Card File Update

Front 1

10. The Internet is an example of what kind of WAN topology?

Back 1

c. mesh

Front 2

15. Which two of the following might cause excessive data collisions on an Ethernet network?

Back 2

b. The overall network length exceeds IEEE 802.3 standards for that network type.

e. A server on the network contains a faulty NIC.

Front 3

9. What type of network backbone is the most reliable?

Back 3

c. parallel

Front 4

8. Which of the following is a potential problem with daisy-chaining hubs?

Back 4

a. exceeding the maximum network length

Front 5

7. How do workstations in a ring topology negotiate their data transmissions?

Back 5

d. by using tokens

Front 6

6. What logical topology, or network transport model, relies most often on a star-wired
bus topology?

Back 6

a. Ethernet

Front 7

5. Why might you want to use a hierarchical topology?

Back 7

a. to differentiate levels of connectivity devices and workstation groups

Front 8

4. Most modern networks with more than a few nodes use a hybrid topology. True
or False?

Back 8

True

Front 9

3. What are the primary advantages of using a star topology over a ring or bus
topology?

Back 9

More reliable, more scaleable.

Front 10

2. What kind of topology is susceptible to signal bounce?

Back 10

b. bus

Front 11

1. Under what circumstance might you use a simple bus topology?

Back 11

c. when your LAN services few users

Front 12

14. What is the maximum number of addressable stations on a 10BaseT Ethernet network?

Back 12

e. 1024

Front 13

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?

Back 13

a. 2

Front 14

12. Describe the steps a workstation takes under the rules of CSMA/CD.

Back 14

Each node waits its turn before transmitting data, to avoid interfering with other nodes' transmissions.

Front 15

11. Why is packet switching more efficient than circuit switching?

Back 15

b. In packet switching, packets can take the quickest route between nodes and arrive independently of when other packets in their data stream arrive.

Front 16

35. Which two of the following might explain why network administrators prefer Gigabit Ethernet over ATM?

Back 16

a. Gigabit Ethernet is a more natural upgrade for their existing Ethernet networks.

b. Gigabit Ethernet is typically less expensive to implement than ATM.

Front 17

34. What type of switching do ATM networks use?

Back 17

a. circuit switching

Front 18

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?

Back 18

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.

Front 19

32. Besides their ring-based topologies, what else do FDDI and Token Ring networks have in common?

Back 19

c. Both use token passing to mediate data transmission.

Front 20

31. What type of Physical layer is required for FDDI?

Back 20

e. a single ring of multimode fiber

Front 21

30. Which of the following logical topologies is capable of the fastest throughput?

Back 21

e. ATM

Front 22

29. Which of the following IEEE standards describes Token Ring networks?

Back 22

d. IEEE 802.5

Front 23

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?

Back 23

d. media filter

Front 24

27. Modern Token Ring networks may transmit data at either 4, 16, 32, or 64 Mbps. True or False?

Back 24

False

Front 25

26. Which two of the following are disadvantages to using Token Ring networks rather than Ethernet networks?

Back 25

b. They are slower than Ethernet.
c. They require more expensive connectivity equipment than Ethernet

Front 26

25. What is the name of a hub used on a Token Ring network?

Back 26

a. Multistation Access Unit

Front 27

24. What type of TCP/IP protocol does LocalTalk use?

Back 27

b. MacTCP

Front 28

23. What are the minimum and maximum sizes for an Ethernet frame?

Back 28

c. 64 and 1518 bytes

Front 29

22. NIC device drivers come with what feature that reduces the need for you to
worry about frame types?

Back 29

c. autosense

Front 30

21. What is the purpose of a Frame Check Sequence field in an Ethernet frame?

Back 30

a. ensuring that data are received without errors at the destination node

Front 31

20. What is the purpose of padding in an Ethernet frame?

Back 31

e. ensuring that the data portion of the frame totals at least 46 bytes

Front 32

19. At what layer of the OSI Model does framing occur?

Back 32

b. Data Link layer

Front 33

18. What fields do all Ethernet frame types have in common?

Back 33

CSMA/CD--Carrier Sense Multiple Access with Collision Detection.

Front 34

17. In order to use demand priority on a network (for example, when running
100BaseVG), what type of hub is necessary?

Back 34

d. intelligent

Front 35

16. What type of media is best suited to 1 Gigabit Ethernet networks?

Back 35

a. fiber-optic