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WorksheetsCloud Computing V.4.0-P2
Total questions: 100
Worksheet time: 50mins
Which of the following does not reflect the self- service feature of cloud computing? (Single answer)
Engineer A purchases an ECS from HUAWEI CLOUD to meet his/her own requirements
Engineer B changes the operating system of the ECS purchased by himself/herself from Linux to Windows
Engineer C increases the number of CPUs of the ECS purchased by himself/herself from 2 to 4.
Engineer D receives an SMS notification from the ECS provider one week before the ECS expires.
Which of the following is about the on-demand self-service feature of cloud computing? (Single answer)
Users do not need to communicate the service providers at all when using cloud computing resources.
After determining the required cloud computing service, users can apply for cloud computing resources by themselves
The cloud computing service providers only need to prepare the cloud services and users will complete remaining process all by themselves.
When using cloud computing resources, the users need to solve all by problems by themselves.
Which of the following are true about the ubiquitous network access feature of cloud computing? (Multiple answers)
With network connections, users can use purchased cloud computing resources from different terminals.
With network connections, users can use purchased cloud computing resources at different places.
With network connections, users can connections, users can use purchased cloud computing resources anytime.
With network connections, users can view the status of purchased cloud computing resources anytime.
Which of the following is true about the resource pooling feature of cloud computing? (single answer)
The resource pooling feature of cloud computing shields the difference between resources of the same type.
The resource pooling feature of cloud computing allows CPUs and disks to be added to the same resource pool.
The resource pooling feature of cloud computing is the prerequisite for the ubiquitous network access feature.
The resource pool feature of cloud computing depends on the virtualization technology
Which of the following are true about the fast and elastic scaling feature of cloud computing? (Multiple answers)
Engineer A purchases an ECS on HUAWEI CLOUD.
Engineer B increases the number of CPUs of an ECS purchased on HUAWEI CLOUD from 2 to 4.
Engineer C increases the number of ECSs in a cluster to 10 during the Double 11 (November 11) shopping festival and restores the number of ECSs to 4 one week later.
An ECS purchased by engineer D is reclaimed after it expires due to no renewal
The measurable service feature of cloud computing refers to charging based on time and usage.
True
False
Cloud computing is a product of Internet and computing technologies development. Therefore, cloud computing is indispensable of network connections.
True
False
There are many milestone events in milestone events in the development of the Internet. Which of the following is true about the time sequence of the milestone events? (Single answer)
the Establishment of TCP/IP protocol --> Birth of ARPANET -> "www officially open to the public --> Birth of DNS
Birth of DNS --> Establishment of the TCP/IP protocol Birth of ARPANET -> "www officially open to the public
"www officially open to the public →Birth of DNS --> Establishment of the TCP/IP protocol →Birth of ARPANET
Birth of ARPANET --> Establishment of the TCP/IP protocol --> Birth of DNS → "www officially open to the public
Which of the following is true about cloud computing? (single answers)
Cloud computing is a technology that enables users to obtain IT resources anytime and anywhere.
Various IT resources of cloud computing can be used only after being paid.
The IT resources of cloud computing can be used only through network connections.
During the process of obtaining IT resources, users need to repeatedly negotiate with cloud computing service provider.
Which of the following can implement computing virtualization and improve resource utilization in the era of cloud computing 1.0? (Multiple answers)
KVM
Open Stack
Hyper-V
Xen
When a cloud computing service provider offers cloud services to a customer, the customer needs only to inform the provider of the required resources or applications. Then the provider will provide the resources or applications immediately. When the customer needs to expand or reduce the capacity, the service provider can change the resources or applications accordingly. Which feature of cloud computing is reflected by the preceding description? (single answer)
Ubiquitous network access.
Resource pooling
Measurable service
Fast and elastic scaling
On-demand self-services
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
Which of the following is the difference between the public cloud and the private cloud? (single answer)
The public cloud has industry attributes, but the private cloud does not.
The private cloud has industry attributes, but the public cloud does not.
The public cloud is open to the public, while the private cloud is only open to specific users.
Public cloud services the need to be paid, while private cloud services are free of charge.
The cloud services purchased by a user include an application running environment, but do not contain any application or related data. This mode is ( ). (Single answer)
laaS.
