以太网交换机可以有多个端口，每个端口可以单独和一个结点连接，也可以和一个以太网集线器连接。当连接以太网的时候，这个端口是()。

● The Rational Unified Process (RUP) is a software engineering process, which captures many of best practices in modern software development. The notions of （71） and scenarios have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions – time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive （72） which is concluded with a well-defined （73） and can be further broken down into （74） – a complete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group （75） logically by nature.

● The Rational Unified Process (RUP) is a software engineering process, which captures any of best practices in modern software development. The notions of （71） and scenarios ave been proven to be an excellent way to capture function requirements. RUP can be described two dimensions – time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive （72） which is concluded with awell-defined （73） and can be further broken down into （74） – a complete developmentloop resulting in a release of an executable product, a subset of the final product underdevelopment, which grows incrementally to become the final system. The content structurerefers to the disciplines, which group （75） logically by nature

.

The Rational Unified Process (RUP) is a software engineering process, which captures many of best practices in modern software development. The notions of use-cases and (71) have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions-time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive (72) which is concluded with a well-defined (73) and can be further broken down into (74) - a complete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group (75) logically by nature.

A．actors

B．artifacts

C．workers

D．scenarios

The Rational Unified Process(RUP)is a software engineering process, which captures many of best practices in modem software development. The notions of(36)and scenarios have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions - time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive(37)which is concluded with a well-defined(38)and can be further broken down into(39)-a complete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group(40)logically by nature.

A．artifacts

B．use-cases

C．actors

D．workers

The Rational Unified Process(RUP)is a software engineering process, which captures many of best practices in modem software development. The notions of(71)and scenarios have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions - time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive(72)which is concluded with a well-defined(73)and can be further broken down into(74)- a complete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group(75)logically by nature.

A．artifacts

B．use-cases

C．actors

D．workers

● The Rational Unified Process (RUP) is a software engineering process, which captures any of best practices in modern software development. The notions of （71） and scenarios ave been proven to be an excellent way to capture function requirements. RUP can be described two dimensions – time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive （72） which is concluded with awell-defined （73） and can be further broken down into （74） – a complete developmentloop resulting in a release of an executable product, a subset of the final product underdevelopment, which grows incrementally to become the final system. The content structurerefers to the disciplines, which group （75） logically by nature

.

● The Rational Unified Process (RUP) is a software engineering process, which captures many of best practices in modern software development. The notions of （71） and scenarios have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions – time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive （72） which is concluded with a well-defined （73） and can be further broken down into （74） – a complete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group （75） logically by nature.

①estimation of software development cost

③earn & cost analysis of software development

③adjustment of software development progress

A．①only B．②and③ C．①and② D．all

Ⅰ．Estimation of software development cost

Ⅱ．Earn & Cost analysis of software development

Ⅲ．Adjustment of software development progress

A．Ⅲ only

B．Ⅱ and Ⅲ

C．Ⅰ and Ⅱ

D．all

Ⅰ.Estimation of software development cost

Ⅱ.Earn & Cost analysis of software development

Ⅲ.Adjustment of software development progress

A．Ⅲ only

B．Ⅱ and Ⅲ

C．Ⅰ and Ⅱ

D．all