CCNP SWITCH EXAM QUESTIONS
AND CORRECT ANSWERS
A network engineer notices inconsistent Cisco Discovery Protocol neighbors according
to the diagram that is provided. The engineer notices only a single neighbor that uses
Cisco Discovery Protocol, but it has several routing neighbor relationships. What would
cause the output to show only the single neighbor? - Answer-The routers are connected
via a Layer 2 switch.
After the implementation of several different types of switches from different vendors, a
network engineer notices that directly connected devices that use Cisco Discovery
Protocol are not visible. Which vendor-neutral protocol could be used to resolve this
issue? - Answer-Link Layer Discovery Protocol
Several new switches have been added to the existing network as VTP clients. All of the
new switches have been configured with the same VTP domain, password, and version.
However, VLANs are not passing from the VTP server (existing network) to the VTP
clients. What must be done to fix this? - Answer-Ensure that all switch interconnects are
configured as trunks to allow VTP information to be transferred.
After implementing VTP, the extended VLANs are not being propagated to other VTP
switches. What should be configured for extended VLANs? - Answer-Enable VTP
version 3, which supports extended VLAN propagation.
A network engineer changes the default native VLAN to VLAN 999. After applying the
settings on the uplinks to the core switches, the switch control traffic, such as CDP and
VTP, is no longer working. The standard configuration is used for each uplink. What is
wrong with the configuration? - Answer-The native VLAN is not present on the trunk.
Which two options are two results of using the command spanning-tree vlan 50 root
primary within a spanning-tree network under global configuration? (Choose two.) -
Answer-Spanning tree determines the priority of the current root for VLAN 50 and
reduces the priority of the local switch to a lower value.
All ports that are configured on the current switch with VLAN 50 transition to designated
ports.
,An access switch at a remote location is connected to the spanning-tree root with
redundant uplinks. A network engineer notices that there are issues with the physical
cabling of the current root port. The engineer decides to force the secondary link to be
the desired forwarding root port.
Which action accomplishes this task? - Answer-Adjust the secondary link to have a
lower priority than the primary link.
A network engineer wants to make sure that an access switch will never become a
Spanning Tree root for VLAN 5. What action will accomplish this task? - Answer-adjust
STP priority to the maximum value
Which gateway role is responsible for answering ARP requests for the virtual IP address
in GLBP? - Answer-active virtual gateway
What is the maximum number of switches that can be stacked using Cisco StackWise?
- Answer-9
A network engineer wants to add a new switch to an existing switch stack. Which
configuration must be added to the new switch before it can be added to the switch
stack? - Answer-No configuration must be added.
What percentage of bandwidth is reduced when a stack cable is broken? - Answer-50%
Question 4
Which set of configurations will result in all ports on both switches successfully bundling
into an EtherChannel? - Answer-Switch1
channel-group 1 mode desirable
switch2
channel-group 1 mode auto
Question 5
How can the traffic that is mirrored out the GigabitEthernet0/48 port be limited to only
traffic that is received or transmitted in VLAN 10 on the GigabitEthernet0/1 port? -
Answer-Apply the monitor session filter globally to allow only traffic from VLAN 10.
Question 6
A network engineer wants to analyze all incoming and outgoing packets for an interface
that is connected to an access switch. Which three items must be configured to mirror
traffic to a packet sniffer that is connected to the distribution switch? (Choose three.) -
Answer-B. A remote SPAN VLAN on the distribution and access layer switch
C. A monitor session on the access switch with a physical interface source and the
remote SPAN VLAN as the destination
D. A monitor session on the distribution switch with a remote SPAN VLAN as the source
and physical interface as the destination
, After an EtherChannel is configured between two Cisco switches, interface port channel
1 is in the down/down state. Switch A is configured with channel-group 1 mode active,
while Switch B is configured with channel-group 1 mode desirable. Why is the
EtherChannel bundle not working? - Answer-The switches are using mismatched
EtherChannel negotiation modes.
