deploys AI to monitor transactions in real time, detect unusual activity, and automatically flag or temporarily stop transactions without immediate human intervention. Which field and benefit does this best illustrate?
Finance and banking; supports fraud detection and prevention
Education; enhances personalization in studying
Healthcare; increases speed of surgical procedures
Manufacturing; optimizes the global supply chain
On a smart farm, drones collect data on humidity, pests, and weather. Using these data, AI directs robots to plan harvests or spray pesticides precisely. What does this show about AI’s impact in agriculture?
Fully replacing humans in every farm task
Reducing legal risks related to drone operation
Improving efficiency and resource use while supporting safe, sustainable production
Focusing mainly on solving lab research problems
Using a virtual assistant (e.g., Siri, Google Assistant) to make calls, search information, or control smart-home devices demonstrates AI in which domain and with which core abilities?
Everyday life (Assistants, IoT/AioT); natural language understanding, learning, and problem solving
Transportation; environment perception and logical reasoning
Healthcare; learning and reasoning without language understanding
Expert systems; knowledge aggregation and cognition
To wirelessly connect a PC/Laptop with a smartphone for short‑range file transfer without cables, which common, basic technology built into both devices should be enabled?
HDMI cable connection
Bluetooth
Ethernet network cable
USB Type‑C port
To connect a laptop to a TV or projector to transmit high‑quality audio and video, which common signal cable is typically used?
USB Type‑A cable
Ethernet (RJ45) cable
HDMI cable
Landline phone cable
Which smart device is small, worn on the wrist, and tracks activity, heart rate, or sleep quality?
Tablet computer
Smart TV
Smart band (fitness tracker)
Security camera
To remotely control smart home devices (e.g., smart switches, air‑conditioners, internet‑connected TVs) via a smartphone, which connection method is used?
Direct USB cable connection only
Internet connectivity with cloud status updates
Bluetooth only between phone and each device
CD/DVD connection
Which device enables users to experience virtual reality and can connect to a PC for interactive use?
Smart speaker
VR glasses/headset
Wi‑Fi router
Touch control panel
When pairing a PC with a smartphone to transfer files over Bluetooth, which crucial step establishes the link between the two devices?
Only turn on Bluetooth and start sending files
Plug in a USB cable and select file‑sharing mode
Enable Bluetooth on both, then perform pairing and confirm the passkey on both devices
Ensure both are on the same Wi‑Fi network and use "share over network"
When connecting a laptop to a Smart TV via HDMI to use the TV as an extended display, what setting should be chosen on the laptop so the TV shows content while the laptop screen remains on as well?
Duplicate/Mirror display
Second screen only
Extend display
Projector mode off
Which connection is required for a smartphone to remotely control a smart home device over the Internet?
Direct Bluetooth pairing with the phone to receive commands
Connecting via Wi‑Fi and updating device status to a Cloud service
Wired Ethernet connection from the device to a home router
Installing a control app on the phone is sufficient for immediate control
A smart band has limited onboard processing. To use advanced features and synchronize health data, it should connect to which device?
Virtual reality glasses that display information
A smart TV through an HDMI port
A smartphone or PC using a dedicated management app
A Wi‑Fi router to automatically send data to the Internet
For wireless connection (via Wi‑Fi) between a laptop and a TV so the TV becomes an extended display, which prerequisite must be satisfied?
The TV must have an HDMI port connected to an Ethernet cable
Both the laptop and TV must be directly linked by a USB cable
The laptop must support Bluetooth 5.0 or higher
Both the laptop and TV must join the same Wi‑Fi network (same LAN)
Which network device connects wired devices within the same LAN and can determine the port for the sender and receiver to improve data transfer efficiency?
Modem
Switch
Access Point (Wi‑Fi AP)
Router
Which device primarily creates a wireless (Wi‑Fi) network so mobile devices can connect without cables?
Switch
Modem
Access Point (Wi‑Fi AP)
Router
In Internet access, what is the main function of a modem (Modulator/Demodulator)?
Forward all data across different ports for sharing
Route data from a LAN to a WAN
Convert digital signals of computers to analog for transmission over cables and vice versa
Connect wireless devices to each other inside a LAN
Which option best describes a network protocol at a high level?
