- 1. Smartphones connect to Wi-Fi through a process that involves several steps and components working together to establish a seamless connection to the internet. Initially, when a user attempts to connect their smartphone to a Wi-Fi network, the device scans the surrounding environment for available Wi-Fi networks by detecting radio frequency signals emitted by wireless routers or access points. Once the scan is complete, the smartphone presents the user with a list of detected networks, which may be secured or open. If the network is secured, the user must enter a password or passphrase to authenticate the connection. After the user provides the necessary credentials, the smartphone uses the Wi-Fi Protected Access (WPA) or WPA2 protocols to encrypt the data being transmitted over the network, ensuring a secure connection. The smartphone then sends a connection request to the Wi-Fi router, which authenticates the device and assigns it an Internet Protocol (IP) address through a process called Dynamic Host Configuration Protocol (DHCP). This unique IP address allows the smartphone to communicate with other devices on the network and access the internet. Once connected, the smartphone can send and receive data packets via the Wi-Fi network, enabling activities such as browsing the web, streaming video, and downloading apps, all with the convenience of wireless connectivity. The smartphone continues to monitor the connection quality and may automatically switch to a more favorable network if available, ensuring a robust and reliable internet experience.
What is the protocol used by most Wi-Fi networks?
A) 802.15
B) 802.11
C) 802.3
D) 802.16
- 2. Which frequency band is commonly used by Wi-Fi?
A) 1.2 GHz
B) 600 MHz
C) 2.4 GHz
D) 5.0 GHz
- 3. What does SSID stand for?
A) Service Set Identifier
B) Standard Service Identification
C) Secure Service Identifier
D) Single Service Identifier
- 4. Which Wi-Fi authentication method uses a pre-shared key?
A) WPA2-Personal
B) WEP
C) Open Authentication
D) WPA2-Enterprise
- 5. Which band offers higher speeds but shorter range?
A) 5 GHz
B) 900 MHz
C) 2.4 GHz
D) 800 MHz
- 6. What does WPA stand for?
A) Wireless Public Access
B) Wireless Protected Access
C) Wi-Fi Private Access
D) Wi-Fi Protected Access
- 7. Which technology helps to extend Wi-Fi coverage?
A) Wi-Fi collectors
B) Wi-Fi mixers
C) Wi-Fi repeaters
D) Wi-Fi switches
- 8. What is the main limit of WEP encryption?
A) High latency
B) Limited range
C) Weak security
D) Complex setup
- 9. What does a Wi-Fi mesh system do?
A) Secures data intercepts
B) Provides wired connections
C) Boosts internet speed directly
D) Expands coverage with multiple nodes
- 10. What is a common Wi-Fi security setting?
A) WEP2
B) WPA5
C) WPA1
D) WPA3
- 11. What does the '5G' in 5GHz refer to?
A) 5 miles range
B) 5 Gbps speed
C) 5 devices supported
D) Frequency band in GHz
- 12. What is the main use of a Wi-Fi analyzer?
A) To assess network performance
B) To manage storage
C) To improve video quality
D) To increase battery life
- 13. What do you need to connect to a secured Wi-Fi network?
A) MAC address
B) Password
C) Username
D) IP address
- 14. Which device translates the internet signal to Wi-Fi?
A) Switch
B) Access point
C) Repeater
D) Router
- 15. Which of the following can limit Wi-Fi speed?
A) Device brand
B) Router color
C) Signal encryption
D) Network congestion
- 16. Which element is crucial for maintaining a stable Wi-Fi connection?
A) Screen resolution
B) Signal strength
C) Battery level
D) Storage space
- 17. What technology allows smartphones to connect to Wi-Fi?
A) Radio waves
B) Fiber optics
C) Infrared signals
D) Sound waves
- 18. What can weaken a Wi-Fi signal?
A) Walls and other obstacles
B) Bright sunlight
C) Using an Ethernet cable
D) Having a high battery level
- 19. What is an advantage of using 5 GHz Wi-Fi?
A) Better battery life on devices
B) More compatible with older devices
C) Higher data transfer speeds
D) Longer range
- 20. How do smartphones typically maintain a Wi-Fi connection?
A) By resetting the connection each minute
B) By turning Bluetooth on
C) By changing the IP address frequently
D) By periodically sending keep-alive packets
- 21. What type of firewall is commonly used to protect Wi-Fi networks?
A) Network firewall
B) Local firewall
C) Application firewall
D) Operating system firewall
- 22. What does DHCP stand for?
A) Dynamic Host Configuration Protocol
B) Distributed Host Communication Protocol
C) Direct Host Connection Protocol
D) Dynamic Hyperlink Configuration Protocol
- 23. What is a captive portal?
A) A security protocol
B) A web page for user authentication
C) A device to boost Wi-Fi
D) A type of router
- 24. What does Wi-Fi stand for?
A) Wired Fidelity
B) Wireless Fire
C) Wireless Fidelity
D) Wide Field Integration
- 25. Which technology can improve the reliability of Wi-Fi?
A) Beamforming
B) Two-factor authentication
C) VPN
D) Bandwidth throttling
- 26. What is the maximum theoretical speed of 802.11n Wi-Fi?
A) 300 Mbps
B) 1 Gbps
C) 150 Mbps
D) 600 Mbps
- 27. What is meant by 'bandwidth' in a Wi-Fi context?
A) The storage capacity of a router
B) The number of devices connected
C) The physical distance a signal can travel
D) The maximum rate of data transfer
- 28. What can smartphones do when connected to Wi-Fi?
A) Play offline games
B) Access the internet
C) Only send texts
D) Make phone calls only
|