Pregunta 1
Pregunta
What is the function of NSF?
Respuesta
-
Provide non-stop forwarding in the event of failure of one of the member supervisors
-
Provide automatic failover to back up supervisor in VSS mode
-
Forward traffic based on CEF
-
Forward traffic simultaneously using both supervisors
Pregunta 2
Pregunta
A network engineer configured a fault-tolerant link on Gigabit Ethernet links G0/1, G0/2, GG0/3 and G0/4 between two switches using ethernet port-channel. Which action allows interface G0/1 to always actively forward traffic in the port-channel?
Respuesta
-
Configure G0/1 as half duplex and G0/2 and full duplex
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Configure LACP port-priority on G0/1 to 1
-
Configure LACP port-priority on G0/1 to 65535
-
LACP traffic goes through G0/4 because it is the highest interface ID
Pregunta 3
Pregunta
An access switch has been configured with an EtherChannel port. After configuring SPAN to monitor this port, the network administrator notices that not all traffic is being replicated to the management server. What is a cause for this issue?
Respuesta
-
SPAN encapsulation replication must be enabled to capture EtherChannel destinations traffic.
-
The port channel can be used as a SPAN source but not a destination
-
VLAN filters are required to ensure traffic mirrors effectively
-
RSPAN must be used to capture EtherChannel bidirectional traffic.
Pregunta 4
Pregunta
A network engineer investigates a recent network failure and notices that one of the interfaces on the switch is still down. What is causing the line protocol on this interface to be shown as down?
Respuesta
-
There is a duplex mismatch on the interface
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The interface is configured as the target of the SPAN session
-
There is a speed mismatch on the interface
-
The interface is configured as the source of the SPAN session
-
There is a layer 1 physical issue
Pregunta 5
Pregunta
Which option is valid for EtherChannel load balancing?
Respuesta
-
source MAC address and source IP address
-
destination MAC address and destination IP address
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source MAC address and destination IP address
-
source MAC address and destination MAC address
Pregunta 6
Pregunta
Which two statements correctly indicate when an SNMP trap is set to the switch?
switch(config)#snamp-server enable traps mac-notification
switch(config)#mac address-table notification threshold
switch(config)#mac address-table notification threshold limit 60
switch(config)#mac address-table notification mac-move
Respuesta
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When 61 percent of the address table capacity is used
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When the switch loses power and reboots
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When the phone previously on Fa0/2 is now connected to Fa0/5
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When 61 MAC addresses are in the switch
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When a new workstation connects to port F0/1
Pregunta 7
Pregunta
Which command correctly configures standby tracking for group 1 using the default decrement priority value?
Respuesta
-
standby 1 track 100 decrement 1
-
standby 1 track 100 decrement 20
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standby 1 track 100
-
standby 1 track 100 decrement 5
Pregunta 8
Pregunta
Which two protocols can be automatically negotiated between switches for trunking
Respuesta
-
dot1Q
-
HDLC
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PPP
-
DLCI
-
ISL
-
DTP
Pregunta 9
Pregunta
Which two statements about HSRP, GLBP and VRRP are true?
Respuesta
-
VRRP has one master router, one standby router and many listening routers
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GLBP allows for a maximum of four MAC addresses per group
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HSRP supports up to 255 groups on the same switch or router
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HSRP is the preferred protocol to be used on multi-vendor environments
-
VRRP is a Cisco proprietary protocol
Pregunta 10
Pregunta
A manager tells the network engineer to permit only certain VLANs across a specific trunk interface. Which option can be configured to accomplish this?
Respuesta
-
allow VLAN list
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VACL
-
VTP Pruning
-
L2P tunneling
Pregunta 11
Pregunta
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
Respuesta
-
All ports that are configured on the current switch with VLAN 50 transition to designated ports.
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The spanning-tree timers are reduced to improve the convergence time for VLAN 50.
-
The switchport that is configured for VLAN 50 is the primary connection to the spanning-tree root switch.
-
The priority value for VLAN 50 is set to 4094 on the root while the local switch priority is set to 32768
-
Spanning tree determines the priority of the current root for VLAN 50 and reduces the priority of the local switch to a lower value.
Pregunta 12
Pregunta
To follow the layer 2 switching guidelines a network engineer decides to create a separate spanning tree for every group of 10 VLANs. Which version of spanning tree is appropriate to meet the company policy.
