H13-511_V4.0-ENU Online Training Archives

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1. A virtual machine whose status is "running" can only clone one virtual machine at a time, the batch cloning is not supported.

TRUE

FALSE

2. A company has deployed services on the FusionCompute platform. In order to optimize the memory access performance of the virtual machine, which one of the following virtual machine features needs to be used?

NUMA

Resource Hot Add

Template Deployment

Snapshot

3. The virtual machine network QoS policy provides bandwidth configuration control capabilities, and the QoS function supports traffic restrictions between virtual machines on the same host.

TRUE

FALSE

4. Load balancing can share specific services to multiple network devices or multiple links, thereby improving service processing capabilities and ensuring high service reliability.

TRUE

FALSE

5. Which of the following can achieve load balancing between different hosts in a FusionCompute cluster?

DPM

IMC

DRS

6. In the early stage of an enterprise's operation, two physical hosts are used to deploy the FusionCompute platform to carry services. The two hosts are in the same cluster. VM 1 runs on host A and VM 2 runs on host B. The service needs to reduce the load on host A, the technician is now migrating VM1 on host A to host B and finds that the migration cannot be completed. Which of the following is the possible reason?

The cluster has enabled the IMC policy

The cluster has enabled memory reuse

VM 2 is set to bind with host B

VM 1 and VM 2 set up mutually exclusive virtual machine policy

7. Which of the following is not a feature of 5G?

Wide connection

High speed

low cost

Low latency

8. A company is migrating its service system to the FusionComute virtualization platform, and the management plane and service plane are on different network segments. However, due to incorrect configuration, services of a Linux virtual machine cannot run normally after the migration. Which of the following methods cannot be used by engineers to log in to the faulty virtual machine for troubleshooting?

Use putty to log in to the virtual machine remotely

9. In the FusionCompute virtualization platform, Tools are installed in the same way on all operating systems.

TRUE

FALSE

10. As a rapidly developing technology in recent years, cloud computing has its own unique advantages. The advantages of cloud computing include: on-demand self-service, extensive network access, higher performance, and measurable services.

TRUE

FALSE

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11. Which of the following descriptions about KVM is wrong?

KVM is a kernel-based virtual machine that runs on the Linux operating system

KVM supports hardware-assisted virtualization

KVM requires Domian0 virtual machine to schedule hardware resources

KVM virtual machines exist as processes on the operating system

12. A bank now needs to purchase batches of hard disks to store some key data for daily operations. Which of the following hard disks is the most suitable?

SSD disk

SATA disk

SAS disk

NL-SAS disk

13. A company needs to expand the disk capacity of some business virtual machines due to business development, but it is found that several disks do not support capacity expansion. Which of the following is not a possible cause of the failure?

The disk is a shared disk

The disk is a differential disk

The virtual machine is in the "stopped" state

The virtual machine is in maintenance mode

14. Which of the following descriptions about namespaces in Linux virtual networks is wrong?

Multiple namespaces can be created within a Host

A device can only be in one namespace

From a purely network perspective, namespace can provide an independent network protocol stack

Different namespaces are isolated from each other and cannot communicate

15. Which of the following descriptions about ovs is wrong?

Support QoS function

Support VLAN function

Does not support web services

Does not support OpenFlow protocol

16. Which of the following is the most suitable cloud computing operation model for small IOE enterprises?

Hybrid cloud

Private Cloud

Community Cloud

Public cloud

17. Which of the following descriptions about Libvirt components is wrong?

Libvit is a set of library functions, called by other techniques, to manage virtual machines on the machine

KVM, Xen and LXC, etc., can call the api provided by Libvir to manage the virtualization platform

Libvit is a closed source project, it is a very powerful management tool

Libvirt provides programming interfaces in multiple languages, which can be directly programmed to call the external interface provided by Libvir to realize the operation of the virtual machine

18. Which of the following descriptions about RAID is wrong?

RAID 6 ensures the reliability of user data by mirroring

RAID 5 ensures the reliability of user data by means of parity

RAID 0 improves storage read and write performance through striping

RAID 1 ensures the reliability of user data by mirroring

19. Which of the following descriptions about the OvS (Open vSwitch) function is wrong?

Divide the local area network

Building the Tunnel

Hardware Monitoring

Analog routing

20. Which of the following descriptions about Hypervisor is correct?

Hypervisor is equal to virtualization, and virtualization can be realized with Hypervisor

Hypervisor implements isolation between the operating system and applications and the hardware layer

Hypervisor is an operating system in host virtualization

Hypervisor running in non-root mode in hardware assisted virtualization

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21. Which of the following descriptions about KVM is correct?