Software that lets users share resources on a network
Another name for devices like routers and switches
The unique address of each device joining the Internet
A set of rules defining communication formats for data exchange among network participants
On the Internet, what key role does the TCP/IP protocol suite play?
Ensuring all computers have Wi‑Fi capability
Defining domain naming conventions (e.g., .com, .vn)
Assigning addresses to devices and ensuring accurate, reliable, and efficient data transmission
Specifying which natural language is used for communication in cyberspace
Your PC connects to a Wi‑Fi router inside a digital-signal LAN, but the provider uses analog signals over coaxial/copper lines. Which device must be placed between the router and the Internet Service Provider to ensure successful data transmission?
Switch, because it links devices within the same LAN
Access Point (WAP), because it creates a wireless network
Router, because it routes data between networks
Modem, because it converts digital signals to analog and back
What core difference in packet handling distinguishes a switch from a hub in the same LAN?
A switch uses Wi‑Fi signals, while a hub uses wired signals
A switch only connects PCs, while a hub can connect a modem
A switch identifies the destination MAC address and forwards frames only to that device, reducing collisions
A switch determines IP addresses and forwards packets to the Internet
What is most likely to happen if computers try to communicate without using a Network Protocol?
Data will still transfer but at much lower speed.
Data will transfer but images and video cannot be displayed.
Devices will not understand data formats and handling rules, causing communication failure.
Data can only move within LAN and cannot reach the Internet.
Which is a core function of the Internet Protocol (IP) when data must move between different LANs?
Break data into small segments and number them for reassembly.
Ensure application-level reliable delivery for each app.
Assign IP addresses to devices and perform routing to choose optimal paths from source to destination.
Detect errors and request retransmission of corrupted or lost data.
Within the TCP/IP model, if IP delivers packets end to end, what role does TCP play?
Provide a MAC address for each packet.
Decide which router a packet uses in a WAN.
Identify which application a packet belongs to by using port numbers.
Convert digital signals into analog signals.
In a LAN, which resources are typically shareable among computers?
Only mouse and keyboard.
Only network devices like routers and switches.
Files, folders, and printers.
IP and MAC addresses.
Before sharing files and printers on Windows in a private LAN, which basic setting should be enabled so computers can see each other?
Enable "PC Screen only" mode.
Temporarily disable Bluetooth.
Set the network profile to Private and allow devices to discover each other.
Install the TCP/IP protocol suite.
Which operating system feature is often disabled in a private network and must be enabled for devices to find and share resources successfully?
Network Discovery
Firewall
File Explorer
Bluetooth
In a LAN, when a computer is physically connected to a printer and configured to allow other computers to use it, what role does that computer serve?
Network Printer
Client
Print Server
Wireless Access Point
When sharing a folder so that others can only view contents without modifying files, which permission should be applied?
Read
Read/Write
Write only
Owner
To successfully set up file and printer sharing between two PCs (A and B) on a LAN, which network settings should be enabled or configured?
Enable Bluetooth pairing between the two PCs.
Use the Private network profile and turn on Network discovery with File and printer sharing.
Completely uninstall antivirus software on both PCs.
Manually assign static IP addresses to both PCs only.
A firewall primarily blocks unauthorized access. If a user wants to access a shared folder from another PC on the LAN, what should they typically do with the firewall to allow that access?
Set the firewall to the highest Public Network security mode.
Keep the firewall On and add an exception for other computers or for file and printer sharing.
Turn the firewall Off permanently for the LAN profile.
Enable Bluetooth access through the firewall instead of network discovery.
A computer B accesses a shared folder X on computer A with permission set to Read only. What actions can B perform on files in folder X?
Copy, view, edit, and delete files
Copy, view, and edit files, but cannot delete
Copy and view data, but cannot modify, edit, or delete
Only view; cannot copy or change anything
In a LAN, what is a key benefit of sharing a printer through a host or print server instead of connecting each computer directly to the printer?
Reduces network congestion compared to direct router connections
Host PC can stay off while clients queue jobs automatically
All client PCs can send print jobs to the host without each needing a direct connection or multiple printers
Only the host PC gains control to cancel other users’ jobs
After computer A shares a folder successfully, what is the correct way for computer B to access and view that folder over the network?