PaaS.
SaaS.
Naas
Which of the following belongs to the SaaS mode of HUAWEI CLOUD? (Single answer)
Elastic cloud server (ECS)
Facial recognition
Elastic Volume Service (EVS)
Object Storage Service (OBS)
laaS in cloud computing refers to ( ). (Single answer)
Information as a Service
Infrastructure as a Service
Industry as a Service
Instruction as a Service
On HUAWEI CLOUD, a user has applied for an ECS that has only the operating system installed. This servicer. mode is ( ). (Single answer)
laaS
PaaS
SaaS
NaaS
Which of the following are true about the cloud computing deployment modes? (Multiple answers)
The private cloud is deployed on the premises of enterprises and used by internal employees.
The public cloud is generally constructed by carriers or cloud service providers. It sells or leases services to the public.
The hybrid cloud is generally constructed by carriers or cloud service providers. It integrates the features of the public cloud and private cloud. It sells or leases services to the public.
The industry cloud generally has attributes of a certain industry, which is a large private cloud" or "small public cloud".
A user applies for an ECS on HUAWEI CLOUD. Which of the following about ECS are true? (Multiple answers)
The operating system of the ECS can be provided by HUAWEI CLOUD or created by the user.
If an IP address is configured for the ECS, the service mode is PaaS. Otherwise, the service mode is laaS.
You can log in to the ECS through a PC or a mobile phone.
Running of the ECS requires the local hardware resources of the user.
If an enterprise deploys a hybrid cloud, which of the following devices cannot be used to set the boundary between the public cloud and private cloud? (Multiple answers)
Virtual switch
Core switch
Firewall
Traffic cleaning device
Which of the following is true about virtualization? (single answer
Applications that can run on physical machines can also run on VMs.
VMs with different virtualization technologies can be mutually converted.
Virtualization improves the unification of hardware resources.
Virtualization and non-virtualization resources cannot coexist in one data center.
Generally, a VM has a configuration file that records the specifications and name of the VM.
True
False
Which of the following is an open-source virtualization technology? (single answer)
Hyper-V
KVM
vSphere
Fusion Compute
Which of the following are false about virtualization? (Multiple answers)
In cloud computing, virtualization at the laaS layer consists of computing virtualization, storage virtualization and network virtualization.
Computing virtualization includes CPU virtualization, memory virtualization, and I/O virtualization.
Storage virtualization refers to distributed storage.
Network virtualization refers to distributed virtual switches.
Which of the following belong to computing virtualization? (Multiple answers)
CPU virtualization
Memory virtualization
Disk virtualization
Network virtualization
I/O virtualization
The main reason for the rapid development of virtualization is that the VM outperforms the physical machine and has a wider application scope.
True
False
Cloud computing is a product of parallel computing, grid computing, and distributed computing. Which of the following is true about their relationship? (single answer)
Distributed computing completely replaces grid computing.
Grid computing completely replaces parallel computing.
Cloud computing is a type of distributed computing.
Parallel computing, grid computing, and distributed computing all belong to cloud computing
The main driving force behind the emergence and development of virtualization technologies is ( ). (single answer)
Make full use of hardware resources.
Emergence of the Internet
Enhance the identification of hardware resources
Reduce the failure rate of hardware resources.
Which of the following belongs to the host machine role in Huawei FusionCompute architecture? (single answer)
UVP
KVM
VRM
CNA
In Huawei FusionCompute, a VM running Linux is created. In this scenario, the host OS runs in ( ). (single answer)
VRM
Linux VM
CNA
VNA
In computing virtualization, the operating system running in a VM is referred to as the host OS.
True
False
In computing virtualization, the hypervisor is an intermediate software layer running between the physical server and the OS. It monitors the status of the host OS
True
False
Which of the following is false about the hypervisor? (single answer)
In virtualization, only the hypervisor can directly access physical resources
In virtualization, the hypervisor can monitor the status of the guest machine.
In virtualization, the hypervisor can directly run on the host machine.
In virtualization, the hypervisor and VMM are the same concept.
Which of the following are true about the relationship between the host machine and guest machine? (Multiple answers)
With the virtualization technology, one host machine can run multiple guest machines.
