Updated 2.3 Flashcards
What is the maximum theoretical speed of 802.11ac? Options: (A) 1.3 Gbps, (B) 2.4 Gbps, (C) 6.9 Gbps, (D) 9.6 Gbps
Correct Answer: (C) 6.9 Gbps. Explanation: 802.11ac supports speeds up to 6.9 Gbps under optimal conditions.
Which 802.11 standard is also known as Wi-Fi 6? Options: (A) 802.11ac, (B) 802.11ax, (C) 802.11n, (D) 802.11g
Correct Answer: (B) 802.11ax. Explanation: Wi-Fi 6, or 802.11ax, offers better performance in dense environments and higher speeds.
Which 802.11 standard operates exclusively on the 5 GHz band? Options: (A) 802.11b, (B) 802.11g, (C) 802.11a, (D) 802.11n
Correct Answer: (C) 802.11a. Explanation: 802.11a is an older standard designed to work only on the 5 GHz frequency band.
Which frequency band provides better range and wall penetration? Options: (A) 2.4 GHz, (B) 5 GHz, (C) 6 GHz, (D) 60 GHz
Correct Answer: (A) 2.4 GHz. Explanation: The 2.4 GHz band has longer wavelengths, allowing better range and penetration through walls.
What is a major benefit of the 5 GHz band over 2.4 GHz? Options: (A) Wider coverage, (B) Faster speeds, (C) Less interference, (D) Both B and C
Correct Answer: (D) Both B and C. Explanation: The 5 GHz band supports higher speeds and experiences less interference.
How many non-overlapping channels are available in the 2.4 GHz band? Options: (A) 1, (B) 3, (C) 6, (D) 14
Correct Answer: (B) 3. Explanation: Channels 1, 6, and 11 are the three non-overlapping channels in the 2.4 GHz band.
What is the maximum width of a Wi-Fi channel in the 5 GHz band? Options: (A) 20 MHz, (B) 40 MHz, (C) 80 MHz, (D) 160 MHz
Correct Answer: (D) 160 MHz. Explanation: Wider channels, such as 160 MHz, allow for faster data transmission in the 5 GHz band.
What is a key requirement for long-range fixed wireless communication? Options: (A) High-power amplifiers, (B) Line of sight, (C) Multiple routers, (D) Fiber-optic cable
Correct Answer: (B) Line of sight. Explanation: Long-range fixed wireless requires an unobstructed line of sight between antennas.
Which type of antenna is commonly used for long-range fixed wireless? Options: (A) Omnidirectional, (B) Yagi, (C) Dipole, (D) Patch
Correct Answer: (B) Yagi. Explanation: Yagi antennas focus the signal in a specific direction, making them ideal for long-range communication.
What frequency bands are commonly used for long-range fixed wireless? Options: (A) 2.4 GHz, (B) 5 GHz, (C) Both A and B, (D) 60 GHz
Correct Answer: (C) Both A and B. Explanation: Both 2.4 GHz and 5 GHz bands are used depending on the application and distance.
What is an advantage of using long-range fixed wireless over fiber-optic? Options: (A) Higher speeds, (B) Easier installation, (C) Lower latency, (D) Increased reliability
Correct Answer: (B) Easier installation. Explanation: Fixed wireless is quicker and less expensive to install compared to fiber-optic networks.
What is the maximum theoretical speed of 802.11n? Options: (A) 300 Mbps, (B) 600 Mbps, (C) 1.3 Gbps, (D) 2.4 Gbps
Correct Answer: (B) 600 Mbps. Explanation: 802.11n supports up to 600 Mbps with multiple spatial streams.
Which Wi-Fi standard first introduced dual-band functionality? Options: (A) 802.11b, (B) 802.11a, (C) 802.11g, (D) 802.11n
Correct Answer: (D) 802.11n. Explanation: 802.11n was the first standard to support both 2.4 GHz and 5 GHz bands.
What does MU-MIMO stand for? Options: (A) Multi-User Multiple Input Multiple Output, (B) Multi-User Modular Input Modular Output, (C) Multi-Utility Matrix Input Output, (D) Multi-User Multi-Layer Interface Optimization
Correct Answer: (A) Multi-User Multiple Input Multiple Output. Explanation: MU-MIMO improves network performance by serving multiple devices simultaneously.
What is a benefit of Wi-Fi 6 over Wi-Fi 5? Options: (A) Faster speeds, (B) Better battery life for devices, (C) Improved efficiency in crowded networks, (D) All of the above
Correct Answer: (D) All of the above. Explanation: Wi-Fi 6 offers faster speeds, battery-saving features, and enhanced performance in dense networks.
