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Share some CCNP 300-115 exam questions and answers below.
While working in the core network building, a technician accidently bumps the fiber connection between two core switches and damages one of the pairs of fiber. As designed, the link was placed into a non-forwarding state due to a fault with UDLD. After the damaged cable was replaced, the link did not recover.
What solution allows the network switch to automatically recover from such an issue?
A. macros
B. errdisable autorecovery
C. IP Event Dampening
D. command aliases
E. Bidirectional Forwarding Detection
Answer: B

Which statement about Cisco Discovery Protocol configuration on a Cisco switch is true?
A. CDP is enabled by default and can be disabled globally with the command no cdp run.
B. CDP is disabled by default and can be enabled globally with the command cdp enable.
C. CDP is enabled by default and can be disabled globally with the command no cdp enable.
D. CDP is disabled by default and can be enabled globally with the command cdp run.
Answer: A

A network administrator configures 10 extended VLANs ranging from VLANs 3051 to 3060 in an enterprise network. Which version of VTP supports these extended VLANs?
A: version 1
B: version 2
C: version 3
D: VTP does not recognize extended VLANs.
Answer: C

What is the maximum number of VLANs that can be assigned to an access switchport without a voice VLAN?
A. 0
B. 1
C. 2
D. 1024
Answer: B

The network manager has requested that several new VLANs (VLAN 10, 20, and 30) are allowed to traverse the switch trunk interface. After the command switchport trunk allowed vlan 10, 20, 30 is issued, all other existing VLANs no longer pass traffic over the trunk.
What is the root cause of the problem?
A. The command effectively removed all other working VLANs and replaced them with the new VLANs.
B. VTP pruning removed all unused VLANs.
C. ISL was unable to encapsulate more than the already permitted VLANs across the trunk.
D. Allowing additional VLANs across the trunk introduced a loop in the network.
Answer: A

Which technique allows specific VLANs to be strictly permitted by the administrator?
A. VTP pruning
B. transparent bridging
C. trunk allowed VLANs
D. VLAN access-list
E. L2P tunneling
Answer: C

What does the command vlan dot1q tag native accomplish when configured under global configuration?
A. All frames within the native VLAN are tagged, except when the native VLAN is set to 1.
B. It allows control traffic to pass using the non-default VLAN.
C. It removes the 4-byte dot1q tag from every frame that traverses the trunk interface(s).
D. Control traffic is tagged.
Answer: D

What percentage of bandwidth is reduced when a stack cable is broken?
A. 0
B. 25
C. 50
D. 75
E. 100
Answer: C

A network engineer is extending a LAN segment between two geographically separated data centers.
Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment?
A. Modify the spanning-tree priorities to dictate the traffic flow.
B. Create a Layer 3 transit VLAN to segment the traffic between the sites.
C. Use VTP pruning on the trunk interfaces.
D. Configure manual trunk pruning between the two locations.
Answer: C

For client server failover purposes, the application server team has indicated that they must not have the standard 30 second delay before their switchport enters a forwarding state. For their disaster recovery feature to operate successfully, they require the switchport to enter a forwarding state immediately.
Which spanning-tree feature satisfies this requirement?
A. Rapid Spanning-Tree
B. Spanning-Tree Timers
C. Spanning-Tree FastPort
D. Spanning-Tree PortFast
E. Spanning-Tree Fast Forward
Answer: D

Which VTP mode is needed to configure an extended VLAN, when a switch is configured to use VTP versions 1 or 2?
A. transparent
B. client
C. server
D. Extended VLANs are only supported in version 3 and not in versions 1 or 2.
Answer: D

After configuring new data VLANs 1020 through 1030 on the VTP server, a network engineer notices that none of the VTP clients are receiving the updates.
What is the problem?
A. The VTP server must be reloaded.
B. The VTP version number must be set to version 3.
C. After each update to the VTP server, it takes up to 4 hours propagate.
D. VTP must be stopped and restarted on the server.
E. Another switch in the domain has a higher revision number than the server.
Answer: B

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?
A. All VLAN traffic is sent to the SPAN destination interface.
B. Traffic from VLAN 4 is not sent to the SPAN destination interface.
C. Filtering a trunked SPAN port effectively disables SPAN operations for all VLANs.
D. The trunk's native VLAN must be changed to something other than VLAN 1.
E. Traffic from VLANs 1 to 8, 39, and 52 is replicated to the SPAN destination port.
Answer: E

Which option is?valid for EtherChannel load balancing?
A: source MAC address and source IP address
B: destination MAC address and destination IP address
C: source MAC address and destination IP address
D: source MAC address and destination MAC address
Answer: D

Which statement about Cisco devices learning about each other through Cisco Discovery Protocol is true?
A. Each device sends periodic advertisements to multicast address 01:00:0C:CC:CC:CC.
B. Each device broadcasts periodic advertisements to all of its neighbors.
C. Each device sends periodic advertisements to a central device that builds the network topology.
D. Each device sends periodic advertisements to all IP addresses in its ARP table.
Answer: A

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