Download CCNA3 3.0-04 Questions Review of Switching

Cisco 3 – Switching Concepts
Module 4
The use of bridges and switches for segmentation results in ____?
Perrine. J
1.
Multiple broadcast domains
2.
Single collision domains
3.
A large over all network
4.
Multiple collision domains
5/25/2017
Page 1
Cisco 3 – Switching Concepts
Module 4
The use of bridges and switches for segmentation results in ____?
Perrine. J
1.
Multiple broadcast domains
2.
Single collision domains
3.
A large over all network
4.
Multiple collision domains
5/25/2017
Page 2
Cisco 3 – Switching Concepts
Module 4
After a collision occurs on a half-duplex Ethernet network, how does a
transmitting host proceed? (Choose two.)
Perrine. J
1.
It does not stop transmitting.
2.
It listens to determine if the network is in use before attempting to
retransmit.
3.
It resumes transmitting while the jam signal clears the wire.
4.
It resumes transmitting based on the NIC back-off algorithm.
5.
It will take priority and be the first host to transmit after the collision
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Cisco 3 – Switching Concepts
Module 4
After a collision occurs on a half-duplex Ethernet network, how does a
transmitting host proceed? (Choose two.)
Perrine. J
1.
It does not stop transmitting.
2.
It listens to determine if the network is in use before attempting to
retransmit.
3.
It resumes transmitting while the jam signal clears the wire.
4.
It resumes transmitting based on the NIC back-off algorithm.
5.
It will take priority and be the first host to transmit after the collision
5/25/2017
Page 4
Cisco 3 – Switching Concepts
Module 4
What is designed to prevent multiple devices on an Ethernet network from
transmitting at the same time?
Perrine. J
1.
synchronization clock
2.
CSMA/CD access method
3.
token access method
4.
shared medium
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Cisco 3 – Switching Concepts
Module 4
What is designed to prevent multiple devices on an Ethernet network from
transmitting at the same time?
Perrine. J
1.
synchronization clock
2.
CSMA/CD access method
3.
token access method
4.
shared medium
5/25/2017
Page 6
Cisco 3 – Switching Concepts
Module 4
Which of the following are benefits of implementing Layer 3 devices in your LAN?
1.
It allows segmentation of the LAN into unique physical and logical
networks.
2.
It filters data-link broadcasts and multicasts and allows for WAN
connectivity.
3.
It provides logical structure to the network.
4.
All of the above
Perrine. J
5/25/2017
Page 7
Cisco 3 – Switching Concepts
Module 4
Which of the following are benefits of implementing Layer 3 devices in your LAN?
1.
It allows segmentation of the LAN into unique physical and logical
networks.
2.
It filters data-link broadcasts and multicasts and allows for WAN
connectivity.
3.
It provides logical structure to the network.
4.
All of the above
Perrine. J
5/25/2017
Page 8
Cisco 3 – Switching Concepts
Module 4
LAN switches are considered to be which of the following?
Perrine. J
1.
Multiport repeaters operating at layer 1
2.
Multiport hubs operating at layer 2
3.
Multiport routers operating at layer 3
4.
Multiport bridges operating at layer 2
5/25/2017
Page 9
Cisco 3 – Switching Concepts
Module 4
LAN switches are considered to be which of the following?
Perrine. J
1.
Multiport repeaters operating at layer 1
2.
Multiport hubs operating at layer 2
3.
Multiport routers operating at layer 3
4.
Multiport bridges operating at layer 2
5/25/2017
Page 10
Cisco 3 – Switching Concepts
Module 4
Which switching mode changes to store-and-forward mode after it detects a given
number of errors?
Perrine. J
1.
cut-through
2.
adaptive fast-forward
3.
fragment-free
4.
adaptive cut-through
5/25/2017
Page 11
Cisco 3 – Switching Concepts
Module 4
Which switching mode changes to store-and-forward mode after it detects a given
number of errors?
Perrine. J
1.
cut-through
2.
adaptive fast-forward
3.
fragment-free
4.
adaptive cut-through
5/25/2017
Page 12
Cisco 3 – Switching Concepts
Module 4
In ____ switching, the switch checks the destination address and immediately
begins forwarding the frame, and in ____ switching, the switch receives the
complete frame before forwarding it.
Perrine. J
1.
Store-and-forward, symmetric
2.
Cut-through, store-and-forward
3.
Store-and-forward, cut-through
4.
Memory buffering, cut-through
5/25/2017
Page 13
Cisco 3 – Switching Concepts
Module 4
In ____ switching, the switch checks the destination address and immediately
begins forwarding the frame, and in ____ switching, the switch receives the
complete frame before forwarding it.
Perrine. J
1.
Store-and-forward, symmetric
2.
Cut-through, store-and-forward
3.
Store-and-forward, cut-through
4.
Memory buffering, cut-through
5/25/2017
Page 14
Cisco 3 – Switching Concepts
Module 4
Which of the following is used to build a switching table?