An EtherChannel bundle has been established between a Cisco switch and a corporate
web server. The network administrator noticed that only one of the EtherChannel links is
being utilized to reach the web server. What should be done on the Cisco switch to
allow for better EtherChannel utilization to the corporate web server? - Answer-Adjust
the EtherChannel load-balancing method based on source IP addresses.
Interface FastEthernet0/1 is configured as a trunk interface that allows all VLANs. This
command is configured globally:
monitor session 2 filter vlan 1 - 8, 39, 52
What is the result of the implemented command? - Answer-Traffic from VLANs 1 to 8,
39, and 52 is replicated to the SPAN destination port.
Question 14.
Switch A, B, and C are trunked together and have been properly configured for VTP.
Switch C receives VLAN information from the VTP server Switch A, but Switch B does
not receive any VLAN information. What is the most probable cause of this behavior? -
Answer-Switch B is configured in transparent mode.
Question 15
Switch A, B, and C are trunked together and have been properly configured for VTP.
Switch B has all VLANs, but Switch C is not receiving traffic from certain VLANs. What
would cause this issue? - Answer-VTP pruning is configured globally on all switches
and it removed VLANs from the trunk interface that is connected to Switch C.
After the recent upgrade of the switching infrastructure, the network engineer notices
that the port roles that were once "blocking" are now defined as "alternate" and
"backup." What is the reason for this change? - Answer-The new switches are using
RSTP instead of legacy IEEE 802.1D STP.
An administrator recently configured all ports for rapid transition using PortFast. After
testing, it has been determined that several ports are not transitioning as they should.
What is the reason for this? - Answer-STP is unable to achieve rapid transition for trunk
links.
Which technique automatically limits VLAN traffic to only the switches that require it? -
Answer-VTP pruning
What effect does the mac address-table aging-time 180 command have on the MAC
address- table? - Answer-This is how long a dynamic MAC address will remain in the
CAM table.
AND CORRECT ANSWERS
A network engineer notices inconsistent Cisco Discovery Protocol neighbors according
to the diagram that is provided. The engineer notices only a single neighbor that uses
Cisco Discovery Protocol, but it has several routing neighbor relationships. What would
cause the output to show only the single neighbor? - Answer-The routers are connected
via a Layer 2 switch.
After the implementation of several different types of switches from different vendors, a
network engineer notices that directly connected devices that use Cisco Discovery
Protocol are not visible. Which vendor-neutral protocol could be used to resolve this
issue? - Answer-Link Layer Discovery Protocol
Several new switches have been added to the existing network as VTP clients. All of the
new switches have been configured with the same VTP domain, password, and version.
However, VLANs are not passing from the VTP server (existing network) to the VTP
clients. What must be done to fix this? - Answer-Ensure that all switch interconnects are
configured as trunks to allow VTP information to be transferred.
After implementing VTP, the extended VLANs are not being propagated to other VTP
switches. What should be configured for extended VLANs? - Answer-Enable VTP
version 3, which supports extended VLAN propagation.
A network engineer changes the default native VLAN to VLAN 999. After applying the
settings on the uplinks to the core switches, the switch control traffic, such as CDP and
VTP, is no longer working. The standard configuration is used for each uplink. What is
wrong with the configuration? - Answer-The native VLAN is not present on the trunk.
Which two options are two results of using the command spanning-tree vlan 50 root
primary within a spanning-tree network under global configuration? (Choose two.) -
Answer-Spanning tree determines the priority of the current root for VLAN 50 and
reduces the priority of the local switch to a lower value.
All ports that are configured on the current switch with VLAN 50 transition to designated
ports.
,An access switch at a remote location is connected to the spanning-tree root with
redundant uplinks. A network engineer notices that there are issues with the physical
cabling of the current root port. The engineer decides to force the secondary link to be
the desired forwarding root port.
