Practice Questions
If a secondary VM starts to significantly lag behind the primary... then what happens? tip: CPU
...then FT slows the primary by descheduling its VM CPU allocation on the Host When the secondary has caught up, the primary's CPU share is slowly increased!
By default all ports on a switch belong to VLAN. 10 100 1 2
1
Simple and lightweight layer 2 switching logic: Ethernet Frame enters the vSwitch If the destination is to an unknown MAC address 1. Drop the frame if it came from an external source 2. Switch the frame to the virtual port that owns that MAC address 3. Send the frame to a physical uplink if it came from an internal source
1. Drop the frame if it came from an external source 3. Send the frame to a physical uplink if it came from an internal source
What purposes do vmKernel ports service
1. Management 2. vMotion 3. Fault Tolerant logging 4. iSCSI storage traffic 5. NFS storage traffic
Match the term with the definition. Not all terms are used! 1. System developed by Sun Microsystems to allow File Sharing using standard TCP/IP infrastructure, Implemented on most Linux systems. 2.System developed by Microsoft to allow File Sharing between Windows computers. Reverse engineered and implemented on many Linux systems. 3.System to allow block disk access commands previously used for local storage to be implemented over TCP/IP 4. High speed optical disk access system designed to allow multiple devices to access storage SMB NFS FIBRE CHANNEL iSCI
1. NFS 2. SMB 3. iSCI 4.FIBRE CHANNEL
A datacenter is using vCenter Server (VCS) as a VM appliance running on one of the ESXi hosts in a cluster with HA enabled. The ESXi host running the VCS VM fails to a power off state. Which statement best describes what happens next? 1. The HA agent on a different ESXi host will detect VCS is no longer running and restart VCS appliance. 2. HA will fail on cluster appliance because VCS ill fail on the ESXi host 3. The VCS appliance will continue to run and can use vMotion to move itself to another ESXi host. 4. VCS cannot be installed as a VM appliance inside one of the servers it manages, it must be installed on seperate hardware.
1. The HA agent on a different ESXi host will detect VCS is no longer running and restart VCS appliance.
what is a User or Group, choose two. 1. User is for authentication (alongside a password), groups collect users together 2. Basic building block, can be from a local database, or even AD 3. Allowed action on an inventory object 4. Collection of privileges - either built in or custom 5. A role attached to an inventory object creates a permission
1. User is for authentication (alongside a password), groups collect users together 2. Basic building block, can be from a local database, or even AD
Pick the most correct answer from the 4 options below: 1. Virtual Machines can span physical machines 2. Virtual Machines cannot span physical machines 3. Physical machines determine to position of the virtual server on the network 4. Resource management needs to be managed when multiple physical machines used for virtualisation.
1. Virtual Machines can span physical machines
SAN storage files are viewed as.. 1. blocks 2. individual files
1. blocks
A virtual switch configuration supports three different ways to determine how VLANs are controlled. The main difference between the modes, being where the tags are applied: VST mode? 1. does this inside the VMkernel 2. does this at the guest operating system layer 3. does this on the external physical switch
1. does this inside the VMkernel Trunk.
Enabling FT can also reduce the performance of VMs by up to how much % 5% 10% 20% 35%
10% If the secondary VMs CPUs can't keep up with the primary, then this can reduce its performance even more.
How many phyiscal hosts can be provisioned with ESXi when using auto deploy? 10 50 100's 1000's
100's
What is the maximum of ports per vSwitch? 500 743 1016 dynamic
1016
A logging network, what is the Minimum requirement link speed? 100Mbps NIC 1Gb NIC 100 Gb NIC 1TB NIC
1Gb NIC
Minimum number of NICs for vMotion? (redundancy)
2
When does virtualization need to be enabled on the CPU. 1. 32Bit VMs 2. 64Bit VMs 3. 32 and 63Bit VMs 4 .None of the above
2. 64Bit VMs
What is an out of band network? 1. Interface from vcentre appliance which is used purely for user data not management data, 2. Interface from vcentre appliance which is used purely for management data, not for user data. 3. Interface from vcentre sever used for both user and management data