Perrine. J
1.
source IP addresses
2.
destination IP addresses
3.
destination MAC addresses
4.
source MAC addresses
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Cisco 3 – Switching Concepts
Module 4
Which of the following is used to build a switching table?
Perrine. J
1.
source IP addresses
2.
destination IP addresses
3.
destination MAC addresses
4.
source MAC addresses
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Cisco 3 – Switching Concepts
Module 4
How does an Ethernet bridge handle an incoming frame? (Choose three.)
1.
The source MAC address and input interface pair are added to the
bridging table.
2.
The destination MAC address and input interface pair are added to the
bridging table.
3.
If no match to the destination MAC address is found in the bridging table,
the frame is discarded.
4.
If no match to the destination MAC address is found in the bridging table,
the frame is flooded out all other interfaces.
5.
If a match to the destination MAC address is found in the bridging table,
the frame is forwarded out the associated interface.
6.
If a match to the source MAC address is found in the bridging table, the
frame is forwarded to all ports.
Perrine. J
5/25/2017
Page 17
Cisco 3 – Switching Concepts
Module 4
How does an Ethernet bridge handle an incoming frame? (Choose three.)
1.
The source MAC address and input interface pair are added to the
bridging table.
2.
The destination MAC address and input interface pair are added to the
bridging table.
3.
If no match to the destination MAC address is found in the bridging table,
the frame is discarded.
4.
If no match to the destination MAC address is found in the bridging
table, the frame is flooded out all other interfaces.
5.
If a match to the destination MAC address is found in the bridging
table, the frame is forwarded out the associated interface.
6.
If a match to the source MAC address is found in the bridging table, the
frame is forwarded to all ports.
Perrine. J
5/25/2017
Page 18
Cisco 3 – Switching Concepts
Module 4
A bandwidth domain or collision domain is everything associated with a port on
what device?
Perrine. J
1.
Repeater
2.
Switch
3.
Active hub
4.
Passive hub
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Cisco 3 – Switching Concepts
Module 4
A bandwidth domain or collision domain is everything associated with a port on
what device?
Perrine. J
1.
Repeater
2.
Switch
3.
Active hub
4.
Passive hub
5/25/2017
Page 20
Cisco 3 – Switching Concepts
Module 4
Which form of buffering is used by bridges?
Perrine. J
1.
cut-through
2.
fragment-free
3.
fast-forward
4.
store-and-forward
5/25/2017
Page 21
Cisco 3 – Switching Concepts
Module 4
Which form of buffering is used by bridges?
Perrine. J
1.
cut-through
2.
fragment-free
3.
fast-forward
4.
store-and-forward
5/25/2017
Page 22
Cisco 3 – Switching Concepts
Module 4
Switching may be implemented to improve the performance of which of the
following networking technologies? (Choose three.)
Perrine. J
1.
Ethernet 10BASE-T
2.
Ethernet 10BASE2
3.
FDDI
4.
Token Ring
5.
EIA-232
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Cisco 3 – Switching Concepts
Module 4
Switching may be implemented to improve the performance of which of the
following networking technologies? (Choose three.)
Perrine. J
1.
Ethernet 10BASE-T
2.
Ethernet 10BASE2
3.
FDDI
4.
Token Ring
5.
EIA-232
5/25/2017
Page 24
Cisco 3 – Switching Concepts
Module 4
Which of the following specifications for 10BASE-T is wrong?
Perrine. J
1.
Data rate is 10 Mbps
2.
Maximum length is 400 meters
3.
Signaling method is baseband
4.
Media is category 5 UTP
5/25/2017
Page 25
Cisco 3 – Switching Concepts
Module 4
Which of the following specifications for 10BASE-T is wrong?
Perrine. J
1.
Data rate is 10 Mbps
2.
Maximum length is 400 meters
3.
Signaling method is baseband
4.
Media is category 5 UTP
5/25/2017
Page 26
Cisco 3 – Switching Concepts
Module 4
Which statements are true concerning the shared memory buffering used by an
Ethernet switch? (Choose two.)
Perrine. J
1.
Frames are processed through a single queue.
2.
All frames are placed in a common memory buffer.
3.
Frames are placed in a queue for the destination port.
4.
A port with a full memory buffer can cause frames for available ports to
be delayed.
5.
Each switch port is statically assigned a buffer of equal size.
5/25/2017
Page 27
Cisco 3 – Switching Concepts
Module 4
Which statements are true concerning the shared memory buffering used by an
Ethernet switch? (Choose two.)
Perrine. J
1.
Frames are processed through a single queue.
2.
All frames are placed in a common memory buffer.
3.
Frames are placed in a queue for the destination port.
4.
A port with a full memory buffer can cause frames for available ports to
be delayed.
5.
Each switch port is statically assigned a buffer of equal size.
5/25/2017
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