KVM is a hardware-assisted virtualization

KVM is a closed-source virtualization technology

KVM is a virtual machine on Linux

KVM uses front-end and back-end architecture to realize virtualization

22. Which of the following descriptions about the development of cloud computing architecture is wrong?

The resource pool is constructed from a small-scale resource virtualization integration to a larger-scale resource pool

Platform and cloud management software move from closed source and closed source to open source and open source

From IT non-critical applications to enterprise critical applications

Data form unstructured and semi-structured to structured

23. Which of the following descriptions about cloud computing is wrong?

Provide a unified software interface standard for upper-layer applications

The bottom layer can use virtualization technology to improve resource utilization

Support users to use cloud resources through the network using multiple devices

Using a software-defined method, the data fault tolerance is not high

24. In virtualization, the disk files of the virtual machine will be stored in the file system in the form of files, but from the perspective of the virtual machine operating system, the virtual machine disks, like ordinary disks, can be seen in the "hardware resources" of the system.

TRUE

FALSE

25. Compared with mechanical hard disks, solid hard disks have the advantages of good shock resistance, small size, no sound insulation, small heat dissipation and low price.

TRUE

FALSE

26. Solid-state drives are suitable for scenarios where data access is very frequent.

TRUE

FALSE

27. Under thin provisioning, only the virtual storage space of written data will actually allocate physical storage and virtual storage space of unwritten data does not occupy physical storage resources.

TRUE

FALSE

28. A company intends to purchase a batch of hard disk devices, which are mainly used to store archived data. Considering the large amount of data, it is recommended that the company purchase solid-state hard disks.

TRUE

FALSE

29. When a user uses a virtual machine, the disk of the virtual machine is the same as a common hard disk on the operating system, and is a hard disk from the user's perspective.

TRUE

FALSE

30. In the NAT technology, through the server mapping function, it is possible to realize the requirement that the virtual machine inside the virtualization platform can access the external network service through the public network address.

TRUE

FALSE

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31. The large 2-layer network architecture can meet the large east-west traffic demand of the data center.

TRUE

FALSE

32. The existing two hosts A and B are interconnected through a layer switch, and A and B belong to different VLANs. When host A sends a broadcast message to the network, host B will receive a message whose destination MAC is all "F".

TRUE

FALSE

33. When enterprises use KVM virtualization, they can choose the method of device simulation for I/O virtualization, which has good compatibility, no hardware dependence, and the user's operating system does not need to be modified, but the I/O performance will be relatively poor.

TRUE

FALSE

34. The IP SAN network mainly builds a storage network with Ethernet as the bearer. And use the iSCSI protocol for transmission.

TRUE

FALSE

35. All RAID levels can enhance the fault tolerance of the system and improve the read and write performance of the storage system.

TRUE

FALSE

36. When a certain end on a secondary switch is only sending messages, it cannot receive messages from another device.

TRUE

FALSE

37. Using Virtio for device simulation can shorten the path of I/O requests and improve the performance of virtualization.

TRUE

FALSE

38. Which of the following is not a function of a virtual machine?

Support template deployment

Support for snapshots

Support online memory size reduction

Support control through console

39. In FusionCompute, when virtual machines are live migrated across hosts (CPUs of different Intel models), which one of the following policies needs to be set for the cluster?

DPM

DRS

IMC

40. Which of the following descriptions about the expansion requirements of virtual machine disks in Fusion Compute is correct?

When the data storage type to which the disk belongs is NAS storage and the configuration mode of the disk is "Normal", online increase of disk capacity is not supported

When the disk mode is "independent-non-persistent", it supports online increase of disk capacity

The data storage type to which the disk belongs must be a SAN type storage resource

When the virtual machine is in the "stopped" state, disk expansion cannot be performed