VCP-DCV Configure and Manage vSphere Networking Practice Test 3 — 15 Questions

Question 1

An administrator sees this health check output. What should be done to verify VLAN 100 connectivity?

Accepted Answer

Create a VMkernel adapter on VLAN 100 and ping a gateway.. Option A is correct because to test VLAN 100, a VMkernel adapter with that VLAN should be created and used to ping a gateway. Option B is for pruning, not testing. Option C would test VM traffic, but VMkernel adapter is more direct for verification. Option D is not necessary.

Answer

Enable VLAN pruning on the physical switch.

Answer

Configure a port group for VLAN 100 and connect a VM.

Answer

Restart the management agents.

Question 2

The administrator configured this LAG on a distributed switch and corresponding LACP settings on the physical switch. But the LAG is not coming up. What is a likely issue?

Accepted Answer

The LAG mode is passive, but the physical switch is also configured as passive.. Option A is correct because if the LAG mode is passive and the physical switch is also configured as passive, LACP negotiation fails. Option B is not the issue as the load balancing policy is valid. Option C is irrelevant. Option D is not required.

Answer

The load balancing policy should be IP hash.

Answer

The LAG name is not used by the physical switch.

Answer

The uplinks should be in active/active mode.

Question 3

During a period of high network contention, management traffic is starved while NFS traffic gets the most bandwidth. Which configuration change would best address the issue?

Accepted Answer

Set a reservation for management traffic.. Option B is correct because setting a reservation for management traffic guarantees a minimum bandwidth. Option A increases shares but does not guarantee. Option C configures shaping on the port group, not NIOC. Option D increases the NFS limit, which does not help management. Option E removes vMotion reservation, which may free bandwidth but does not guarantee management.

Answer

Increase management shares to 100.

Answer

Increase the NFS limit to 1000 Mbps.

Answer

Enable traffic shaping on the management port group.

Answer

Remove the reservation from vMotion.

Question 4

An administrator needs to ensure that virtual machines can be migrated between ESXi hosts using vMotion. The virtual machines are connected to a standard vSwitch port group named 'Production'. What must be consistent across all hosts?

Accepted Answer

Port group name 'Production'. Option A is correct because vMotion requires the same port group name on source and target host. Option B is incorrect because MTU may differ if not using jumbo frames. Option C is incorrect because number of uplinks can vary. Option D is incorrect because load balancing policy does not affect vMotion compatibility.

Answer

MTU size

Answer

Number of uplinks

Answer

Load balancing policy

Question 5

An administrator has configured a vSphere Distributed Switch (VDS) with Network I/O Control. They need to guarantee bandwidth for a specific set of virtual machines. Which method should be used?

Accepted Answer

Create a port group with a custom network resource pool.. Option C is correct because Network Resource Pools allow bandwidth reservation. Option A is incorrect because traffic shaping only limits bandwidth, not guarantees. Option B is incorrect because SR-IOV provides direct passthrough, not bandwidth control. Option D is incorrect because VLAN priority does not guarantee bandwidth.

Answer

Enable SR-IOV on the physical NICs.

Answer

Set the virtual machine's network adapter to use a specific VLAN.

Answer

Configure Traffic Shaping on the distributed switch.

Question 6

An administrator has enabled jumbo frames (MTU 9000) on a vSphere Distributed Switch. Virtual machines on different hosts cannot communicate, but VMs on the same host can. The physical switches support jumbo frames. What is the most likely cause?

Accepted Answer

The physical NICs are not configured with MTU 9000.. Option B is correct because the physical NICs must also be configured with MTU 9000 to pass jumbo frames between hosts. Option A is incorrect because VMkernel adapters are used for management traffic, not VM data. Option C is incorrect because the port group MTU is already set on the DVS. Option D is incorrect because QoS is unrelated.

Answer

The physical switch QoS is misconfigured.

Answer

The VMkernel adapters are still using default MTU.

Answer

The distributed switch port group MTU is set to 1500.

Question 7

An administrator is configuring a vSphere Standard Switch. Which two settings are essential for basic network connectivity of virtual machines?

Accepted Answer

Port group name. Options A and B are correct because a port group must have a name and a VLAN ID (even if 0) to be created. Option C is incorrect because MTU can default. Option D is incorrect because the network adapter type is chosen by the VM. Option E is incorrect because the MAC address is assigned automatically.

Answer

MTU

Answer

Network adapter type (e.g., E1000)

Answer

Security policy

Question 8

An administrator is troubleshooting network connectivity for a virtual machine connected to a vSphere Distributed Switch. Which three components must be properly configured for the VM to communicate with the external network?

Accepted Answer

Physical NIC uplink. Options B, C, and E are correct. The physical NIC uplink provides connectivity from the host, the distributed switch uplink port group connects the DVS to the physical NIC, and the physical switch port must be configured to allow traffic. Option A is incorrect because the VM's IP address is an OS setting, not a vSphere networking component. Option D is incorrect because the VM's network adapter driver is a software component, not a configuration element.

