Configure and Manage vSphere Networking

An administrator is configuring a distributed switch with LACP. Which two statements are true regarding LACP support on vSphere distributed switches? (Choose two.)

An organization uses a VDS with 4 hosts. They want to use Network I/O Control (NIOC) to prioritize vMotion traffic over management traffic. After configuring NIOC, the administrator notices that vMotion performance is not improved. What could be the cause?

An administrator is troubleshooting SSH connectivity to an ESXi host from a management workstation at 10.10.10.2. The SSH session is established, but the administrator cannot ping the host's IP 10.10.10.1. Based on the exhibit, what is the most likely cause?

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

A large financial organization has a vSphere cluster with 10 ESXi hosts (8.x) connected to a pair of Nexus 9000 switches via two 10G LACP link aggregation groups (LAGs) per host. Each host has a vSphere Distributed Switch (vDS 7.0.3) with two LAGs (LAG1: vmnic0, vmnic1; LAG2: vmnic2, vmnic3). The vDS has three port groups: Production (VLAN 100-200), DMZ (VLAN 300), and Storage (VLAN 400). The port groups use LACP with load balancing 'Route based on IP hash'. Recently, the network team changed the physical switch port channels from mode 'active' to 'passive' on the downstream ports connected to host #3, without informing the virtualization team. Within hours, VMs on host #3 experience intermittent connectivity; some can communicate but others cannot, and vMotion between host #3 and other hosts fails with a network unreachable error. iSCSI storage traffic from host #3 is also unstable. The administrator verifies that the vDS LACP configuration on host #3 still expects 'active' mode. Which of the following actions is the most effective to restore full functionality while maintaining LACP?

An administrator is configuring a distributed switch for a cluster of ESXi hosts. The requirements are: VLAN 100 for production, VLAN 200 for management, and a separate VLAN 300 for vMotion. The management network should be isolated from production traffic. What is the best practice for configuring these networks on the distributed switch?

An administrator is troubleshooting an issue where a VM on a vSphere Distributed Switch cannot receive traffic from outside its subnet. The VM can send traffic out and receive replies from hosts on the same subnet. The default gateway is configured correctly. What is the most likely cause?

A company runs a three-tier application on vSphere 7.0. The web tier uses VLAN 100, app tier VLAN 200, and database tier VLAN 300. Each tier is on a separate port group on a vSphere distributed switch. The environment uses Network I/O Control (NIOC) with shares set to: Web (50), App (30), Database (20). The physical uplinks are two 10 GbE NICs in a team. Recently, the database team reports slow performance during peak hours. The network team checks the physical switches and finds no congestion. The ESXi host shows the two uplinks are heavily utilized with many dropped packets on the database port group. The administrator suspects that the database traffic is being starved by other traffic. Which action should the administrator take to resolve the issue? A. Increase the number of physical uplinks to four 10 GbE NICs. B. Change the NIOC shares to Web (10), App (30), Database (60). C. Create a separate vSphere standard switch for the database tier. D. Enable SR-IOV on the physical NICs and assign virtual functions to database VMs.

A vSphere environment uses a vSphere Distributed Switch (vDS) with 10G uplinks and Network I/O Control (NIOC) enabled. Administrators report that during peak traffic, NFS storage traffic is experiencing high latency, while other traffic types remain unaffected. The vDS has default NIOC shares and limits. Which action should be taken to prioritize NFS traffic without completely starving other traffic?

A vSphere administrator is configuring Network I/O Control (NIOC) on a vSphere Distributed Switch to prioritize vMotion traffic during maintenance windows. The environment has three system traffic classes: Management, NFS, and vMotion. The administrator wants to ensure that when the network is congested, vMotion gets at least 50% of the available bandwidth, while Management and NFS each get at least 25%. Which NIOC configuration achieves this?

Refer to the exhibit. The ESXi host has three VMkernel interfaces. A vMotion operation fails with a routing error. Which is the most likely cause?

Refer to the exhibit. An administrator notices that two uplinks are down on the VDS. Which step should be taken first to restore redundancy?

Based on the Healthcheck output for a distributed port (DVS Port 1) on dvs0, what can be concluded?

A vSphere administrator is troubleshooting connectivity issues for a virtual machine that is unable to communicate with other VMs on the same VLAN. The VM is connected to a distributed port group on a vSphere Distributed Switch (vDS). The administrator verifies that the VM's IP configuration is correct and that the port group is configured with the correct VLAN ID. However, the VM can only communicate with other VMs on the same ESXi host. What is the most likely cause?

An administrator needs to provide redundancy for VM traffic across multiple physical NICs on a vSphere Standard Switch. Which NIC teaming policy should be used to ensure fault tolerance without load balancing?

A company deploys a VDS with multiple uplinks and uses Route based on originating virtual port for load balancing. The network team reports that traffic from VMs on the same host is not balanced across uplinks. The administrator verifies that the physical switch ports are all in the same port-channel. What could be the cause?

