Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises(7

第1题

Network managers have long awaited practical voice-over-IP（VOIP)solutions. VOIP promises e

Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises ease network management and decreases(66)by converging a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company's head-quarters with far-reaching branch offices can(67)tremendous amounts of money in long distance phone bills, provided that solution delivers POTS-like voice(68)over the Internet.

VOIP gateways are designed to convert voice from the(69)domain to the circuit switched domain. VOIP solutions use a digital signal processor(DSP)to process the voice data, preparing the voice sample for transmission by compressing voice and removing jitter. The VOIP equipment must comply with the(70)H.323 standard defined by the International Telecommunication Union, or ITU.

A．time

B．cash

C．costs

D．space

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第2题

The grid computing is a new（66)technology connecting the distributed and（67)resources to t

The grid computing is a new(66)technology connecting the distributed and(67)resources to the high-speed network and integrating a super-computer of processing capacity. The significance and architecture of the grid computing is explained. Several kernel technology such as OGSI, resource management, task management, task scheduling, high rate communication and security are described. Aiming at the particularity of the grid computing environment a mechanism similar to the technology of the search engine is designed to registry, discovery and(68)the resources in the grid. The whole model of the resource management is built by connecting task manager in the local resource management system to others with P2P model. The task may migrate among the task managers in order to(69)the load. The task users summit may be executed in relatively tight resource set, which will not only decrease the total communication overheads of the whole task but also(70)the performance of the system.

A．concentrative

B．distributed

C．aggregate

D．distributing

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第3题

HAV、HBV、HCMV、EB病毒检测的是DNA。（)

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第4题

尖锐湿疣是由引起的：()

A.HIV

B.HBV

C.HAV

D.EBV

E.HPV

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第5题

引起AIDS的病原体是（）。

A.HAV

B.HBV

C.HCV

D.HIV

E.HEV

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第6题

慢性乙型肝炎病毒的英文缩写（）

A.HAV

B.HBV

C.HDV

D.HEV

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第7题

人类患获得性免疫缺陷综合症是由于感染了（）。

A.HAV

B.HBV

C.HCV

D.HIV

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第8题

呼吸道感染的病毒是（)。

A.乙型脑炎病毒

B.轮状病毒

C.麻疹病毒

D.HAV

E.脊髓灰质炎病毒

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Network managers have long awaited practical voice-over-IP（VOIP)solutions. VOIP promises（7