Which action accomplishes this task? - Answer-Adjust the secondary link to have a
lower priority than the primary link.
A network engineer wants to make sure that an access switch will never become a
Spanning Tree root for VLAN 5. What action will accomplish this task? - Answer-adjust
STP priority to the maximum value
Which gateway role is responsible for answering ARP requests for the virtual IP address
in GLBP? - Answer-active virtual gateway
What is the maximum number of switches that can be stacked using Cisco StackWise?
- Answer-9
A network engineer wants to add a new switch to an existing switch stack. Which
configuration must be added to the new switch before it can be added to the switch
stack? - Answer-No configuration must be added.
What percentage of bandwidth is reduced when a stack cable is broken? - Answer-50%
Question 4
Which set of configurations will result in all ports on both switches successfully bundling
into an EtherChannel? - Answer-Switch1
channel-group 1 mode desirable
switch2
channel-group 1 mode auto
Question 5
How can the traffic that is mirrored out the GigabitEthernet0/48 port be limited to only
traffic that is received or transmitted in VLAN 10 on the GigabitEthernet0/1 port? -
Answer-Apply the monitor session filter globally to allow only traffic from VLAN 10.
Question 6
A network engineer wants to analyze all incoming and outgoing packets for an interface
that is connected to an access switch. Which three items must be configured to mirror
traffic to a packet sniffer that is connected to the distribution switch? (Choose three.) -
Answer-B. A remote SPAN VLAN on the distribution and access layer switch
C. A monitor session on the access switch with a physical interface source and the
remote SPAN VLAN as the destination
D. A monitor session on the distribution switch with a remote SPAN VLAN as the source
and physical interface as the destination
, After an EtherChannel is configured between two Cisco switches, interface port channel
1 is in the down/down state. Switch A is configured with channel-group 1 mode active,
while Switch B is configured with channel-group 1 mode desirable. Why is the
EtherChannel bundle not working? - Answer-The switches are using mismatched
EtherChannel negotiation modes.
An EtherChannel bundle has been established between a Cisco switch and a corporate
web server. The network administrator noticed that only one of the EtherChannel links is
being utilized to reach the web server. What should be done on the Cisco switch to
allow for better EtherChannel utilization to the corporate web server? - Answer-Adjust
the EtherChannel load-balancing method based on source IP addresses.
Interface FastEthernet0/1 is configured as a trunk interface that allows all VLANs. This
command is configured globally:
monitor session 2 filter vlan 1 - 8, 39, 52
What is the result of the implemented command? - Answer-Traffic from VLANs 1 to 8,
39, and 52 is replicated to the SPAN destination port.
Question 14.
Switch A, B, and C are trunked together and have been properly configured for VTP.
Switch C receives VLAN information from the VTP server Switch A, but Switch B does
not receive any VLAN information. What is the most probable cause of this behavior? -
Answer-Switch B is configured in transparent mode.
Question 15
Switch A, B, and C are trunked together and have been properly configured for VTP.
Switch B has all VLANs, but Switch C is not receiving traffic from certain VLANs. What
would cause this issue? - Answer-VTP pruning is configured globally on all switches
and it removed VLANs from the trunk interface that is connected to Switch C.
After the recent upgrade of the switching infrastructure, the network engineer notices
that the port roles that were once "blocking" are now defined as "alternate" and
"backup." What is the reason for this change? - Answer-The new switches are using
RSTP instead of legacy IEEE 802.1D STP.
An administrator recently configured all ports for rapid transition using PortFast. After
testing, it has been determined that several ports are not transitioning as they should.
What is the reason for this? - Answer-STP is unable to achieve rapid transition for trunk
links.
Which technique automatically limits VLAN traffic to only the switches that require it? -
Answer-VTP pruning
What effect does the mac address-table aging-time 180 command have on the MAC
address- table? - Answer-This is how long a dynamic MAC address will remain in the
CAM table.
