Data transfer is slow between the source and destination. The quality of service requested by the transport layer in the OSI reference model is not being maintained. To fix this issue, at which layer should the troubleshooting process begin?（）A. presentat

题目

Data transfer is slow between the source and destination. The quality of service requested by the transport layer in the OSI reference model is not being maintained. To fix this issue, at which layer should the troubleshooting process begin?（）

A. presentation

B. session

C. transport

D. network

E. physical

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相似问题和答案

第1题：

54 Variables quality data are:

A. quantitative or qualitative data

B. quality data for which the product or service is designed and built

C. reflect measurements on a continuous scale of a characteristic of the produce or service.

D. Indicate management's understanding of the concept of variability

E. B and C only

正确答案：E

第2题：

●Thebasic concept of a data (72) is the difference between data and information.

(72) A．warehouse

B．storage

C．base

D．service

正确答案：A
【解析】数据仓库的基本概念就是数据和信息的不同。

第3题：

Variables quality data are:

A . quantitative or qualitative data

B . quality data for which the product or service is designed and built

C . reflect measurements on a continuous scale of a characteristic of the produce or service.

D . Indicate management's understanding of the concept of variability

E . B and C only

正确答案：E

第4题：

In the open systems interconnection (OSI) reference model, "layer" means one of seven conceptually complete,(71) arranged groups of services, functions, and protocols, that extend across all open systems.Application layer provides means for the application(72) to access the OSI environment. Presentation layer provides for the selection of a common syntax for representing data.(73) layer provides the means necessary for cooperating presentation entities to organize and synchronize their dialog and to manage their data exchange. Transport layer provides a reliable end-to-end data transfer service. Network layer provides for the entities in the transport layer the means for transferring blocks of data, by(74) and switching through the network between the open systems in which those entities reside. Data link layer provides services to transfer data between network layer entities. Physical layer provides the mechanical, electrical, functional, and procedural means to establish, maintain and(75) physical connections for transfer of bits over a transmission medium.

A．rankly

B．levelly

C．layered

D．hierarchically

正确答案：D

第5题：

(iii) assesses TSC in terms of financial performance, competitiveness, service quality, resource utilisation,

flexibility and innovation and discusses the interrelationships between these terms, incorporating

examples from within TSC; and (10 marks)

正确答案：
(iii) The terms listed may be seen as representative of the dimensions of performance. The dimensions may be analysed into
results and determinants.
The results may be measured by focusing on financial performance and competitiveness. Financial performance may
be measured in terms of revenue and profit as shown in the data in the appendix of the question in respect of TSC. The
points system in part (a) of the answer shows which depots have achieved or exceeded the target set. In addition,
liquidity is another aspect of the measurement of financial performance. The points total in part (a) showed that
Leonardotown and Michaelangelotown depots appear to have the best current record in aspects of credit control.
15
Competitiveness may be measured in terms of sales growth but also in terms of market share, number of new
customers, etc. In the TSC statistics available in (a) we only have data for the current quarter. This shows that three of
the four depots listed have achieved increased revenue compared to target.
The determinants are the factors which may be seen to contribute to the achievement of the results. Quality, resource
utilisation, flexibility and innovation are cited by Fitzgerald and Moon as examples of factors that should contribute to
the achievement of the results in terms of financial performance and competitiveness. In TSC a main quality issue
appears to be customer care and service delivery. The statistics in the points table in part (a) of the answer show that
the Raphaeltown depot appears to have a major problem in this area. It has only achieved one point out of the six
available in this particular segment of the statistics.
Resource utilisation for TSC may be measured by the level of effective use of drivers and vehicles. To some extent, this
is highlighted by the statistics relating to customer care and service delivery. For example, late collection of consignments
from customers may be caused by a shortage of vehicles and/or drivers. Such shortages could be due to staff turnover,
sickness, etc or problems with vehicle maintenance.
Flexibility may be an issue. There may, for example, be a problem with vehicle availability. Possibly an increased focus
on sources for short-term sub-contracting of vehicles/collections/deliveries might help overcome delay problems.
The ‘target v actual points system’ may be seen as an example of innovation by the company. This gives a detailed set
of measures that should provide an incentive for improvement at all depots. The points system may illustrate the extent
of achievement/non-achievement of company strategies for success. For example TSC may have a customer care
commitment policy which identifies factors that should be achieved on a continuing basis. For example, timely collection
of consignments, misdirected consignments re-delivered at no extra charge, prompt responses to customer claims and
compensation for customers.

第6题：

根据下面的文字资料回答 66～70 题

In low-speed network，it is usually adequate to wait for congestion to occur and

then react to it by telling the source of packets to slow down．In high-speed

networks，this approach oftenworks poorly，because in the（ 1 ）between sending the

notification and notification arriving at the source，thousands of

additional（ 2 ）may aITive．In ATM network，a major tool for

preventing（ 3 ）is（ 4 ）control．when a host wants a new virtual（ 5 ），it must

describe the traffic to be offered and the service expected．

第66题：文中（ 1 ）处正确的答案是（）。

A．interval

B．time

C．slot

D．delay

正确答案：A

【正确答案】：A
【参考解析】：
在低速网络中，通常采用碰到拥塞时，通过向源端反映其降低发送速率。而在告诉网络中，这种方式将会恶化，因为在发送通告和通告到达之间会有成千上万的其它数据包到达。在ATM网络中，主要采用允许控制来避免拥塞，当有一台主机要建立一条新的虚连接时，它必须描述它所需的流量和服务等级。

第7题：

Service(71)Architecture aims to provide a model for the creation of service components in a wide range of languages and a model for assembling service components into a business solution -activities which are at the heart of building applications using a(72)architecture.

Service Data Objects aims to provide consistent means of handling(73)within applications, whatever its source or(74)may be. SDO provides a way of unifying data handling for databases and for services. SDO also has mechanisms for the handling of data while(75)from its source.

A．Oriented

B．Level

C．Component

D．Conference

正确答案：C

第8题：

172 Variables quality data are:

A. quantitative or qualitative data

B. quality data for which the product or service is designed and built

C. reflect measurements on a continuous scale of a characteristic of the produce or service

D. Indicate management's understanding of the concept of variability

E. B and C only

正确答案：E

第9题：

In low-speed network，it is usually adequate to wait for congestion to occur and then react to it bytelling the source of packets to slow down．In high-speed networks，this approach often works poorly，because in the(71) between sending the notification and notification arriving at the source，thousands of additional(72) may arrive．In ATM network，a major tool for preventing(73)is(74)control．When a host wants a new virtual(75)，it must describe the traffic to be offeredand the service expected．

(69)

A．interval

B．time

C．slot

D．delay

正确答案：A

第10题：

In low - speed network ,it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high - speed networks, this approach often works poorly, because in the(71)between sending the notification and notification arriving at the source, thousands of additional(72)may arrive. In ATM network , a major tool for preventing(73)is(74)control. When a host wants a new virtual(75),it must describe the traffic to be offered and the service expected.

A．interval

B．time

C．slot

D．delay

正确答案：A
解析：interval：时间间隔

Data transfer is slow between the source and destination. The quality of service requested

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