Network Security question bank on “IEEE 802.11 WLAN”
1. __________ consists of two or more basic service sets interconnected by a distribution system.
a) Extended Service Set
b) Permuted Service Set
c) Complex Service Set
d) Multiplex Service Set
Answer: a
Clarification: Extended Service Set consists of two or more basic service sets interconnected by a distribution system.
2. IEEE 802.11 defines ___________ services that need to be provided by the wireless LAN to achieve functionality equivalent to that which is inherent to wired LANs.
a) 4
b) 7
c) 5
d) 9
Answer: d
Clarification: There are 9 services provided by IEEE 802.11.
3. ___________ services are used to control IEEE 302.11 LAN access and confidentiality.
a) 4
b) 5
c) 2
d) 3
Answer: d
Clarification: Three of the services provided by IEEE 302.11 LAN are used to control access and confidentiality.
4. __________ services are used to control IEEE 302.11 LAN delivery of MDSUs between stations.
a) 5
b) 6
c) 3
d) 2
Answer: b
Clarification: 6 services are used to control IEEE 302.11 LAN delivery of MDSUs between stations.
5. _________ services are implemented in every 802.11 station, including AP stations. _________ services are provided between BSSs.
a) Station, Distribution
b) Distribution, Station
c) Extended, Basic
d) Basic, Extended
Answer: a
Clarification: Station services are implemented in every 802.11 station, including AP stations. Distribution services are provided between BSSs.
6. The _________ service enables transfer of data between a station on an IEEE 802.11 LAN and a station on an integrated IEEE 802.x LAN.
a) extension
b) differentiation
c) integration
d) distribution
Answer: c
Clarification: The integration service enables transfer of data between a station on an IEEE 802.11 LAN and a station on an integrated IEEE 802.x LAN.
7. When a station moves only within the direct communication range of the communication stations of a single BSS, it is referred to as –
a) No transition
b) BSS transition
c) ESS transition
d) All of the mentioned
Answer: a
Clarification: When a station moves only within the direct communication range of the communication stations of a single BSS, it is referred to as No transition.
8. A station movement from one BSS in one ESS to a BSS within another ESS falls under –
a) No transition
b) BSS transition
c) ESS transition
d) All of the mentioned
Answer: c
Clarification: A station movement from one BSS in one ESS to a BSS within another ESS falls under ESS transition.
9. “Enables an established association to be transferred from one AP to another, allowing a mobile station to move from one BSS to another.” This can be referred to as-
a) Association
b) Reassociation
c) Disassociation
d) All of the mentioned
Answer: a
Clarification: This is known as association.