Use a USB cable to connect A and B directly
Open File Explorer on B, go to Network, and double-click A’s icon
Enter A’s IP address into B’s web browser
Reinstall TCP/IP on B
You need colleagues on computer B to read, copy, and modify files inside the shared folder “Summary Report” on computer A. Which permission should you configure on A?
Read (Read) because they only need to view reports
Read/Write (Read/Write) to allow copying and editing content
Owner because they will be the main users
No special permissions since they are on the same LAN
Computer A has enabled Network discovery and shared the folder “Project X.” Which action should computer B take to successfully access the shared folder to download files?
On B, open a browser and enter A’s IP address
On B, reconnect the network cable between the two computers
On B, open File Explorer, go to Network, and double‑click A to see shared folders
On B, temporarily disable the firewall and then send an access request to A
Computer A is sharing the entire D drive on the LAN. After completing work, which action on A helps secure the system by stopping further remote access to drive D?
Unplug the network cable from A
Restart A
Open Advanced Sharing Settings for drive D and uncheck “Share this folder”
Enable the Firewall to block all remote access
In a small office, computer A is the only device physically connected to printer P via USB and is set as the print server for five colleagues. What setup step should a colleague on computer B perform to print?
Reconfigure TCP/IP
Find printer P on the LAN by Computer A’s name and add it to B’s list of printers
Connect B directly to P through the router
Download and install the newest driver for P from the Internet
On a home LAN configured as a Private Network, computer B still cannot access a folder shared from computer A due to an access‑blocked error. Which missing setup on A is the most likely cause?
B hasn’t installed a network driver
A hasn’t enabled Bluetooth
A hasn’t set the folder permission to Read (Read Only)
A hasn’t temporarily allowed access by turning off the Firewall for the Private Network profile
A mobile device (e.g., smartphone) wants to join the computer network wirelessly when hardware and software are ready. Which common wireless technology is used to access the LAN?
Bluetooth (short‑range pairing only)
Infrared
Wi‑Fi
HDMI cable
To begin connecting a mobile device to a wireless network (Wi‑Fi), which basic action should be performed on the device?
Turn off GPS service.
Enable the Wi‑Fi feature.
Reinstall the TCP/IP stack.
Restart the mobile device.
On a device’s control interface, which icon is commonly used to show the list of available Wi‑Fi networks?
Headphones icon.
Printer icon.
Wireless signal waves icon.
Ethernet cable icon.
For a mobile device to join a local wireless LAN, which network device acts as the access point?
Switch.
Modem.
Wi‑Fi Access Point (WAP).
Router.
When a Wi‑Fi network is protected (lock icon shown), which condition is mandatory for a mobile device to connect successfully?
The device must have a static IP address.
The user must enter the correct password (key).
The device must pair via Bluetooth with the router.
The device must disable its firewall temporarily.
What is the primary role of a Wi‑Fi Access Point (WAP) when a smartphone with Wi‑Fi enabled wants to join the home LAN?
Provide direct MAC addresses of PCs so the phone can talk to them.
Allow the mobile device to access the LAN, after which the router provides the IP address needed for Internet communication.
Automatically share all files from PCs on the LAN to the phone.
Convert analog signals to digital signals.
When a device attempts to join a secured Wi‑Fi, why does the system require entering a password during the connection process?
The password converts digital signals to analog for long‑distance transfer.
It acts as a secret key that encrypts data, ensuring only authorized devices can access and decode information on the LAN.
It tells the router which route is optimal for data.
It is the IP address the device must use during connection.
To successfully receive a file from a PC over Bluetooth, what must the mobile phone do at the receiving end?
Be set to Airplane mode.
Initiate pairing from scratch again.
Perform the Accept action for the incoming file request.
Connect an extra USB cable to speed up transfer.
A smartphone wants to connect to a home Wi‑Fi LAN. What is the most important condition that must be ensured on both the phone side and the Wi‑Fi equipment for a smooth connection?
The phone must have more than 4GB RAM.
Wi‑Fi on the phone must be enabled, and the Wi‑Fi network must be broadcasting within range so the phone can detect the signal.
