Wireless Communication Fundamentals

1. What is the primary purpose of modulation in wireless communication? a) To increase signal strength b) To reduce interference c) To encode data onto a carrier signal d) To convert digital data into analog signals

• g) To separate different channels of communication

• c) To encode data onto a carrier signal

• e) To amplify the frequency

• f) To transmit data over longer distances

2. Which of the following is NOT a type of wireless communication technology? a) Wi-Fi b) Bluetooth c) Fiber Optic d) Zigbee

• c) Fiber Optic

• Ethernet

• Satellite

• NFC

3. What frequency band is primarily used for Wi-Fi communication in the 802.11 standards? a) 2.4 GHz b) 1 GHz c) 900 MHz d) 5 GHz

• a) 2.4 GHz

• 2.1 GHz

• 3.6 GHz

• 4.9 GHz

4. What does the term "handover" mean in the context of cellular networks? a) The process of encrypting wireless data b) The process of switching between different frequencies c) The process of transferring an ongoing call from one cell tower to another d) The process of connecting a device to a Wi-Fi network

• The process of initiating a new call

• The process of measuring signal strength

• c) The process of transferring an ongoing call from one cell tower to another

• The process of updating network software

5. In wireless communication, what does the acronym "LOS" stand for? a) Line of Sight b) Loss of Signal c) Local Operating System d) Link Overhead Signal

• Line of Service

• Local Operating Standard

• Loss of Signal Strength

• a) Line of Sight

6. What is the primary advantage of using multiple-input, multiple-output (MIMO) technology in wireless communication? a) Increased range b) Higher data rates c) Reduced power consumption d) Simplified network management

• d) Lower latency in connections

• a) Improved signal clarity

• b) Higher data rates

• c) Enhanced security features

7. Which modulation technique is commonly used in Wi-Fi networks? a) Amplitude Modulation (AM) b) Frequency Modulation (FM) c) Quadrature Amplitude Modulation (QAM) d) Phase Shift Keying (PSK)

• c) Quadrature Amplitude Modulation (QAM)

• Amplitude Shift Keying (ASK)

• Frequency Shift Keying (FSK)

• Pulse Width Modulation (PWM)

8. What is the main function of a router in a wireless network? a) To amplify the signal b) To connect devices to the internet c) To encrypt data d) To manage power consumption

• b) To connect devices to the internet

• To manage network traffic

• To store data locally

• To provide a firewall

9. Which of the following is a common security protocol used in Wi-Fi networks? a) WEP b) FTP c) HTTP d) SMTP

• SSH

• DNS

• WPA

• a) WEP

10. What does the term "bandwidth" refer to in wireless communication? a) The physical distance between devices b) The amount of data that can be transmitted in a given time c) The strength of the signal d) The type of modulation used.

• b) The amount of data that can be transmitted in a given time

• d) The frequency range used for transmission

• a) The total number of devices connected

• c) The duration of the connection