WorksheetsCloud Computing
Total questions: 100
Worksheet time: 42mins
Which of the following services offered by HUAWEI CLOUD (public cloud) fails into the category of SaaS services?
Object Storage Service (OBS)
Elastic Cloud Server (ECS)
Facial Recognition
Elastic Volume Services
In OpenStack, Ceilometer provides charging capabilities.
True
False
On Huawei FusionCompute, a management IP address must be configured for each DVS to facilitate unified management.
True
False
The measurable service feature of cloud computing refers to charging based on time and usage.
True
False
A Docker image is a key component of Docker. It is used to create a Docker container. It can only be read and cannot be modified directly.
True
False
The user cloud desktop cannot access the Internet normally. It must be that the north-south traffic has failed.
True
False
Hybrid cloud is a deployment mode that integrates features of the public cloud and private cloud. The industry cloud is a form of hybrid cloud.
True
False
After the disks in an array form a RAID group, the server connected to the disk array cannot directly access the RAID group. Therefore, you need to divide the disk array into logical LUNs before allocating them to the server
True
False
When creating a port group on FusionCompute, set VLAN ID to 10. Which of the following statements is incorrect?
The system will change the tag of data frames with a non-VLAN-10 tag that pass through the port group to VLAN 10 and then forward the data frames.
The system will discard the data frames with a tag other than VLAN 10 that pass through the port group.
The system will untag the data frames with the VLAN 10 tag that pass through the port group and then forward the data frames.
The system will add the VLAN 10 tag to the data frames without a VLAN tag that pass through the port group and then forward the data frames.
When creating a port group on FusionCompute, set VLAN ID to 0. Which of the following statements is true?
Do not modify the data packets that pass through the port group.
Allows only data packets with VLAN 0 labels to pass through the local port group.
Allow 0 packets with VLAN tags to pass through the local port group.
Set the VLAN tag of the packets that pass through the port group to 0.
On Huawei FusionCompute, you need to modify a disk of a VM. The following operations can be performed on ( ):
Change the disk status from Available to Unavailable.
Change the disk configuration mode from thin to common.
Change the disk capacity from 80 GB to 8 GB.
Change the disk mode from "Dependent" to "Independent & persistent"
In the development history of the Internet, which of the following key milestone events is not related to the emergence and development of cloud computing?
Reconciliation between American network music service providers and media companies
www open to the public
The University of California, Los Angeles, uses computers to send "lo" to another calculation at the Stanford Institute.
TCP/IP protocol standard establishment
Which of the following statements about the FusionCompute cluster is correct?
All VMs in the cluster can share one MAC address.
A complete cluster should contain computing, storage, and network resources.
The cluster cannot be deleted when it is created.
A cluster can have only one type of data store.
Which of the following technologies can be used to describe "Birds of a feather flock together"?
Security group
HA
VLAN
Snapshot
Which of the following modules is responsible for providing persistent block storage in the OpenStack solution?
Cinder
Nova
Packet
Glance
Which of the following technologies on the switch can improve the link rate?
Virtual LAN-Area Network
Virtual eXtensible Local Area Network
Lightweight Directory Access Protocol
Link Aggregation Control Protocol
Which of the following statements about the relationship between VRM and CNA is correct?
Restart the CNA host on the Portal page provided by the VRM.
The VRM can be installed only after the CNA is installed.
CNA must be a Huawei server
VRM is a VM running on the CNA.
Which of the following statements about creating a VM template is incorrect?
Converting a snapshot into a template
Clone the template as a template.
The VM is converted to a template.
Clone a VM as a template.
The KVM virtualization architecture includes the KVM module, QEMU, and Libvirt. Which of the following statements about these modules is false?
QEMU is responsible for I/O operation simulation.
KVM+QEMU can form a virtualization solution.
Libvirt+QEMU can form a virtualization solution.
KVM module is responsible for creating vCPUs and allocating virtual memory
Which device in the physical network is capable of routing and forwarding?
Hub
Layer 2 switch
Router
Physical server NIC
Features of virtualization include partitioning, isolation, encapsulation and standalone
True
False
In Huawei FusionCompute, DRS rules do not take effect for virtual machines bound to USB devices.
True
False
For FusionCompute, the incorrect description of the hardware of the bare device is ()
Disks mapped using raw devices perform best
The operating system is recommended to be installed on a disk that uses the raw device mapping function.
