Cisco 642-813 Online Practice Questions and Exam Preparation

Cisco 642-813 Online Questions & Answers

• Question 191:

  A switch is added into the production network to increase port capacity. A network engineer is configuring the switch for DHCP snooping and IP Source Guard, but is unable to configure ip verify source under several of the interfaces. Which option is the cause of the problem?

  A. The local DHCP server is disabled prior to enabling IP Source Guard.
  B. The interfaces are configured as Layer 3 using the no switchport command.
  C. No VLANs exist on the switch and/or the switch is configured in VTP transparent mode.
  D. The switch is configured for sdm prefer routing as the switched database management template.
  E. The configured SVIs on the switch have been removed for the associated interfaces.
  B. The interfaces are configured as Layer 3 using the no switchport command.

• Question 192:

  Refer to the exhibit.

  

  Which set of configurations will result in all ports on both switches successfully bundling into an EtherChannel?

  A. switch1 channel-group 1 mode active switch2 channel-group 1 mode auto
  B. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode passive
  C. switch1 channel-group 1 mode on switch2 channel-group 1 mode auto
  D. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode auto
  D. switch1 channel-group 1 mode desirable switch2 channel-group 1 mode auto

• Question 193:

  Which statement about using native VLANs to carry untagged frames is true?

  A. Cisco Discovery Protocol version 2 carries native VLAN information, but version 1 does not.
  B. Cisco Discovery Protocol version 1 carries native VLAN information, but version 2 does not.
  C. Cisco Discovery Protocol version 1 and version 2 carry native VLAN information.
  D. Cisco Discovery Protocol version 3 carries native VLAN information, but versions 1 and 2 do not.
  A. Cisco Discovery Protocol version 2 carries native VLAN information, but version 1 does not.

• Question 194:

  Which statement is true about RSTP topology changes?

  A. Any change in the state of the port generates a TC BPDU.
  B. Only nonedge ports moving to the forwarding state generate a TC BPDU.
  C. If either an edge port or a nonedge port moves to a block state, then a TC BPDU is generated.
  D. Only edge ports moving to the blocking state generate a TC BPDU.
  E. Any loss of connectivity generates a TC BPDU.
  B. Only nonedge ports moving to the forwarding state generate a TC BPDU.

• Question 195:

  After UDLD is implemented, a Network Administrator noticed that one port stops receiving UDLD packets. This port continues to reestablish until after eight failed retries. The port then transitions into the errdisable state. Which option describes what causes the port to go into the errdisable state?

  A. Normal UDLD operations that prevent traffic loops.
  B. UDLD port is configured in aggressive mode.
  C. UDLD is enabled globally.
  D. UDLD timers are inconsistent.
  B. UDLD port is configured in aggressive mode.

• Question 196:

  A network engineer wants to add a new switch to an existing switch stack. Which configuration must be added to the new switch before it can be added to the switch stack?

  A. No configuration must be added.
  B. stack ID
  C. IP address
  D. VLAN information
  E. VTP information
  A. No configuration must be added.

• Question 197:

  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. However, VLANs are not passing from the VTP server (existing network) to the VTP clients. What must be done to fix this?

  A. Remove the VTP domain name from all switches with "null" and then replace it with the new domain name.
  B. Configure a different native VLAN on all new switches that are configured as VTP clients.
  C. Provision one of the new switches to be the VTP server and duplicate information from the existing network.
  D. Ensure that all switch interconnects are configured as trunks to allow VTP information to be transferred.
  D. Ensure that all switch interconnects are configured as trunks to allow VTP information to be transferred.

• Question 198:

  What effect does the mac address-table aging-time 180 command have on the MAC address-table?

  A. This is how long a dynamic MAC address will remain in the CAM table.
  B. The MAC address-table will be flushed every 3 minutes.
  C. The default timeout period will be 360 seconds.
  D. ARP requests will be processed less frequently by the switch.
  E. The MAC address-table will hold addresses 180 seconds longer than the default of 10 minutes.
  A. This is how long a dynamic MAC address will remain in the CAM table.

• Question 199:

  Which feature is automatically configured when an administrator enables a voice VLAN?

  A. 802.1Q trunking
  B. PortFast
  C. QoS
  D. private VLANs
  B. PortFast

• Question 200:

  Refer to the exhibit.

  

  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?

  A. VLAN spanning-tree in SW-2 is configured.
  B. spanning-tree bpdu-filter is enabled.
  C. 802.1q trunks are on both sides, both with native VLAN mismatch.
  D. VLAN ID 1 should not be used for management traffic because its unsafe.
  C. 802.1q trunks are on both sides, both with native VLAN mismatch.