Cisco 300-115 Online Practice Questions and Exam Preparation

Cisco 300-115 Online Questions & Answers

• Question 251:

  Which two statements about the VLAN database are true? (Choose two.)

  A. VLAN information is stored in the running configuration
  B. It supports VLANs 1 to 1001
  C. If the switch is in VTP transparent mode, the VLAN can be configured if it is in VLAN database mode.
  D. It supports extended VLANs.
  E. VLAN IDs can be duplicated, but their names must be unique
  B. It supports VLANs 1 to 1001
  C. If the switch is in VTP transparent mode, the VLAN can be configured if it is in VLAN database mode.

• Question 252:

  Which errdisable recovery command option enables a device to recover from a potential loop condition?

  A. link-flap
  B. security-violation
  C. udld
  D. dtp-flap
  C. udld

• Question 253:

  Which information in a RADIUS access-request packet is encrypted?

  A. entire header
  B. username and password
  C. entire payload
  D. password
  D. password

• Question 254:

  A network engineer changed the port speed and duplex setting of an existing EtherChannel bundle that uses the PAgP protocol. Which statement describes what happens to all ports in the bundle?

  A. PAgP changes the port speed and duplex for all ports in the bundle.
  B. PAgP drops the ports that do not match the configuration.
  C. PAgP does not change the port speed and duplex for all ports in the bundle until the switch is rebooted.
  D. PAgP changes the port speed but not the duplex for all ports in the bundle.
  A. PAgP changes the port speed and duplex for all ports in the bundle.

  ---

  PAgP aids in the automatic creation of EtherChannel links. PAgP packets are sent between EtherChannel- capable ports in order to negotiate the formation of a channel. Some restrictions are deliberately introduced into PAgP. The restrictions are:

  PAgP does not form a bundle on ports that are configured for dynamic VLANs. PAgP requires that all ports in the channel belong to the same VLAN or are configured as trunk ports. When a bundle already exists and a VLAN of a port is modified, all ports in the bundle are modified to match that VLAN.

  PAgP does not group ports that operate at different speeds or port duplex. If speed and duplex change when a bundle exists, PAgP changes the port speed and duplex for all ports in the bundle.

  PAgP modes are off, auto, desirable, and on. Only the combinations auto-desirable, desirable- desirable, and on-on allow the formation of a channel. The device on the other side must have PAgP set to on if a device on one side of the channel does not support PAgP, such as a router. Reference: http:// www.cisco.com/c/ en/us/support/docs/lan-switching/etherchannel/12023-4.html

• Question 255:

  Which command removes all Mac-address from port channel ?

  A. Clear mac-address table dynamic
  B. Clear mac-address table dynamic addresses mac addresses
  C. Clear mac-address table dynamic interface interface-id gyros for all
  D. Clear mac-addredss table dynamic vlan vlan-id
  A. Clear mac-address table dynamic

• Question 256:

  Drag and Drop

  Drag the description from the left to add on appropriate section of Port Cost / Switch Port Priority / Port Priority

  Select and Place:

  

  

• Question 257:

  Which technology provides a multichassis IP connection between VSS-enabled switches and downstream devices?

  A. LAG
  B. PAgP
  C. MEC
  D. ICCP
  E. LACP
  F. BFD
  C. MEC

• Question 258:

  To provide security, a service provider various private VLANs in its backbone network infrastructure to prevent certain VLANs communicating to each other. Which version of VTP supports the use of private VLANs?

  A. version 1
  B. version 3
  C. VTP does not support private VLANs
  D. version 2
  B. version 3

• Question 259:

  Refer to the exhibit.

  

  BPDUGuard is enabled on both ports of SwitchA. Initially, LinkA is connected and forwarding traffic. A new LinkB is then attached between SwitchA and HubA. Which two statements about the possible result of attaching the second link are true? (Choose two.)

  A. The switch port attached to LinkB does not transition to up.
  B. One or both of the two switch ports attached to the hub goes into the err-disabled state when a BPDU is received.
  C. Both switch ports attached to the hub transitions to the blocking state.
  D. A heavy traffic load could cause BPDU transmissions to be blocked and leave a switching loop.
  E. The switch port attached to LinkA immediately transitions to the blocking state.
  B. One or both of the two switch ports attached to the hub goes into the err-disabled state when a BPDU is received.
  D. A heavy traffic load could cause BPDU transmissions to be blocked and leave a switching loop.

• Question 260:

  Which two commands allow you to verify the operational mode status of interfaces or trunk status? (Choose two.)

  A. show interface switchport
  B. show interface trunk
  C. www.certbus.com
  D. www.certbus.com
  A. show interface switchport
  B. show interface trunk