In this section of Data Communication and Networking – Wireless LANs MCQ (Multiple Choice) Based Questions and Answers,it covers the below lists of topic, All the Multiple Choice Question and Answer (MCQs) have been compiled from the books of Data Communication and Networking by The well known author behrouz forouzan.
This Section covers below lists of topics.
- Ethernet MCQs.
- IEEE 802.3 standard MCQs.
- LLC sublayer and the MAC sublayer MCQs.
- 10Base5 (thick Ethernet), 10Base2 (thin Ethernet), 10Base-T (twisted-pair Ethernet), and 10Base-FL (fiber link Ethernet) MCQs.
- Fast Ethernet MCQs.
- Common Fast Ethernet implementations , 100Base-TX (two pairs of twisted-pair cable), 100Base-FX (two fiber-optic cables), and 100Base-T4 (four pairs of voice-grade, or higher, twisted-pair cable) MCQs.
- Gigabit Ethernet MCQs.
- common Gigabit Ethernet implementations , 1000Base-SX (two optical fibers and a shortwave laser source), 100Base-LX (two optical fibers and a long-wave laser source), and 100Base-T (four twisted pairs) MCQs.
1. In IEEE 802.11, when a frame is coming from an AP and going to a station, the address flag is _______.
- 00
- 01
- 10
- 11
2. In IEEE 802.11, when a frame is going from a station to an AP, the address flag is _____
- 00
- 01
- 10
- 11
3. In IEEE 802.11, when a frame is going from one AP to another AP in a wireless distribution system, the address flag is _____
- 00
- 01
- 10
- 11
4. The IEEE 802.11 standard for wireless LANs defines two services: ______ and _______
- BSS; ASS
- ESS; SSS
- BSS; ESS
- BSS; DCF
5. In IEEE 802.11, the access method used in the DCF sublayer is _________
- ALOHA
- CSMA/CA
- CSMA/CD
- none of the above
6. In IEEE 802.11, the access method used in the PCF sublayer is ______
- contention
- controlled
- polling
- none of the above
7. In IEEE 802.11, the ______ is a timer used for collision avoidance
- NAV
- BSS
- ESS
- none of the above
8. In IEEE 802.11, the MAC layer frame has ______ fields
- four
- five
- six
- none of the above
9. In IEEE 802.11, the addressing mechanism can include up to ______addresses
- four
- five
- six
- none of the above
10. The original IEEE 802.11, uses _________
- FHSS
- DSSS
- OFDM
- either (a) or (b)
11. The IEEE 802.11a, uses _________
- FHSS
- DSSS
- OFDM
- either (a) or (b)
12. The IEEE 802.11b, uses _________
- FHSS
- DSSS
- OFDM
- either (a) or (b)
13. The IEEE 802.11g, uses _________
- FHSS
- DSSS
- OFDM
- either (a) or (b)
14. The original IEEE 802.11, has a data rate of _____Mbps.
- 1
- 6
- 11
- 22
15. IEEE 802.11a, has a data rate of _____Mbps
- 1
- 2
- 6
- none of the above
16. IEEE 802.11b, has a data rate of _____Mbps
- 1
- 2
- 5.5
- none of the above
17. IEEE 802.11g, has a data rate of _____Mbps
- 1
- 2
- 11
- 22
18. The IEEE 802.11 wireless LANs use ________ types of frames
- four
- five
- six
- none of the above
19. Bluetooth is a _______ technology that connects devices (called gadgets) in a small area
- wired LAN
- wireless LAN
- VLAN
- none of the above
20. A Bluetooth network is called a ________.
- piconet
- scatternet
- bluenet
- none of the above
21. In Bluetooth, multiple ________ form a network called a _________
- scatternet; piconets
- piconets: scatternet
- piconets: bluenet
- bluenet; scatternet
22. A Bluetooth network consists of _____ primary device(s) and up to ____ secondary devices.
- one; five
- five; three
- two; six
- one; seven
23. The RTS and CTS frames in CSMA/CA ____ solve the hidden station problem. The RTS and CTS frames in CSMA/CA ____ solve the exposed station problem.
- can; cannot
- cannot; can
- can; can
- cannot; cannot
24. In Bluetooth, the current data rate is ____Mbps
- 2
- 5
- 11
- none of the above
25. In Bluetooth, the _______ layer is roughly equivalent to the physical layer of the Internet model.
- radio
- baseband
- L2CAP
- none of the above
26. In Bluetooth, the _____layer is roughly equivalent to the MAC sublayer in LANs.
- radio
- baseband
- L2CAP
- none of the above
27. In Bluetooth, the L2CAP sublayer, is roughly equivalent to the LLC sublayer in LANs
- radio
- baseband
- L2CAP
- none of the above
28. The access method in Bluetooth is ________
- FDMA
- TDD-TDMA
- CDMA
- none of the above
29. In Bluetooth, the _____ link is used when avoiding latency (delay in data delivery) is more important than integrity (error-free delivery).
- SCO
- ACL
- ACO
- SCL
30. In Bluetooth, the _____ link is used when data integrity is more important than avoiding latency.
- SCO
- ACL
- ACO
- SCL
31. IEEE has defined the specifications for a wireless LAN, called _______, which covers the physical and data link layers.
- IEEE 802.3
- IEEE 802.5
- IEEE 802.11
- IEEE 802.2
32. In IEEE 802.11, a ___ is made of stationary or mobile wireless stations and an optional central base station, known as the access point (AP).
- ESS
- BSS
- CSS
- none of the above
33. In IEEE 802.11, a BSS without an AP is called an _________.
- an ad hoc architecture
- an infrastructure network
- either (a) or (b)
- neither (a) nor (b)
34. In IEEE 802.11, a BSS with an AP is sometimes referred to as ____________
- an ad hoc architecture
- an infrastructure network
- either (a) or (b)
- neither (a) nor (b)
35. In IEEE 802.11, communication between two stations in two different BSSs usually occurs via two ________.
- BSSs
- ESSs
- APs
- none of the above
36. In IEEE 802.11, a station with ________ mobility is either stationary (not moving) or moving only inside a BSS.
- no-transition
- BSS-transition
- ESS-transition
- none of the above
37. In IEEE 802.11, a station with ________mobility can move from one BSS to another, but the movement is confined inside one ESS.
- no-transition
- BSS-transition
- ESS-transition
- none of the above
38. In IEEE 802.11, a station with ________ mobility can move from one ESS to another.
- no-transition
- BSS-transition
- ESS-transition
- none of the above
39. In IEEE 802.11, _______ is an optional access method that can be implemented in an infrastructure network (not in an ad hoc network)
- DCF
- PCF
- either (a) or (b)
- neither (a) nor (b)
40. In IEEE 802.11, when a frame is going from one station in a BSS to another without passing through the distribution system, the address flag is _____
- 00
- 01
- 10
- 11