Cisco 300-115 Online Practice Questions and Exam Preparation

Cisco 300-115 Online Questions & Answers

• Question 521:

  Storm control options apart from the default one. (Choose two.)

  A. log
  B. shutdown
  C. trap
  D. err-disable
  E. let admin know
  B. shutdown
  C. trap

• Question 522:

  What is the main use of a local database?

  A. As a backup in case of centralized database failure.
  B. http://certbus.com
  C. http://certbus.com
  D. http://certbus.com
  A. As a backup in case of centralized database failure.

• Question 523:

  A network engineer is trying to deploy a PC on a network. The engineer observes that when the PC is connected to the network, it takes 30 to 60 seconds for the PC to see any activity on the network interface card. Which Layer 2 enhancement can be used to eliminate this delay?

  A. Configure port duplex and speed to auto negotiation.
  B. Configure port to duplex full and speed 1000.
  C. Configure spanning-tree portfast.
  D. Configure no switchport.
  C. Configure spanning-tree portfast.

  ---

  When first powered on, each port goes through 4 states to ensure that there are no physical loops in the layer 2 broadcast domain. These steps are outlined as follows. With the initial version of spanning tree, this process could take from 3060 seconds. 1.Blocking - A port that would cause a switching loop, no user data is sent or received but it may go into forwarding mode if the other links in use were to fail and the spanning tree algorithm determines the port may transition to

  the forwarding state. BPDU data is still received in blocking state.

  2.Listening - The switch processes BPDUs and awaits possible new information that would cause it to return to the blocking state. 3.Learning - While the port does not yet forward frames (packets) it does learn source addresses from frames

  received and adds them to the filtering database (switching database)

  4.Forwarding - A port receiving and sending data, normal operation. STP still monitors incoming BPDUs that would indicate it should return to the blocking state to prevent a loop.

  STP PortFast causes a Layer 2 LAN interface configured as an access port to enter the forwarding state immediately, bypassing the listening and learning states.

  Reference: http://net.cmed.us/Home/ethernet-and-ip/spanning-tree-protocol

• Question 524:

  A new network that consists of several switches has been connected together via trunking interfaces. If all switches currently have the default VTP domain name "null", which statement describes what happens when a domain name is configured on one of the switches?

  A. The switch with the non-default domain name restores back to "null" upon reboot.
  B. Switches with higher revision numbers does not accept the new domain name.
  C. VTP summary advertisements are sent out of all ports with the new domain name.
  D. All other switches with the default domain name become VTP clients.
  C. VTP summary advertisements are sent out of all ports with the new domain name.

  ---

  By default, a switch will have a domain name of NULL and no password. If the switch hears a VTP advertisement it will automatically learn the VTP domain name, VLANs, and the configuration revision number.

  Summary advertisements sent out every 300 seconds and every time a change occurs on the VLAN database. Contained in a summary advertisement:

  VTP version

  Domain name

  Configuration revision number

  Time stamp

  MD5 encryption hash code

  Reference: https://rowell.dionicio.net/configuring-cisco-vtp/

• Question 525:

  Which two operational attributes can be checked for EtherChannel ports that are in err-disabled state?

  A. Port mode
  B. Port cost
  C. Duplex
  D. DTP
  E. VLAN
  A. Port mode
  E. VLAN

• Question 526:

  Refer to the exhibit.

  

  You change a switch SDM template to maximize the number of supported MAC addresses You notice that the switch routing performance has been significantly degraded. Which action do you take to correct the problem?

  A. Configure the sdm prefer routing command
  B. Execute the clear ip route * command to reset the routing table.
  C. Configure the sdm prefer default command
  D. Configure the sdm prefer vlan command.
  C. Configure the sdm prefer default command

• Question 527:

  You have just created a new VLAN on your network. What is one step that you should include in your VLAN-based implementation and verification plan?

  A. Verify that different native VLANs exist between two switches for security purposes.
  B. Verify that the VLAN was added on all switches with the use of the show vlan command.
  C. Verify that the switch is configured to allow for trunking on the switch ports.
  D. Verify that each switch port has the correct IP address space assigned to it for the new VLAN.
  B. Verify that the VLAN was added on all switches with the use of the show vlan command.

• Question 528:

  A network engineer tries to configure storm control on an EtherChannel bundle. What is the result of the configuration?

  A. The storm control settings will appear on the EtherChannel, but not on the associated physical ports.
  B. The configuration will be rejected because storm control is not supported for EtherChannel.
  C. The storm control configuration will be accepted, but will only be present on the physical interfaces.
  D. The settings will be applied to the EtherChannel bundle and all associated physical interfaces.
  D. The settings will be applied to the EtherChannel bundle and all associated physical interfaces.

  ---

  After you configure an EtherChannel, any configuration that you apply to the port-channel interface affects the EtherChannel; any configuration that you apply to the physical interfaces affects only the interface where you apply the configuration. Storm Control is an exception to this rule. For example, you cannot configure Storm Control on some of the members of an EtherChannel; Storm Control must be configured on all or none of the ports. If you configure Storm Control on only some of the ports, those ports will be dropped from the EtherChannel interface (put in suspended state). Therefore, you should configure Storm Control at the EtherChannel Interface level, and not at the physical interface level. Reference: http:// www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12- 2/31sg/ configuration/guide/ conf/ channel.html

• Question 529:

  A question on local database for consoling to network devices.

  A. Local user dbs can be main and also backup authentication method
  B. Local user dbs is the only backup authentication method
  C. You can set user privileged levels
  D. Local user dbs is used after 3 unsuccessful logins via Radius server
  A. Local user dbs can be main and also backup authentication method
  C. You can set user privileged levels

• Question 530:

  A question about root path election.

  A. interface bandwidth
  B. load
  C. reliability D. interface usage
  A. interface bandwidth