Skip to main content

Describe the stages of spiral model. Distinguish it from the incremental model of software development.

There are six phases in the "Spiral Model" which are: 

1.The customer communication task – to establish effective communication between developer and customer. 

2.The planning task – to define resources, time lines and other project related information.. 

3.The risk analysis task – to assess both technical and management risks. 

4.The engineering task – to build one or more representations of the application. 

5.The construction and release task – to construct, test, install and provide user support (e.g., documentation and training). 

6.The customer evaluation task – to obtain customer feedback based on the evaluation of the software representation created during the engineering stage and implemented during the install stage.

7.Incremental model generates working software quickly and early during the software life cycle as compare to spiral model. 

8.It is more flexible - less costly to change scope and requirements.


Comments

Popular posts from this blog

Java,ES,QT practical files

All practical files: Click below to start download Uploaded on special request||||

Vidyalankar Question paper solutions

Download from their website: http://www.vidyalankar.org/index.aspx or just click here to download

Explain network classes.

43.Explain network classes. Ans. 1. TCP/IP network are 4 bytes long, called IP addresses and written in dotted-decimal notation. (ex. 192.168.166.5) 2. The decimal numbers must be within the numeric range of 0-255, each IPv4 addresses consist of 4 parts. 3. Each part should conform to the 1-byte requirement. 4. Depending on the value of the first byte of the address, IP addresses can be divided into classes. 5. Network classes are of 3 type and have some specific range • Class A 0-127 • Class B 128-191 • Class C 192-233 6. Class division enables us efficient use of the address numbers. 7. Assigned network numbers are maintained in a database managed by InterNIC to insure that each assignment is unique. 8. After obtaining a network number, the host numbers may be assigned as required, for data transfer ARP maps the IP address to the MAC address of the device. 9. Routers are used for transferring data between 2 devices, routers are default gateway ...