Cisco 300-115 Online Practice Questions and Exam Preparation

Cisco 300-115 Online Questions & Answers

• Question 741:

  What is the MAC address of an interface with HSRP group 37?

  A. 000.0c07.ac25
  B. 000.0c07.ac37
  C. http://certbus.com
  D. http://certbus.com
  A. 000.0c07.ac25

• Question 742:

  Which configuration do you apply to an interface so that it uses port security to learn and commit the first MAC address?

  A. Configure the switchport switch-port security violation restrict 1 command.
  B. Enable the sticky MAC addresses feature.
  C. Enable the static secure MAC addresses feature.
  D. Configure the switch for port-security aging type inactivity command.
  E. Configure the switchport port-security maximum 1 command.
  F. Disable the sticky MAC addresses feature.
  E. Configure the switchport port-security maximum 1 command.

• Question 743:

  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.
  C. Use VTP pruning on the trunk interfaces.

  ---

  Pruning unnecessary VLANs from the trunk can be performed with one of two methods:

  Manual pruning of the unnecessary VLAN on the trunk--This is the best method, and it avoids the use of the spanning tree. Instead, the method runs the pruned VLAN on trunks.

  VTP pruning--Avoid this method if the goal is to reduce the number of STP instances. VTP- pruned VLANs on a trunk are still part of the spanning tree. Therefore, VTP-pruned VLANs do not reduce the number of spanning tree port instances.

  Since the question asked for the choice that is an enhancement to the STP design, VTP pruning is the best choice.

  Reference: http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080890613.shtml

• Question 744:

  Select a valid VRRP configuration from a list of possible configurations.

  A. vrrp [group-number] ip [ip-address]
  B. vrrp [group-number] priority [priority]
  C. vrrp [group-number] preempt
  D. https://www.CertBus.com/300-115.html
  A. vrrp [group-number] ip [ip-address]
  B. vrrp [group-number] priority [priority]
  C. vrrp [group-number] preempt

• Question 745:

  Refer to the output below. Which effect of this configuration is true?

  Interface GigabitEthernet1/0 description to IT Room B 9745-173 switchport mode trunk switchport trunk encapsulation dot1q

  A. It enables tagging support for 1000 VLANs, including the native VLAN.
  B. It enables tagging for up to 4096 VLANs, but tagging on the native VLAN is not supported.
  C. It prevents the port from operating with VTP.
  D. It enables a Cisco-proprietary trunking protocol.
  B. It enables tagging for up to 4096 VLANs, but tagging on the native VLAN is not supported.

• Question 746:

  In which UDLD mode does a link remain up, even when a unidirectional link failure is detected?

  A. aggressive
  B. enable
  C. reset
  D. normal
  D. normal

• Question 747:

  Refer to the exhibit. Switch 15 is configured as the root switch for VLAN 10 but not for VLAN 20. If the STP configuration is correct, what will be true about Switch 15?

  

  A. All ports will be in forwarding mode.
  B. All ports in VLAN 10 will be in forwarding mode.
  C. All ports in VLAN 10 will be in forwarding mode and all ports in VLAN 20 will be in blocking mode.
  D. All ports in VLAN 10 will be in forwarding mode and all ports in VLAN 20 will be in standby mode.
  B. All ports in VLAN 10 will be in forwarding mode.

• Question 748:

  Which two statements about dynamic MAC address learning are true? (choose two)

  A. Dynamically-learned MAC addresses can be cleared on a per-interface basis only
  B. it must be enabled on ports with port security enabled
  C. switch interfaces learn MAC addresses dynamically by default
  D. it can be disabled on a per-vlan basis only
  E. Dynamiccally-learned MAC addresses supersede static MAC addresses
  A. Dynamically-learned MAC addresses can be cleared on a per-interface basis only
  C. switch interfaces learn MAC addresses dynamically by default

• Question 749:

  Which switchport feature will block the packet with unknown MAC address from sending it via port

  A. Switchport block unicast
  B. Packet with unknown MAC will be dropped
  C. Switchport portfast
  D. Switchport protect
  A. Switchport block unicast

• Question 750:

  when a switch is added to a stack, which switch automatically configures the new switch with the correct IOS?

  A. master
  B. peer
  C. adjacent
  D. slave
  A. master