Section 2 – Configure ESX/ESXi Networking
- Objective 2.2 – Configure vNetwork Distributed Switches
QUESTION 32
If you are planning on installing the Cisco Nexus 1000v Distributed Switch on your vSphere cluster, which Licensing package would you need to purchase?
A.Enterprise Plus
B.Advanced
C.Enterprise
D.Standard
Answer: A
Explanation:
The Cisco Nexus 1000V is VMware Ready Certified (Figure 2) and supports vSphere 4 Enterprise Plus
QUESTION 33
An administrator is building a vNetwork Distributed Switch. Which of the following describes what happens if an attempt is made to add an uplink to the switch that is in use by a vNetwork Standard Switch?
A.The uplink is added and any virtual machines that were using the uplink lose connectivity
B.The uplink is added and any virtual machines that were using the uplink are added to the vNetwork Distributed Switch
C.A warning is displayed saying the uplink is currently in use and the uplink cannot be added
D.The uplink and the vNetwork Standard Switch are added to the vNetwork Distributed Switch
Answer: A
Explanation:
The screenshot above shows an uplink in use by a vNetwork Standard Switch being added to a vNetwork Distributed Switch. The vNetwork Standard Switch is not removed as a result of this operation. No virtual machines are moved as a result of assigning uplink ports.
QUESTION 34
Which are valid network load balancing policies for a vNetwork Distributed Switch (Select all that apply)?
A.route based on explicit failover order
B.route based on source MAC hash
C.route based on source and destination MAC hash
D.route based on source IP hash
E.route based on the originating virtual port ID
Answer: ABE
Explanation:
Load Balancing – Specify how to choose an uplink.
* Route based on the originating port ID – Choose an uplink based on the virtual port where the traffic entered the virtual switch.
* Route based on ip hash – Choose an uplink based on a hash of the source and destination IP addresses of each packet. For non-IP packets, whatever is at those offsets is used to compute the hash.
* Route based on source MAC hash – Choose an uplink based on a hash of the source Ethernet.
* Use explicit failover order – Always use the highest order uplink from the list of Active adapters which passes failover detection criteria.
QUESTION 35
A vNetwork Distributed Switch is best described as?
A.A distributed set of vNetwork Standard Switches on individual ESX Hosts capable of forwarding traffic between hosts
B.A distributed set of vNetwork Standard Switches that allow a virtual machine to maintain a consistent network configuration between multiple ESX Hosts
C.A single virtual switch that aggregates existing vNetwork Standard Switches
D.A single virtual switch shared between multiple ESX Hosts
Answer: D
Explanation:
A VMware vNetwork Distributed Switch simplifies virtual machine networking by enabling you to set up virtual machine networking for your entire datacenter from a centralized interface. A single Network Distributed Switch spans many ESX hosts and aggregates networking to a centralized datacenter level. vNetwork Distributed Switch abstracts configuration of individual virtual switches and enables centralized provisioning, administration and monitoring through VMware vCenter Server.
QUESTION 36
Which of the following describes the functionality of traffic shaping on a vNetwork Distributed Switch?
A.vNetwork Distributed Switches support Best-Effort Traffic Shaping based on Quality of Service (QoS)
B.vNetwork Distributed Switches support Egress Traffic Shaping only
C.vNetwork Distributed Switches support both Ingress and Egress Traffic Shaping
D.vNetwork Distributed Switches support Ingress Traffic Shaping only
Answer: C
Explanation:
Mastering VMware vSphere 4, page 193.
‘with dvSwitch, you can apply shaping policies to both ingress and egrees traffic.’
QUESTION 37
Which of the following network policies is only available with vNetwork Distributed Switches?
A.Port Blocking Policy
B.Traffic Shaping Policy
C.VLAN Policy
D.Security Policy
Answer: A
Explanation:
The figures below show network policies available with vNetwork Standard Switches:
Traffic Shaping Policy, (B), VLAN Policy, (C), and Security Policy, (D).
