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35 Cards in this Set

  • Front
  • Back
10. The Internet is an example of what kind of WAN topology?
c. mesh
15. Which two of the following might cause excessive data collisions on an Ethernet network?
b. The overall network length exceeds IEEE 802.3 standards for that network type.

e. A server on the network contains a faulty NIC.
9. What type of network backbone is the most reliable?
c. parallel
8. Which of the following is a potential problem with daisy-chaining hubs?
a. exceeding the maximum network length
7. How do workstations in a ring topology negotiate their data transmissions?
d. by using tokens
6. What logical topology, or network transport model, relies most often on a star-wired
bus topology?
a. Ethernet
5. Why might you want to use a hierarchical topology?
a. to differentiate levels of connectivity devices and workstation groups
4. Most modern networks with more than a few nodes use a hybrid topology. True
or False?
3. What are the primary advantages of using a star topology over a ring or bus
More reliable, more scaleable.
2. What kind of topology is susceptible to signal bounce?
b. bus
1. Under what circumstance might you use a simple bus topology?
c. when your LAN services few users
14. What is the maximum number of addressable stations on a 10BaseT Ethernet network?
e. 1024
13. On a 100BaseT (Fast Ethernet) network, what is the maximum number of hubs that can be connected along the bus of a star-wired bus topology?
a. 2
12. Describe the steps a workstation takes under the rules of CSMA/CD.
Each node waits its turn before transmitting data, to avoid interfering with other nodes' transmissions.
11. Why is packet switching more efficient than circuit switching?
b. In packet switching, packets can take the quickest route between nodes and arrive independently of when other packets in their data stream arrive.
35. Which two of the following might explain why network administrators prefer Gigabit Ethernet over ATM?
a. Gigabit Ethernet is a more natural upgrade for their existing Ethernet networks.

b. Gigabit Ethernet is typically less expensive to implement than ATM.
34. What type of switching do ATM networks use?
a. circuit switching
33. You have been asked to serve on a technical committee planning an upgrade from your university’s FDDI network to a Gigabit Ethernet network.The rest of the committee asserts this will be a relatively simple transition.What concern should you raise that contradicts their assertion?
b. The maximum allowable distance for a FDDI network is longer than that of an
Ethernet network, so the existing FDDI network will need to be divided into
smaller subnetworks.
32. Besides their ring-based topologies, what else do FDDI and Token Ring networks have in common?
c. Both use token passing to mediate data transmission.
31. What type of Physical layer is required for FDDI?
e. a single ring of multimode fiber
30. Which of the following logical topologies is capable of the fastest throughput?
e. ATM
29. Which of the following IEEE standards describes Token Ring networks?
d. IEEE 802.5
28. If you were working on a Token Ring network that used cables with DB-9 con-nectors and needed to connect a NIC that contained an RJ-45 receptor, which of the following would help you accomplish your goal?
d. media filter
27. Modern Token Ring networks may transmit data at either 4, 16, 32, or 64 Mbps. True or False?
26. Which two of the following are disadvantages to using Token Ring networks rather than Ethernet networks?
b. They are slower than Ethernet.
c. They require more expensive connectivity equipment than Ethernet
25. What is the name of a hub used on a Token Ring network?
a. Multistation Access Unit
24. What type of TCP/IP protocol does LocalTalk use?
b. MacTCP
23. What are the minimum and maximum sizes for an Ethernet frame?
c. 64 and 1518 bytes
22. NIC device drivers come with what feature that reduces the need for you to
worry about frame types?
c. autosense
21. What is the purpose of a Frame Check Sequence field in an Ethernet frame?
a. ensuring that data are received without errors at the destination node
20. What is the purpose of padding in an Ethernet frame?
e. ensuring that the data portion of the frame totals at least 46 bytes
19. At what layer of the OSI Model does framing occur?
b. Data Link layer
18. What fields do all Ethernet frame types have in common?
CSMA/CD--Carrier Sense Multiple Access with Collision Detection.
17. In order to use demand priority on a network (for example, when running
100BaseVG), what type of hub is necessary?
d. intelligent
16. What type of media is best suited to 1 Gigabit Ethernet networks?
a. fiber-optic