An ESXi host has two VMkernel interfaces as shown in the exhibit. The iSCSI targets are on the same subnet as vmk1 and support jumbo frames. The administrator reports that iSCSI sessions are experiencing high error rates and poor performance. What is most likely the cause?

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

A vSphere administrator is deploying a vSphere Distributed Switch (vDS) version 7.0. The environment has ESXi hosts with hardware version 7.0. The administrator needs to ensure that the vDS supports Network I/O Control version 3 (NIOCv3). What must be true for NIOCv3 to function correctly?

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?

A vSphere administrator needs to provide redundancy for VM traffic on a vSphere Standard Switch by using multiple physical uplinks. Which teaming configuration should be used to ensure that if one uplink fails, traffic automatically fails over to another?

Which four types of traffic can be assigned to a separate VMkernel adapter on an ESXi host?

An administrator is configuring a vSphere distributed switch. Which TWO are valid uplink teaming policies? (Choose two.)

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

A vSphere administrator is designing a network for a cluster of ESXi hosts. Each host has four 10GbE uplinks. The cluster will host mission-critical VMs that require maximum throughput and redundancy. The administrator plans to use Network I/O Control (NIOC) and a vSphere Distributed Switch (vDS). Which configuration best ensures consistent network performance for all VMs?

Refer to the exhibit. The administrator notices rx_dropped packets on vmnic0 but no errors. What is the most likely cause of the dropped packets?

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?

Which three factors influence the behavior of Network I/O Control (NIOC) when allocating bandwidth to different traffic types? (Choose three.)

A VM on a vSphere Distributed Switch is experiencing intermittent connectivity drops. The administrator checks the vDS health check and sees no errors. The physical switch logs show no issues. The VM is on a port group with VLAN 200. The administrator runs a ping from the VM to the gateway and notices packet loss. What should the administrator investigate next?

Which two actions must the administrator take to ensure network connectivity for VMs on a new distributed switch?

After upgrading the physical switches, the LAG (Link Aggregation Group) on a VDS does not come up. The VDS LAG configuration shows LACP active mode. The physical switch ports are configured with LACP active mode as well. What is the most likely cause?

A VM cannot connect to the network after being migrated to a different host in the cluster. The VM's network adapter is connected to a standard switch port group that exists on the source host but not on the destination host. What is the most likely cause?

An administrator configures a Private VLAN on a distributed switch with primary VLAN 100 and secondary VLANs 101 (isolated) and 102 (community). A VM on isolated secondary VLAN 101 needs to communicate with a VM on community secondary VLAN 102. What additional configuration is required?

An administrator is reviewing the network configuration of a standard switch. The exhibit shows the current settings for a port group. Which change would improve load distribution for VM traffic?

An organization is using Network I/O Control (NIOC) on a distributed switch to manage bandwidth for different traffic types. The current configuration assigns 50 shares to management traffic, 50 shares to vMotion traffic, and 100 shares to NFS storage traffic. During peak hours, management traffic is suffering from high latency. The administrator must prioritize management traffic over all others while still ensuring minimum bandwidth for storage. Which action would best address the issue?

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?

Refer to the exhibit. An administrator notices that the ESXi host is listening on both IPv4 and IPv6 for HTTPS. However, IPv6 traffic is not being forwarded to the host. Which configuration change is most likely needed?

Refer to the exhibit. An administrator notices that virtual machines on the Production port group are unable to communicate with hosts on VLAN 200. The Management and Storage port groups work fine. What is the most likely cause?

An administrator needs to configure a vSphere Standard Switch (vSS) for a small environment. Which component must be created first before adding a virtual machine to the network?

Refer to the exhibit. An administrator checks the status of a distributed switch port and sees no errors or drops. However, virtual machines on this port cannot communicate with the default gateway at 192.168.200.1. What is the most likely cause?

Which THREE of the following are prerequisites for configuring LACP on a vSphere Distributed Switch? (Select exactly three.)

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?

A vSphere administrator is troubleshooting connectivity issues for a virtual machine on a standard switch. The VM is configured with VLAN 100, but cannot ping the default gateway. The VMkernel port on the host is on VLAN 200. The physical switch port connected to the host is configured as a trunk port allowing VLANs 100 and 200. Which action should the administrator take to resolve the issue?

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?

Which THREE are valid methods to isolate and secure management traffic on a vSphere Distributed Switch? (Choose three.)

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?

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

A vSphere administrator notices that VMs on a specific ESXi host lose connectivity intermittently. The VMs are on a distributed switch port group. The administrator finds that the Uplink 1 on that host is down. What should the administrator do first?

A vSphere administrator notices that after adding a new ESXi host to a vSphere Distributed Switch (vDS), some VMs on existing hosts lose network connectivity intermittently. What is the most likely cause?

