Cisco 642-813 Online Practice Questions and Exam Preparation

Cisco 642-813 Online Questions & Answers

• Question 171:

  Refer to the exhibit.

  

  The users in an engineering department that connect to the same access switch cannot access the network. The network engineer found that the engineering VLAN is missing from the database. Which action resolves this problem?

  A. Disable VTP pruning and disable 802.1q.
  B. Update the VTP revision number.
  C. Change VTP mode to server and enable 802.1q.
  D. Enable VTP pruning and disable 802.1q.
  C. Change VTP mode to server and enable 802.1q.

• Question 172:

  An administrator recently configured all ports for rapid transition using PortFast. After testing, it has been determined that several ports are not transitioning as they should. What is the reason for this?

  A. RSTP has been enabled per interface and not globally.
  B. The STP root bridge selection is forcing key ports to remain in non-rapid transitioning mode.
  C. STP is unable to achieve rapid transition for trunk links.
  D. The switch does not have the processing power to ensure rapid transition for all ports.
  C. STP is unable to achieve rapid transition for trunk links.

• Question 173:

  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.
  D. Control traffic is tagged.

• Question 174:

  Which four LACP components are used to determine which hot-standby links become active after an interface failure within an EtherChannel bundle? (Choose four.)

  A. LACP system priority
  B. LACP port priority
  C. interface MAC address
  D. system ID
  E. port number
  F. hot-standby link identification number
  G. interface bandwidth
  A. LACP system priority
  B. LACP port priority
  D. system ID
  E. port number

• Question 175:

  What is the default amount by which the hot standby priority for the router is decremented or incremented when the interface goes down or comes back up?

  A. 1
  B. 5
  C. 10
  D. 15
  C. 10

• Question 176:

  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.
  A. The command effectively removed all other working VLANs and replaced them with the new VLANs.

• Question 177:

  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.
  A. CDP is enabled by default and can be disabled globally with the command no cdp run.

• Question 178:

  What is the default value for the errdisable recovery interval in a Cisco switch?

  A. 30 seconds
  B. 100 seconds
  C. 300 seconds
  D. 600 seconds
  C. 300 seconds

• Question 179:

  How does VTP pruning enhance network bandwidth?

  A. by restricting unicast traffic across VTP domains
  B. by reducing unnecessary flooding of traffic to inactive VLANs
  C. by limiting the spreading of VLAN information
  D. by disabling periodic VTP updates
  B. by reducing unnecessary flooding of traffic to inactive VLANs

• Question 180:

  Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or broadcast traffic?

  A. storm control
  B. port security
  C. VTP pruning
  D. VLAN trunking
  A. storm control