Network Security online quiz on “IEEE 802.11 WLAN”.
1. Which layer in the IEEE 802.11 protocol stack has the function of flow control and error control?
a) Physical Layer
b) Logic Link Control Layer
c) Medium Access Layer
d) None of the mentioned
Answer: b
Clarification: Logic Link Layer has the function of flow control and error control.
2. With respect to IEEE 802.11 Wireless LAN, MSDU stands for-
a) MAC service data unit.
b) Main server data user
c) Multiframe service datagram usage
d) MAC server device usage
Answer: a
Clarification: MSDU stands for MAC service data unit.
3. Frequency band definition and Wireless signal encoding are functions of which layer?
a) Physical Layer
b) Logic Link Control Layer
c) Medium Access Layer
d) None of the mentioned
Answer: a
Clarification: Frequency band definition and Wireless signal encoding are functions of the Physical Layer.
4. The correct order of the of the MAC header is-
a) MAC Control, Destination MAC Address, Source MAC Address
b) Destination MAC Address, Source MAC Address, MAC Control
c) Source MAC Address, Destination MAC Address, MAC Control
d) none of the mentioned
Answer: a
Clarification: The correct order of arrangement is MAC Control, Destination MAC Address, Source MAC Address.
5. CRC is a component of the MAC trailer.
a) True
b) False
Answer: a
Clarification: CRC is a component of the MAC trailer. The statement is true.
6. Reliable data delivery and Wireless access control protocols are functions of which layer?
a) Physical Layer
b) Logic Link Control Layer
c) Medium Access Layer
d) None of the mentioned
Answer: c
Clarification: Reliable data delivery and Wireless access control protocols are functions of the Medium Access Layer.
7. Which layer keeps track of the frames that have been transmitted and received?
a) Physical Layer
b) Logic Link Control Layer
c) Medium Access Layer
d) None of the mentioned
Answer: b
Clarification: The LLC keeps track of the frames that have been transmitted and received.
8. The smallest building block of a wireless LAN is –
a) Unit server set
b) Unit service set
c) Basic server set
d) Basic service set
Answer: d
Clarification: The smallest building block of a wireless LAN is Basic service set (BSS).
9. In an IBSS system all communications are done via access points (APs).
a) True
b) False
Answer: b
Clarification: IBSS stands for Independent Basic Service Set.