1
.Which Information can the administrator use to identify ISCSI nodes?
Options are:
A.
MAC address
B.
IQN
C.
WWN
D.
LUN ID
Ans: B. IQN
Reason is: IQN is
an abbreviation for iSCSI qualified Name. IQN is used to identify iSCSI nodes
in SAN networks, same as MAC addresses used to identify network devices in
Ethernet networks.
Similar to IQN, WWN is used to identify FC/FCoE devices in SAN
networks.
2. An Administrator needs to prevent 2 virtual machines from
running on the same host. Which DRS policy should be applied?
Options are:
A.
VM-to-VM affinity
B.
VM-to-host affinity
C.
VM-to-VM anti-affinity
D.
VM-to-host anti-affinity
Ans: VM-to-VM anti-affinity
- Reason is:
DRS Anti Affinity rules are used to prevent
VMs running on the same host whereas Affinity rules are used to keep VMs
together on the same host at any time. VM-to-host affinity rules are used
to bind VM to specific hosts where VM-to-VM rules are about 2 VMs binding.
3. An Administrator is planning a new vsphere deployment using
shared storage. The solution must be supported.
vMotion
SvMotion
RDM Disks
Options are:
A.
CIFS
B.
iSCSI
C.
NFS
D.
vSAN
Ans: B. iSCSI
Reason is:
iSCSI, NFS and vSAN, all three storage supports vMotion and storage vMotion
feature. But only iSCSI is the block level storage which supports RDM disks.
CIFS is file sharing protocols used for windows operating systems.
CIFS and NFS are file sharing protocols and vSAN is object based
storage.
4. Which vSphere 6.X feature automatically distributes resources
among the virtual machines during contention?
Options are:
A.
Storage vMotion
B.
vSphere vMotion
C.
DPM
D.
DRS
Ans : DRS
Reason is: DRS
stands for Distributed Resource Scheduler. DRS is a vSphere cluster level
feature which provides resource management capabilities like Load balancing and
virtual machine placement. DRS always strives to keep your VMs happy and
allocate required compute resources to run VMs efficiently.
Storage vMotion -: Use to change underline Datastore of a VM.
vSphere vMotion-: Use to change underline host of a VM
DPM-: DPM is used for better power management of a VM.
5. Which vSphere 6.X feature enables you to mitigate the effect of
storage latency during peak load periods in a virtualized data center?
Options are:
A.
NFS
B.
iSCSI
C.
NIOS
D.
SIOC
Ans: SIOC
Reason is: SIOC stands for Storage IO
control
The
purpose of SIOC is to address the “Noisy Neighbor” problem where low priority
VM impact high priority VMs. SIOC provides I/O prioritization of virtual
machines running on shared storage. SIOC automatically throttles a virtual
machine I/O bandwidth when latency threshold is exceeded.
6. What
are two features of vSphere 6.x that help address the availability challenges
any organization faces?
Options are:
A.
Host profiles
B.
VM templates
C.
High availability
D.
Fault tolerance
Ans is:
High Availability
Fault
tolerance
Reason is: High
Availability or HA is one of the widely used vSphere cluster features to
improve application availability. In the event of host failure, HA
automatically detects the failure and evacuates VMs from the failure host and
restarts it back on the available node of the cluster. By default, vSphere HA
failure detection time is 15 sec.
vSphere
Fault Tolerance or FT is another vSphere cluster feature which provides
continuous availability to virtual machines –eliminating downtime and
disruption- even in the event of a complete host failure. FT creates an exact
replica of virtual machine to another host that can take over at the time of
failure. FT provides ZERO DOWNTIME.
7.
Which VLAN configuration requires physical switch connectivity to be defined as
an access port?
Options are:
A.
Private vLAN
B.
External switch tagging
C.
Virtual switch tagging
D.
Virtual guest tagging
Ans is: External Switch tagging
Reason is: In external switch tagging, vLAN tagging happens at physical
switch level, because of which switch ports are configured as access ports.
Whereas in VST and VGT, physical switch ports need to be configured as Trunk
ports because packets are tagged at virtual switch level or guest OS level.
8. Which two network failure detection options are available when
using a vsphere standard switch?
Options are:
A.
Fixed with preferred path
B.
Link status only
C.
Beacon probing
D.
Most recently used.
Ans are:
B. Link status only
C. Beacon probing
Reason why:
Link status only algorithm can detect immediate link failure for ex. NIC Down,
Switch port Disable/Block, Switch Reboot etc.
Beacon probing Algorithm can detect upstream link and switch
failures as well. It sends and listens for beacon probe packets in all physical
NICs in a team.
9. An
Administrator is migrating a powered on virtual machine. Which option should be
selected to perform storage vMotion of the VM?
Options are:
A.
Change storage only
B.
Change Compute resource only
C.
Change both compute resource and
storage
D.
All of the above
Ans is:
Change storage only
Reason is: Storage vMotion is used to migrate
virtual machine disk files from one Datastore to another with NO downtime for
VM or No service disruption for end users.
SvMotion
is used for storage maintenance activity or redistributing virtual machine
disks to different storage volumes to balance capacity or improve performance.
10. Why
would a vSphere administrator configure resource “SHARES” for a virtual
machine?
Options are:
A.
To prioritize access to a resource
during contention
B.
To guarantee access to a resource
during contention
C.
To prioritize access to a resource at
all times
D.
To guarantee access to a resource at
all times
Ans
is:
A.
To prioritize access to a resource
during contention
Reason is: Shares specify the relative priority
of a virtual machine. If a virtual machine has twice as many shares of resource
as another vm. It is entitled to consume twice as much of that resource.
Shares
prioritize cluster resource allocation only when available capacity is not able
to meet the demands of resource consumers.
11.
What two files are created when the TAKE SNAPSHOT operation is executed?
Options are:
A.
*.delta.vmdk
B.
*.nvram
C.
*.vmss
D.
*.vmsn
Ans are:
*.delta.vmdk
*.vmsn
Reason is:
A VMware Snapshot is a copy of the virtual machine’s disk file and memory state
at any given point of time.
*.delta.vmdk
File represents the difference between the current state of the
virtual disk and the state that existed at the time that the previous snapshot
was taken.