With the virtualization technology, one guest machine can use resources of multiple host machines.
With the virtualization technology, one host machine can run only one hypervisor.
With the virtualization technology, one guest machine can run only on the host machine where it is created.
Which of the following are true about the type I (bare metal) computing virtualization? (Multiple answers)
Applications can directly run on VMM.
Applications and VMs can directly run on the host OS.
The hypervisor directly runs on physical hardware.
Application cannot directly run on the host machine
Which of the following is true about the type II (hosted) virtualization? (single answer)
VMM runs on the host OS.
VMM directly runs on the host machine.
VMM runs on the guest OS.
VMM runs on the guest machine
Open-source virtualization technologies are all type I virtualization. Closed source virtualization technologies are all type II virtualization.? (single answer)
True
False
If a VM on a physical host is faulty, other VMs on the physical host are not affected. Which of the following feature of the virtualization technology is reflected by the preceding description? (single answer)
Partition
Isolation
Encapsulation
Independence
Which of the following are used to allocate CPU and memory resources to VMs in computing virtualization? (Multiple answers)
Host OS
Guest OS
VMM
Hypervisor
Computing virtualization technologies can be classified into type I and type II virtualization or full virtualization and paravirtualization from different perspectives.
True
False
A VM consists of the VM configuration file and disk file. Users can move the two files to run the VM on different physical hosts. Which features of cloud computing are reflected by the preceding description? (Multiple answers)
Encapsulation
Isolation
independence
Partition
Which of the following are true about the encapsulation feature of virtualization? (Multiple answers)
Multiple VMs can concurrently run on a physical host.
If a VM has multiple disks, each disk generates a corresponding disk file.
The VM configuration file contains information such as the CPU type and quantity.
VMs can be migrated from one physical host to another.
Which of the following best demonstrate the advantages of virtualization? (Multiple answers)
With the virtualization technology, multiple applications can concurrently run on the operating system of a physical host.
With the virtualization technology, the CPU usage of a physical host keeps around 65%.
With the virtualization technology, VMs can be migrated between hosts.
With the virtualization technology, multiple VMs can concurrently run on a physical host.
Virtualization is applicable to which of the following scenarios? (Multiple answers)
A company has 10 service systems. The resource usage rate of the hosts running the service systems is less than 20%.
All employees in a company almost use the same office desktop applications.
A scientific research institute uses a customized operating system to ensure the confidentiality of scientific research results.
An enterprise requires a high-load and compute-intensive environment.
The reasons why the computing virtualization technology can improve application reliability are ( ). (Multiple answers)
VMs that run applications are decoupled from hardware, enabling VMs to migrate between physical hosts
The computing virtualization technology enables multiple applications to concurrently run on the same physical host.
The computing virtualization technology can automatically adjust VM specifications
The computing virtualization technology can automatically allocate VMs that run applications to physical hosts with sufficient resources.
Which of the following are true about the relationship between virtualization and cloud computing? (Multiple answers)
Virtualization is one of the technologies to implement cloud computing
Virtualization is a technology. Cloud computing is a service mode. Virtualization promotes the development of cloud computing.
Without cloud computing, virtualization has no value.
Without virtualization, cloud computing has no value.
The virtualization technology can improve hardware resource utilization and reduce O&M costs. Cloud computing also has these advantages. Therefore, cloud computing and virtualization technologies are inseparable from each other.
True
False
Some virtualization technologies are opensource and some are closed-source. So does the cloud computing management platform. The open-source cloud computing management platform needs to be implemented by opensource virtualization technologies.
True
False
The CPU virtualization technologies can be classified into full virtualization, paravirtualization, software virtualization, and hardware-assisted virtualization.
True
False
Which of the following are true about KVM virtualization? (Multiple answers)
The host OS can be Linux.
The host OS can be Windows.
The guest OS can be Linux.
The guest OS can be Windows.
Which of the following are true about Kernel-based Virtual Machine (KYM)? (Multiple answers)
KVM is an open-source virtualization technology
KVM belongs to type I virtualization
KVM belongs to type II virtualization
KVM is a module in the Linux kernel.
Which of the following are true about KVM and Xen? (Multiple answers)
KYM and Xen are open-source hypervisors.