2. Interface from vcentre appliance which is used purely for management data, not for user data.
What is a characteristic of vCenter vRealize Orchestrator. Choose two. 1. Connects VMs to vCentre server 2. Provides workflow automation 3. Allows automation of tasks in the vCenter Server 4.Manages resources of VMs and ESXi hosts
2. Provides workflow automation 3. Allows automation of tasks in the vCenter Server
Simple and lightweight layer 2 switching logic: Ethernet Frame enters the vSwitch If the destination is to an known MAC address 1. Drop the frame if it came from an external source 2. Switch the frame to the virtual port that owns that MAC address
2. Switch the frame to the virtual port that owns that MAC address
A virtual switch configuration supports three different ways to determine how VLANs are controlled. The main difference between the modes, being where the tags are applied: VGT mode? 1. does this inside the VMkernel 2. does this at the guest operating system layer 3. does this on the external physical switch
2. does this at the guest operating system layer Trunk.
NAS storage files are viewed as.. 1. blocks 2. individual files
2. individual files
You have 50 VMs on an ESXi server 10 of which are web-servers, you want to make only 10 a web operate role what do you do? 1. Either assign web operator role at ESXi level 2.• Or assign web operator individually to each of the 10 web servers
2.• Or assign web operator individually to each of the 10 web servers if you assign at ESXi level it will target all VMs on host.
vSwitch Limitations, how many vSwitchs can each ESXi host have? 248 512 1024 2048
248
How many default roles does ESXi have?
3. No Access This can be used to prevent access to an object or objects in the inventory Such as a specific VM - despite having access to the ESXi host Read-Only You can see the objects within the vSphere Client inventory, but not interact with them Eg. You can see the VMs but not do anything with them Administrator Total authority, assigned using a user and group object
what is a Privilege 1. User is for authentication (alongside a password), groups collect users together 2. Basic building block, can be from a local database, or even AD 3. Allowed action on an inventory object 4. Collection of privileges - either built in or custom 5. A role attached to an inventory object creates a permission
3. Allowed action on an inventory object Eg. Powering on a VM; attaching a virtual CD to a VM etc.
What manages the VMs access to the physical hardware? 1. Command Line 2. vSwitch 3. VMKernel 4. CPU
3. VMKernel
A virtual switch configuration supports three different ways to determine how VLANs are controlled. The main difference between the modes, being where the tags are applied: EST mode? 1. does this inside the VMkernel 2. does this at the guest operating system layer 3. does this on the external physical switch
3. does this on the external physical switch Access mode.
What must a user account be assigned once it has been created? 1. permission 2. privilege 3. role
3. role
Select the true statement(s) about VMs initial configuration and machine setup: 1. Any number of cores can be supported for hardware host for ESXi 6 2. 32gb and 64gb CPUs need virtualisation enabled on 3.Minimum of 8 NIC is ideal for VMware host physical hardware 4. A maximum of 8 NICs can be used for each host ESXi host
3.Minimum of 8 NIC is ideal for VMware host physical hardware
What is the maximum amount of physical NICs that can be assigned to a vSwitch? 16 32 64 128
32
FT with VMware v6 allows up to how many CPUs in a VM? 2 4 10 25
4
what is a role? 1. User is for authentication (alongside a password), groups collect users together 2. Basic building block, can be from a local database, or even AD 3. Allowed action on an inventory object 4. Collection of privileges - either built in or custom 5. A role attached to an inventory object creates a permission
4. Collection of privileges - either built in or custom
Which of these come with VMware 1. Load Balancing 2. Load Balancing and Fault Tolerance 3. Fault Tolerance 4. Fault Tolerance + Resource Scheduling
4. Fault Tolerance + Resource Scheduling
An administrator wants to create 5 Windows Server VMs with all current updates, an anti-virus package, and an in-house software package installed in the quickest possible time. How is this done most efficiently? Note: "Customise" in the answers below means giving the server a unique name, IP address and windows license. 1. Partially install one Windows Server from CD. Abort the process before the first reboot. Clone this machine 4 times. Start all 5 machines and continue the Windows Installation on each VM, customising each VM. When the install is finished, add updates, AV and in-house software to each VM 2. Install one windows server VM from CD. Clone the VM 4 times. Run SYSPREP on the 4 cloned machines. Re-start and customise all VMs. Add updates, AV and in-house software to all VMs. 3. Install 5 windows server VMs from CD and customise each. Add updates, AV and in-house software to all VMs 4. Install one windows server VM from CD. Add updates, AV and in-house software. Run SYSPREP. Clone the VM 4 times. Start and customise all 5 machines.
