Deck 2: Network Design Essentials

Question 1

A physical ring is a(n)____ topology.

A)passive
B)active
C)standard
D)logical

Answer 1

B

Question 2

A(n)____ attached to each end of a cable prevents signals from bouncing on a physical bus.

A)server
B)hub
C)access point
D)terminator

Answer 2

D

Question 3

All computers, no matter what their topology, communicate in the same way: They address data to one or more computers and then transmit that data across the cable in the form of ____.

A)bits
B)bytes
C)bps
D)electronic signals

Answer 3

D

Question 4

A network's topology has a significant effect on its performance and growth potential.

Question 5

In a(n)____ topology network, computers and other devices attached to the network regenerate signals and are responsible for moving data through the network.

A)passive
B)active
C)physical
D)logical

Question 6

At the center of a logical ring implemented as a physical star is a device called a(n)____.

A)hub
B)switch
C)concentrator
D)access point

Question 7

All network designs today are based on ____ simple physical topologies.

A)two
B)three
C)four
D)five

Question 8

A physical bus topology is almost always implemented as a logical ____ topology.

A)ring
B)switching
C)bus
D)mesh

Question 9

In the simplest wireless configuration, two computers can communicate directly with one another in a(n)____ topology.

A)access point
B)point-to-point
C)infrastructure mode
D)ad hoc

Question 10

The first step in any network design is to evaluate the underlying requirements.

Question 11

A disadvantage of the ring topology lies in its inability to share network resources fairly.

Question 12

When wireless devices are configured to use an access point, they are said to be in ____ mode.

A)access point
B)point-to-point
C)infrastructure
D)ad hoc

Question 13

In a physical ring topology, signals typically travel in both directions around the ring.

Question 14

Because of the ____ phenomenon, a method to ensure that all signals stop when they reach the end of any segment in a bus topology must be devised.

A)signal bounce
B)signal propagation
C)cable termination
D)cable breaks

Question 15

In most situations, wireless LANs use a central device, called a(n)____, to control communications.

A)hub
B)switch
C)concentrator
D)access point

Question 16

At the center of a logical bus implemented as a physical star is a device called a(n)____.

A)hub
B)switch
C)concentrator
D)access point

Question 17

The mesh network topology is the most expensive one.

Question 18

The ring-based technologies implemented as a physical star include ____ and token ring.

A)SONET
B)Wi-Fi
C)Ethernet
D)FDDI

Question 19

Signals on a bus generated by the signal bounce effect significantly reduce the performance, but do not render computer communication on the bus network unworkable.

Question 20

On a bus network, open ends in a cable segment must be terminated to prevent ____.

A)signal propagation
B)cable breaks
C)signal bounce
D)cable termination

Question 21

A(n)____________________ topology might be the only reasonable topology choice in an environment that's not conducive to running cables, such as warehouses and old or historic buildings.

Question 22

Describe how the logical ring topology works.

Question 23

Describe the signal bounce phenomenon in a physical bus topology.

Question 24

Describe the process of sending the signal in a logical bus topology.

Question 25

A ____ network topology is the most fault tolerant one.

A)ring
B)mesh
C)bus
D)star

Question 26

The mesh topology formula for determining how many connections are needed for the number of nodes on a network, with n representing the number of nodes on the network is: ____.

A)n ( n -1)/2
B)n * n /2
C)n ( n +1)/2
D)n * n -1

Question 27

A hub-based bus topology should be considered if a small network (____ or fewer computers)is being constructed and keeping costs down is paramount.

A)5
B)10
C)25
D)50

Question 28

It's important to note that a bus topology is a(n)____________________ topology; this means that computers on the bus only listen for data being sent; they aren't responsible for moving data from one computer to the next.

Question 29

Describe how cable failure affects communications in a physical bus topology.

Question 30

In a(n)____ hub, such as a patch panel or punchdown block, the signal passes through the hub without any amplification or regeneration.

A)active
B)passive
C)repeating
D)switching

Question 31

How does the physical bus topology work?

Question 32

The logical topologies that dominate LANs include bus, ring, and ____________________.

Question 33

A hub-based ____ topology might be considered if a few computers are being added to an existing network, and the new computers are grouped in a somewhat remote location.

A)bus
B)star
C)ring
D)mesh

Question 34

FDDI stands for ___________________________________.

Question 35

Discuss the advantages and disadvantages of a physical star topology.

Question 36

Describe the signal propagation process in the physical bus topology.

Question 37

A logical bus topology is still in use on some physical topologies, in particular a(n)____________________.

Question 38

Generally, active hubs have many ports-eight or more-and so are sometimes called ____________________ repeaters or repeating hubs.

Question 39

The majority of hubs installed in networks today are ____ hubs.

A)active
B)passive
C)repeating
D)switching

Question 40

A central device, usually a(n)____, sits in the middle of the extended star topology.

A)hub
B)concentrator
C)switch
D)access point

Question 42

How does the functionality of a switch differ from the functionality of a hub?

Question 43

What is the extended star topology?

Question 44

Briefly describe the process involved in designing a simple network.