A data store using raw device mapping intelligently corresponds to a LUN on the SAN storage
A data store using raw device mapping can only correspond to one disk
The following Qos description about CPU and memory resources is incorrect.
Memory resources QOS is used to ensure that business-critical virtual machines can get sufficient memory resources
CPU shares and CPU reservations work only when each virtual machine competes for computing
resources
The CPU QoS of the virtual machine is used to ensure that the computing resources of the virtual machine are reasonably allocated
Memory resource QoS can only be used after the memory reuse switch is enabled
In Huawei FusionCompute, a virtual machine can have multiple virtual network adapters.
True
False
In Huawei FusionCompute, the following can only be used as non-virtualized storage: ()
NAS
FusionStorage
local disk
SAN
Set the VLAN ID of the port group to 10 in Huawei FusionCompute (multi-selection)
Untagged the data frame with VLAN 10 tag passing the port group and forwarded it
Data frames passing the port group with a VLAN 10 tag are re-labeled with a VLAN ID and then
forwarded.
Drop data frames passing the port group with a non-VLAN 10 tag
VLAN 10 tagged data frames passing through this port group are forwarded
The description of the relationship between Host Machine and Guest Machine is correct (multiple choice)
After using virtualization technology, one guest machine can use the resources of multiple host machines at the same time.
After using virtualization technology, a guest machine can only run on the host machine that created it
After using virtualization technology, a Host Machine can only run one Hypervisor
After using virtualization technology, multiple guest machines can run on one host machine
With the "Internet" being valued and the rise of big data and cloud computing, related technologies have entered like mushrooms
In your vision, one of the most widely used and valued is Docker. The following incorrect statement about Docker is
Docker can package the underlying environment of applications to ensure that applications can still run normally after migration
Docker needs to create a virtual layer, virtual operating system, etc. on the host or host operating system
Docker launches faster than other virtual machine technologies
Docker runs with containers, which are running instances created from Image
Cloud computing is the product of the development of the Internet and computing technology, so cloud computing must be inseparable from the network
True
False
Which of the following requirements can be fulfilled by Huawei FusionCompute DRS
Windows virtual machine automatically restarts after a blue screen
A host in the cluster is unavailable. The virtual machines running on this host are automatically migrated to the odd host.
Require a virtual machine to run on a specific host
When the virtual machine configuration does not meet business needs, the management system automatically increases CPU resources for the virtual machine
What's incorrect in NUMA's description is ()
Guest NUMA is to identify the Guest OS and its internal applications by presenting the NUMA structure to the virtual machine. NUMA structure to achieve the purpose of improving application performance
NUMA technology makes CPU access similar to the speed of memory in Node and the speed of access to memory in other Nodes
Host NUMA mainly provides a CPU load balancing mechanism to resolve VM performance bottlenecks caused by imbalanced CPU resource allocation.
Host NUMA guarantees VM access to local physical memory, reduces memory access latency, and can improve VM performance
In FusionCompute, the QoS parameters that can be set for the virtual machine do not include:
Graphics Processing Units
Disk IOPS
Memory
Network
In computing virtualization, the operating system running in a virtual machine is called Host OS.
True
False
In Huawei Fusion Compute, the following incorrect description of memory reuse is
The administrator can enable or disable the memory reuse function at any time.
After the memory reuse function is turned off, the internal sum of all virtual machines is less than or equal to the total available physical memory
Using memory reuse can degrade virtual machine performance
Turning off memory reuse requires that the memory reuse rate of all hosts in the cluster is less than or equal to 100%
RAID 6 on the basis of enhanced RAID 5 disk fault tolerance, can allow two disk failures, but not less than the number of disks required 4
True
False
The following description of KVM and Xen is correct (multi-select)
Xen virtual machines can be converted into KVM virtual machines
Domain 0 and Domain U are concepts in KVM
KVM and Xen are both open source hypervisors
KVM and Xen can run in the same Host OS
The following options are characteristic of the era of cloud computing 1.0 (multiple choices)
Agile application development and life cycle management
Focus on virtualization products
Standardization and automation of resource services
Use virtualization technology to improve resource utilization
In Huawei FusionCompute, users log in to a virtual machine using VNC and find that they cannot operate
normally and are stuck (such as being unable to open files). The most likely cause of this failure is.