4. Install one windows server VM from CD. Add updates, AV and in-house software. Run SYSPREP. Clone the VM 4 times. Start and customise all 5 machines.
There are 3 VMs running on a VMware ESXi host. VM1 is idle while VM2 and VM3 are consuming all the Physical CPU resources on the host. The following CPU Shares are allocated to the VMs: VM1 has 1000 CPU Shares VM2 has 2000 CPU Shares VM3 has 2000 CPU Shares Which statement about CPU usage best describes the result? 1. VM2 will be using all the CPU resources it needs, because it has a higher share number than VM1 2. The ESXi host will keep 1/5 of the CPU resources available and unused ready for VM1 when it needs them 3. Both VM2 and VM3 will use 2/5 of available of CPU 4. VM2 and VM2 will be using half the CPU resources each. 5. VM2 will be using 2/5 of the available CPU resources, while VM3 will be using 1/5
4. VM2 and VM2 will be using half the CPU resources each.
What is the maximum physical CPUs for hosts in ESXi 6? 1. 260 2. 480 3. 900 4. Unlimitied
480
Host logging provides a record of actions, events, errors and state information what size are the scratch partitions that get saved?
4gb created by installer
what is a permission?
5. A role attached to an inventory object creates a permission
Minimum number of NICs in total for redunancy
8
What is the vMotion port number
8000
Who many default roles are there in vCentre server? 20 5 9 12
9
What is Fault Tollerance
A secondary VM is running in sync with active and takes over if active goes down.
What is a virtual switch? and where does it live?
A software-based switch that sits in the VMkernel
What is a Content Addressable Memory (CAM) table?
A table on a switch of all known destination MAC addresses and associated port numbers
How many ports on a virtual switch 100 50 300 Dynamic
A virtual switch has a dynamically defined number of virtual ports that are available to the virtual machines and the host itself.
A vSphere Administrator has a multi-tier application deployed in a vApp. The administrator needs to rapidly deploy copies of the multi-tier application to various departmental infrastructures throughout the company. Which step should the administrator take using the vSphere Web Client to allow this? A. Export the vApp as an OVF Template B. Convert the vApp to a Template C. Clone the vApp to a OVF Template D. Add the vApp to the Catalog
A. Export the vApp as an OVF Template
Which component needs an SSL certificate? A. Update Manager B. Auto Deploy C. ESXi Dump Collector D. Network Syslog Collector
A. Update Manager
Which installation method is not available for a new deployment of ESXi 5.x? A. Update Manager installation B. Text-based interactive installation C. Scripted installation D. Auto Deploy installation
A. Update Manager installation
What can be applied on the router to provide a similar function as a firewall
Access control lists
Which port types removes VLAN tags when moving packets through the network.
Access port
What role would a user need to be to access the DCUI Direct console user interface
Admin
What user type can create custom roles with vCentre server
Admin vSphere Client: View / Administration / Roles
Select the two accounts that are necessary in ESXi: Root Backup User Admin
Admin Backup
An ESXi cluster using Automated Distributed Resource Scheduling is running two Microsoft Active Directory Domain Controllers (DCs), which provide fault-tolerant authentication for a Domain. How should DRS be configured for the best availability of the DCs?
Anti Affinty rule to keep DCs on different ESXi host
Where are CPU RAM Reservations, Limits, Shares applied?
