Cisco 642-813 Online Practice Questions and Exam Preparation

Cisco 642-813 Online Questions & Answers

• Question 61:

  Which SDM template disables routing and supports the maximum number of unicast MAC addresses?

  A. VLAN
  B. access
  C. default
  D. routing
  A. VLAN

• Question 62:

  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 63:

  Scenario:

  You work for SWITCH.com. They have just added a new switch (SwitchB) to the existing network as shown in the topology diagram.

  RouterA is currently configured correctly and is providing the routing function for devices on SwitchA and SwitchB. SwitchA is currently configured correctly, but will need to be modified to support the addition of SwitchB. SwitchB has a minimal

  configuration. You have been

  tasked with competing the needed configuring of SwitchA and SwitchB. SwitchA and SwitchB use Cisco as the enable password.

  Configuration Requirements for SwitchA

  The VTP and STP configuration modes on SwitchA should not be modified.

  • SwitchA needs to be the root switch for vlans 11, 12, 13, 21, 22 and 23. All other vlans should be left are their default values.

  Configuration Requirements for SwitchB

  •

  Vlan 21 Name: Marketing will support two servers attached to fa0/9 and fa0/10

  •

  Vlan 22 Name: Sales will support two servers attached to fa0/13 and fa0/14

  •

  Vlan 23

  o Name: Engineering

  o will support two servers attached to fa0/15 and fa0/16

  •

  Access ports that connect to server should transition immediately to forwarding state upon detecting the connection of a device.

  •

  SwitchB VTP mode needs to be the same as SwitchA.

  •

  SwitchB must operate in the same spanning tree mode as SwitchA

  •

  No routing is to be configured on SwitchB

  •

  Only the SVI vlan 1 is to be configured and it is to use address 192.168.1.11/24

  Inter-switch Connectivity Configuration Requirements

  •

  For operational and security reasons trunking should be unconditional and Vlans 1, 21, 22 and 23 should tagged when traversing the trunk link.

  •

  The two trunks between SwitchA and SwitchB need to be configured in a mode that allows for the maximum use of their bandwidth for all vlans. This mode should be done with a non-proprietary protocol, with SwitchA controlling activation.

  •

  Propagation of unnecessary broadcasts should be limited using manual pruning on this trunk link.

  

  Check the answer below

  Here are steps: hostname SWITCH_B ! ! vlan 21 name Marketing vlan 22 name Sales vlan 23 name Engineering ! ! interface FastEthernet0/3 switchport trunk allowed vlan 1,21-23 channel-protocol lacp channel-group 1 mode passive switchport mode trunk ! interface FastEthernet0/4 switchport trunk allowed vlan 1,21-23 channel-protocol lacp channel-group 1 mode passive switchport mode trunk ! interface FastEthernet0/9 switchport access vlan 21 switchport mode access spanning-tree portfast ! interface FastEthernet0/10 switchport access vlan 21 switchport mode access spanning-tree portfast ! interface FastEthernet0/13 switchport access vlan 22 switchport mode access spanning-tree portfast ! ! interface FastEthernet0/14 switchport access vlan 22 switchport mode access spanning-tree portfast ! interface FastEthernet0/15 switchport access vlan 23 switchport mode access spanning-tree portfast ! interface FastEthernet0/16 switchport access vlan 23 switchport mode access spanning-tree portfast ! ! interface GigabitEthernet1/1 ! interface GigabitEthernet1/2 ! interface Port-channel 1 switchport mode trunk switchport trunk encapsulation dot1q spanning-tree allowed vlans 1,21-23 ! interface Vlan1 ip address 192.168.1.11 255.255.255.0 ! end SWITCH_B(config)# hostname SWITCH_A ! panning-tree vlan 11 root primary spanning-tree vlan 12 root primary spanning-tree vlan 13 root primary spanning-tree vlan 21 root primary spanning-tree vlan 22 root primary spanning-tree vlan 23 root primary ! interface FastEthernet0/3 switchport trunk allowed vlan 1,21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/4 switchport trunk allowed vlan 1,21-23 channel-protocol lacp channel-group 1 mode active switchport mode trunk ! interface FastEthernet0/21 switchport access vlan 21 switchport mode access ! interface FastEthernet0/22 switchport access vlan 22 switchport mode access ! interface FastEthernet0/23 switchport access vlan 23 switchport mode access ! interface GigabitEthernet1/1 ! interface GigabitEthernet1/2 ! interface Port-channel 1 ! interface Vlan1 no ip address shutdown ! ip default-gateway 192.168.1.1 ! ! End

• Question 64:

  What percentage of bandwidth is reduced when a stack cable is broken?

  B. 25
  C. 50
  D. 75
  E. 100
  C. 50

• Question 65:

  Which option is a benefit of using VSS?

  A. reduces cost
  B. simplifies configuration
  C. provides two independent supervisors with two different control planes
  D. removes the need for a First Hop Redundancy Protocol
  D. removes the need for a First Hop Redundancy Protocol

• Question 66:

  In a switch stack environment, what is the total bidirectional traffic flow between two logical counter-rotating paths?

  A. 16 Gbps
  B. 32 Gbps
  C. 64 Gbps
  D. 128 Gbps
  B. 32 Gbps

• Question 67:

  Which statement about the UDLD protocol is true?

  A. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures.
  B. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to advertise their identity, capabilities, and neighbors on a local area network.
  C. UDLD is a standardized Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures.
  D. UDLD is a standardized Layer 2 protocol that enables devices to advertise their identity, capabilities, and neighbors on a local area network.
  A. UDLD is a Cisco-proprietary Layer 2 protocol that enables devices to monitor the physical status of links and detect unidirectional failures.

• Question 68:

  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 69:

  Which statement describes what happens when a port configured with root guard receives a superior BPDU?

  A. The port goes into errdisabled state and stops forwarding traffic.
  B. The port goes into BPDU-inconsistent state and stops forwarding traffic.
  C. The port goes into loop-inconsistent state and stops forwarding traffic.
  D. The port goes into root-inconsistent state and stops forwarding traffic.
  D. The port goes into root-inconsistent state and stops forwarding traffic.

• Question 70:

  Interfaces are assigned to a VLAN, and then the VLAN is deleted. Which state are these interfaces in after the VLAN is deleted?

  A. They remain up, but they are reassigned to the default VLAN.
  B. They go down until they are reassigned to a VLAN.
  C. They go down, but they are reassigned to the default VLAN.
  D. They remain up, but they are reassigned to the native VLAN.
  B. They go down until they are reassigned to a VLAN.