Domain 0 and Domain U are concepts in KVM.
KVM and Xen can run in the same host OS.
Xen VMs can be converted to KVM VMs.
Kernel-based Virtual Machine (KVM) is an open-source full virtualization solution
True
False
Which of the following belong to the Kernel-based Virtual Machine (KVM) architecture? (Multiple answers)
Libvirt.
Domain 0.
QEMU.
ESXi.
Kernel-based Virtual Machine (KVM) VMs can run on other virtualization platforms after being converted.
True
False
Which of the following is not a Kernel-based Virtual Machine (KVM) management tool?
Libvirt
Virsh command set
Virt-Manager
QEMU
QEMU functions as a hardware Simulator in KVM. It is a unique technology of the Linux operating system.
True
False
Which of the following operations can be performed in Huawei FusionCompute? (Multiple answers)
Create VMs.
Delete VMs.
Convert VMs on other virtualization platforms to VMs that can be used by FusionCompute
VMs on other virtualization platforms to VMs that can be used by FusionCompute
d)
In Huawei FusionCompute, users can manage VMs in which of the following modes? (Multiple answers)
Log in to the CNA and run commands for management
Log in to the VM for management
Log in to the VRM and use the GUI for management
Log in to the CNA and use the GUI for management.
You can create a KVM VM on the GUI or by running commands
True
False
Which of the following are true about the function of Libvirt in Kernel-based Virtual Machine (KVM)? (Multiple answers)
Libvirt is one of the KVM management tools.
The Libvirt APls can be called to operate KVM VMs in multiple programming languages
Libvirt is customized for KVM.
Libvirt is an indispensable part of the KVM architecture.
Which of the following are true about Virtio? (Multiple answers)
Virtio is an I/O paravirtualization solution.
Virtio is an I/O full virtualization solution.
Virtio improves I/O forwarding efficiency.
After Virtio is used, OEMU is not required.
If KVM uses Virtio, which of the following are true about the I/O forwarding process? (Multiple answers)
The I/O requests need to be forwarded by the KVM module.
The I/O requests are directly sent by the frontend driver to the backend driver.
The forwarding efficiency of I/O requests increases.
The I/O requests are not forwarded through OEMU.
With Virtio, the NIC transmission rate of a Windows VM is 10 Gbit/s.
True
False
A user applies for an EVS disk on HUAWEI CLOUD. This service mode is ( ).
laaS
PaaS
Saas
DaaS
Which of the following is true about distributed storage?
Disks of distributed storage are from x86 disk arrays.
Disks of distributed storage are from x86 VMs.
Disks of distributed storage are from x86 servers.
Disks of distributed storage are from PCs.
In Huawei FusionCompute, FusionStorage can be used as a virtualized storage device.
True
False
In Huawei FusionCompute, which of the following is false about the uplink links?
The uplink is between the DVS and physical NIC of the host. One host has only one uplink.
An uplink can correspond to one physical network port or the logical port that binds multiple physical network ports.
Multiple DVSs cannot share an uplink.
A host can have multiple uplinks connected to different DVSs.
In Huawei FusionCompute, which of the following is false about port groups and security groups?
One DVS can have multiple port groups. One VM can be protected by multiple security groups
Security groups protect VMs based on port groups.
A port group is an aggregation of virtual ports on a DVS. A security group is a set of rules.
A VM NIC is connected to a virtual port in a port group. A VM NIC is associated with a security group.
Which of the following is false about iSCSI and Fiber Channel?
At the transmission layer, fiber channel transmission uses the Fiber Channel (FC) protocol and iSCSI uses the TCP/IP protocol.
iSCSI runs on the Ethernet based on the TCP/IP protocol and can be seamlessly integrated with the existing Ethernet.
The Fiber Channel (FC) protocol is completely heterogeneous with the existing Ethernet and the compatibility is poor.
The transmission distance of FC is longer than that of the TCP/IP.
The service mode shown in this picture is ( ).?
laaS
PaaS
SaaS
DaaS
In Huawei FusionCompute, which of the following storage virtualization features are supported?
Thin provisioning
Storage live migration
Snapshot
Disk capacity expansion
Which of the following VM disk file formats is not supported by Huawei FusionCompute?
