Cloud computing is a style of computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet (True or False)

Cloud Computing, over the Internet provides shared software and hardware resources as well as data information on demand to computers and other devices (True or False)

Cloud computing is a style of computing in which isn't dynamically scalable but it often virtualized resources are provided as a service over Internet (True or False)

Under Cloud era, software, hardware, and services are not provided over the Internet, because the users will access services using a web browser or a Lightweight terminal, every day and every time. (True or False)

Does "the Huawei cloud management expert system" permit unified hardware and software management? (true or false)

The layer 2 forwarding feature of switches complies with the 802.1D Bridges Standard. (true or false)

VLAN identifier is a 12-bit into TCI field in the 802.1q header, support up to 4096 VLANs. have 3 bit as a Priority and Canonical Format indicator. (true or false)

Trunk port belongs to one or multiple VLANS untagged mode. (True or false)

The best effort service is a type of QoS into IP networks? (T or F).

Latency is the time interval between sending a data packet from one end and receiving it on the other end.

Traffic Policing is used to monitor the traffic volume entering a network and keep it within a specified range. Use Committed Access Rate, Token bucket algorithm and traffic control.

CAR, GTS and LR use the token bucket to control traffic. (T or F).

First in first out queuing, priority queuing, custom queuing and weighted fair queuing, are not algorithms queuing for a Congestion Management, are algorithms for congestion avoidance?

iStack is a stacking system for access devices, such as S5700 and S3000. Currently, up to 9 devices can be stacked.

CSS (clustering for core devices and iStack are almost the same in terms of the mechanism and the management plane, and therefore can be collectively referred to as stacking technologies.

Core and aggregation switches are stacked using CSS and Acces switches are stacked using iStack

The Active Directory is a sophisticated service component of a Windows Server. It processes network objects, including users, groups, computers, network domain controllers, emails, organizational units, and trees in organizations.

An AD structure is an arrangement of object information

In AD, the root domain and other domain trees in a forest are linked through a transitive trust hierarchy

Dynamic Host Configuration Protocol (DHCP) is a LAN protocol running at the UDP layer to assign dynamic IP addresses to clients on the Internet.

A virtual machine (VM) is a software computer that functions like a physical computer, running an operating system (OS) and applications.
A VM runs on a host, obtains CPUs, memory, GPU, USB devices, and other resources on the host, and uses network connection and storage access capabilities of the host. Multiple VMs can run concurrently on one host. (True or False)

A VM template is a copy of a VM, containing an OS, applications, and VM specification configurations. It is used to create VMs that have OSs installed. Compared with creating bare VMs, creating VMs using a template reduces much time. (true or false)

Each virtual network interface card (NIC) has an IP address and a MAC address. It has the same functions as a physical NIC on a network. FusionCompute supports intelligent NICs (iNICs),

In Bandwidth control based on a network plane: The management plane, storage plane, and service plane are allocated with specified bandwidth based on the physical bandwidth resources. Does the traffic congestion on a plane affect I/O on other planes?

Each host connects to a distributed virtual switch (DVS), which functions as a physical switch. The DVS connects to VMs through a virtual port in the downstream direction and to the host NIC in the upstream direction. The DVS implements network communication between hosts and VMs. In addition, the DVS ensures unchanged network configuration for VMs when the VMs are migrated across hosts.

Server virtualization enables physical server resources to be converted to logical resources. With virtualization technology, a server can be divided into multiple virtual computing resources that are isolated with each other. CPU, memory, disks, and I/O resources become pooled resources that are dynamically managed.

One VM support a maximum of 64 vCPUs.

Today, One VM support more than of 1 TB virtual memory.

Storage virtualization enables a storage device to be converted to a logical data store. A VM is stored as a set of files in a directory on a data store. A data store is a logical repository that is similar to a file system. It can combine storage devices of different types and provide a unified model to store VM files. The storage virtualization technology helps the system manage virtual infrastructure storage resources with high resource utilization and flexibility.

The JBOD provide data redundancy (true or false)

Redundant Array of Independent Disk is a storage technology that combines multiple physical disk into a logical unit for improving data redundancy and performance.

On the physical volume, one or more logical unit numbers can be created and mapped as basic block devices to hosts.

When multipathing software is installed, it creates a virtual HBA between the disk driver and the two HBAs. The disk driver detects only one virtual disk and maps it to the host, on the contrary, the LUN is mapped several times to the host operating system.

Into Virtual CPU. VMs share the same Memory addresses (true or false)

The typical virtualization approaches are privilege deprivileging and trap-and-emulation. Specifically, guest OSs run at a non-privileged level deprivileging) whereas the Virtual Machine Monitor (VMM) runs at the highest privilege level (full control of system resources). After guest OSs are de-privileged, most of their instructions can still be executed on hardware. Only the privileged instructions are trapped and emulated by the VMM. (True or False)

The key point of memory virtualization lies in introducing a new layer of address space, that is, the physical address space of clients. Clients think that they run in the actual physical address space; however, they access physical addresses through the VMM in fact. The VMM saves the mapping table that records relationships between clients' address spaces and physical machines' address spaces.

An x86 processor has four priorities in protected mode, Ring 0, Ring 1, Ring 2, and Ring 3. The priority of each Ring is subject to the performed function. Ring 0 is used for the OS kernel and has the highest priority. Ring 1 and Ring 2 are used for OS services and have lower priorities. Ring 3 is used for applications and has the lowest priority.

VT-x refers to the VT technology adopted by Xeon processors and VT-I refers to the VT technology adopted by Itanium processors. (True or false)

VT-d: VT for Direct I/O, which is applied on chip sets. It allows VMs to directly access I/O devices to relieve the loads of the VMM and CPU.

VT-c: VT for Connectivity, which is mainly applied on network adapters. It includes two core technologies: VMDq and VMDc.

"Host storage virtualization + File system" allows hosts to manage VM disk files through file systems. This type of virtualization allows the virtualization layer to provide advanced services that are independent of storage devices. (True or false)

"Host Storage Virtualization + File System" allows hosts to manage VM disk files through file systems. This type of virtualization allows the virtualization layer to provide advanced services. Currently, this type of virtualization is widely applied.

A cloud computing data center don't allows dynamic migration of VMs, which is easy in traditional data centers.

Virtualization improves resource utilization: 6 cores are functionally equivalent to 7 cores and 8 GB functionally equivalent to 10 GB

Virtual hardware correspond to physical hardware in a one-to-one mapping. Virtualization technologies can virtualize one physical device into one virtual device.

FusionAccess provides a customer experience oriented "any devices " + "any networks " + "any applications" solution seamless visit to cloud