Answer

VM's IP address

Answer

VM's network adapter driver

Question 9

An administrator needs to implement Network I/O Control (NIOC) on a vSphere Distributed Switch to guarantee bandwidth for vSphere Replication traffic. Which two actions are required?

Accepted Answer

Enable NIOC on the distributed switch.. Options A and B are correct. First, NIOC must be enabled on the DVS. Then a network resource pool must be created for vSphere Replication traffic. Option C is incorrect because assigning the VMkernel adapter to the resource pool is a subsequent step, not one of the two required actions (it is required but the question asks for two). Option D is incorrect because traffic shaping is not used with NIOC. Option E is incorrect because a separate VLAN is not required for NIOC.

Answer

Set the replication VMkernel adapter's traffic shaping to guaranteed.

Answer

Configure the replication network on a separate VLAN.

Answer

Assign the vSphere Replication VMkernel adapter to the resource pool.

Question 10

An administrator configures a VDS with two uplinks and sets the load balancing policy to 'Route based on IP hash'. What additional configuration is required on the physical switches to ensure proper traffic distribution?

Accepted Answer

Configure a static EtherChannel.. Option B is correct because IP hash load balancing requires a static EtherChannel on the physical switches to aggregate the two links. Option A is incorrect because LACP is a different protocol. Option C is incorrect because individual ports would cause misconfiguration. Option D is incorrect because port security is not related.

Answer

Use individual ports with no aggregation.

Answer

Set port security to allow multiple MAC addresses.

Answer

Enable Link Aggregation Control Protocol (LACP).

Question 11

An administrator has configured jumbo frames on a VDS and all physical switches. Virtual machines on different hosts can ping each other but cannot transfer files larger than 1500 bytes. What is the most likely cause?

Accepted Answer

The virtual machine's operating system MTU is set to 1500.. Option B is correct because the virtual machine's operating system MTU must be set to 9000 to use jumbo frames; otherwise, the OS will fragment packets. Option A is incorrect because VMkernel adapters do not affect VM data traffic. Option C is incorrect because physical NICs are already configured. Option D is incorrect because TCP offload would not cause this.

Answer

The physical NICs are not configured for jumbo frames.

Answer

The TCP/IP offload engine is causing fragmentation.

Answer

The VMkernel adapters are not configured with MTU 9000.

Question 12

An administrator has created a standard vSwitch port group with VLAN ID 100. Virtual machines in this port group can communicate with each other but not with devices on the physical network. What is a possible cause?

Accepted Answer

The physical switch port is not configured to pass VLAN 100.. Option B is correct because the physical switch port must be configured to pass VLAN 100, either as a trunk or access port. Option A is incorrect because duplicate MAC addresses would affect local communication too. Option C is incorrect because subnet mismatch would also affect local communication. Option D is incorrect because one uplink is sufficient.

Answer

The vSwitch has only one uplink.

Answer

The virtual machines have duplicate MAC addresses.

Answer

The virtual machines are using different subnets.

Question 13

An administrator needs to capture traffic from a specific virtual machine for troubleshooting. Which vSphere networking feature should be used?

Accepted Answer

Port mirroring on the VDS.. Option B is correct because port mirroring (also called SPAN) on a VDS copies traffic from a source port to a destination port for analysis. Option A is incorrect because NetFlow provides flow statistics, not packet captures. Option C is incorrect because traffic shaping controls bandwidth. Option D is incorrect because LLDP is for discovering network neighbors.

Answer

LLDP on the VDS.

Answer

NetFlow on the VDS.

Answer

Traffic shaping on the VDS.

Question 14

An administrator is configuring LACP on a VDS with two uplinks. Which configuration must match between the VDS and the physical switch?

Accepted Answer

All of the above.. Option D is correct because for a successful LACP negotiation, the port key, mode (active/passive), and rate (slow/fast) must be consistent on both ends. Option A alone is insufficient. Option B alone is insufficient. Option C alone is insufficient.

Answer

LACP mode (active/passive).

Answer

LACP rate (slow/fast).

Answer

LACP port key.

Question 15

An administrator needs to separate vMotion traffic from management traffic. Which should be created?

Accepted Answer

A new VMkernel adapter on a different subnet.. Option B is correct because creating a separate VMkernel adapter on a different subnet for vMotion is a best practice to isolate traffic. Option A is incorrect because a new standard switch port group alone does not separate traffic without a different IP network. Option C is incorrect because using the same VLAN but different IP subnet still shares the same broadcast domain. Option D is incorrect because a new physical NIC is often not necessary; a VLAN can suffice.

Answer

A new physical NIC.

Answer

A new VLAN on the existing port group.

Answer

A new standard switch port group.

VCP-DCV Configure and Manage vSphere Networking Practice Test 3 — 15 Questions

Exhibit

VCP-DCV Configure and Manage vSphere Networking Practice Test 3 — 15 Questions

Exhibit