Deck 3: Network Topologies and Technologies

Question 1

A network's logical topology often depends on the central device's electronics.

Answer 1

True

Question 2

The physical bus topology is no longer used because it required extra cable to connect all the computers and required a central device.

Answer 2

False

Question 3

Which of the following is true about collisions?

A) They can only happen with switches
B) They are a problem with Token Ring networks
C) They can occur on Ethernet half-duplex networks
D) Fewere computers means more collisions

Answer 3

C

Question 4

What is the most common topology and technology combination in use today?

A) logical bus / Ethernet
B) logical bus / wireless LAN
C) logical ring / token ring
D) switched / Ethernet

Question 5

Which of the following is the physical topology that is daisy-chained like a bus and in which the cabling is brought around from the last device to the first device?

A) physical bus
B) physical star
C) physical ring
D) point-to-point

Question 6

A network's physical topology refers to the arrangement of the cabling and how the devices connect to each other.

Question 7

Which 10 Gigabit standard uses MMF cabling for distances up to 300 meters and is often used for SONET campus networks?

A) 10GBaseLW
B) 10GBaseSR
C) 10GBaseEW
D) 10GBaseSW

Question 8

What is in an Ethernet frame's trailer?

A) source MAC address
B) destination MAC address
C) frame payload
D) cyclic redundancy check

Question 9

Which of the following is NOT an advantage of a physical star?

A) easier network upgrades
B) centralized monitoring and management of traffic
C) use of faster technologies
D) single point of failure

Question 10

In which topology does a central device communicate with two or more other devices and is used in WANs where a main office has connections to several branch offices via a router?

A) logical bus
B) logical star
C) switched
D) Point-to-multipoint

Question 11

In a physical bus topology,both ends of the medium must be terminated in order to prevent what?

A) signal propagation
B) signal bounce
C) signal degradation
D) collision

Question 12

What type of logical topology is at work when using an Ethernet hub?

A) logical bus
B) logical ring
C) switched topology
D) hierarchical topology

Question 13

When discussing Ethernet standards,what does the XBaseY terminology refer to?

A) the length or type of cabling,the transmission speed,and the type of transmissions
B) the transmission speed,the type of transmissions,and the length or type of cabling
C) the transmission speed,the length or type of cabling,and the type of transmissions
D) the length or type of cabling,the type of transmissions,and the transmission speed

Question 14

Which of the following is NOT a characteristic of Unshielded Twisted Pair cabling?

A) contains four pairs of copper wire
B) susceptible to electrical interference
C) maximum speed is 100 Mbps
D) comes in numbered categories

Question 15

A point-to-point topology is typically used for WAN connections or wireless bridges.

Question 16

What is an advantage of a point-to-point topology?

A) data travels on a dedicated link
B) provides redundancy and fault tolerance
C) relatively inexpensive
D) a reliable and fast backbone

Question 17

A collision can occur on a switch only if the switch is operating in full-duplex mode.

Question 18

In a token ring network,what is the central device called?

A) multiport Ethernet switch
B) multiservice switch
C) multisession drive
D) multistation access unit

Question 19

What is the media access method used by Ethernet?

A) CSMA/CD
B) Token passing
C) CSMA/CA
D) Polling

Question 20

Which of the folloowing is NOT a field in an Ethernet frame?

A) Time-to-Live
B) Type
C) FCS
D) Source MAC

Question 21

The physical ____________ topology is a continuous length of cable connecting one computer to another in daisy-chain fashion and terminated at both ends.

Question 22

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
access method used by Wi-Fi

Question 23

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
direct connection between two devices

Question 24

In a large network,in which several switches need to be connected together,usually one device is placed at the center,forming a(n)____________ star.

Question 25

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
how the cables connect one device to another

Question 26

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
how the data travels from one device to another

Question 27

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
can occur when two devices on the same medium transmit simultaneously

Question 28

What is the IEEE standard governing wireless networking?

A) 802.3
B) 802.5
C) 802.3ab
D) 802.11

Question 29

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
uses an analog signal to send multiple signals simultaneously

Question 30

With a ___________________ antenna,signals are focused in a single direction,which makes them ideal for placement at one end of long,narrow spaces or to cover distances between buildings.

Question 31

With which kind of Wi-Fi antennas does the signal radiate out with equal strength in all directions?

A) Omnidirectional
B) Unidirectional
C) Multidirectional
D) Semidirectional

Question 32

What is a result of absorption on Wi-Fi signals?

A) multipath
B) amplification
C) attenuation
D) reflection

Question 33

A ___________ topology is fully redundant and is the most expensive to implement.

Question 34

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
connects every device to every other device

Question 35

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
devices on the network must listen first before they can transmit

Question 36

When a wireless computer connects with an AP before it connects with other devices,it is operating in ____________ mode.

Question 37

When a wireless computer uses a peer-to-peer connection to directly connect to another wireless computer,it is operating in what mode?

A) infrastructure
B) ad hoc
C) hot spot
D) Wi-Fi

Question 38

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
sends a digital signal using the entire bandwidth

Question 39

Match each item with a statement below:
a.logical topology
b.physical topology
c.mesh topology
d.point-to-point topology
e.collision
f.CSMA/CA
g.CSMA/CD
h.media access method
i.broadband
j.baseband
a set of rules governing how and when the network medium can be accessed for transmission

Question 40

In wireless networks,what type of media access control is used?

A) CSMA/CD
B) Polling
C) CSMA/CA
D) Token passing

Question 41

What are the advantages and disadvantages of a physical star topology?

Question 42

What are the three primary logical topologies? Briefly describe each one.

Question 43

Describe the structure of an Ethernet frame.

Question 44

What is the hidden node problem on Wi-Fi networks and what can be used to counteract the problem?

Question 45

List the five wireless standards and their maximum data transfer speed.

Question 46

In a physical bus topology,why do the ends of the cable have to be terminated?

Question 47

What is the difference between operating in half-duplex mode or full-duplex mode and why does it eliminate collisions?

Question 48

What is CSMA/CD and how does it work?

Question 49

List five common types of Wi-Fi signal interference.

Question 50

What is the difference between a network's physical topology and its logical topology?