VMware VMware Certifications VCP5-DCV Questions & Answers

• Question 481:

  Which two statements are true about VLANs and portgroups defined on a vSphere Standard Switch? (Choose two.)

  A. A VLAN can be accessed by the entire virtual switch or individual portgroups.

  B. VLANs can be configured only on individual portgroups.

  C. Multiple portgroups are restricted from accessing the same VLAN.

  D. Multiple VLANs can be accessed by virtual machines connected to one portgroup.

  Correct Answer: AD

  Reference: http://www.vmware.com/files/pdf/virtual_networking_concepts.pdf (page 6, see port groups)

• Question 482:

  A vSphere Standard Switch has been configured for IP-based load balancing using two uplinks. A new uplink is added to the vswitch. What additional configuration is required by default?

  A. The uplink is placed in standby mode until it is added to the active NIC team.

  B. The uplink is considered active, but it will not participate in the active NIC team until assigned to a port group.

  C. The physical switch must add the new port to the existing 802.3ad group.

  D. The uplink is automatically marked as unused when it is added to IP-based NIC team.

  Correct Answer: C

  For 802.3ad group, you need to add a physical switch to make sure it works properly. The switch must be set to perform 802.3ad link aggregation in static mode ON and the virtual switch must have its load balancing method set to Route based on IP hash. Ensure that the participating NICs are connected to the ports configured on the same physical switch.

• Question 483:

  An administrator is creating a vSphere Standard Switch with virtual machine and VMkernel networking. The administrator has two uplinks attached to the switch and wants to make sure multiple sessions for a virtual machine can utilize both uplinks.

  Which load-balancing policy will guarantee this requirement is met, even if additional management or virtual machine traffic is added to the switch in the future?

  A. Route based on IP hash

  B. Route based on source MAC hash

  C. Route based on the originating port ID

  D. Use explicit failover.

  Correct Answer: A

  Reference: http://www.vmware.com/files/pdf/virtual_networking_concepts.pdf (page 8, see route based on IP hash)

• Question 484:

  An administrator wants to determine the current network adapter configuration for an uplink on an ESXi 5.x host.

  Which three items can be viewed from the Network Adapters section of the Configuration tab, using the vSphere Client? (Choose three.)

  A. VLAN configuration

  B. Adapter Driver

  C. Actual speed and duplex

  D. Adapter Name

  E. vSwitch configuration

  Correct Answer: CDE

  http://www.vmguru.nl/wordpress/wp-content/uploads/2010/03/networkcards-config-check.jpg

• Question 485:

  Which vSwitch or vSwitch port group policy setting allows packets to be received by a virtual machine with different destination MAC addresses than the configured MAC address?

  A. Promiscuous mode

  B. Traffic shaping

  C. Forged transmits

  D. MAC address changes

  Correct Answer: D

  Explanation: Mac address changes allows packets to be received by virtual machines with different destination mac addresses than the configured one.

• Question 486:

  What failure will beacon probing identify in vSphere networking?

  A. An improper VLAN configuration on a physical switch port

  B. A disconnected network cable

  C. A VMkernel IP mismatch affecting vMotion or HA traffic

  D. Jumbo frames improperly configured on an iSCSI target

  Correct Answer: A

  Reference: http://kensvirtualreality.wordpress.com/2009/04/10/the-great-vswitch-debate-part-4/ (see beacon probing)

• Question 487:

  Which methods can be used to migrate a VMkernel port from a vSphere Standard Switch to a vSphere Distributed Switch? (Choose two.)

  A. Use the Add Virtual Adapter wizard from the Manage Virtual Adapters window.

  B. Use the Manage Hosts wizard from the Configuration tab of the vDS.

  C. Use the Migrate Virtual Machine Networking option to select the port from a list.

  D. Edit the Network Adapter settings for the port and select a dvPort group from the list.

  Correct Answer: AB

  Reference: http://www.dashvue.com/2011/04/migrating-to-vnetwork-distributed-switch/

• Question 488:

  Which statement describes the functionality of traffic shaping on a vSphere Standard Switch?

  A. vSphere Standard Switches support only egress traffic shaping.

  B. vSphere Standard Switches support both ingress and egress traffic shaping.

  C. vSphere Standard Switches support best-effort traffic shaping based on quality of service (QoS).

  D. vSphere Standard Switches support only ingress traffic shaping.

  Correct Answer: A

  A traffic shaping policy is defined by average bandwidth, peak bandwidth, and burst size. You can establish a traffic shaping policy for each port group and each distributed port or distributed port group. ESXi shapes outbound network traffic on standard switches and inbound and outbound traffic on distributed switches. Traffic shaping restricts the network bandwidth available on a port, but can also be configured to allow bursts of traffic to flow through at higher speeds.

• Question 489:

  What are two network load-balancing policies for a vSphere Distributed Switch? (Choose two.)

  A. Route based on source MAC hash

  B. Route using physical NIC load

  C. Route based on the destination virtual port ID

  D. Route based on port IP hash

  Correct Answer: AD

  Reference: http://pubs.vmware.com/vsphere51/index.jsp#com.vmware.vsphere.networking.doc/GUID-796BBD4A-18E2-4E19-889C- C529AF011323.html

• Question 490:

  Which type of port on a secondary private VLAN can communicate with promiscuous ports and other ports that share its VLAN tag?

  A. Isolated

  B. Promiscuous

  C. Community

  D. Trunked

  Correct Answer: C

  Reference: http://pubs.vmware.com/vsphere-55/topic/com.vmware.ICbase/PDF/vsphere-esxi- vcenter- server-55-networking-guide.pdf