The form of cloud often known as mackerel sky which is gener

It is _______ to tell which is earth and which is sky.

A: enough easy

B: easily enough

C: easy enough

D: enough easily

Cloud computing is a style of computing in which dynamically scalable and often （ ）resources are provided as a service over the internet.

A.realB.fixedC.actualD.virtualized

The connection between two networks to form. an internet is handled by a machine known as a ______．

A．bridge

B．client

C．router

D．switch

High clouds, composed of small white flakes or scaly globular masses, and often banded together to form a mackerel sky, would be classified as ______.

A.cirrus

B.cirrocumulus

C.altostratus

D.Cumulonimbus

Cloud-computing providers offer their “services” according to different models, which happen to form a stack（ ）, platform as a service (Paas), software as a service (SaaS)

A.hardware as a service (Haas)

B.network as a service (NaaS)

C.infrastructure as a service (IaaS)

D.data as a service (DaaS)

Cloud computing is a type of Internetbased computing that provides shared computer processing resources and data to computers and other devices on demand. Advocates claim that cloud computing allows companies to avoid upfront infrastructure costs. Cloud computing now has few service form, but it is not including()

AIaaS

B.PaaS

C.SaaS

D.DaaS

（）：a cloud service,allied to the set of business terms under which the cloud service is offered.

A.Cloud service

B.Cloud service product

C.Product catalogue

D.Service catalogue

The most widely used LAN system is ______ which adopts a form. of access known as CSMA-CD．

A．Ethemet

B．ATM

C．FDDI

D．Wireless

Sludge may form in the crankcase of an air conditioning compressor as a result of ______.

A.bubbling refrigerant

B.overheating and oxidation

C.lowered operating temperatures

D.reducing the cloud or floc point