Deck 5: Topologies and Ethernet Standards

Question 1

In the 10GBase-LR standard,the L stands for ____.

A) long reach
B) LAN
C) long ring
D) little ring

Answer 1

A

Question 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

Answer 2

C

Question 3

The most popular method for connecting nodes on a network is circuit switching.

Answer 3

False

Question 4

A ____ occurs when two transmissions interfere with each other.

A) jam
B) collision
C) carrier sense
D) multiple access event

Question 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

Question 6

The most common 1-Gigabit Ethernet standard in use today is ____.

A) 1000Base-T
B) 1000Base-SX
C) 10GBase-SR
D) 1000Base-LX

Question 7

A serial backbone is the simplest kind of backbone.

Question 8

The smallest LANs do not have a backbone.

Question 9

Collectively,MPLS labels are sometimes called a ____.

A) header
B) shim
C) frame
D) title

Question 10

Most Ethernet networks are based on the star topology.

Question 11

A network's access method is its method of controlling how network nodes access the communications channel.

Question 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

Question 13

The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps over ____ medium.

A) coaxial
B) twisted pair
C) fiber
D) atmosphere

Question 14

A physical topology ____.

A) specifies device types
B) depicts a network in broad scope
C) specifies connectivity methods
D) specifies addressing schemes

Question 15

In a ring network,each workstation acts as a(n)____ for the transmission.

A) repeater
B) amplifier
C) terminator
D) manager

Question 16

The most common logical topologies are ____ and ring.

A) bus
B) star
C) wired
D) hybrid

Question 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

Question 18

A ____ is simply a linked series of devices.

A) star
B) star-wired ring
C) ring
D) daisy-chain

Question 19

A complex combination of pure topologies is known as a ____ topology.

A) mixed
B) hybrid
C) compound
D) mulitpart

Question 20

Without ____,a bus network would suffer from signal bounce.

A) hubs
B) repeaters
C) terminators
D) jamming

Question 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.

Question 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.

Question 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.

Question 24

____________________ is a component of a network's logical topology that determines how connections are created between nodes.

Question 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.

Question 26

Describe the advantage of the star topology.

Question 27

1In a(n)____________________ topology,every node on the network is connected through a central device,such as a hub,router,or switch.

Question 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.

Question 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

Question 30

A network backbone is the ____________________ that connects the hubs,switches,and routers on a network.

Question 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.

Question 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

Question 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

Question 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.

Question 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.

Question 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.

Question 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.

Question 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.

Question 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

Question 40

Explain why it is important to understand logical topologies.

Question 41

Briefly explain how CSMA/CD works.

Question 42

Within an Ethernet frame,describe what happens if fewer than 46 bytes of data are supplied by the higher layers.

Question 43

Within an Ethernet frame,describe the FCS (Frame Check Sequence)field and explain how it is used to make the header.

Question 44

Explain how the distributed backbone is connected.Include a description of its benefits.

Question 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.

Question 46

Explain the 5-4-3 rule of networking.

Question 47

Explain how the star-wired bus topology works.Include a description of its drawbacks and benefits.

Question 48

Briefly describe the IEEE 802.3af standard.Use an analogy and explain why it is useful.