CCST CCST Wireless Networking & Standards 1 — Questions and Answers
Question 1: Which IEEE standard defines the 802.11ac (Wi-Fi 5) wireless specification operating exclusively in the 5 GHz band?
- 802.11a
- 802.11n
- 802.11ac (Correct answer)
- 802.11ax
Correct answer: 802.11ac
802.11ac (Wi-Fi 5) operates exclusively in the 5 GHz band and supports multi-user MIMO and channel widths up to 160 MHz.
Question 2: What is the maximum theoretical data rate supported by the 802.11ax (Wi-Fi 6) standard in ideal conditions?
- 3.5 Gbps
- 9.6 Gbps (Correct answer)
- 6.9 Gbps
- 1.3 Gbps
Correct answer: 9.6 Gbps
802.11ax (Wi-Fi 6) supports a maximum theoretical throughput of 9.6 Gbps using technologies like OFDMA, 1024-QAM, and 8×8 MU-MIMO.
Question 3: Which wireless security protocol replaced WPA2 and introduced Simultaneous Authentication of Equals (SAE)?
- WEP
- WPA
- WPA3 (Correct answer)
- TKIP
Correct answer: WPA3
WPA3 replaced WPA2 and introduced SAE (also known as Dragonfly handshake) to provide stronger protection against offline dictionary attacks.
Question 4: What does SSID stand for in wireless networking?
- Secure Signal Identification Data
- Service Set Identifier (Correct answer)
- System Signal Interface Device
- Subnet Set ID
Correct answer: Service Set Identifier
SSID (Service Set Identifier) is the name assigned to a wireless network that clients use to identify and connect to the correct access point.
Question 5: Which frequency band does the 802.11b standard use?
- 5 GHz
- 6 GHz
- 2.4 GHz (Correct answer)
- 60 GHz
Correct answer: 2.4 GHz
802.11b operates in the 2.4 GHz band, offering up to 11 Mbps and was one of the earliest widely adopted Wi-Fi standards.
Question 6: What is the purpose of a wireless channel in an 802.11 network?
- To encrypt wireless data
- To assign IP addresses to clients
- To divide the frequency band into smaller segments to reduce interference (Correct answer)
- To authenticate users to the network
Correct answer: To divide the frequency band into smaller segments to reduce interference
Wireless channels divide the available frequency spectrum into smaller segments, allowing multiple nearby networks to operate simultaneously with reduced interference.
CCST CCST Wireless Networking & Standards 1
Which IEEE standard defines the 802.11ac (Wi-Fi 5) wireless specification operating exclusively in the 5 GHz band?