Respuesta
-
PVST+
-
STP
-
RPVST+
-
RSTP
-
MST
Pregunta 13
Pregunta
Which login credentials are required when connecting to the console port in this output?
Respuesta
-
No username with password linepass
-
username cisco password cisco
-
login authentication default
-
none required
Pregunta 14
Pregunta
After the implementation of several different types of switches for different vendors, a network engineer notices that directly connected devices that use CDP are not visible. Which vendor-neutral protocol could be used to resolve this issue?
Pregunta 15
Pregunta
Which statement about using EtherChannel on Cisco IOS switches is true?
Respuesta
-
A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for fast EtherChannel or 8 Gbps only for Gigabit EtherChannel.
-
A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 8 Gbps only for Gigabit EtherChannel.
-
A switch can support up to eight compatibly configured Ethernet interfaces in an EtherChannel. The EtherChannel provides full-duplex bandwidth up to 800 Mbps only for fast EtherChannel or 16 Gbps only for Gigabit EtherChannel.
-
A switch can support up to 10 compatibly configured Ethernet interfaces in an EtherChannel. The EtherChannel provides full-duplex bandwidth up to 1000 Mbps only for Fast EtherChannel or 10 Gbps only for Gigabit EtherChannel.
Pregunta 16
Pregunta
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?
Respuesta
-
Adjust the EtherChannel load-balancing method based on destination IP addresses.
-
Enable CEF to allow for more effective traffic sharing over the EtherChannel bundle.
-
Disable spanning tree on all interfaces that are participating in the EtherChannel bundle.
-
Use link-state tracking to allow for improved load balancing of traffic upon link failure to the server.
-
Adjust the EtherChannel load-balancing method based on source IP addresses.
Pregunta 17
Pregunta
In which portion of the frame is the 802.1q header found?
Respuesta
-
Within the Ethernet header
-
Within the Ethernet payload
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Within the Ethernet FCS
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Within the Ethernet source MAC address
Pregunta 18
Pregunta
Which AAA Authorization type includes PPP, SLIP and ARAP connections?
Respuesta
-
auth-proxy
-
network
-
IP mobile
-
EXEC
Pregunta 19
Pregunta
A multilayer switch has been configured to send and receive encapsulated and tagged frames. VLAN 2013 on the multilayer switch is configured as the native VLAN. Which option is the cause of the spanning-tree error.
Respuesta
-
VLAN spanning-tree in SW-2 is configured
-
Spanning-tree bpdu-filter is enabled
-
802.1q trunks are on both sides, both with native VLAN mismatch
-
VLAN ID 1 should not be used for management traffic because its unsafe.
Pregunta 20
Pregunta
Which two options are advantages of deploying VTPv3?
Respuesta
-
It supports the propagation of private VLANs
-
It can be configured to allow only one VTP server to make changes to the VTP domain
-
It adds an FCS field at the end of each VTP frame for consistency checking
-
It stores the VTP domain password securely as an SHA-1 hash
-
It supports the use of AES encrypt VTP messaging
Pregunta 21
Pregunta
Which switch feature determines validity based on IP-to-MAC address bindings that are stored in a trusted database?
Respuesta
-
VTP pruning
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Dynamic ARP Inspection
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DHCP Snooping
-
Storm Control
Pregunta 22
Pregunta
A network engineer wants to ensure layer 2 isolation of customer traffic using a private VLAN. Which configuration must be made before the private VLAN is configured?
Respuesta
-
Disable VTP and manually assign VLANs
-
Configure VTP Transparent Mode
-
Ensure all switches are configured as VTP server mode
-
Enable VTP version 3
Pregunta 23
Pregunta
A network engineer configured an Ethernet switch using these commands
switch(config)# spanning-tree portfast bpdufilter default
What statement about the spanning-tree portfast feature on the switch is true?
Respuesta
-
If an interface is enabled for portfast receives BPDU the port goes through the spanning-tree listening, learning, and forwarding states.
-
If an interface is enabled for portfast received BPDU the port does not go through the spanning-tree listening, learning and forwarding states.
-
If an interface is enabled for portfast receives BPDU the port is shut down immediatly
-
If an interface is enabled for portfast receives BPDU the port goes into the spanning-tree inconsistent state.
Pregunta 24
Pregunta
Which two statements about SW1 are true?