VMDK
QCOW2
RAW
VHD
SATA disks use parallel Single ports and SAS disks use serial ports
True
False
Which of the following is recommended for the archive room where a large amount of data needs to be stored for a long time and does not need to be read frequently?
SSD disk
SAS disk
SATA disk
NL-SAS
SSDs are mechanical hard disks, featuring fast read/write speed, low power consumption, and light weight. However, SSDs have limited service life.
True
False
Which of the following are true about RAID?
A RAID group can be regarded as storage space consisting of two or more disks. The available capacity of a RAID group is the sum of the capacity of disks in the group.
RAID improves the I/O. The performance of a storage system by concurrently reading and writing data on multiple disks.
When a disk is damaged, other disks in RAID 5 can still work properly, and the disk I/O performance is not affected.
Compared with RAID 5, RAID 6 has stronger data recovery capability, but weaker read/write capability of disks.
In RAID 5 and RAID 6, the number of faulty disks that can be tolerated is ( ), respectively
1, 2
2, 3
2, 1
3, 2
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
Based on RAID 5, RAID 6 enhances the fault tolerance capability of disks and allows two disks to be faulty at the same time. The minimum number of disks in a RAID 6 group is 4.
True
False
The universal storage space unit mapped to the host in the disk array is ( ), which is the logical space created based on RAID.
Storage pool
Volume
LUN
Partition
RAID 1 can replace data backup. Data mirroring is used to improve the fault tolerance of disk arrays. The data recovery cost is the smallest among all.
True
False
Which of the following RAID levels has the highest disk space usage?
RAID 0
RAID 1
RAID 5
RAID 6
Which of the following RAID levels has the weakest data redundancy capability?
RAID 0
RAID 1
RAID 5
RAID 6
Common categories of disk arrays include ( ).
RAID
JBOD (Just a Bunch of Disks)
SBOD (Switched Bunches of Disks)
MAID (Massive Arrays of Idle Disks)
The common external storage solutions include ( ).
DAS
SAN
NAS
NFS
Compared with SAN, which of the following is not an advantage of NAS?
The file system of NAS supports a single file with higher specifications.
NAS supports more files.
Block data transmission is optimized.
File sharing is optimized.
NAS has its own file system. After accessing NAS through the network sharing protocol, the application server can read and write the files in the file system.
True
False
When configuring IP SAN for a host, you need to configure ( ) for the host on the storage device to map the host to the IP SAN.
iSCSI Server
iSCSI Client
iSCSI Initiator
iSCSI Target
Compared with FC SAN, which of the following is not an advantage of IP SAN?
Low construction cost
Long transmission distance
High transmission efficiency
Convenient bandwidth expansion
Which of the following is not included in the NAS architecture?
Status verification module
File system
Volume management module
Network port
In a NAS environment, data inconsistency may occur when multiple hosts write data to one file at the same time.
True
False
Which of the following network file sharing protocols are supported by NAS?
NTFS
NFS
CIFS
FTP
iSCSI is a standard protocol based on the ( ) protocol and SCSI instruction set. It is widely used in many storage networks of the ( ) architecture.
FC, FC SAN
TCP/IP, FC SAN
TCP/IP, IP SAN
FC, IP SAN
Which of the following is false about differences between SAN and NAS?
NAS has its own file system, but SAN does not.
SAN provides block-level data transmission and storage services, while NAS provides file- level transmission and storage services.
SAN is a network architecture, while NAS is a network file storage device.
SAN can expand storage space, but NAS devices cannot be expanded.
SAN provides a host with a raw disk where no file system is created. The file system to be created depends on the operating system of the host.
True
False
Storage virtualization can be classified into ( ).
Block-level virtualization
Page-level virtualization
File-level virtualization
Application-level virtualization
In Huawei FusionCompute, if only one physical network port is in a bound port, the physical network port cannot be removed directly.
True
False
In Huawei FusionCompute, ( ) can only be used as nonvirtualized storage.
SAN
NAS
Local disk
FusionStorage
In Huawei FusionCompute, you can perform which of the following operations on the VRM?
Divide RAID groups for disk arrays.
Manually add a storage device to a VM.
Add SAN storage as non-virtualized storage.
Convert virtualized storage to non-virtualized storage
