True/False
Indicate whether the
statement is true or false.
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1.
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Most Ethernet networks are based on the star topology.
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2.
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The smallest LANs do not have a backbone.
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3.
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A serial backbone is the simplest kind of backbone.
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4.
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The most popular method for connecting nodes on a network is circuit
switching.
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5.
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A network’s access method is its method of controlling how network nodes
access the communications channel.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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6.
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A physical topology ____.
a. | specifies device types | c. | specifies connectivity methods | b. | depicts a network in
broad scope | d. | specifies
addressing schemes |
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7.
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Without ____, a bus network would suffer from signal bounce.
a. | hubs | c. | terminators | b. | repeaters | d. | jamming |
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8.
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In a ring network, each workstation acts as a(n) ____ for the
transmission.
a. | repeater | c. | terminator | b. | amplifier | d. | manager |
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9.
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A complex combination of pure topologies is known as a ____ topology.
a. | mixed | c. | compound | b. | hybrid | d. | mulitpart |
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10.
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The most common logical topologies are ____ and ring.
a. | bus | c. | wired | b. | star | d. | hybrid |
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11.
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A ____ is simply a linked series of devices.
a. | star | c. | ring | b. | star-wired ring | d. | daisy-chain |
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12.
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In packet switching, when packets reach their destination node, the node ____
them based on their control information.
a. | disassembles | c. | reassembles | b. | deletes | d. | separates |
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13.
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Collectively, MPLS labels are sometimes called a ____.
a. | header | c. | frame | b. | shim | d. | title |
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14.
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All Ethernet networks, independent of their speed or frame type, use an access
method called ____.
a. | CSMA | c. | CSAM/CD | b. | CSMA/DC | d. | CSMA/CD |
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15.
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A ____ occurs when two transmissions interfere with each other.
a. | jam | c. | carrier sense | b. | collision | d. | multiple access
event |
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16.
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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 | c. | interference domain | b. | crash domain | d. | duplicate
domain |
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17.
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1000Base-T is a standard for achieving throughputs ____ times faster than Fast
Ethernet over copper cable.
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18.
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The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps
over ____ medium.
a. | coaxial | c. | fiber | b. | twisted pair | d. | atmosphere |
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19.
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The most common 1-Gigabit Ethernet standard in use today is ____.
a. | 1000Base-T | c. | 10GBase-SR | b. | 1000Base-SX | d. | 1000Base-LX |
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20.
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1000Base-SX has a maximum throughput of ____.
a. | 1 Gbps | c. | 100 Gbps | b. | 10 Gbps | d. | 1000 Gbps |
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21.
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The 10-gigabit fiber optic standard with the shortest segment length is
____.
a. | 10GBase-T | c. | 10GBase-LR | b. | 10GBase-SR | d. | 10GBase-ER |
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22.
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In the 10GBase-LR standard, the L stands for ____.
a. | long reach | c. | long ring | b. | LAN | d. | little ring |
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23.
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Given their long-distance capabilities, 10GBase-ER and 10GBase-EW are best
suited for use on ____.
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24.
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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 | c. | preamble | b. | header | d. | frame |
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25.
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The data portion of an Ethernet frame may contain ____ bytes of
information.
a. | 46 | c. | 1500 | b. | 46 to 1500 | d. | more than 1500 |
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26.
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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 | c. | source | b. | length | d. | type |
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