The phone must manually install TCP/IP.
The Wi‑Fi AP must use an HDMI cable to the main router.
To control a smart light switch from a mobile phone, users must install a dedicated control app. What is the app’s main role?
Completely replace the OS TCP/IP stack.
Turn the phone into a Wi‑Fi router that broadcasts to the switch.
Provide an interface to set up the initial connection between the smart device and the local network and then send control commands via the cloud.
Only synchronize health data from the phone’s sensors.
At a cafe, you want to join the public Wi‑Fi named "CafeX_WAP" (lock icon shown). After turning on Wi‑Fi and selecting the SSID, what must you do next to complete the connection?
Temporarily disable Bluetooth and the firewall on the phone.
Enter the correct Wi‑Fi password provided by the cafe.
Turn on Mobile Hotspot so other devices can share your data.
Connect a network cable to the phone.
A laptop without a SIM needs Internet via a phone. Which action turns the phone into a wireless access point for the laptop?
Enable Bluetooth and pair with the laptop
Reconfigure the phone’s TCP/IP stack
Turn on Mobile Hotspot (Mobile tethering)
Join the nearest Wi‑Fi router
After pairing a smartphone (e.g., "GalaxyS23") with a PC, you select a file on the PC to send via Bluetooth. What must happen on the phone to complete the transfer?
Open Bluetooth Settings and tap Connect again
Nothing; pairing already completes the transfer
The phone must display and you must accept the incoming file request (Accept)
The phone must send a random PIN to the PC
You installed a smart‑home controller app and want to set up a smart light over the Internet. What is the critical next step to perform the first‑time connection (device onboarding)?
Turn on Duplicate mode on the phone
Use the app to establish a connection between the light and Wi‑Fi, then register it to the cloud
Use an HDMI cable between the phone and the light
Disable phone Wi‑Fi to switch to 4G
You connected your phone to a school Wi‑Fi LAN. After finishing work and leaving, what simple step best saves battery and switches back to mobile data?
Type the wrong Wi‑Fi password so it disconnects automatically
Open Wi‑Fi settings and choose Disconnect or Forget Network
Power off the school’s Wi‑Fi router
Enable Bluetooth and pair to another device
Which option best captures a key advantage of online communication in cyberspace?
Reduces all language‑related misunderstandings
Enables communication from anywhere, anytime with a device and Internet
Guarantees perfect protection of all personal information
Strengthens in‑person relationships automatically
Which example best illustrates a drawback of lacking nonverbal cues in online communication?
Internet maintenance is too expensive
Hard to convey tone in text; a joke may be mistaken for a serious statement
Data transfer speed always slows due to technical issues
Messages cannot be sent without emojis
When sharing a phone’s Internet with a laptop, which security step is implied by best practice for a Mobile Hotspot configuration?
Leave the hotspot open for easier access
Set a correct network password when prompted
Disable encryption to improve speed
Use the café’s private IP address on the phone
During Bluetooth file transfer from PC to phone, which of the following is NOT required after successful pairing?
Accept the incoming file on the phone
Re‑enter a random passcode into the PC for every file
Keep Bluetooth enabled on both devices
Initiate the send action from the PC
For first‑time setup of a smart IoT device through a phone app, which sequence is most appropriate?
Plug phone into device via HDMI, then duplicate the screen
Connect the device to Wi‑Fi using the app, then register it to a cloud account
Turn off Wi‑Fi to ensure the device uses 4G
Pair via Bluetooth only and skip any cloud account
To intentionally stop your phone from auto‑rejoining a finished Wi‑Fi network later, which action is most effective?
Forget the network in Wi‑Fi settings
Turn off the building’s router
Toggle Bluetooth off and on
Enter an incorrect static IP
Which statement about advantages of online communication is most accurate?
It guarantees zero misunderstandings without nonverbal cues
It offers convenience by connecting people across distance and time via the Internet
It ensures total privacy regardless of user behavior
It replaces the need for any in‑person interactions
Which practice reflects humane behavior in cyberspace given the limits of text‑only messages?
Assume sarcasm will always be understood
Use clear wording and confirm intent to reduce misinterpretation
Share private data to prove trust
Ignore consent when adding someone to group chats