Virtual machine is corrupted
Service links are unstable
Management link is unstable
The storage link is unstable
What is included in the virtual NUMA (multiple choice)
Load balancing, considering the node correlation during the scheduling process, and the corresponding relationship between the node and the physical node, to ensure the VCPU access to local content to the greatest extent
Place the site, check the NUMA topology of the virtual machine, and select the physical node mode VCPU and memory, so the relationship between VCPU and memory in node has always been physical.
The topology is displayed. The NUMA is recognized in the temporal part of the virtual machine. The guest OS and the NUMA optimization function take effect.
Dynamic migration, when the affinity between the VCPU and the physical node changes, trigger the migration of its corresponding Vnode memory
The KVM virtualization architecture includes KVM modules, QEMU and Libvirt. The following incorrect
description of these modules is
KVM module is mainly responsible for the creation of Vcpu and the allocation of virtual memory
KVM + QEMU can constitute a set of virtualization solutions Huawei - H13-511
Libvirt + QEMU can constitute a set of virtualization solutions
QEMU is mainly responsible for I / O operation simulation
Cloud computing is the product of the development of parallel computing, grid computing, and distributed
computing. The correct description of the relationship between the four is
Grid computing is completely replaced by the emergence of distributed computing
Cloud computing is a type of distributed computing
Parallel computing, network computing and distributed computing are all cloud computing
Grid computing completely replaces parallel computing
The following are computing virtualization (multiple choices)
CPU virtualization
Network virtualization
Memory virtualization
I / O virtualization
Disk virtualization
In Huawei FusionCompute, the following incorrect descriptions of security groups and rules are
Security group rule changes need to be manually applied to virtual machines in the security group
Must create a security group before adding rules
Security group denies all by default before adding rules
The premise of deleting a security group is that there are no virtual machines in the security group
In Huawei FusionCompute, virtual machines using raw device mapping type data storage are not supported
(multiple selection)
Snapshot
CPU Hot Add
Storage thin provisioning
Storage live migration
The following incorrect description of Huawei FusionCompute architecture is
CNA provides computing resources for virtual machines
VRM can run on CAN or can be deployed on a separate physical machine
VRM provides a management portal for administrators
CNA can manage cluster network, storage and computing resources
In Huawei FusionCompute, FusionStorage can be used as a virtualized storage
True
False
In fusioncompute, the virtual switch is connected to the physical network via ().
NIC
Virtual network card
Port group
Uplink
The following scenarios that are not suitable for increasing the memory reuse ratio are
Memory reuse in commercial scenarios has reached 150%
Reduce customer hardware procurement costs
While ensuring performance, customers require a single host to deploy the maximum number of virtual machines
Virtual machine memory utilization is low
In Huawei FusionCompute, the following description of the virtual machine HA is correct (multi-selection)
A Virtual machine HA function can quickly restore business when a failure occurs
When system B detects the blue screen of the virtual machine and configures the processing strategy as HA,the system will choose another normal computing node for reconstruction virtual machine
After HA is enabled in the cluster, virtual machines can be rebuilt on other hosts after a host failure
As long as resources are reserved in the D cluster, virtual machines with HA attributes can be rebuilt on other computing nodes when a fault occurs success
When a virtual machine on a physical host fails, it will not affect other virtual machines on the physical host. Which characteristic of virtualization technology is this?
Isolation
Division
Independence
Packaging
To configure the IP SAN for the host, you usually need to configure the host on the storage device to enable the host to be mapped on the IP SAN Shoot.
ISCSI Target
ISCSI Server
ISCSI Client
ISCSI Initiator
The weakest data redundancy of the following RAID levels is ()
RAID 1
RAID 6
RAID 0
RAID 5
The following description is incorrect
Each file system block corresponds to a discontinuous area on the physical disk.
The file is stored on the file system, and the file system is mapped to the file system block.
The file system block corresponds to the logical area of LVM
The logical area is mapped to the physical area of the disk through LVM
The following incorrect description of virtualization is (multi-select)
Network virtualization refers to distributed virtual switches
Storage virtualization refers to distributed storage
In cloud computing, IaaS layer virtualization can be divided into computing virtualization, storage virtualization, and network virtualization
Computing virtualization includes CPU virtualization, memory virtualization, and IO virtualization
If VM A can ping VM B, which of the following can be inferred?
Virtual machine A and virtual machine B use the same network segment
Both virtual machine A and virtual machine B are configured with the correct IP addresses
Virtual machine A and virtual machine B use different network segments
Virtual machine A and virtual machine B run on the same physical host
Cloud computing is the product of the development of the Internet and computing technology, so cloud computing must be inseparable from the network.