Apply to all VMs in resource pool
In AAA, the acronym for who is allowed access is: Authorisation Authentication Accounting
Authentication
Where should the administrator edit the settings of DPM in the vSphere Web Client? A. DPM plug-in settings B. Cluster settings C. ESXi host power settings D. vCenter Service Status
B. Cluster settings
Which Single Sign-On deployment mode should an administrator use for two 5.x vCenter Servers configured with linked mode? A. Basic Single Sign-On with vCenter Server Heartbeat B. Multisite Single Sign-On C. Basic Single Sign-On D. Single Sign-On with Linked Mode
B. Multisite Single Sign-On
Where is the balloon driver installed from?
Balloon driver installed with VMware Tools
What is memory ballooning?
Balloon expands to "use" guest VM RAM ESXi Makes this available to other guest VMs
what is Storage vMotion
Change "Live" Storage Location VM Continues to run
What is NIC teaming
Connect multiple physical NICs to a single virtual switch Provides automatic load distribution Source MAC Hash Source and destination IP hash
What are the two options for fully automated? tip: Con and Agg
Conservative: Only migrate VMs if there is a big improvement to be made Aggressive: Migrate even if there is a small improvement
Which VMware Tools upgrade method minimizes the need for scheduled downtime? A. Use vCenter Server to select and upgrade virtual machines B. Use vSphere PowerCLI and create a script to upgrade the virtual machines C. Use Update Manager to perform an orchestrated upgrade of virtual machines D. Configure the virtual machines to check for and install updates at each reboot cycle
D. Configure the virtual machines to check for and install updates at each reboot cycle
Which of the following is a suitable method of load balancing for a group of web servers delivering identical static pages for a single company? DNS Round Robin Multiple DNS FQDNs Multiple ethernet cards on each router Enable hyperthreading
DNS Round Robin
What is vNetwork Distributed Switch (vDS) tip: similar the vcentre server
Delivers centralized management to vSwitches across multiple hosts
If vCentre server is not available what method would you connect?
Directly to individual ESXi host
What would be an examply of a good Anti Affinity Rule
Domain controllers being kept on different ESXi hosts so the system has redundancy.
What is resource utilization?
Dynamic distribution of resource
What is DRS Power Saving : DPM
ESXi OS manages CPU State, can reduce power consumption Can conserve power on a single ESXi Host Power "off" unneeded hosts As Demand increases Hosts are powered on DRS uses vMotion to redistribute VMs "Greener" IT
Select the type 1 hypervisor in which linux is needed as a service console, from the list below: ESXi vShphere 5.0 Xen ESXi v6 ESXi vSphere 4.5
ESXi vSphere 4.5
What are Elastic ports tip: like ballooning
Elastic means that the virtual switch can manage the quantity of virtual ports automatically - creating and deleting them as needed - without user intervention.
A bare metal hypervisor allows you to create low level drivers for network cards, in order to install multiple variants of networking capabilities into the Operating System installed. TRUE/FALSE
False
Only six physical machines can be consolidated into a single virtual machine hypervisor. This is due to the restrictions imposed on a hypervisor by the switching infrastructure. TRUE/FALSE
False
What are remote storage options, choose 3 SATA Fibre Channel NFS iSCSI SAS
Fibre Channel NFS iSCSI
Which is shared storage? choose 4 Fibre Channel SAS SATA iSCSI NFS SMB SCSI
Fibre Channel iSCSI NFS SMB
What can we use to control access to management interfaces.
Firewall
What is resource allocation
Fixed amount Use the resource allocation settings (shares, reservation, and limit) to determine the amount of CPU, memory, and storage resources provided for a virtual machine.
What is the setting for DRS moves VM to "best" host Manual setting Semi-Automated Fully Automated
Fully Automated
How are Local VLANs set ouy
Hosts are assigned to VLANs based on their location, such as a floor in a building Requires routing to share resources between VLANs
An administrator is running the following servers as VMs in an ESXi cluster: DNS DHCP Active Directory Web (HTTP and HTTPS) Each of the servers is licensed separately (no Volume License is available). Improved web performance is required, and the administrator decides to create two more Web Server virtual machines for load balancing. The Web Server gets its IP address from DHCP. The administrator copies the Web Server Virtual Disk to create two more identical instances of the Web Server. 1. Certs for HTTPS 2. Windows Licences 3. Computer Names 4. IP addresses 5. DNS Domain names
IP addresses
If a VM has memory but doesn't use it, it "costs" more (in shares) This is called? tip: IMT
Idle memory tax
What does HA do if ESXi host is down?
