In this section of Data Communication and Networking – Connecting LANs, Backbone Networks, and Virtual LANs MCQ (Multiple Choice) Based Questions and Answers,it cover 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.
- IEEE 802.11 standard for wireless LANs MCQs.
- Physical layer methods MCQs.
- Frequency-hopping spread spectrum (FHSS) MCQs.
- Direct sequence spread spectrum (DSSS) MCQs.
- Orthogonal frequency-division multiplexing (OFDM) MCQs.
- High-rate direct sequence spread spectrum (HR-DSSS) MCQs
- Bluetooth network MCQs
1. _________ is just a connector
- An active hub
- A passive hub
- either (a) or (b)
- neither (a) nor (b)
B. A passive hub
2. In a star-topology Ethernet LAN, _______ is just a point where the signals coming from different stations collide; it is the collision point.
- An active hub
- A passive hub
- either (a) or (b)
- neither (a) nor (b)
B. A passive hub
3. ________ is part of the media; its location in the Internet model is below the physical layer.
- An active hub
- A passive hub
- either (a) or (b)
- neither (a) nor (b)
B. A passive hub
4. A _______ is a device that operates only in the physical layer.
- passive hub
- repeater
- bridge
- router
B. repeater
5. A ________receives a signal and, before it becomes too weak or corrupted, regenerates the original bit pattern. It then sends the refreshed signal.
- passive hub
- repeater
- bridge
- router
B. repeater
6. A __________ forwards every frame; it has no filtering capability.
- passive hub
- repeater
- bridge
- router
B. repeater
7. ________ is actually a multiport repeater. It is normally used to create connections between stations in a physical star topology
- An active hub
- A passive hub
- either (a) or (b)
- neither (a) nor (b)
A. An active hub
8. A ________ operates in both the physical and the data link layer.
- passive hub
- repeater
- bridge
- router
C. bridge
9. A _______ can check the MAC addresses contained in the frame.
- passive hub
- repeater
- bridge
- router
C. bridge
10. A ______ has a table used in filtering decisions.
- passive hub
- repeater
- bridge
- none of the above
C. bridge
11. A ________ is a device in which the stations are completely unaware of its existence.
- passive hub
- repeater
- simple bridge
- transparent bridge
D. transparent bridge
12. IEEE 802.1d specification, defines _________ criteria for a transparent bridges.
- two
- three
- four
- none of the above
B. three
13. A spanning tree is a graph in which there is no _____.
- node
- branch
- loop
- arc
C. loop
14. In a bridged LAN, the _______ algorithm creates a topology in which each LAN can be reached from any other LAN through one path only.
- spanning tree
- binary tree
- unary tree
- none of the above
A. spanning tree
15. A three-layer switch is a kind of ________
- repeater
- bridge
- router
- none of the above
C. router
16. A two-layer switch is a ______.
- repeater
- bridge
- router
- none of the above
B. bridge
17. Some new two-layer switches, called _______ switches, have been designed to forward the frame as soon as they check the MAC addresses in the header of the frame
- cut-through
- go-through
- come-through
- none of the above
A. cut-through
18. A _______ is a three-layer device that handles packets based on their logical addresses.
- repeater
- bridge
- router
- none of the above
C. router
19. A ______ normally connects LANs and WANs in the Internet and has a table that is used for making decisions about the route.
- repeater
- bridge
- router
- none of the above
C. router
20. A ______ switch is a faster and more sophisticated router.
- two-layer
- three-layer
- four-layer
- none of the above
B. three-layer
21. A ________ is normally a computer that operates in all five layers of the Internet model or seven layers of OSI model.
- repeater
- bridge
- router
- gateway
D. gateway
22. A _____ can be used as a connecting device between two internetworks that use different models.
- repeater
- bridge
- router
- gateway
D. gateway
23. In a _____ backbone, the backbone is just one switch
- bus
- ring
- star
- none of the above
C. star
24. A ________ link acts as a LAN in a remote backbone connected by remote bridges
- point-to-point
- multipoint
- multidrop
- none of the above
A. point-to-point
25. VLANs create _________ domains
- unicast
- multicast
- broadcast
- none of the above
C. broadcast
26. In a(n) _______ configuration, the administrator types the port numbers, the IP addresses, or other characteristics, using the VLAN software.
- manual
- automatic
- semiautomatic
- none of the above
A. manual
27. In a(n) _____ configuration, the stations are automatically connected or disconnected from a VLAN using criteria defined by the administrator
- manual
- automatic
- semiautomatic
- none of the above
B. automatic
28. In a(n) ______ configuration, the initializing is done manually, with migrations done automatically.
- manual
- automatic
- semiautomatic
- none of the above
C. semiautomatic
29. A repeater is a connecting device that operates in the _______ layer of the Internet model.
- physical
- data link
- network
- all of the above
A. physical
30. A _______ regenerates a signal, connects segments of a LAN, and has no filtering capability.
- repeater
- bridge
- router
- none of the above
A. repeater
31. A _______ is a connecting device that operates in the physical and data link layers of the Internet model.
- repeater
- bridge
- router
- none of the above
B. bridge
32. A ________ bridge can forward and filter frames and automatically build its forwarding table.
- simple
- dual
- transparent
- none of the above
C. transparent
33. A bridge can use the _________ algorithm to create a loopless topology.
- binary tree
- spanning tree
- multiway tree
- none of the above
B. spanning tree
34. A _______ LAN allows several LANs to be connected.
- backbone
- wireless
- wired
- none of the above
A. backbone
35. A backbone is usually a ______.
- bus
- star
- either (a) or (b)
- neither (a) nor (b)
C. either (a) or (b)
36. A virtual local area network (VLAN) is configured by _________
- software
- physical wiring
- hardware
- none of the above
A. software
37. Membership in a VLAN can be based on _________.
- port numbers
- MAC addresses
- IP addresses
- all of the above
D. all of the above
38. VLANs can_________.
- reduce network traffic
- provide an extra measure of security
- either (a) or (b)
- both (a) and (b)
D. both (a) and (b)