Jeff Rodgers
Module 6 TEST Q/A
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A network
administrator, while analyzing the network, notices a large number of
"runts". What is significant about this? (Choose two.) |
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A server with
high network priority is receiving significant use, overriding normal packet
delivery. |
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A significant
number of collisions are occurring, leaving collision fragments. |
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Corrupt data
has been split into small packets allowing the network to function more
smoothly. |
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The network is
operating smoothly allowing data to be sent in smaller increments. |
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Throughput on
the network is significantly reduced due to excessive collisions. |
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What are the
possible reasons the MAC layer would be unable to send a frame in sixteen
attempts? (Choose two.) |
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The
destination is more than 16 hops away and unreachable. |
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A physical
problem exists on the network. |
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The
destination never received a token and therefore could not return
verification of the CRC. |
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The network
administrator assigned the wrong MAC address to the device. |
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The network is
experiencing extremely heavy traffic loads. |
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The physical
layer has not yet reached a state of convergence. |
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Which
statements correctly describe slot time? (Choose two.) |
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the time
period just longer than the longest possible round trip when all options are
at their maximum |
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the time
required to send an entire frame through the outgoing port |
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the minimum
spacing between two non-colliding frames |
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undefined on
10 Gigabit Ethernet |
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What happens
on an Ethernet network after a collision occurs? (Choose three.) |
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A backoff
algorithm is invoked and transmission is stopped. |
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Devices
involved in the collision have a random period of time for priority
retransmission of the damaged packet. |
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The devices
involved in the collision release a token indicating the time each station
may begin retransmitting. |
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The devices
involved in the collision do not have priority to transmit data. |
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The devices
with data to transmit return to a listen-before-transmit mode. |
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Transmit work
will restart with the reissuance of all data. |
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Which of the
following are the functions of CSMA/CD? (Choose three.) |
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transmitting
and receiving data packets |
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releasing a
token when the network is clear |
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detecting
errors within data packets or on the network |
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passing a
token to each station on the network |
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decoding data
packets and checking them for valid addresses before passing them to the
upper layers of the OSI model |
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Which features
describe the Token Ring topology? (Choose two.) |
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collisionless
environment. |
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non-deterministic. |
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deterministic |
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uses CSMA/CD |
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prone to
collisions |
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Select the
statements that correctly describe the Length and Type Ethernet
frame fields. (Choose three.) |
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Both fields, Length
and Type, exist in all versions of Ethernet frames. |
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DIX versions
of Ethernet use the field Type. |
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Early IEEE
Ethernet versions used a combined Length/Type field. |
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Early IEEE
Ethernet versions used the field Length. |
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Later IEEE
Ethernet versions use a combined Length/Type field. |
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Later IEEE
Ethernet versions use separate Length and Type fields. |
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Which of the
following is included in the frame address field? (Choose two.) |
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source IP
address |
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destination IP
address |
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destination
subnet mask |
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source MAC
address |
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destination
MAC address |
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Which options
below are field names of a generic frame? (Choose three.) |
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IP header |
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voltage
reference |
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data |
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description |
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length |
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frame check
sequence |
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Which of the
following are sublayers of the OSI data link layer? (Choose two.) |
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Logical Link
Control |
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Logical Layer
Control |
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Media Access
Control |
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Logical Link Communication |
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Media Access
Communication |
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Physical
Access Communication |
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Ethernet
standard specifications limit network service interruption. Select the items
that describe the standards. (Choose three.) |
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minimum
segment length |
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maximum
segment length |
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minimum number
of stations per segment |
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maximum number
of stations per segment |
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minimum number
of repeaters between segments |
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maximum number
of repeaters between segments |
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Which
characteristics of Ethernet contribute to its widespread use? (Choose three.) |
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ease of
maintenance |
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collision free
technology |
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scalability |
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low cost of
installation |
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compatibility
with 802.5 standard |
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collision
avoidance capabilities |
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Which
statements below are true about Ethernet? (Choose three.) |
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addresses the
needs of Layer 2 and Layer 3 of the OSI model |
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first released
as a Xerox proprietary standard |
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essentially
the same as 802.3 standards |
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bandwidth can
be increased without changing the underlying technology |
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essentially
the same as 802.2 standards |
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original idea
developed at the University of Hawaii |
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How are
collisions detected on an Ethernet network? |
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Stations
identify the altered FCS field on the colliding packets. |
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The signal
amplitude on the networking media increases. |
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There is
blockage on the network causing no traffic to be detected. |
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The signal
amplitude on the networking media decreases. |
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What is
indicated when the length/type frame field value is greater than 0x600? |
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DIX formatted
frame header |
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Ethernet II
code used to interpret the frame |
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length of
frame is 600 bits |
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half duplex
transmission being utilized |
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Why is
Ethernet considered very scalable? |
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The NIC cards
do not need to be changed to increase the bandwidth of the network. |
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Bandwidth can
be increased without changing the underlying technology. |
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Ethernet
standards do not need to change as new technologies are introduced. |
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Ethernet
changes the packet as necessary to move from one link to another. |
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What does the
"10" in 10Base2 indicate about this version of Ethernet? |
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The version
uses Base10 numbering within the frames. |
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The version
operates at a transmission rate of 10 Mbps. |
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Frames can
travel 10 meters unrepeated. |
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The maximum
frame length is 10 octets. |
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What does the
word "Base" indicate in 10Base2? |
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The number
standard used. |
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Baseband
signaling is used. |
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Only a portion
of the transmission medium is used. |
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Broadband
signaling is used. |
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What does the
letter "T" indicate in 10BaseT? |
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fiber optic
cable |
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copper unshielded
twisted pair |
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thicknet
coaxial cable |
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thinnet
coaxial cable |
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Which Ethernet
data link layer frame comparison is correct? |
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higher speed
networks require more fields be included in the frame |
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the faster
speed frame structures are incompatible with the slower speed networks |
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the frame
structure changes with each higher speed, however, they are compatible with
slower speeds |
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all speeds of
Ethernet have nearly identical frame structures |
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Which of the
following would indicate the beginning of the frame? |
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flag bit |
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start of frame |
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frame check
sequence |
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address field |
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Where does the
MAC address originate? |
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DHCP server
database |
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configured by
the administrator |
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burned into
ROM on the NIC card |
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network
configuration on the computer |
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included in
the creation of the processor chip |
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What is the
length of a MAC address? |
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8 bits |
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8 bytes |
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24 bits |
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24 bytes |
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48 bits |
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48 bytes |
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How is a MAC
address represented? |
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four groups of
eight binary digits separated by a decimal point |
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four Base10
digits separated by a decimal point |
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six
hexadecimal digits |
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twelve
hexadecimal digits |
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twenty-four
Base10 digits |
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Why is
half-duplex mode not permitted on 10 Gigabit Ethernet? |
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It was removed
from the Ethernet standards as outdated technology. |
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Transmission
is completed before the sending station can be made aware of any collisions. |
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Full-duplex
transmission is needed in order to reach 10 Gigabit speeds. |
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Full-duplex
stations transmit too quickly, blocking half-duplex stations from sending
data. |
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