Respuesta
-
Interface Gi5/1 is using an industry standard trunking protocol
-
The device is configured with the default MST region
-
On interface Gi6/2 all untagged traffic is tagged with VLAN 600
-
Interface G16/2 is the root port for VLAN 30
-
On interface Gi5/1, all untagged traffic is tagged with VLAN 133
-
Interface Gi5/1 is using a Cisco proprietary trunking protocol
Pregunta 25
Pregunta
The network switches for two companies have been connected and manually configured for the required VLANs but the users in company A are not able to access network resources in company B when DTP is enabled. Which action resolves this problem?
Respuesta
-
Delete vlan.dat and ensure that the switch with the lowest MAC address is the VTP server
-
Disable DTP and document the VTP domain mismatch
-
Manually force trunking with switchport mode trunk on both switches
-
Enable the company B switch with the vtp mode server command.
Pregunta 26
Pregunta
Which option is a benefit of using VSS?
Pregunta 27
Pregunta
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.
Respuesta
-
Ensure that all switch interconnects are configured as trunks to allow VTP information to be transferred.
-
Configure a different native VLAN on all new switches that are configured as VTP clients
-
Remove the VTP domain name for all switches with "null" and then replace it with the new domain name.
-
Provision one of the new switches to be the VTP server and duplicate information from the existing network.
Pregunta 28
Pregunta
Which statement is correct about 802.1q trunking?
Respuesta
-
In 802.1q trunking all VLAN packets are tagged on the trunk link, except the native VLAN
-
The native VLAN on both ends of the trunk must be VLAN 1
-
The encapsulation type of both ends of the trunk does not have to match
-
802.1q trunking can only be configured on a Layer 2 port
-
Both switches must be in the same VTP domain
Pregunta 29
Pregunta
Which option is the minimum number of bindings that the DHCP snooping database can store?
Respuesta
-
5000 bindings
-
2000 bindings
-
1000 bindings
-
8000 bindings
Pregunta 30
Pregunta
Which statement about the current configuration on port Gigabit Ethernet 2/0/1 is true?
Respuesta
-
It is an access port in VLAN 700
-
It is an access port configured for a phone and a PC
-
It is a trunk port and the native VLAN is VLAN 700
-
It is a trunk port and the native VLAN is VLAN 1
Pregunta 31
Pregunta
A Cisco Catalyst switch that is prone to reboots continues to rebuild the DHCP snooping database. What is the solution to avoid the snooping database from being rebuilt after every device reboot?
Respuesta
-
Disable option 82 for DHCP data insertion
-
Enable DHCP snooping for all VLANs that are associated with the switch
-
A DHCP snooping database agent should be configured
-
Use IP Source Guard to protect the DHCP binding table entries from being lost upon rebooting.
-
Apply ip dhcp snooping trust on all interfaces with dynamic addresses
Pregunta 32
Pregunta
Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or broadcast traffic?
Respuesta
-
VTP pruning
-
Port Security
-
VLAN trunking
-
Storm control
Pregunta 33
Pregunta
During routine maintenance, GigabitEthernet1/0/1 on DSW1 was shut down. All other interfaces were up. DSW2 became the active HSRP device for VLAN 101 as desired. However, after GigabitEthernet1/0/1 on DSW1 was reactivated, DSW1 did not become the active router for VLAN 101 as desired. What needs to be done to make the group for VLAN 101 to function properly?
Respuesta
-
In the VLAN 101 HSRP group on DSW1 decrease the priority value to a value that is less than the priority value configured in the VLAN 101 HSRP group on DSW2.
-
Disable preempt in the VLAN 101 HSRP group on DSW2
-
Decrease the decrement value in the track command for the VLAN 101 HSRP group on DSWT to a value less than the value in the track command for the VLAN 101 HSRP group on DSW2.
-
Enable preempt in the VLAN 101 HSRP group on DSW1
Pregunta 34
Pregunta
If a stack switch is configured to use SDM templates where are the templates stored?
Respuesta
-
All stack members
-
Flash memory
-
Master Switch
-
TFTP server
Pregunta 35
Pregunta
DSW1 should share the same MST region with switch DSW2. Which statement is true?
Respuesta
-
Configure DSW1 with the same version number and VLAN-to-instance mapping as shown on DSW2
-
DSW1 automatically inherits MST configuration for DSW2 because they have the same domain name.
-
DSW2 uses the VTP server mode to automatically propagate the MST configuration to DSW1.