If a host is down, VMs are restarted on another host
With active directory integration can you manage Individual accounts.. Centrally Individually
Individually
What is vLockstep Interval in real time is affected by:
Input to Primary Bandwidth and Latency of logging link Performance of Secondary
What does a virtual switch connect? Tip, NICS and vNIC
It might connect one or more pNICs (physical) in the host to the vNICs in VMs, or maybe none at all.
The maximum amount of a resource that a guest is allowed to use Limits Reservations Shares
Limits
Are host logs local or central to ESXi hosts
Local to each ESXi host
VMware Fault Tolerance is implemented on 10 VMs in a VMware Cluster using 3 ESXi Physical Hosts with adequate CPU and RAM Installed. The ESXi Physical hosts are connected with a dedicated 1Gbps switch used only for the logging network. The VMs using Fault Tolerance run slowly compared to VMs without Fault Tolerance. What is the most likely reason or solution? Choose the best answer.
Logging network is congested 1GBS is not sufficent for 10 VMs . Secondary machine isnt sync and slowing down primary.
What do the two FT VMs share? MAC Address Routing Information IP Shared Storage CAM Tables
MAC IP Storage
There are two ways to assign VLANs, statically by port and dynamically by... 1. IP address 2 .MAC address or username
MAC address or username
What is MACOF
MACOF can flood a switch with many spurious MAC addresses This overloads the CAM table, causing the default switch setup to broadcast all frames to every port
What is Distributed Resource Scheduler
Manages Resources Automatically
What is the setting for Admin chooses host at VM StartuP in DRS Manual setting Semi-Automated Fully Automated
Manual setting
What is Transparent page sharing? Many instances of identical OS running
Many RAM pages are identical Keep only one copy! Less helpful with 64-bit Operating Systems - more page variation!
What is vMotion
Moves a running VM from one ESXi host to another Not a High Availability Feature!
Do you need a licence to run the Linux based vCenter Server Appliance?
No
Is the vpxuser access by humans
No No SSH access
Does the secondary VM perform write output?
No Only the Primary machine performs Writes / Output
Does a vSwitch affect MAC addresses for nodes outside the ESXi host
No local to own host
By default is SSH enabled?
No Default is disbaled
Is vCentre server needed to run HA
No vCenter Server is not needed to run HA
What are the Standalone ESXi only built in roles No Access Read Only Administrator Root Read and Write
No Access Read Only Administrator
What are the Standalone ESXi only built in roles, pick 3. No Access Read Only Administrator Root Read and Write
No Access Read Only Administrator
Can default roles be modified?
No, need to create custom roles
Could you use resource pools to do this job?
No, resource pools are intended to control resource allocation and consumption - not organise VMs
Which of the following VMware technologies allows for load balancing between two currently running Web Server VMs? VMware HA VMware FT VMware vMotion None of these are for load balancing
None of these are for load balancing
Do AD Domain admins get accerss to SSO?
Not anymore
What are the two back end database methods supported?
Oracle and Microsoft Server SQL
User, group or privilege is assigned to a...
Permission
What could you apply to the folder? Privileges Permissions Roles
Permissions
Select the correct basic components of the security model for ESXi / vCenter Server: Privilege Permission Profile Read-only
Privilege Permission
What would happen if the virtual network was set to reject.
Promiscuous mode MAC Address changes Forged transmits would all be applied
What is needed on the new ESXi host when a VM is moved?
RAM CPU Disk Network
The amount of a resource that is always available for a guest Limits Reservations Shares
Reservations
Resource Allocation Mechanisms
Reservations, limits Resource Pools
What is a VM resource pool?
Resource pools can be grouped into hierarchies and used to hierarchically partition available CPU and memory
What is assigned to users and groups?
Roles
What are sample roles? 1. Roles formed from templates of default roles and customized. 2. Roles with limited features 3. Testing Roles 4. Roles which are not able to be used in live environment.
Roles formed from templates of default roles and customized.
