CCST CCST Wireless Networking & Standards 2 — Questions and Answers
Question 1: What technology does 802.11ax use to allow multiple clients to transmit and receive simultaneously, improving efficiency in dense environments?
- CSMA/CD
- OFDMA (Correct answer)
- TDMA
- DSSS
Correct answer: OFDMA
OFDMA (Orthogonal Frequency Division Multiple Access) in Wi-Fi 6 allows simultaneous communication with multiple clients by dividing channels into sub-carriers.
Question 2: A wireless client is experiencing weak signal and slow speeds. Which tool in Cisco's arsenal helps you identify channel utilization and neighboring APs?
- Cisco Prime Infrastructure (Correct answer)
- Cisco AnyConnect
- Cisco DNA Spaces
- Cisco ISE
Correct answer: Cisco Prime Infrastructure
Cisco Prime Infrastructure provides wireless RF heatmaps, channel utilization data, and neighboring AP visibility to assist in diagnosing wireless issues.
Question 3: Which wireless mode allows an access point to connect to a wired network and provide wireless connectivity to clients?
- Ad-hoc mode
- Infrastructure mode (Correct answer)
- Monitor mode
- Mesh mode
Correct answer: Infrastructure mode
In infrastructure mode, a wireless access point connects to a wired network and serves as a central hub for wireless client devices.
Question 4: What is the function of BSS (Basic Service Set) in wireless networking?
- It defines the encryption method used
- It refers to a single access point and all clients associated with it (Correct answer)
- It is a group of APs sharing the same SSID
- It is the VLAN assigned to wireless traffic
Correct answer: It refers to a single access point and all clients associated with it
A BSS (Basic Service Set) consists of a single access point and all the wireless client devices that are associated with it.
Question 5: Which wireless roaming standard allows a client to pre-authenticate to a nearby AP before disconnecting from the current one, reducing handoff time?
- 802.11r (Correct answer)
- 802.11k
- 802.11v
- 802.11u
Correct answer: 802.11r
802.11r (Fast BSS Transition) enables a wireless client to pre-authenticate to a target AP while still connected to the current AP, minimizing roaming delay.
Question 6: A Cisco lightweight access point (LAP) requires which component to function in a centralized wireless deployment?
- A RADIUS server
- A Wireless LAN Controller (WLC) (Correct answer)
- A DHCP relay agent
- A Layer 3 switch
Correct answer: A Wireless LAN Controller (WLC)
Lightweight APs (LAPs) offload most intelligence to a Wireless LAN Controller (WLC) and use the CAPWAP protocol to communicate with it.
CCST CCST Wireless Networking & Standards 2
What technology does 802.11ax use to allow multiple clients to transmit and receive simultaneously, improving efficiency in dense environments?