-
Configure DSW1 with the same region name, revision number and VLAN-to-instance mapping as shown on DSW2.
-
DSW1 is in VTP client mode with a lower configuration revision number, therefore, it automatically inherits MST configuration from DSW2.
Pregunta 36
Pregunta
A network engineer must set the load balance method on an existing port channel. Which action must be done to apply a new load balancing method?
Respuesta
-
Configure the new load balancing method using port-channel load-balance
-
Ensure the IP CEF is enabled globally to support all load balancing methods
-
Upgrade the PFC to support the latest load balancing methods
-
Adjust the switch SDM back to "default"
Pregunta 37
Pregunta
RSPAN has been configured on a Cisco Catalyst switch, however, traffic is not being replicated to the remote switch. Which type of mis-configuration is the cause?
Respuesta
-
The local switch is overloaded with the amount of sourced traffic that must be replicated to the remote switch.
-
The local and remote RSPAN switches are configured using different sessions IDs
-
RSPAN designated VLAN is missing the remote span command
-
The local RSPAN switch is replacing only Rx traffic to the remote switch.
Pregunta 38
Pregunta
What happens with the 'switchport mode trunk portfast" command?
Respuesta
-
Trunk port will be immediately turned on
-
Trunk port can be portfast mode
-
BDPU turn this port to shutdown
-
BPDU turn this port to err-disabled state
Pregunta 39
Pregunta
Ferris Plastics, Inc is a medium sized company with an enterprise network (access, distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. The distribution switches are configured to use HSRP to provide a high availability solution.
- DSW1 primary device for VLAN 101, VLAN 102 and VLAN 105
- DSW2 primary device for VLAN 103 and VLAN 104
-A failure of GigabitEthernet1/0/1 on primary device should cause the primary device to release its status as the primary device, unless GigabitEhternet1/0/1 on backup device has also failed.
Troubleshooting has identified several issues. Currently all interfaces are up. Using the running configuration and show commands, you have been asked to investigate and respond to the following question.
During routine maintenance GiE1/0/1 on DSW1 was shut down. All other interfaces were up. DSW2 became that active HSRP device for VLAN 101 as desired. However, after GiE1/0/1 on DSW1 was reactivated, DSW1 did not become the active router for VLAN 101 as desired. What needs to be done to the group for VLAN 101 function properly?
Respuesta
-
In the VLAN101 HSRP group on DSW1 decrease the priority value to a value that is less than the priority value configured in the VLAN 101 HSRP group on DSW2.
-
Enable preempt in the VLAN 101 HSRP group on DSW1
-
Disable preempt in the VLAN 101 HSRP group on DSW2
-
Decrease the decrement value in the track command for the VLAN 101 HSRP group on DSWT to a value less than the value in the track command for the VLAN 101 HSRP group on DSW2
Pregunta 40
Pregunta
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, are no longer working. The standard configuration is used for each uplink. What is wrong with the configuration?
Respuesta
-
The switchport mode trunk command should be first in the output
-
The control traffic must be manually enabled on the new native VLAN
-
The native VLAN is not present on the trunk
-
The interface is administratively down
-
The encapsulation type is incorrect
Pregunta 41
Pregunta
Ferris Plastics, Inc is a medium sized company with an enterprise network (access, distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. The distribution switches are configured to use HSRP to provide a high availability solution.
- DSW1 primary device for VLAN 101, VLAN 102 and VLAN 105
- DSW2 primary device for VLAN 103 and VLAN 104
-A failure of GigabitEthernet1/0/1 on primary device should cause the primary device to release its status as the primary device, unless GigabitEhternet1/0/1 on backup device has also failed.
All Interfaces are active. DSW2 has not become the active device for the VLAN 103 HSRP group. As related to the VLAN 103 HSRP group, what can be done to make the group function properly?
Respuesta
-
On DSW1 decrease the priority value to a value less than 190 and greater than 150.
-
On DSW1 disable preempt
-
On DSW2 increase the decrement value in the track command to a value greater than 10 and less than 50.
-
On DSW2 increase the priority value to a value greater than 200 and less than 250.
Pregunta 42
Pregunta
Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP. They have questions about how these two devices will perform in the event of a device failure.
If R1 interface e0/0 goes down and recovers, which of the statements regarding HSRP priority is true?