Anti-Affinity Rules are?
Rules that keep VMs apart on different ESXi hosts
Affinity Rules are?
Rules that keep VMs together on same ESXi host
Which are local storage? choose 3 Fibre Channel SAS SATA iSCSI NFS SMB SCSI
SCSI SATA SAS
What encryption does vpxuser use? MD-5 SSH SHA1
SHA1
What does VSS: Volume Shadow Storage do? choose 2 Save copies of modified blocks Backup ESXi hosts "Snapshot" of VM Store data in secure location
Save copies of modified blocks "Snapshot" of VM
What is the setting for DRS decides on start, leaves VM there in DRS Manual setting Semi-Automated Fully Automated
Semi-Automated
What is the best type of Storage Architecture used for ESXi Local Shared
Shared Fibre Channel, Fibre Channel over Ethernet, iSCSI and NFS based are all supported
Which of the following technologies is used for Shared Storage, and which for Local Storage? (Match the technology with the use) Fibre Channel iSCSI SAS SATA
Shared Fibre Channel iSCSI Local SAS SATA
The relative proportion of a resource that a guest is allocated. Shares establish priority when there is resource contention. Limits Reservations Shares
Shares
SAN stands for?
Storage Area Network
What is thick provisioning? 1. TP operates by allocating disk storage space in a flexible manner among multiple users, based on the minimum space required by each user at any given time. 2. TP is a type of storage allocation in which the amount of storage capacity on a disk is pre-allocated on physical storage at the time the disk is created.
TP is a type of storage allocation in which the amount of storage capacity on a disk is pre-allocated on physical storage at the time the disk is created.
What is thin provisioning? 1. TP operates by allocating disk storage space in a flexible manner among multiple users, based on the minimum space required by each user at any given time. 2. TP is a type of storage allocation in which the amount of storage capacity on a disk is pre-allocated on physical storage at the time the disk is created.
TP operates by allocating disk storage space in a flexible manner among multiple users, based on the minimum space required by each user at any given time.
What is vLockstep interval? tip: lag
The lag between the two VMs is known as the vLockstep interval!
what is Virtual Network Interface Card (vNIC)?
This is the virtual machine's interface to the network
what is Virtual Kernel Network Interface Card (vmkNIC)
This is vSphere hypervisor's interface to the network which is used for Mgmt, NFS, iSCSI, vMotion
Which port types keeps VLAN tags intact when moving packets through the network.
Trunk port
Storage DRS
Use storage VMotion to balance load on Datastore Clusters Placement based on Free Space and I/O Load
How are sensitive routers, switches and hosts notified which VLAN the packet belongs to? Packet header VLAN Tagging VLAN Marking
VLAN Tagging
What are vmKernel ports
VMkernel ports are special ports that connect the vSphere host's vmkernel to the vswitch.
What do you need to patch your ESXi servers automatically? vcentre server VMware Update Manager vCenter Orchestrator
VMware Update Manager
What Allows VMs to use multiple processors. tip: VSM
Virtual Symmetric Multiprocessing
What would be an examply of a good Affinity Rule
Web server Database server for retail
Would you ever want Hypervisor to swap RAM to disk? Hypervisor Swapping
When there is no alternative, Hypervisor can swap RAM to disk Thousands of times slower than RAM! (See next slide) Avoid it!
Can VMs be in the same VLAN regardless of their psychical location?
Yes
Can virtual machines acquire their resources, CPU, RAM, storage from different ESXi hosts?
Yes
Can you setup the virtual networks in a vSphere environment
Yes
Is it default to propagate child objects?
Yes
Will assigning permissions at ESXi standalone host level target all VMs within the host?
Yes
An ESXi server has 20GB RAM can you run 5VM's with 5GB each?
Yes Memory "overcommit"
Which End-to-END VLANs are VLAN members on different floors and switches?
Yes Troubleshooting can be problematic: many switches can carry traffic for a specific VLAN, broadcasts can move across many switches
Does vLockstep guarantee the states of both VMs are identical (active & secondary)
Yes vLockstep accomplishes this by having both VMs execute identical sequences of x86 instructions
Can you save pages to RAM instead of disk?
