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Virtual Infrastructure > Switches and network > Flashcards

Switches and network Flashcards

1
Q

How to set up a new virtual switch?

A

In networking under the host- add new network

  • add vm port group
  • now new vswitch or default
  • can select an uplink adapter to communicate outside the host
  • assign a nic adapter
  • add name of port group (ensure its the same, can assign a vlan id to port group)
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2
Q

How to move vm to production port group

A
  • go to vms and template (right click to settings)
  • change network adapter to production port group
  • In cmd on vm: run ipconfig /renew (maybe release)
  • we were on nat, now connected on a bridged network*
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3
Q

How do you expand a VMFS Datastore to Consume Unused Space on a LUN?

A

Right-click VMFS-2 datastore and select Increase Datastore Capacity.
Use “Free Space 3.00 GB” to expand the datastore from the Partition configuration drop-down menu

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4
Q

How do you extend a VMFS Datastore?

A

In the left Navigator pane, select the first VMFS-2 datastore.
Click the Configure tab.
Ensure that General is selected and click Increase

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5
Q

What do you change to the ISCSI name and Alias when configuring storage adapters?

A

ISCSI name: remove the numbers after esxi 1
iqn:1998-01.com.vmware.ESXI1
Alias:n/a

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6
Q

How do you network port bind?

A

have initiated now need to bound to a port
Add vmkernal adapter
and select ISCSI adapter
add new targets: specify ip or ISCSI name
- leave as default port
-re scan storage to show targets

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7
Q

How to add ISCSI software adapter?

A

on vm- In storage add new “software ISCSI adapter”
- scroll down on adapters and select new ISCSI adapter
Set IQN Value:
- ie: ISCSI name and alias- remove the numbers after esxi 1

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8
Q

How to create a new NAS data store?

A 
make a new switch then
In storage go to related objects and then data stores
Add datastore icon
name it- 
server is ip address of NFS volume
Folder is /nfs volume
- click hosts to connect to
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9
Q

What does ISCSI Stand for?

A

iSCSI (Internet Small Computer Systems Interface)

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10
Q

iSCSI provides all of the necessary components for the construction of a _______ ______ ________

A

Storage Area Network

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11
Q

A client in an iSCSI storage network is called the iSCSI ___________?

A

Initiator (Node)

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12
Q

What is an ISCSI Initiator?

A

This iSCSI Initiator can connect to a server (the iSCSI Target). In doing so, the iSCSI Initiator sends SCSI commands to the iSCSI Target.

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13
Q

What are SCSI commands?

A

SCSI commands are packaged in IP packets to send to the ISCSI Target

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14
Q

What are ISCSI Targets?

A

A server in an iSCSI storage network

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15
Q

What do ISCSI Targets do?

A

iSCSI Target can provide one or more “LUN”’s (logical unit number)

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16
Q

What are two different forms of ISCSI targets?

A
  • as hardware as iSCSI Storage Arrays

- as Software as iSCSI Target Software for installation on a standard server:

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17
Q

Under iSCSI, there are two types of sessions: What are they?

A

Normal operational session: which involves an unlimited session.
Discovery-session: this type of session serves only for target discovery. The iSCSI Target may permit Send Targets text requests in such a session.

18
Q

Traffic shaping is configured on a _____ _____ basis, and provides _______ controls on a per-VM basis

A

port group

Bandwidth

19
Q

Virtual switches can be protected by NIC failures using _____ _______detection beacon probing

A

link state

20
Q

How does NIC teaming balance traffic differently?

A

Originating port ID is based on virtual switch port that a vm connects to
Source mac hashing is based on source MAC address
IP hashing is based on source and destination ip

21
Q

What are forged transmits?

A

allows MAC spoofing for outbound traffic

22
Q

What are MAC address changes

A

Allows MAC spoofing for inbound traffic

23
Q

What is promiscuous mode?

A

allow sniffing for all traffic on a virtual switch

24
Q

Security setting can be configured and the virtual ____ or ____ _____ level

A

Switch or port group level

25
Q

How does information travel in virtual networking? (4 steps)

A

vm ->hypervisor -> vSphere standard switch ->physical switch

if internal will be routed by vSphere switch

26
Q

How does storage virtualization travel? 3 steps

A

vm -> hypervisor -> then to either:

- memory, cpu, or storage adapter to the datastore)

27
Q

What are features that require vSphere to function?

A 
vMotion
Storage vMotion
High availability
Fault Tolerance
Distributed Resource Scheduler (DRS)
etc
28
Q

What are the two virtual switch connection types?

A

virtual machine port groups
vmkernel port: for ip storage, high availability, fault tolerance etc
- for the esxi management network

29
Q

distributed switch functions as a single virtual switch across all associated hosts. This switch enables virtual machines to?

A

maintain consistent network configuration as they migrate across multiple hosts.

30
Q

A distributed switch is configured in VMware vCenter Server™ at the ____ ______ level

A

data center

31
Q

A ____ team provides automatic distribution of packets and failover.

A

NIC

32
Q

The ESXi host shapes only outbound traffic by establishing parameters for three traffic characteristics, which are?

A

average bandwidth
peak bandwidth
burst size

33
Q

What is a Default TCP/IP stack?

A

Provides networking support for the management traffic between vCenter Server and ESXi hosts and for system traffic such as vSphere vMotion, IP storage, and vSphere Fault Tolerance.

34
Q

What is a vMotion TCP/IP stack?

A

Supports the traffic for live migration of virtual machines. Use the vMotion TCP/IP stack to provide better isolation for the vSphere vMotion traffic.

35
Q

What is a Provisioning TCP/IP stack?

A

Supports the traffic for virtual machine cold migration, cloning, and snapshot creation. You can use the provisioning TPC/IP stack to handle NFC traffic during long-distance vSphere vMotion migration. VMkernel adapters configured with the provisioning TCP/IP stack handle the traffic from cloning the virtual disks of the migrated virtual machines in long-distance vSphere vMotion. By using the provisioning TCP/IP stack, you can isolate the traffic from the cloning operations on a separate gateway

36
Q

What is NAS storage?

A

Storage shared over standard TCP/IP networks at the file system level.
NAS storage is used to hold NFS datastores.
The NFS protocol does not support SCSI commands.

37
Q

VMFS is a ______ file system that allows ________ ESXi hosts to read and write to the same storage device simultaneously

A

clustered,

multiple

38
Q

The clustered file system enables unique, virtualization-based services, including:

A
  • Migration of running virtual machines from one ESXi host to another without downtime
  • Automatic restarting of a failed virtual machine on a separate ESXi host
  • Clustering of virtual machines across different physical servers
39
Q

_____ is a specialized storage device that connects to a network and can provide file access services to ESXi hosts.

A

NAS

40
Q

______ enables you to store virtual machine data directly on a LUN.

A

RDM- raw device mapping

The mapping file is stored on a VMFS datastore that points to the raw LUN.

41
Q

Virtual volumes introduce a new storage paradigm that is designed to address next gen requirements for storage in the SDDC.
These provide?

A

Lower cost of storage
reduced storage management overhead
greater scalability
better response to data access and analytical requirements

42
Q

For each ESXi host to access an NFS datastore over the network, a VMkernel port must be configured on a ?

A

virtual switch.

Virtual Infrastructure (10 decks)

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