Respuesta
-
The interface will have the priority decremented by 60 for HSRP group 1
-
The interface will have it's current priority incremented by 40 for HSRP group 1
-
The interface will have the priority decremented by 40 for HSRP group 1
-
The interface will have its current priority incremented by 60 for HSRP group 1
-
The interface will default to the priority of 100 for HSRP group 1
Pregunta 43
Pregunta
A network engineer must improve bandwidth and resource utilization on the switches by stopping the inefficient flooding of frames on trunk ports where the frames are not needed. Which Cisco IOS feature can be used to achieve this task?
Pregunta 44
Pregunta
What is required for a LAN switch to support 802.1q Q-in-Q encapsulation?
Respuesta
-
Support less than 1500 MTU
-
Support 1504 MTU or higher
-
Support 1552 layer 3 IP and IPX packet
-
Support 1547 MTU only
Pregunta 45
Pregunta
The network monitoring application alerts a network engineer of a client PC that is acting as a rouge DHCP server. Which two commands help trace this PC when the MAC address is known?
Respuesta
-
switch# show ip verify source
-
switch# show mac address-table
-
switch# show port security
-
switch# show mac address-table address
-
switch# show ip arp inspection
Pregunta 46
Pregunta
Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP. They have questions about how these two devices will perform in the event of a device failure.
What issue is causing R1 and R2 to both be displayed as the HSRP active router for group 2?
Respuesta
-
The HSRP group authentication is misconfigured
-
The HSRP group priorities are different
-
There is an HSRP group number mismatch
-
The HSRP timers mismatch
Pregunta 47
Pregunta
After reviewing UDLD status on switch ports, an engineer notices that the current bidirectional state for an access port is "Unknown". Which statement describes what this indicates about the status of the port?
Respuesta
-
The port is fully operational and no known issues are detected.
-
The UDLD port is placed in the "unknown" state for 5 seconds until the next UDLD packet is received on the interface.
-
The bidirectional status of "unknown" indicated that the port will go into the disabled state because it stopped received UDLD packets from its neighbor.
-
UDLD moved into aggressive mode after inconsistent acknowledgements were detected.
Pregunta 48
Pregunta
Ferris Plastics, Inc is a medium sized company with an enterprise network (access, distribution and core switches) that provides LAN connectivity from user PCs to corporate servers. The distribution switches are configured to use HSRP to provide a high availability solution.
- DSW1 primary device for VLAN 101, VLAN 102 and VLAN 105
- DSW2 primary device for VLAN 103 and VLAN 104
-A failure of GigabitEthernet1/0/1 on primary device should cause the primary device to release its status as the primary device, unless GigabitEhternet1/0/1 on backup device has also failed.
Troubleshooting has identified several issues. Currently all interfaces are up. Using the running configuration and show commands, you have been asked to investigate and respond to the following question.
During routine maintenance GiE1/0/1 on DSW1 and DSW2 were shut down. All other interfaces were up. During this time DSW1 became the active router for the VLAN 104 HSRP group. As related to the VLAN 104 HSRP group, what can be done to make the group function properly?
Respuesta
-
On DSW1 increase the decrement value in the track command to a value greater than 6.
-
On DSW1 disable preempt
-
On DSW1 decrease the decrement value in the track command to a value less than 1.
-
On DSW2 decrease the priority value to a value less than 150
Pregunta 49
Pregunta
Which feature is automatically configured when an administrator enables a voice VLAN?
Respuesta
-
Portfast
-
QoS
-
802.1Q Trunking
-
Private VLANs
Pregunta 50
Pregunta
You are connecting a new switch to the topology shown. The switch has been partially configured and you need to complete the configuration to enable PC1 to communicate with PC2. Which configuration is correct?
Respuesta
-
vtp domain CCNP_TEST
vtp pass cisco123
vtp version 3
vtp mode server
int e0/0
sw mode access
sw access vlan 100
-
vtp domain CCNP_Test
vtp pass cisco123
vtp version 3
vtp mode client
int e0/0
sw mode access
sw access vlan 200
-
vtp domain CCNP_Test
vtp pass cisco123
vtp version 3
vtp mode client
int e0/0
sw mode access
sw access vlan 100
-
vtp domain CCNP_Test
vtp pass cisco123
vtp version 2
vtp mode client
int e0/0
sw mode access
sw access vlan 100
-
vtp domain CCNP_Test
vtp pass cisco123
vtp version 3
vtp mode transparent
int e0/0
sw mode access
sw access vlan 200