True
False
What is incorrect about the snapshot description is
A virtual machine can create multiple snapshots. When you use a snapshot to restore a virtual machine, subsequent snapshots become invalid.
Snapshots can save both virtual machine settings and virtual machine disk data
All virtual machines on a host can only create one memory snapshot at the same time
Snapshots can save the state of virtual machine memory
In Huawei FusionCompute, when a host in the cluster fails, the virtual machine on that host will automatically Automatic migration to other hosts in the cluster
True
False
In Huawei FusionCompute, the management VLAN ID used by VRM cannot be changed.
True
False
In Huawei FusionCompute, when the virtual machine is in the "running" or "stopped" state, users can increase or decrease the number of vCPUs of the virtual machine
True
False
Memory reuse technology is a prerequisite for QoS implementation of memory resources.
True
False
In Huawei FusionCompute, users can manage VMs in multiple ways:
Log in to the virtual machine directly for management
Use the graphical interface for management after logging into CNA
Use the graphical interface for management after logging in to VRM
Use the command line to manage after logging in to CNA
As FusionCompute, which one of the following options do not belong CPU resources QoS parameters?
CPU share of resources
CPU resource limits
CPU resource reservation
CPU resource reuse
Which of the following is not a feature of big data 4V
Value
Variety
Valid
Volume
What does not reflect the features of cloud computing on-demand self-service in the following options are
The engineer purchased a cloud server from Huawei public cloud according to his needs.
The engineer upgraded the cloud server CPU he purchased from 2 to 4
The engineer changed the operating system of the cloud server he purchased from Linux to Windows
The engineer received a notification message from the server provider one week before the cloud server expired.
The following incorrect description of the security group application scenario is
By setting security group rules, you can control permissions on folders in the virtual machine
By setting a security group rule, you can only allow remote login of virtual machines to specific IP addresses
By setting security group rules, you can protect virtual machines from being accessed
By setting a security group rule, you can make the virtual machine inaccessible to the FTP server
In Huawei FusionCompute, the resources of the cluster are composed of the host and its associated storage and network resources
True
False
Virtualization is divided into computing virtualization, storage virtualization and network virtualization,
corresponding to cloud computing cloud host, cloud storage, cloud network
True
False
Which of the following scenarios does virtualization apply to? [Multiple choice]
A company has a total of ten business systems, and the host resource utilization of these services is less than 20%
A scientific research institution uses a customized operating system to ensure the confidentiality of scientific research results
An enterprise needs a high-load, intensive computing environment
The daily use of desk applications by employees in a unit is highly similar
The process of creating a file system on a disk is often referred to as
Packaging
Formatting
RAID
Partition
What is incorrect about the VIMS file system description below?
VIMS is compatible with FC SAN, IP SAN, local disk
VIMS is the technical foundation for advanced features such as thin disks, snapshots, and storage migration
VIMS is a high-performance cluster file system
VIMS is a universal storage virtualization file system
Which of the following virtual machine disk file formats does Huawei FusionCompute not support?
Virtual Machine Disk
VHD
RAW
QEMU copy-on-write
The following description of the characteristics of cloud computing resource pooling is correct
Cloud computing resource pooling is a prerequisite for achieving extensive network access
Cloud computing resource pooling feature can put CPU and hard disk in the same resource pool
Cloud computing resource pooling characteristics can shield the differences between similar resources
Cloud computing resource pooling features must rely on virtualization technology to achieve
Huawei FusionCompute supports adding hosts in batches. The administrator fills in host information
according to the template provided by the system and imports it at one time.
True
False
The following description about the characteristics of type I (bare metal) computing virtualization is correct [multiple choices]
Applications can run directly on VMM
Hypervisor runs directly on physical hardware
Both applications and virtual machines can run directly on the Host OS
Application cannot run directly on Host Machine
The following description about KVM (Kernel-based Virtual Machine) is correct (multiple selection)
KVM is type II virtualization
KVM is a type I virtualization
KVM is a module in the Linux kernel
KVM is an open source virtualization technology
When installing Huawei FusionCompute, which storage is recommended for VRM deployment?
NAS
FC SAN
IP SAN
Local Disk
In Huawei FusionCompute, if there is only one physical network port in the bound network port, the physical network port cannot be removed directly.
