Deck 5: Topologies and Ethernet Standards
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Deck 5: Topologies and Ethernet Standards
1
In the 10GBase-LR standard,the L stands for ____.
A) long reach
B) LAN
C) long ring
D) little ring
A) long reach
B) LAN
C) long ring
D) little ring
A
2
In packet switching,when packets reach their destination node,the node ____ them based on their control information.
A) disassembles
B) deletes
C) reassembles
D) separates
A) disassembles
B) deletes
C) reassembles
D) separates
C
3
The most popular method for connecting nodes on a network is circuit switching.
False
4
A ____ occurs when two transmissions interfere with each other.
A) jam
B) collision
C) carrier sense
D) multiple access event
A) jam
B) collision
C) carrier sense
D) multiple access event
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5
All Ethernet networks,independent of their speed or frame type,use an access method called ____.
A) CSMA
B) CSMA/DC
C) CSAM/CD
D) CSMA/CD
A) CSMA
B) CSMA/DC
C) CSAM/CD
D) CSMA/CD
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6
The most common 1-Gigabit Ethernet standard in use today is ____.
A) 1000Base-T
B) 1000Base-SX
C) 10GBase-SR
D) 1000Base-LX
A) 1000Base-T
B) 1000Base-SX
C) 10GBase-SR
D) 1000Base-LX
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7
A serial backbone is the simplest kind of backbone.
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8
The smallest LANs do not have a backbone.
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9
Collectively,MPLS labels are sometimes called a ____.
A) header
B) shim
C) frame
D) title
A) header
B) shim
C) frame
D) title
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10
Most Ethernet networks are based on the star topology.
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11
A network's access method is its method of controlling how network nodes access the communications channel.
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12
On an Ethernet network,a(n)____ is the portion of a network in which collisions occur if two nodes transmit data at the same time.
A) collision domain
B) crash domain
C) interference domain
D) duplicate domain
A) collision domain
B) crash domain
C) interference domain
D) duplicate domain
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13
The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps over ____ medium.
A) coaxial
B) twisted pair
C) fiber
D) atmosphere
A) coaxial
B) twisted pair
C) fiber
D) atmosphere
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14
A physical topology ____.
A) specifies device types
B) depicts a network in broad scope
C) specifies connectivity methods
D) specifies addressing schemes
A) specifies device types
B) depicts a network in broad scope
C) specifies connectivity methods
D) specifies addressing schemes
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15
In a ring network,each workstation acts as a(n)____ for the transmission.
A) repeater
B) amplifier
C) terminator
D) manager
A) repeater
B) amplifier
C) terminator
D) manager
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16
The most common logical topologies are ____ and ring.
A) bus
B) star
C) wired
D) hybrid
A) bus
B) star
C) wired
D) hybrid
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17
The 10-gigabit fiber optic standard with the shortest segment length is ____.
A) 10GBase-T
B) 10GBase-SR
C) 10GBase-LR
D) 10GBase-ER
A) 10GBase-T
B) 10GBase-SR
C) 10GBase-LR
D) 10GBase-ER
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18
A ____ is simply a linked series of devices.
A) star
B) star-wired ring
C) ring
D) daisy-chain
A) star
B) star-wired ring
C) ring
D) daisy-chain
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19
A complex combination of pure topologies is known as a ____ topology.
A) mixed
B) hybrid
C) compound
D) mulitpart
A) mixed
B) hybrid
C) compound
D) mulitpart
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20
Without ____,a bus network would suffer from signal bounce.
A) hubs
B) repeaters
C) terminators
D) jamming
A) hubs
B) repeaters
C) terminators
D) jamming
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21
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
The most common 1-Gigabit Ethernet.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
The most common 1-Gigabit Ethernet.
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22
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Follows the 5-4-3 rule of networking.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Follows the 5-4-3 rule of networking.
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23
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Also known as Gigabit Ethernet.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Also known as Gigabit Ethernet.
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24
____________________ is a component of a network's logical topology that determines how connections are created between nodes.
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25
As part of CSMA/CD,a process known as ____________________ allows the NIC issue a special 32-bit sequence that indicates to the rest of the network nodes that its previous transmission was faulty and that those data frames are invalid.
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26
Describe the advantage of the star topology.
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27
1In a(n)____________________ topology,every node on the network is connected through a central device,such as a hub,router,or switch.
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28
Because of its support for multiple Network layer protocols and because it uses fewer bytes as overhead,____________________ is the frame type most commonly used on contemporary Ethernet networks.
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29
Within Ethernet frame types,the ____ signals to the receiving node that data is incoming and indicates when the data flow is about to begin.
A) FCS
B) header
C) preamble
D) frame
A) FCS
B) header
C) preamble
D) frame
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30
A network backbone is the ____________________ that connects the hubs,switches,and routers on a network.
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31
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Also known as Fast Ethernet.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Also known as Fast Ethernet.
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32
The data portion of an Ethernet frame may contain ____ bytes of information.
A) 46
B) 46 to 1500
C) 1500
D) more than 1500
A) 46
B) 46 to 1500
C) 1500
D) more than 1500
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33
The Ethernet_II frame type contains a 2-byte ____ field which differentiates it from the older Ethernet_802.3 and Ethernet_802.2 frame types.
A) data
B) length
C) source
D) type
A) data
B) length
C) source
D) type
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34
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
IEEE standard for fiber-optic Ethernet networks transmitting data at 10 Gbps.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
IEEE standard for fiber-optic Ethernet networks transmitting data at 10 Gbps.
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35
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
IEEE standard for fiber-optic Ethernet networks transmitting data at 1 Gbps.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
IEEE standard for fiber-optic Ethernet networks transmitting data at 1 Gbps.
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36
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
IEEE standard for fiber-optic Ethernet networks transmitting data at 100 Mbps.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
IEEE standard for fiber-optic Ethernet networks transmitting data at 100 Mbps.
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37
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Refers to the PoE device that receives the power.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Refers to the PoE device that receives the power.
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38
MATCHING
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Refers to the PoE device that supplies the power.
Match each item with a statement below:
a.PSE
f.802.3ae
b.1000Base-LX
g.802.3z
c.10Base-T
h.802.3u
d.100Base-T
i.PD
e.1000Base-T
Refers to the PoE device that supplies the power.
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39
Given their long-distance capabilities,10GBase-ER and 10GBase-EW are best suited for use on ____.
A) VANs
B) MANs
C) LANs
D) WANs
A) VANs
B) MANs
C) LANs
D) WANs
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40
Explain why it is important to understand logical topologies.
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41
Briefly explain how CSMA/CD works.
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42
Within an Ethernet frame,describe what happens if fewer than 46 bytes of data are supplied by the higher layers.
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43
Within an Ethernet frame,describe the FCS (Frame Check Sequence)field and explain how it is used to make the header.
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44
Explain how the distributed backbone is connected.Include a description of its benefits.
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45
Briefly describe the Ethernet SNAP frame type.Include an explanation of the drawback that keeps it from being implemented on networks instead of Ethernet _II frames.
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46
Explain the 5-4-3 rule of networking.
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47
Explain how the star-wired bus topology works.Include a description of its drawbacks and benefits.
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48
Briefly describe the IEEE 802.3af standard.Use an analogy and explain why it is useful.
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