Yes, Memory compression Compress RAM pages, to keep more pages in RAM Compression/decompression is quicker than disk paging!
Could you place the 10 VM's into a folder?
Yes, that would collect them all together.
What is the built in use for single sign on? SSO [email protected] [email protected]
A vSwitch with no physical NIC attached to it creates a?
an internal, and isolated communication, only between VMs that exist on the same host (Private vSwitch)
Are private VLANs available on vSwitch? Yes No, you must enable this feature available on the Distributed vSwitch
available on the Distributed vSwitch
Virtual Local Area Networks what does a VLAN seperate?
broadcast domains
what does this command do? vicfg-user --server server.domain.com --username root --entity group --group GroupName --operation add
creates group
what does this command do? vicfg-user --server server.domain.com --username root --entity user --login LoginName --operation add
creates user account
What does VM Monitoring (with VMware Tools installed) do?
enables a restart after a BSOD (Blue Screen of Death)
true or false Shares always apply
false Shares only have an effect when there is contention
True or false ESXi ran both the virtualization kernel (the VMkernel) along with a Console Operating System (COS).
false VMware shelved the classic ESX architecture and now only offers the slim, VMkernel-only version of ESXi
What is Hyper-Threading
is a technology used by some Intel microprocessor s that allows a single microprocessor to act like two separate processors to the operating system and the application program s that use it. It is a feature of Intel's IA-32 processor architecture.
What happens if a frame it trying to reach a MAC address on a nother VLAN
layer 3 switching is required and the frame will be sent to the physical uplink
what is vMA? 1. virtual maintenance 2. linux based management console appliance 3. windows based management console appliance 4. virtual mapping
linux based management console appliance
If you boot from a SAN - or remote disk, the log is saved in ESXi memory what happens when it is restarted. nothing keeps logs loses logs
loses logs
How can you solve the problem of losing logs if booting from SAN or remote disk? 1. setup central storage 2. enable host logs to be saved locally when booting from SAN 3. syslog server
syslog server
What happens to a frame when the switch searches the CAM table and Match found, and on the same port the frame arrived on
the frame is dropped.
What happens to a frame when the switch searches the CAM table and "no match" it found
the switch floods the frame out of all the other ports.
What happens to a frame when the switch searches the CAM table and Match found, and on a port other than the port the frame arrived on
the switch forwards the frame out of the corresponding port.
what does the command "chmod644/etc/vmware/firewall/service.xml " do? to backup the config file to display the current firewall rules to allow editing of the file
to allow editing of the file
what does the command "cp/etc/vmware/firewall/service.xml/etc/vmware/firewall/service.xml.bak" do? to allow editing of the file to display the current firewall rules to backup the config file
to backup the config file
what does " chmod 444 /etc/vmware/firewall/service.xml " do? to change permissions back to original to update the firewall configuration
to change permissions back to original
what does the command "esxcli network firewall ruleset list" do... to backup the config file to display the current firewall rules to allow editing of the file
to display the current firewall rules
what does the command "esxcli network firewall refresh" do? to change permissions back to original to update the firewall configuration
to update the firewall configuration
True or false If FT is widely used more bandwidth will be needed between the Primary and Secondary
true
True or false A vSwitch can only perform layer 2 switching.
true
true or false But default security policy prevents promiscuous mode to capture traffic
true
true or false Reservations and Limits always apply
true
true or false A virtual machine always accesses the network through a port group.
true Virtual machine port group: Access to VM networks (either internal or external VMs): Each virtual machine port group has its own network configuration - assigned a different VLAN.
What provides a centralized management platform for ESXi hosts and virtual machines?
vCentre Server
What technolgy does FT use? vMotion vCentre Orchestra vLockstep
vLockstep
Do we have any way of managing Utilization?
vRealize Operations Manager
How can you add more users with root privileges? Choose two vSphere client Directly on ESXi host Command Line OVF file
vSphere client Command Line
What is the name of the account that vcentre server uses to communicate with the ESXi hosts? Admin Root Vpxuser
vpxuser vCenter Server manages ESXi hosts, by creating "tasks"