True
False
The following Hypervisor description is incorrect
In virtualization, Hypervisor and VMM are a concept
In virtualization, Hypervisor can run directly on Host Machine
In virtualization, Hypervisor can monitor the status of the guest machine
In virtualization, only Hypervisor has direct access to physical resources
Common disk arrays include (multi-select)
Massive Arrays of Idle disks (MAID)
Redundant Array of Independent Disks (RAID)
Just a bunch of Idle disks (JBOD)
Switch of bunches Idle disks (SBOD)
When using a template to quickly deploy a virtual machine, the generated virtual machine configuration information is consistent with the template
True
False
NUMA is a memory architecture designed for multiprocessor computers. Memory access time depends on Processor location, under NUMA, the processor accesses its own local memory faster than non-local memory (the memory is located in Another processor, or shared memory between processors) is faster.
True
False
Memory reuse is a resource allocation scheme that increases the density of virtual machines on a single host, reduces costs, and sacrifice performance for density.
True
False
In a Linux virtual machine. The one who can manage the logical volume is
OVM
LVM
PVM
DVM
Data packets in the cloud computing virtual network need to be routed and forwarded by routers in the physical network. / TOR switch
True
False
Virtualization description is correct
VMM runs in Guest Machine
VMM runs directly on Host Machine
VMM runs on Guest OS
VMM runs on Host OS
In FusionCompute, when adding multiple hosts to shared storage, the following operations are correct (choose) the
Select all hosts when associating storage devices
Check the corresponding host when adding data storage
when the shared memory type is IP SAN, and storage to ensure storage network interface to a host service in communication
Select all hosts when initializing storage resources
If an enterprise uses a hybrid cloud, the devices that cannot be used as the demarcation point between public and private clouds are
Core switch
Firewall
Virtual switch
Flow cleaning equipment
In cloud computing, different types of hardware of the same type can form a resource pool.
True
False
Open source virtualization technologies are all type I virtualization, and closed source virtualization technologies are all type II virtualization
True
False
For FusionCompute, the following incorrect description of storage-related concepts is
A physical storage device can be used as a storage resource
Logical unit in the physical storage corresponding to the storage device, such as a LUN
Data storage can be IP SAN, FC SAN, NAS, etc.
VHD is the virtual machine disk file format
The following are the main driving forces for the emergence and development of virtualization technologies:
The emergence of the Internet
Reduce the failure rate of hardware resources
Make full use of hardware resources
Improve the recognition of hardware resources
In Huawei FusionCompute, when multiple virtual machines are writing to the same shared disk at the same time, in order to prevent data loss, it is necessary to ensure the application software's access control to the disk
True
False
The following description about making templates in FusionCompute is incorrect .
"Virtual machine to template" is to directly convert a virtual machine into a template, all parameters use the current configuration of the virtual machine. The virtual machine will no longer exist after conversion
When using a virtual machine to make a template, the status of the virtual machine can be "running"
"Clone a template as a template" is to copy the template as a new template and support adjustment of some parameter configurations, which can be slightly different from the original template. The difference is that the template still exists after cloning is complete
"Clone a virtual machine as a template" is to copy the virtual machine as a template and support adjustment of some parameter configurations, which can be compared with the original virtual machine. The virtual machine is slightly different. The virtual machine still exists after cloning is complete
With the development of AI technology, almost every technology now involves artificial intelligence. Which of the following is now AI? Application area? [multiple choices]
Appease the robot
Voice recognition
Image Identification
NLP (Neuro-Linguistic Programming)
The following description about the differences between physical switches and virtual switches is incorrect
Virtual switch runs on a physical server, and the physical switch has separate hardware
The virtual switch cannot operate on the VLAN tag, and the physical switch can operate on the VLAN tag
A virtual switch cannot be configured with a Layer 3 interface, and a physical switch can be configured with a Layer 3 interface
Virtual switches also require certain hardware resources for their normal operation
Common external storage solutions are
Direct-Attached Storage (DAS)
Network-attached Storage (NAS)
Network Fiel System (NFS)
Storage Area Network (SAN)
In Huawei FusionCompute, in addition to configuring static routes, DVS also supports multiple dynamic routes.
True
False
The necessary conditions for a virtual machine to communicate with other virtual machines are (multiple choice)
Configure a fixed IP address for the virtual machine
Configure the correct IP address for the virtual machine
Configure the correct MAC address for the virtual machine
Configure the gateway address for the virtual machine