Refer to the exhibit. A virtual machine on the VM Network is experiencing intermittent connectivity. The administrator notices that vmnic0 is saturated. Which action would improve performance without causing a single point of failure?

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?

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?

A company has a single ESXi host with a standard switch. The administrator creates a new port group for a DMZ network and assigns a VM to it. The VM cannot ping the default gateway. The physical switch port is configured as a trunk with VLAN 100 allowed. The port group VLAN ID is set to 100. The physical NIC is connected to the switch port and shows link up. What should the administrator do to resolve the issue?

Refer to the exhibit. An administrator configured beacon probing for network failure detection on the Production port group. However, virtual machines are experiencing intermittent connectivity. What is the most likely reason?

A network administrator needs to isolate traffic between VMs in the same VLAN on a distributed switch. Which feature should be used?

Refer to the exhibit. An administrator cannot resolve the hostname of a DNS server using the ESXi host. What is the most likely cause?

A network administrator notices that all traffic from two VMs connected to the same standard switch port group is going through the same physical uplink, causing congestion. The teaming policy is set to Route based on originating virtual port. What change should the administrator make to distribute traffic more evenly?

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?

Order the steps to perform a vMotion migration of a powered-on virtual machine.

Which two conditions must be met for a VMkernel adapter to be used for vMotion on a distributed switch? (Choose two.)

A virtual machine connected to the 'VM Network' port group is unable to obtain an IP address from the DHCP server located on the same subnet (192.168.1.0/24). The DHCP server is connected to the physical switch which is configured as an access port for VLAN 100. What is the most likely cause of the issue?

An ESXi host has two physical uplinks (vmnic0, vmnic1) connected to a distributed switch. The administrator wants to use LACP to aggregate these uplinks to a physical switch stack. Which prerequisite must be met for LACP to work with a distributed switch?

A company operates a three-node vSphere cluster for a critical application. Each ESXi host has two 10GbE physical NICs (vmnic0 and vmnic1) connected to two separate physical switches (Switch A and Switch B) for redundancy. The cluster uses a vSphere Distributed Switch (vDS) with two uplinks per host: uplink1 (vmnic0) connected to Switch A, and uplink2 (vmnic1) connected to Switch B. The teaming policy is set to 'Route based on originating virtual port' with both uplinks active. The physical switches are configured in a multi-chassis link aggregation group (MLAG) that bundles the ports from both switches into a single LAG interface. The LAG is configured with mode 'active' (802.3ad). Recently, the cluster experienced a network outage when one of the physical switch uplinks failed. The VMs on the affected host lost connectivity for several seconds before recovering. The administrator wants to prevent such outages in the future. Which action should the administrator take?

A virtual machine is configured with two vNICs connected to different standard port groups (VLAN 10 and VLAN 20). The administrator wants to use both vNICs for load balancing and failover within the VM OS. Which condition must be met on the vSwitch side?

An administrator is creating a new vSphere Standard Switch on an ESXi host. The host has two physical NICs: vmnic0 and vmnic1. The administrator wants to use vmnic0 for VM traffic and vmnic1 for management traffic. How should the administrator configure the switch?

An administrator configures a distributed switch with a single uplink on each host and a port group with VLAN 10. After connecting a VM to the port group, the VM cannot communicate with other VMs on the same VLAN but on different hosts. What is a likely cause?

Order the steps to enable vSphere HA on a cluster.

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

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?

Which TWO of the following are functions of a vSphere Distributed Switch that are not available in a vSphere Standard Switch? (Select exactly two.)

An organization has deployed a vSphere Distributed Switch (vDS) across multiple ESXi hosts. The security team requires that no virtual machine can change its MAC address to impersonate another device. Which security policy setting on the distributed port group should be configured to fulfill this requirement?

Refer to the exhibit. An engineer tries to ping the DNS server 10.0.0.1 from the management interface vmk0 but gets 'Network is unreachable'. What is the most likely cause?

Match each vSphere feature to its correct description.

A VM on a vSphere Distributed Switch is unable to receive traffic from external networks. The VM can send traffic out successfully. The VM port group has no security policies set (default). The physical switch port is configured as an access port on VLAN 100. The VM port group VLAN is set to 100. What is the most likely cause?

Which TWO conditions must be met to successfully enable vSphere Network I/O Control (NIOC) on a vSphere Distributed Switch? (Choose two.)

A vSphere administrator needs to provide network connectivity to a set of VMs that must be isolated from all other traffic on the physical network. The VMs are on the same ESXi host and require maximum throughput between them. Which vSphere networking solution should the administrator use?

Which TWO of the following are valid considerations when configuring a vSphere Distributed Switch with 10G uplinks and planning for a TCP/IP stack for vMotion? (Select exactly two.)

An administrator needs to create a distributed port group on a vSphere Distributed Switch (VDS). Which two configuration settings must be specified during creation? (Choose two.)